[packages.git] / lang / php5 / patches / 005-APC.patch

diff -ubrN php-5.2.5-orig/ext/apc/apc.c php-5.2.5/ext/apc/apc.c
--- php-5.2.5-orig/ext/apc/apc.c        1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc.c     2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,554 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc.c,v 3.18 2007/11/29 22:15:53 shire Exp $ */
+
+#include "apc.h"
+#include <regex.h>      /* for POSIX regular expressions */
+#include "php.h"
+
+#define NELEMS(a) (sizeof(a)/sizeof((a)[0]))
+
+/* {{{ memory allocation wrappers */
+
+void* apc_emalloc(size_t n)
+{
+    void* p = malloc(n);
+    if (p == NULL) {
+        apc_eprint("apc_emalloc: malloc failed to allocate %u bytes:", n);
+    }
+    return p;
+}
+
+void* apc_erealloc(void* p, size_t n)
+{
+    p = realloc(p, n);
+    if (p == NULL) {
+        apc_eprint("apc_erealloc: realloc failed to allocate %u bytes:", n);
+    }
+    return p;
+}
+
+void apc_efree(void* p)
+{
+    if (p == NULL) {
+        apc_eprint("apc_efree: attempt to free null pointer");
+    }
+    free(p);
+}
+
+char* apc_estrdup(const char* s)
+{
+    int len;
+    char* dup;
+
+    if (s == NULL) {
+        return NULL;
+    }
+    len = strlen(s);
+    dup = (char*) malloc(len+1);
+    if (dup == NULL) {
+        apc_eprint("apc_estrdup: malloc failed to allocate %u bytes:", len+1);
+    }
+    memcpy(dup, s, len);
+    dup[len] = '\0';
+    return dup;
+}
+
+void* apc_xstrdup(const char* s, apc_malloc_t f)
+{
+    return s != NULL ? apc_xmemcpy(s, strlen(s)+1, f) : NULL;
+}
+
+void* apc_xmemcpy(const void* p, size_t n, apc_malloc_t f)
+{
+    void* q;
+
+    if (p != NULL && (q = f(n)) != NULL) {
+        memcpy(q, p, n);
+        return q;
+    }
+    return NULL;
+}
+
+/* }}} */
+
+/* {{{ console display functions */
+
+static void my_log(int level, const char* fmt, va_list args)
+{
+    static const char* level_strings[] = {
+        "apc-debug",
+        "apc-notice",
+        "apc-warning",
+        "apc-error"
+    };
+    static const int num_levels = NELEMS(level_strings);
+
+    time_t now;
+    char* buf;          /* for ctime */
+
+    fflush(stdout);
+
+    if (level < 0)
+        level = 0;
+    else if (level >= num_levels)
+        level = num_levels-1;
+    
+    now = time(0);
+    buf = ctime(&now);  /* TODO: replace with reentrant impl */
+    buf[24] = '\0';
+
+    fprintf(stderr, "[%s] [%s] ", buf, level_strings[level]);
+    vfprintf(stderr, fmt, args);
+
+    if (fmt[0] != '\0' && fmt[strlen(fmt)-1] == ':') {
+        fprintf(stderr, " %s", strerror(errno));
+    }
+    fprintf(stderr, "\n");
+
+    if (level == APC_ERROR) {
+        exit(2);
+    }
+}
+
+void apc_log(int level, const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    my_log(level, fmt, args);
+    va_end(args);
+}
+
+void apc_eprint(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    my_log(APC_ERROR, fmt, args);
+    va_end(args);
+}
+
+void apc_wprint(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    my_log(APC_WARNING, fmt, args);
+    va_end(args);
+}
+
+void apc_nprint(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    my_log(APC_NOTICE, fmt, args);
+    va_end(args);
+}
+
+void apc_dprint(const char* fmt, ...)
+{
+#ifdef APC_DEBUG
+    va_list args;
+    va_start(args, fmt);
+    my_log(APC_DBG, fmt, args);
+    va_end(args);
+#endif
+}
+
+/* }}} */
+
+/* {{{ string and text manipulation */
+
+char* apc_append(const char* s, const char* t)
+{
+    int slen;
+    int tlen;
+    char* p;
+
+    slen = strlen(s);
+    tlen = strlen(t);
+
+    p = (char*) apc_emalloc((slen + tlen + 1) * sizeof(char));
+    memcpy(p, s, slen);
+    memcpy(p + slen, t, tlen + 1);
+
+    return p;
+}
+
+char* apc_substr(const char* s, int start, int length)
+{
+    char* substr;
+    int src_len = strlen(s);
+
+    /* bring start into range */
+    if (start < 0) {
+        start = 0;
+    }
+    else if (start >= src_len) {
+        start = src_len - 1;
+    }
+
+    /* bring length into range */
+    if (length < 0 || src_len - start < length) {
+        length = src_len - start;
+    }
+
+    /* create the substring */
+    substr = apc_xmemcpy(s + start, length + 1, apc_emalloc);
+    substr[length] = '\0';
+    return substr;
+}
+
+char** apc_tokenize(const char* s, char delim)
+{
+    char** tokens;      /* array of tokens, NULL terminated */
+    int size;           /* size of tokens array */
+    int n;              /* index of next token in tokens array */
+    int cur;            /* current position in input string */
+    int end;            /* final legal position in input string */
+    int next;           /* position of next delimiter in input */
+    
+    if (!s) {
+        return NULL;
+    }
+
+    size = 2;
+    n    = 0;
+    cur  = 0;
+    end  = strlen(s) - 1;
+    
+    tokens = (char**) apc_emalloc(size * sizeof(char*));
+    tokens[n] = NULL;
+
+    while (cur <= end) {
+        /* search for the next delimiter */
+        char* p = strchr(s + cur, delim);
+        next = p ? p-s : end+1;
+
+        /* resize token array if necessary */
+        if (n == size-1) {
+            size *= 2;
+            tokens = (char**) apc_erealloc(tokens, size * sizeof(char*));
+        }
+
+        /* save the current token */
+        tokens[n] = apc_substr(s, cur, next-cur);
+
+        tokens[++n] = NULL;
+        cur = next + 1;
+    }
+
+    return tokens;
+}
+
+/* }}} */
+
+/* {{{ filesystem functions */
+
+#ifdef PHP_WIN32
+int apc_win32_stat(const char *path, struct stat *buf TSRMLS_DC)
+{
+    char rpath[MAXPATHLEN];
+    BY_HANDLE_FILE_INFORMATION fi;
+    HANDLE f;
+    
+    if (VCWD_STAT(path, buf)) {
+        return -1;
+    }
+
+    VCWD_REALPATH(path, rpath);
+    f = CreateFile(rpath, 0, 0, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_ATTRIBUTE_READONLY, NULL);
+    GetFileInformationByHandle(f, &fi);
+    buf->st_ino = (ino_t)fi.nFileIndexLow;
+    CloseHandle (f);
+    return 0;
+}
+#endif
+
+int apc_search_paths(const char* filename, const char* path, apc_fileinfo_t* fileinfo)
+{
+    char** paths;
+    char *exec_fname;
+    int exec_fname_length;
+    int found = 0;
+    int i;
+    TSRMLS_FETCH();
+
+    assert(filename && fileinfo);
+
+    if (IS_ABSOLUTE_PATH(filename, strlen(filename)) && apc_stat(filename, &fileinfo->st_buf) == 0) {
+        strncpy(fileinfo->fullpath, filename, MAXPATHLEN);
+        return 0;
+    }
+
+    paths = apc_tokenize(path, DEFAULT_DIR_SEPARATOR);
+    if (!paths)
+        return -1;
+
+    /* for each directory in paths, look for filename inside */
+    for (i = 0; paths[i]; i++) {
+        snprintf(fileinfo->fullpath, sizeof(fileinfo->fullpath), "%s%c%s", paths[i], DEFAULT_SLASH, filename);
+        if (apc_stat(fileinfo->fullpath, &fileinfo->st_buf) == 0) {
+            found = 1;
+            break;
+        }
+    }
+
+    /* check in path of the calling scripts' current working directory */
+    /* modified from main/streams/plain_wrapper.c */
+    if(!found && zend_is_executing(TSRMLS_C)) {
+        exec_fname = zend_get_executed_filename(TSRMLS_C);
+        exec_fname_length = strlen(exec_fname);
+        while((--exec_fname_length >= 0) && !IS_SLASH(exec_fname[exec_fname_length]));
+        if((exec_fname && exec_fname[0] != '[') && exec_fname_length > 0) {
+            /* not: [no active file] or no path */
+            memcpy(fileinfo->fullpath, exec_fname, exec_fname_length);
+            fileinfo->fullpath[exec_fname_length] = DEFAULT_SLASH;
+            strcpy(fileinfo->fullpath +exec_fname_length +1, filename);
+            /* apc_wprint("filename: %s, exec_fname: %s, fileinfo->fullpath: %s", filename, exec_fname, fileinfo->fullpath); */
+            if (apc_stat(fileinfo->fullpath, &fileinfo->st_buf) == 0) {
+                found = 1;
+            }
+        }
+    }
+    
+    /* free the value returned by apc_tokenize */
+    for (i = 0; paths[i]; i++) {
+        apc_efree(paths[i]);
+    }
+    apc_efree(paths);
+
+    return found ? 0 : -1;
+}
+
+/* }}} */
+
+/* {{{ regular expression wrapper functions */
+
+typedef struct {
+    regex_t *reg;
+    unsigned char type;
+} apc_regex;
+
+void* apc_regex_compile_array(char* patterns[])
+{
+    apc_regex** regs;
+    int npat;
+    int i;
+
+    if (!patterns)
+        return NULL;
+
+    /* count the number of patterns in patterns */
+    for (npat = 0; patterns[npat] != NULL; npat++) {}
+
+    if (npat == 0)
+        return NULL;
+
+    /* allocate the array of compiled expressions */
+    regs = (apc_regex**) apc_emalloc(sizeof(apc_regex*) * (npat + 1));
+    for (i = 0; i <= npat; i++) {
+        regs[i] = (apc_regex *) apc_emalloc(sizeof(apc_regex));
+        regs[i]->reg = NULL;
+        regs[i]->type = APC_NEGATIVE_MATCH;
+    }
+
+    /* compile the expressions */
+    for (i = 0; i < npat; i++) {
+        char *pattern = patterns[i];
+        if(pattern[0]=='+') { regs[i]->type = APC_POSITIVE_MATCH; pattern = patterns[i]+sizeof(char); }
+        else if(pattern[0]=='-') { regs[i]->type = APC_NEGATIVE_MATCH; pattern = patterns[i]+sizeof(char); }
+
+        regs[i]->reg = (regex_t*) apc_emalloc(sizeof(regex_t));
+
+        if (regcomp(regs[i]->reg, pattern, REG_EXTENDED | REG_NOSUB) != 0) {
+            apc_wprint("apc_regex_compile_array: invalid expression '%s'",
+                       pattern);
+
+            apc_regex_destroy_array(regs);
+
+            return NULL;
+        }
+    }
+
+    return (void*) regs;
+}
+
+void apc_regex_destroy_array(void* p)
+{
+    if (p != NULL) {
+        apc_regex** regs = (apc_regex**) p;
+        int i;
+
+        for (i = 0; regs[i]->reg != NULL; i++) {
+            regfree(regs[i]->reg);
+            apc_efree(regs[i]->reg);
+            apc_efree(regs[i]);
+        }
+        apc_efree(regs);
+    }
+}
+
+int apc_regex_match_array(void* p, const char* input)
+{
+    apc_regex** regs;
+    int i;
+
+    if (!p)
+        return 0;
+
+    regs = (apc_regex**) p;
+    for (i = 0; regs[i]->reg != NULL; i++)
+        if (regexec(regs[i]->reg, input, 0, NULL, 0) == 0)
+            return (int)(regs[i]->type);
+
+    return 0;
+}
+
+/* }}} */
+
+/* {{{ crc32 implementation */
+
+/* this table was generated by crc32gen() */
+static unsigned int crc32tab[] = {
+    /*   0 */  0x00000000, 0x3b83984b, 0x77073096, 0x4c84a8dd, 
+    /*   4 */  0xee0e612c, 0xd58df967, 0x990951ba, 0xa28ac9f1, 
+    /*   8 */  0x076dc419, 0x3cee5c52, 0x706af48f, 0x4be96cc4, 
+    /*  12 */  0xe963a535, 0xd2e03d7e, 0x9e6495a3, 0xa5e70de8, 
+    /*  16 */  0x0edb8832, 0x35581079, 0x79dcb8a4, 0x425f20ef, 
+    /*  20 */  0xe0d5e91e, 0xdb567155, 0x97d2d988, 0xac5141c3, 
+    /*  24 */  0x09b64c2b, 0x3235d460, 0x7eb17cbd, 0x4532e4f6, 
+    /*  28 */  0xe7b82d07, 0xdc3bb54c, 0x90bf1d91, 0xab3c85da, 
+    /*  32 */  0x1db71064, 0x2634882f, 0x6ab020f2, 0x5133b8b9, 
+    /*  36 */  0xf3b97148, 0xc83ae903, 0x84be41de, 0xbf3dd995, 
+    /*  40 */  0x1adad47d, 0x21594c36, 0x6ddde4eb, 0x565e7ca0, 
+    /*  44 */  0xf4d4b551, 0xcf572d1a, 0x83d385c7, 0xb8501d8c, 
+    /*  48 */  0x136c9856, 0x28ef001d, 0x646ba8c0, 0x5fe8308b, 
+    /*  52 */  0xfd62f97a, 0xc6e16131, 0x8a65c9ec, 0xb1e651a7, 
+    /*  56 */  0x14015c4f, 0x2f82c404, 0x63066cd9, 0x5885f492, 
+    /*  60 */  0xfa0f3d63, 0xc18ca528, 0x8d080df5, 0xb68b95be, 
+    /*  64 */  0x3b6e20c8, 0x00edb883, 0x4c69105e, 0x77ea8815, 
+    /*  68 */  0xd56041e4, 0xeee3d9af, 0xa2677172, 0x99e4e939, 
+    /*  72 */  0x3c03e4d1, 0x07807c9a, 0x4b04d447, 0x70874c0c, 
+    /*  76 */  0xd20d85fd, 0xe98e1db6, 0xa50ab56b, 0x9e892d20, 
+    /*  80 */  0x35b5a8fa, 0x0e3630b1, 0x42b2986c, 0x79310027, 
+    /*  84 */  0xdbbbc9d6, 0xe038519d, 0xacbcf940, 0x973f610b, 
+    /*  88 */  0x32d86ce3, 0x095bf4a8, 0x45df5c75, 0x7e5cc43e, 
+    /*  92 */  0xdcd60dcf, 0xe7559584, 0xabd13d59, 0x9052a512, 
+    /*  96 */  0x26d930ac, 0x1d5aa8e7, 0x51de003a, 0x6a5d9871, 
+    /* 100 */  0xc8d75180, 0xf354c9cb, 0xbfd06116, 0x8453f95d, 
+    /* 104 */  0x21b4f4b5, 0x1a376cfe, 0x56b3c423, 0x6d305c68, 
+    /* 108 */  0xcfba9599, 0xf4390dd2, 0xb8bda50f, 0x833e3d44, 
+    /* 112 */  0x2802b89e, 0x138120d5, 0x5f058808, 0x64861043, 
+    /* 116 */  0xc60cd9b2, 0xfd8f41f9, 0xb10be924, 0x8a88716f, 
+    /* 120 */  0x2f6f7c87, 0x14ece4cc, 0x58684c11, 0x63ebd45a, 
+    /* 124 */  0xc1611dab, 0xfae285e0, 0xb6662d3d, 0x8de5b576, 
+    /* 128 */  0x76dc4190, 0x4d5fd9db, 0x01db7106, 0x3a58e94d, 
+    /* 132 */  0x98d220bc, 0xa351b8f7, 0xefd5102a, 0xd4568861, 
+    /* 136 */  0x71b18589, 0x4a321dc2, 0x06b6b51f, 0x3d352d54, 
+    /* 140 */  0x9fbfe4a5, 0xa43c7cee, 0xe8b8d433, 0xd33b4c78, 
+    /* 144 */  0x7807c9a2, 0x438451e9, 0x0f00f934, 0x3483617f, 
+    /* 148 */  0x9609a88e, 0xad8a30c5, 0xe10e9818, 0xda8d0053, 
+    /* 152 */  0x7f6a0dbb, 0x44e995f0, 0x086d3d2d, 0x33eea566, 
+    /* 156 */  0x91646c97, 0xaae7f4dc, 0xe6635c01, 0xdde0c44a, 
+    /* 160 */  0x6b6b51f4, 0x50e8c9bf, 0x1c6c6162, 0x27eff929, 
+    /* 164 */  0x856530d8, 0xbee6a893, 0xf262004e, 0xc9e19805, 
+    /* 168 */  0x6c0695ed, 0x57850da6, 0x1b01a57b, 0x20823d30, 
+    /* 172 */  0x8208f4c1, 0xb98b6c8a, 0xf50fc457, 0xce8c5c1c, 
+    /* 176 */  0x65b0d9c6, 0x5e33418d, 0x12b7e950, 0x2934711b, 
+    /* 180 */  0x8bbeb8ea, 0xb03d20a1, 0xfcb9887c, 0xc73a1037, 
+    /* 184 */  0x62dd1ddf, 0x595e8594, 0x15da2d49, 0x2e59b502, 
+    /* 188 */  0x8cd37cf3, 0xb750e4b8, 0xfbd44c65, 0xc057d42e, 
+    /* 192 */  0x4db26158, 0x7631f913, 0x3ab551ce, 0x0136c985, 
+    /* 196 */  0xa3bc0074, 0x983f983f, 0xd4bb30e2, 0xef38a8a9, 
+    /* 200 */  0x4adfa541, 0x715c3d0a, 0x3dd895d7, 0x065b0d9c, 
+    /* 204 */  0xa4d1c46d, 0x9f525c26, 0xd3d6f4fb, 0xe8556cb0, 
+    /* 208 */  0x4369e96a, 0x78ea7121, 0x346ed9fc, 0x0fed41b7, 
+    /* 212 */  0xad678846, 0x96e4100d, 0xda60b8d0, 0xe1e3209b, 
+    /* 216 */  0x44042d73, 0x7f87b538, 0x33031de5, 0x088085ae, 
+    /* 220 */  0xaa0a4c5f, 0x9189d414, 0xdd0d7cc9, 0xe68ee482, 
+    /* 224 */  0x5005713c, 0x6b86e977, 0x270241aa, 0x1c81d9e1, 
+    /* 228 */  0xbe0b1010, 0x8588885b, 0xc90c2086, 0xf28fb8cd, 
+    /* 232 */  0x5768b525, 0x6ceb2d6e, 0x206f85b3, 0x1bec1df8, 
+    /* 236 */  0xb966d409, 0x82e54c42, 0xce61e49f, 0xf5e27cd4, 
+    /* 240 */  0x5edef90e, 0x655d6145, 0x29d9c998, 0x125a51d3, 
+    /* 244 */  0xb0d09822, 0x8b530069, 0xc7d7a8b4, 0xfc5430ff, 
+    /* 248 */  0x59b33d17, 0x6230a55c, 0x2eb40d81, 0x153795ca, 
+    /* 252 */  0xb7bd5c3b, 0x8c3ec470, 0xc0ba6cad, 0xfb39f4e6, 
+};
+
+unsigned int apc_crc32(const char* buf, int len)
+{
+    int i;
+    int k;
+    unsigned int crc;
+
+    /* preconditioning */
+    crc = 0xFFFFFFFF;
+    
+    for (i = 0; i < len; i++) {
+        k = (crc ^ buf[i]) & 0x000000FF;
+        crc = ((crc >> 8) & 0x00FFFFFF) ^ crc32tab[k];
+    }
+
+    /* postconditioning */
+    return ~crc;
+}
+
+/* crc32gen: generate the nth (0..255) crc32 table value */
+#if 0
+static unsigned long crc32gen(int n)
+{
+    int i;
+    unsigned long crc;
+    
+    crc = n;
+    for (i = 8; i >= 0; i--) {
+        if (crc & 1) {
+            crc = (crc >> 1) ^ 0xEDB88320;
+        }
+        else {
+            crc >>= 1;
+        }
+    }
+    return crc;
+}
+#endif
+
+/* }}} */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_cache.c php-5.2.5/ext/apc/apc_cache.c
--- php-5.2.5-orig/ext/apc/apc_cache.c  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_cache.c       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,1343 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_cache.c,v 3.145 2007/10/05 23:06:56 gopalv Exp $ */
+
+#include "apc_cache.h"
+#include "apc_lock.h"
+#include "apc_sma.h"
+#include "apc_globals.h"
+#include "SAPI.h"
+#include "ext/standard/php_var.h"
+#include "ext/standard/php_smart_str.h"
+
+/* TODO: rehash when load factor exceeds threshold */
+
+#define CHECK(p) { if ((p) == NULL) return NULL; }
+
+/* {{{ locking macros */
+#define CREATE_LOCK(lock)     apc_lck_create(NULL, 0, 1, lock)
+#define DESTROY_LOCK(c) apc_lck_destroy(c->header->lock)
+#define LOCK(c)         { HANDLE_BLOCK_INTERRUPTIONS(); apc_lck_lock(c->header->lock); }
+#define RDLOCK(c)       { HANDLE_BLOCK_INTERRUPTIONS(); apc_lck_rdlock(c->header->lock); }
+#define UNLOCK(c)       { apc_lck_unlock(c->header->lock); HANDLE_UNBLOCK_INTERRUPTIONS(); }
+/* }}} */
+
+/* {{{ struct definition: slot_t */
+typedef struct slot_t slot_t;
+struct slot_t {
+    apc_cache_key_t key;        /* slot key */
+    apc_cache_entry_t* value;   /* slot value */
+    slot_t* next;               /* next slot in linked list */
+    int num_hits;               /* number of hits to this bucket */
+    time_t creation_time;       /* time slot was initialized */
+    time_t deletion_time;       /* time slot was removed from cache */
+    time_t access_time;         /* time slot was last accessed */
+};
+/* }}} */
+
+/* {{{ struct definition: header_t
+   Any values that must be shared among processes should go in here. */
+typedef struct header_t header_t;
+struct header_t {
+    apc_lck_t lock;              /* read/write lock (exclusive blocking cache lock) */
+    apc_lck_t wrlock;           /* write lock (non-blocking used to prevent cache slams) */
+    int num_hits;               /* total successful hits in cache */
+    int num_misses;             /* total unsuccessful hits in cache */
+    int num_inserts;            /* total successful inserts in cache */
+    slot_t* deleted_list;       /* linked list of to-be-deleted slots */
+    time_t start_time;          /* time the above counters were reset */
+    int expunges;               /* total number of expunges */
+    zend_bool busy;             /* Flag to tell clients when we are busy cleaning the cache */
+    int num_entries;            /* Statistic on the number of entries */
+    size_t mem_size;            /* Statistic on the memory size used by this cache */
+};
+/* }}} */
+
+/* {{{ struct definition: apc_cache_t */
+struct apc_cache_t {
+    void* shmaddr;              /* process (local) address of shared cache */
+    header_t* header;           /* cache header (stored in SHM) */
+    slot_t** slots;             /* array of cache slots (stored in SHM) */
+    int num_slots;              /* number of slots in cache */
+    int gc_ttl;                 /* maximum time on GC list for a slot */
+    int ttl;                    /* if slot is needed and entry's access time is older than this ttl, remove it */
+};
+/* }}} */
+
+/* {{{ struct definition local_slot_t */
+typedef struct local_slot_t local_slot_t;
+struct local_slot_t {
+    slot_t *original;           /* the original slot in shm */
+    int num_hits;               /* number of hits */
+    time_t creation_time;       /* creation time */
+    apc_cache_entry_t *value;   /* shallow copy of slot->value */
+    local_slot_t *next;         /* only for dead list */
+};
+/* }}} */
+/* {{{ struct definition apc_local_cache_t */
+struct apc_local_cache_t {
+    apc_cache_t* shmcache;      /* the real cache in shm */
+    local_slot_t* slots;        /* process (local) cache of objects */
+    local_slot_t* dead_list;    /* list of objects pending removal */
+    int num_slots;              /* number of slots in cache */
+    int ttl;                    /* time to live */
+    int num_hits;               /* number of hits */
+    int generation;             /* every generation lives between expunges */
+};
+/* }}} */
+
+/* {{{ key_equals */
+#define key_equals(a, b) (a.inode==b.inode && a.device==b.device)
+/* }}} */
+
+/* {{{ hash */
+static unsigned int hash(apc_cache_key_t key)
+{
+    return key.data.file.device + key.data.file.inode;
+}
+/* }}} */
+
+/* {{{ string_nhash_8 */
+static unsigned int string_nhash_8(const char *s, size_t len)
+{
+    register const unsigned int *iv = (const unsigned int *)s;
+    register unsigned int h = 0;
+    register const unsigned int *e  = (const unsigned int *)(s + len - (len % sizeof(unsigned int)));
+
+    for(;iv<e;iv++) {
+        h += *iv;
+        h = (h << 7) | (h >> ((8*sizeof(unsigned int)) - 7));
+    }
+    s = (const char *)iv;
+    for(len %= sizeof(unsigned int);len;len--) {
+        h += *(s++);
+    }
+    h ^= (h >> 13);
+    h ^= (h >> 7);
+    return h;
+}
+/* }}} */
+
+/* {{{ make_slot */
+slot_t* make_slot(apc_cache_key_t key, apc_cache_entry_t* value, slot_t* next, time_t t)
+{
+    slot_t* p = apc_sma_malloc(sizeof(slot_t));
+    if (!p) return NULL;
+
+    if(value->type == APC_CACHE_ENTRY_USER) {
+        char *identifier = (char*) apc_xstrdup(key.data.user.identifier, apc_sma_malloc);
+        if (!identifier) {
+            apc_sma_free(p);
+            return NULL;
+        }
+        key.data.user.identifier = identifier;
+    } else if(key.type == APC_CACHE_KEY_FPFILE) {
+        char *fullpath = (char*) apc_xstrdup(key.data.fpfile.fullpath, apc_sma_malloc);
+        if (!fullpath) {
+            apc_sma_free(p);
+            return NULL;
+        }
+        key.data.fpfile.fullpath = fullpath;
+    }
+    p->key = key;
+    p->value = value;
+    p->next = next;
+    p->num_hits = 0;
+    p->creation_time = t;
+    p->access_time = t;
+    p->deletion_time = 0;
+    return p;
+}
+/* }}} */
+
+/* {{{ free_slot */
+static void free_slot(slot_t* slot)
+{
+    if(slot->value->type == APC_CACHE_ENTRY_USER) {
+        apc_sma_free((char *)slot->key.data.user.identifier);
+    } else if(slot->key.type == APC_CACHE_KEY_FPFILE) {
+        apc_sma_free((char *)slot->key.data.fpfile.fullpath);
+    }
+    apc_cache_free_entry(slot->value);
+    apc_sma_free(slot);
+}
+/* }}} */
+
+/* {{{ remove_slot */
+static void remove_slot(apc_cache_t* cache, slot_t** slot)
+{
+    slot_t* dead = *slot;
+    *slot = (*slot)->next;
+
+    cache->header->mem_size -= dead->value->mem_size;
+    cache->header->num_entries--;
+    if (dead->value->ref_count <= 0) {
+        free_slot(dead);
+    }
+    else {
+        dead->next = cache->header->deleted_list;
+        dead->deletion_time = time(0);
+        cache->header->deleted_list = dead;
+    }
+}
+/* }}} */
+
+/* {{{ process_pending_removals */
+static void process_pending_removals(apc_cache_t* cache)
+{
+    slot_t** slot;
+    time_t now;
+
+    /* This function scans the list of removed cache entries and deletes any
+     * entry whose reference count is zero (indicating that it is no longer
+     * being executed) or that has been on the pending list for more than
+     * cache->gc_ttl seconds (we issue a warning in the latter case).
+     */
+
+    if (!cache->header->deleted_list)
+        return;
+
+    slot = &cache->header->deleted_list;
+    now = time(0);
+
+    while (*slot != NULL) {
+        int gc_sec = cache->gc_ttl ? (now - (*slot)->deletion_time) : 0;
+
+        if ((*slot)->value->ref_count <= 0 || gc_sec > cache->gc_ttl) {
+            slot_t* dead = *slot;
+
+            if (dead->value->ref_count > 0) {
+                switch(dead->value->type) {
+                    case APC_CACHE_ENTRY_FILE:
+                        apc_log(APC_WARNING, "GC cache entry '%s' (dev=%d ino=%d) "
+                            "was on gc-list for %d seconds", dead->value->data.file.filename,
+                            dead->key.data.file.device, dead->key.data.file.inode, gc_sec);
+                        break;
+                    case APC_CACHE_ENTRY_USER:
+                        apc_log(APC_WARNING, "GC cache entry '%s' "
+                            "was on gc-list for %d seconds", dead->value->data.user.info, gc_sec);
+                        break;
+                }
+            }
+            *slot = dead->next;
+            free_slot(dead);
+        }
+        else {
+            slot = &(*slot)->next;
+        }
+    }
+}
+/* }}} */
+
+/* {{{ prevent_garbage_collection */
+static void prevent_garbage_collection(apc_cache_entry_t* entry)
+{
+    /* set reference counts on zend objects to an arbitrarily high value to
+     * prevent garbage collection after execution */
+
+    enum { BIG_VALUE = 1000 };
+
+    if(entry->data.file.op_array) {
+        entry->data.file.op_array->refcount[0] = BIG_VALUE;
+    }
+    if (entry->data.file.functions) {
+        int i;
+        apc_function_t* fns = entry->data.file.functions;
+        for (i=0; fns[i].function != NULL; i++) {
+#ifdef ZEND_ENGINE_2            
+            *(fns[i].function->op_array.refcount) = BIG_VALUE;
+#else            
+            fns[i].function->op_array.refcount[0] = BIG_VALUE;
+#endif            
+        }
+    }
+    if (entry->data.file.classes) {
+        int i;
+        apc_class_t* classes = entry->data.file.classes;
+        for (i=0; classes[i].class_entry != NULL; i++) {
+#ifdef ZEND_ENGINE_2            
+            classes[i].class_entry->refcount = BIG_VALUE;
+#else            
+            classes[i].class_entry->refcount[0] = BIG_VALUE;
+#endif
+        }
+    }
+}
+/* }}} */
+
+/* {{{ apc_cache_create */
+apc_cache_t* apc_cache_create(int size_hint, int gc_ttl, int ttl)
+{
+    apc_cache_t* cache;
+    int cache_size;
+    int num_slots;
+    int i;
+
+    num_slots = size_hint > 0 ? size_hint*2 : 2000;
+
+    cache = (apc_cache_t*) apc_emalloc(sizeof(apc_cache_t));
+    cache_size = sizeof(header_t) + num_slots*sizeof(slot_t*);
+
+    cache->shmaddr = apc_sma_malloc(cache_size);
+    if(!cache->shmaddr) {
+        apc_eprint("Unable to allocate shared memory for cache structures.  (Perhaps your shared memory size isn't large enough?). ");
+    }
+    memset(cache->shmaddr, 0, cache_size);
+
+    cache->header = (header_t*) cache->shmaddr;
+    cache->header->num_hits = 0;
+    cache->header->num_misses = 0;
+    cache->header->deleted_list = NULL;
+    cache->header->start_time = time(NULL);
+    cache->header->expunges = 0;
+    cache->header->busy = 0;
+
+    cache->slots = (slot_t**) (((char*) cache->shmaddr) + sizeof(header_t));
+    cache->num_slots = num_slots;
+    cache->gc_ttl = gc_ttl;
+    cache->ttl = ttl;
+    CREATE_LOCK(cache->header->lock);
+#if NONBLOCKING_LOCK_AVAILABLE
+    CREATE_LOCK(cache->header->wrlock);
+#endif
+    for (i = 0; i < num_slots; i++) {
+        cache->slots[i] = NULL;
+    }
+
+    return cache;
+}
+/* }}} */
+
+/* {{{ apc_cache_destroy */
+void apc_cache_destroy(apc_cache_t* cache)
+{
+    DESTROY_LOCK(cache);
+    apc_efree(cache);
+}
+/* }}} */
+
+/* {{{ apc_cache_clear */
+void apc_cache_clear(apc_cache_t* cache)
+{
+    int i;
+
+    if(!cache) return;
+
+    LOCK(cache);
+    cache->header->busy = 1;
+    cache->header->num_hits = 0;
+    cache->header->num_misses = 0;
+    cache->header->start_time = time(NULL);
+    cache->header->expunges = 0;
+
+    for (i = 0; i < cache->num_slots; i++) {
+        slot_t* p = cache->slots[i];
+        while (p) {
+            remove_slot(cache, &p);
+        }
+        cache->slots[i] = NULL;
+    }
+    
+    cache->header->busy = 0;
+    UNLOCK(cache);
+}
+/* }}} */
+
+/* {{{ apc_cache_expunge */
+void apc_cache_expunge(apc_cache_t* cache, time_t t)
+{
+    int i;
+
+    if(!cache) return;
+
+    if(!cache->ttl) {
+        /* 
+         * If cache->ttl is not set, we wipe out the entire cache when
+         * we run out of space. 
+         */
+        LOCK(cache);
+        cache->header->busy = 1;
+        cache->header->expunges++;
+        for (i = 0; i < cache->num_slots; i++) {
+            slot_t* p = cache->slots[i];
+            while (p) {
+                remove_slot(cache, &p);
+            }
+            cache->slots[i] = NULL;
+        }
+        cache->header->busy = 0;
+        UNLOCK(cache);
+    } else {
+        slot_t **p;
+
+        /*
+         * If the ttl for the cache is set we walk through and delete stale 
+         * entries.  For the user cache that is slightly confusing since
+         * we have the individual entry ttl's we can look at, but that would be
+         * too much work.  So if you want the user cache expunged, set a high
+         * default apc.user_ttl and still provide a specific ttl for each entry
+         * on insert
+         */
+
+        LOCK(cache);
+        cache->header->busy = 1;
+        cache->header->expunges++;
+        for (i = 0; i < cache->num_slots; i++) {
+            p = &cache->slots[i];
+            while(*p) {
+                /* 
+                 * For the user cache we look at the individual entry ttl values
+                 * and if not set fall back to the default ttl for the user cache
+                 */
+                if((*p)->value->type == APC_CACHE_ENTRY_USER) {
+                    if((*p)->value->data.user.ttl) {
+                        if((*p)->creation_time + (*p)->value->data.user.ttl < t) {
+                            remove_slot(cache, p);
+                            continue;
+                        }
+                    } else if(cache->ttl) {
+                        if((*p)->creation_time + cache->ttl < t) {
+                            remove_slot(cache, p);
+                            continue;
+                        }
+                    }
+                } else if((*p)->access_time < (t - cache->ttl)) {
+                    remove_slot(cache, p);
+                    continue;
+                }
+                p = &(*p)->next;
+            }
+        }
+        cache->header->busy = 0;
+        UNLOCK(cache);
+    }
+}
+/* }}} */
+
+/* {{{ apc_cache_insert */
+int apc_cache_insert(apc_cache_t* cache,
+                     apc_cache_key_t key,
+                     apc_cache_entry_t* value,
+                     time_t t)
+{
+    slot_t** slot;
+
+    if (!value) {
+        return 0;
+    }
+
+#ifdef __DEBUG_APC__
+    fprintf(stderr,"Inserting [%s]\n", value->data.file.filename);
+#endif
+
+    LOCK(cache);
+    process_pending_removals(cache);
+
+    if(key.type == APC_CACHE_KEY_FILE) slot = &cache->slots[hash(key) % cache->num_slots];
+    else slot = &cache->slots[string_nhash_8(key.data.fpfile.fullpath, key.data.fpfile.fullpath_len) % cache->num_slots];
+
+    while(*slot) {
+      if(key.type == (*slot)->key.type) {
+        if(key.type == APC_CACHE_KEY_FILE) {
+            if(key_equals((*slot)->key.data.file, key.data.file)) {
+                /* If existing slot for the same device+inode is different, remove it and insert the new version */
+                if ((*slot)->key.mtime != key.mtime) {
+                    remove_slot(cache, slot);
+                    break;
+                }
+                UNLOCK(cache);
+                return 0;
+            } else if(cache->ttl && (*slot)->access_time < (t - cache->ttl)) {
+                remove_slot(cache, slot);
+                continue;
+            }
+        } else {   /* APC_CACHE_KEY_FPFILE */
+                if(!memcmp((*slot)->key.data.fpfile.fullpath, key.data.fpfile.fullpath, key.data.fpfile.fullpath_len+1)) {
+                /* Hrm.. it's already here, remove it and insert new one */
+                remove_slot(cache, slot);
+                break;
+            } else if(cache->ttl && (*slot)->access_time < (t - cache->ttl)) {
+                remove_slot(cache, slot);
+                continue;
+            }
+        }
+      }
+      slot = &(*slot)->next;
+    }
+
+    if ((*slot = make_slot(key, value, *slot, t)) == NULL) {
+        UNLOCK(cache);
+        return -1;
+    }
+   
+    cache->header->mem_size += value->mem_size;
+    cache->header->num_entries++;
+    cache->header->num_inserts++;
+    
+    UNLOCK(cache);
+    return 1;
+}
+/* }}} */
+
+/* {{{ apc_cache_user_insert */
+int apc_cache_user_insert(apc_cache_t* cache, apc_cache_key_t key, apc_cache_entry_t* value, time_t t, int exclusive TSRMLS_DC)
+{
+    slot_t** slot;
+    size_t* mem_size_ptr = NULL;
+
+    if (!value) {
+        return 0;
+    }
+
+    LOCK(cache);
+    process_pending_removals(cache);
+
+    slot = &cache->slots[string_nhash_8(key.data.user.identifier, key.data.user.identifier_len) % cache->num_slots];
+
+    if (APCG(mem_size_ptr) != NULL) {
+        mem_size_ptr = APCG(mem_size_ptr);
+        APCG(mem_size_ptr) = NULL;
+    }
+
+    while (*slot) {
+        if (!memcmp((*slot)->key.data.user.identifier, key.data.user.identifier, key.data.user.identifier_len)) {
+            /* 
+             * At this point we have found the user cache entry.  If we are doing 
+             * an exclusive insert (apc_add) we are going to bail right away if
+             * the user entry already exists and it has no ttl, or
+             * there is a ttl and the entry has not timed out yet.
+             */
+            if(exclusive && (  !(*slot)->value->data.user.ttl ||
+                              ( (*slot)->value->data.user.ttl && ((*slot)->creation_time + (*slot)->value->data.user.ttl) >= t ) 
+                            ) ) {
+                UNLOCK(cache);
+                return 0;
+            }
+            remove_slot(cache, slot);
+            break;
+        } else 
+        /* 
+         * This is a bit nasty.  The idea here is to do runtime cleanup of the linked list of
+         * slot entries so we don't always have to skip past a bunch of stale entries.  We check
+         * for staleness here and get rid of them by first checking to see if the cache has a global
+         * access ttl on it and removing entries that haven't been accessed for ttl seconds and secondly
+         * we see if the entry has a hard ttl on it and remove it if it has been around longer than its ttl
+         */
+        if((cache->ttl && (*slot)->access_time < (t - cache->ttl)) || 
+           ((*slot)->value->data.user.ttl && ((*slot)->creation_time + (*slot)->value->data.user.ttl) < t)) {
+            remove_slot(cache, slot);
+            continue;
+        }
+        slot = &(*slot)->next;
+    }
+
+    if (mem_size_ptr != NULL) {
+        APCG(mem_size_ptr) = mem_size_ptr;
+    }
+
+    if ((*slot = make_slot(key, value, *slot, t)) == NULL) {
+        UNLOCK(cache);
+        return 0;
+    }
+    if (APCG(mem_size_ptr) != NULL) {
+        value->mem_size = *APCG(mem_size_ptr);
+        cache->header->mem_size += *APCG(mem_size_ptr);
+    }
+    cache->header->num_entries++;
+    cache->header->num_inserts++;
+
+    UNLOCK(cache);
+    return 1;
+}
+/* }}} */
+
+/* {{{ apc_cache_find_slot */
+slot_t* apc_cache_find_slot(apc_cache_t* cache, apc_cache_key_t key, time_t t)
+{
+    slot_t** slot;
+    volatile slot_t* retval = NULL;
+
+    LOCK(cache);
+    if(key.type == APC_CACHE_KEY_FILE) slot = &cache->slots[hash(key) % cache->num_slots];
+    else slot = &cache->slots[string_nhash_8(key.data.fpfile.fullpath, key.data.fpfile.fullpath_len) % cache->num_slots];
+
+    while (*slot) {
+      if(key.type == (*slot)->key.type) {
+        if(key.type == APC_CACHE_KEY_FILE) {
+            if(key_equals((*slot)->key.data.file, key.data.file)) {
+                if((*slot)->key.mtime != key.mtime) {
+                    remove_slot(cache, slot);
+                    cache->header->num_misses++;
+                    UNLOCK(cache);
+                    return NULL;
+                }
+                (*slot)->num_hits++;
+                (*slot)->value->ref_count++;
+                (*slot)->access_time = t;
+                prevent_garbage_collection((*slot)->value);
+                cache->header->num_hits++;
+                retval = *slot;
+                UNLOCK(cache);
+                return (slot_t*)retval;
+            }
+        } else {  /* APC_CACHE_KEY_FPFILE */
+            if(!memcmp((*slot)->key.data.fpfile.fullpath, key.data.fpfile.fullpath, key.data.fpfile.fullpath_len+1)) {
+                /* TTL Check ? */
+                (*slot)->num_hits++;
+                (*slot)->value->ref_count++;
+                (*slot)->access_time = t;
+                prevent_garbage_collection((*slot)->value);
+                cache->header->num_hits++;
+                retval = *slot;
+                UNLOCK(cache);
+                return (slot_t*)retval;
+            }
+        }
+      }
+      slot = &(*slot)->next;
+    }
+    cache->header->num_misses++;
+    UNLOCK(cache);
+    return NULL;
+}
+/* }}} */
+
+/* {{{ apc_cache_find */
+apc_cache_entry_t* apc_cache_find(apc_cache_t* cache, apc_cache_key_t key, time_t t)
+{
+    slot_t * slot = apc_cache_find_slot(cache, key, t);
+    return (slot) ? slot->value : NULL;
+}
+/* }}} */
+
+/* {{{ apc_cache_user_find */
+apc_cache_entry_t* apc_cache_user_find(apc_cache_t* cache, char *strkey, int keylen, time_t t)
+{
+    slot_t** slot;
+    volatile apc_cache_entry_t* value = NULL;
+
+    LOCK(cache);
+
+    slot = &cache->slots[string_nhash_8(strkey, keylen) % cache->num_slots];
+
+    while (*slot) {
+        if (!memcmp((*slot)->key.data.user.identifier, strkey, keylen)) {
+            /* Check to make sure this entry isn't expired by a hard TTL */
+            if((*slot)->value->data.user.ttl && ((*slot)->creation_time + (*slot)->value->data.user.ttl) < t) {
+                remove_slot(cache, slot);
+                UNLOCK(cache);
+                return NULL;
+            }
+            /* Otherwise we are fine, increase counters and return the cache entry */
+            (*slot)->num_hits++;
+            (*slot)->value->ref_count++;
+            (*slot)->access_time = t;
+
+            cache->header->num_hits++;
+            value = (*slot)->value;
+            UNLOCK(cache);
+            return (apc_cache_entry_t*)value;
+        }
+        slot = &(*slot)->next;
+    }
+ 
+    UNLOCK(cache);
+    return NULL;
+}
+/* }}} */
+
+/* {{{ apc_cache_user_delete */
+int apc_cache_user_delete(apc_cache_t* cache, char *strkey, int keylen)
+{
+    slot_t** slot;
+
+    LOCK(cache);
+
+    slot = &cache->slots[string_nhash_8(strkey, keylen) % cache->num_slots];
+
+    while (*slot) {
+        if (!memcmp((*slot)->key.data.user.identifier, strkey, keylen)) {
+            remove_slot(cache, slot);
+            UNLOCK(cache);
+            return 1;
+        }
+        slot = &(*slot)->next;
+    }
+
+    UNLOCK(cache);
+    return 0;
+}
+/* }}} */
+
+/* {{{ apc_cache_release */
+void apc_cache_release(apc_cache_t* cache, apc_cache_entry_t* entry)
+{
+    /* local cache refcount-- is done in apc_local_cache_cleanup */
+    if(entry->local) return;
+
+    LOCK(cache);
+    entry->ref_count--;
+    UNLOCK(cache);
+}
+/* }}} */
+
+/* {{{ apc_cache_make_file_key */
+int apc_cache_make_file_key(apc_cache_key_t* key,
+                       const char* filename,
+                       const char* include_path,
+                       time_t t
+                                          TSRMLS_DC)
+{
+    struct stat *tmp_buf=NULL;
+    struct apc_fileinfo_t fileinfo = { {0}, };
+    int len;
+
+    assert(key != NULL);
+
+    if (!filename || !SG(request_info).path_translated) {
+#ifdef __DEBUG_APC__
+        fprintf(stderr,"No filename and no path_translated - bailing\n");
+#endif
+        return 0;
+       }
+
+    len = strlen(filename);
+    if(APCG(fpstat)==0) {
+        if(IS_ABSOLUTE_PATH(filename,len)) {
+            key->data.fpfile.fullpath = filename;
+            key->data.fpfile.fullpath_len = len;
+            key->mtime = t;
+            key->type = APC_CACHE_KEY_FPFILE;
+        } else {
+            if (apc_search_paths(filename, include_path, &fileinfo) != 0) {
+                apc_wprint("apc failed to locate %s - bailing", filename);
+                return 0;
+            }
+
+            if(!realpath(fileinfo.fullpath, APCG(canon_path))) {
+                apc_wprint("realpath failed to canonicalize %s - bailing", filename);
+                return 0;
+            }
+
+            key->data.fpfile.fullpath = APCG(canon_path);
+            key->data.fpfile.fullpath_len = strlen(APCG(canon_path));
+            key->mtime = t;
+            key->type = APC_CACHE_KEY_FPFILE;
+        }
+        return 1;
+    } 
+
+    if(!strcmp(SG(request_info).path_translated, filename)) {
+        tmp_buf = sapi_get_stat(TSRMLS_C);  /* Apache has already done this stat() for us */
+    }
+    if(tmp_buf) { 
+               fileinfo.st_buf = *tmp_buf;
+    } else {
+        if (apc_search_paths(filename, include_path, &fileinfo) != 0) {
+#ifdef __DEBUG_APC__
+            fprintf(stderr,"Stat failed %s - bailing (%s) (%d)\n",filename,SG(request_info).path_translated);
+#endif
+            return 0;
+        }
+    }
+
+    if(APCG(max_file_size) < fileinfo.st_buf.st_size) {
+#ifdef __DEBUG_APC__
+        fprintf(stderr,"File is too big %s (%d - %ld) - bailing\n",filename,t,fileinfo.st_buf.st_size);
+#endif
+        return 0;
+    }
+
+    /*
+     * This is a bit of a hack.
+     *
+     * Here I am checking to see if the file is at least 2 seconds old.  
+     * The idea is that if the file is currently being written to then its
+     * mtime is going to match or at most be 1 second off of the current
+     * request time and we want to avoid caching files that have not been
+     * completely written.  Of course, people should be using atomic 
+     * mechanisms to push files onto live web servers, but adding this
+     * tiny safety is easier than educating the world.  This is now
+     * configurable, but the default is still 2 seconds.
+     */
+    if(APCG(file_update_protection) && (t - fileinfo.st_buf.st_mtime < APCG(file_update_protection))) { 
+#ifdef __DEBUG_APC__
+        fprintf(stderr,"File is too new %s (%d - %d) - bailing\n",filename,t,fileinfo.st_buf.st_mtime);
+#endif
+        return 0;
+    }
+
+    key->data.file.device = fileinfo.st_buf.st_dev;
+    key->data.file.inode  = fileinfo.st_buf.st_ino;
+    /* 
+     * If working with content management systems that like to munge the mtime, 
+     * it might be appropriate to key off of the ctime to be immune to systems
+     * that try to backdate a template.  If the mtime is set to something older
+     * than the previous mtime of a template we will obviously never see this
+     * "older" template.  At some point the Smarty templating system did this.
+     * I generally disagree with using the ctime here because you lose the 
+     * ability to warm up new content by saving it to a temporary file, hitting
+     * it once to cache it and then renaming it into its permanent location so
+     * set the apc.stat_ctime=true to enable this check.
+     */
+    if(APCG(stat_ctime)) {
+        key->mtime  = (fileinfo.st_buf.st_ctime > fileinfo.st_buf.st_mtime) ? fileinfo.st_buf.st_ctime : fileinfo.st_buf.st_mtime; 
+    } else {
+        key->mtime = fileinfo.st_buf.st_mtime;
+    }
+    key->type = APC_CACHE_KEY_FILE;
+    return 1;
+}
+/* }}} */
+
+/* {{{ apc_cache_make_user_key */
+int apc_cache_make_user_key(apc_cache_key_t* key, char* identifier, int identifier_len, const time_t t)
+{
+    assert(key != NULL);
+
+    if (!identifier)
+        return 0;
+
+    key->data.user.identifier = identifier;
+    key->data.user.identifier_len = identifier_len;
+    key->mtime = t;
+    key->type = APC_CACHE_KEY_USER;
+    return 1;
+}
+/* }}} */
+
+/* {{{ apc_cache_make_file_entry */
+apc_cache_entry_t* apc_cache_make_file_entry(const char* filename,
+                                        zend_op_array* op_array,
+                                        apc_function_t* functions,
+                                        apc_class_t* classes)
+{
+    apc_cache_entry_t* entry;
+
+    entry = (apc_cache_entry_t*) apc_sma_malloc(sizeof(apc_cache_entry_t));
+    if (!entry) return NULL;
+
+    entry->data.file.filename  = apc_xstrdup(filename, apc_sma_malloc);
+    if(!entry->data.file.filename) {
+#ifdef __DEBUG_APC__
+        fprintf(stderr,"apc_cache_make_file_entry: entry->data.file.filename is NULL - bailing\n");
+#endif
+        apc_sma_free(entry);
+        return NULL;
+    }
+#ifdef __DEBUG_APC__
+    fprintf(stderr,"apc_cache_make_file_entry: entry->data.file.filename is [%s]\n",entry->data.file.filename);
+#endif
+    entry->data.file.op_array  = op_array;
+    entry->data.file.functions = functions;
+    entry->data.file.classes   = classes;
+    entry->type = APC_CACHE_ENTRY_FILE;
+    entry->ref_count = 0;
+    entry->mem_size = 0;
+    entry->local = 0;
+    return entry;
+}
+/* }}} */
+
+/* {{{ apc_cache_store_zval */
+zval* apc_cache_store_zval(zval* dst, const zval* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    smart_str buf = {0};
+    php_serialize_data_t var_hash;
+    TSRMLS_FETCH();
+
+    if((src->type & ~IS_CONSTANT_INDEX) == IS_OBJECT) {
+        if(!dst) {
+            CHECK(dst = (zval*) allocate(sizeof(zval)));
+        }
+               
+        PHP_VAR_SERIALIZE_INIT(var_hash);
+        php_var_serialize(&buf, (zval**)&src, &var_hash TSRMLS_CC);
+        PHP_VAR_SERIALIZE_DESTROY(var_hash);
+               
+        dst->type = IS_NULL; /* in case we fail */
+        if(buf.c) {
+            dst->type = src->type & ~IS_CONSTANT_INDEX;
+            dst->value.str.len = buf.len;
+            CHECK(dst->value.str.val = apc_xmemcpy(buf.c, buf.len+1, allocate));
+            dst->type = src->type;
+            smart_str_free(&buf);
+        }
+        return dst; 
+    } else {
+        
+        /* Maintain a list of zvals we've copied to properly handle recursive structures */
+        HashTable *old = APCG(copied_zvals);
+        APCG(copied_zvals) = emalloc(sizeof(HashTable));
+        zend_hash_init(APCG(copied_zvals), 0, NULL, NULL, 0);
+        
+        dst = apc_copy_zval(dst, src, allocate, deallocate);
+
+        if(APCG(copied_zvals)) {
+            zend_hash_destroy(APCG(copied_zvals));
+            efree(APCG(copied_zvals));
+        }
+
+        APCG(copied_zvals) = old;
+
+        return dst;
+    }
+}
+/* }}} */
+
+/* {{{ apc_cache_fetch_zval */
+zval* apc_cache_fetch_zval(zval* dst, const zval* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    TSRMLS_FETCH();
+    if((src->type & ~IS_CONSTANT_INDEX) == IS_OBJECT) {
+        php_unserialize_data_t var_hash;
+        const unsigned char *p = (unsigned char*)Z_STRVAL_P(src);
+
+        PHP_VAR_UNSERIALIZE_INIT(var_hash);
+        if(!php_var_unserialize(&dst, &p, p + Z_STRLEN_P(src), &var_hash TSRMLS_CC)) {
+            PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
+            zval_dtor(dst);
+            php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Error at offset %ld of %d bytes", (long)((char*)p - Z_STRVAL_P(src)), Z_STRLEN_P(src));
+            dst->type = IS_NULL;
+        }
+        PHP_VAR_UNSERIALIZE_DESTROY(var_hash);         
+        return dst; 
+    } else {
+    
+        /* Maintain a list of zvals we've copied to properly handle recursive structures */
+        HashTable *old = APCG(copied_zvals);
+        APCG(copied_zvals) = emalloc(sizeof(HashTable));
+        zend_hash_init(APCG(copied_zvals), 0, NULL, NULL, 0);
+        
+        dst = apc_copy_zval(dst, src, allocate, deallocate);
+
+        if(APCG(copied_zvals)) {
+            zend_hash_destroy(APCG(copied_zvals));
+            efree(APCG(copied_zvals));
+        }
+
+        APCG(copied_zvals) = old;
+
+        return dst;
+    }
+}
+/* }}} */
+
+/* {{{ apc_cache_free_zval */
+void apc_cache_free_zval(zval* src, apc_free_t deallocate)
+{
+    TSRMLS_FETCH();
+    if ((src->type & ~IS_CONSTANT_INDEX) == IS_OBJECT) {
+        if (src->value.str.val) {
+               deallocate(src->value.str.val);
+        }
+        deallocate(src);
+    } else {
+        /* Maintain a list of zvals we've copied to properly handle recursive structures */
+        HashTable *old = APCG(copied_zvals);
+        APCG(copied_zvals) = emalloc(sizeof(HashTable));
+        zend_hash_init(APCG(copied_zvals), 0, NULL, NULL, 0);
+        
+        apc_free_zval(src, deallocate);
+
+        if(APCG(copied_zvals)) {
+            zend_hash_destroy(APCG(copied_zvals));
+            efree(APCG(copied_zvals));
+        }
+
+        APCG(copied_zvals) = old;
+    }
+}
+/* }}} */
+
+/* {{{ apc_cache_make_user_entry */
+apc_cache_entry_t* apc_cache_make_user_entry(const char* info, int info_len, const zval* val, const unsigned int ttl)
+{
+    apc_cache_entry_t* entry;
+
+    entry = (apc_cache_entry_t*) apc_sma_malloc(sizeof(apc_cache_entry_t));
+    if (!entry) return NULL;
+
+    entry->data.user.info = apc_xmemcpy(info, info_len, apc_sma_malloc);
+    entry->data.user.info_len = info_len;
+    if(!entry->data.user.info) {
+        apc_sma_free(entry);
+        return NULL;
+    }
+    entry->data.user.val = apc_cache_store_zval(NULL, val, apc_sma_malloc, apc_sma_free);
+    if(!entry->data.user.val) {
+        apc_sma_free(entry->data.user.info);
+        apc_sma_free(entry);
+        return NULL;
+    }
+    INIT_PZVAL(entry->data.user.val);
+    entry->data.user.ttl = ttl;
+    entry->type = APC_CACHE_ENTRY_USER;
+    entry->ref_count = 0;
+    entry->mem_size = 0;
+    entry->local = 0;
+    return entry;
+}
+/* }}} */
+
+/* {{{ apc_cache_free_entry */
+void apc_cache_free_entry(apc_cache_entry_t* entry)
+{
+    if (entry != NULL) {
+        assert(entry->ref_count == 0);
+        switch(entry->type) {
+            case APC_CACHE_ENTRY_FILE:
+                apc_sma_free(entry->data.file.filename);
+                apc_free_op_array(entry->data.file.op_array, apc_sma_free);
+                apc_free_functions(entry->data.file.functions, apc_sma_free);
+                apc_free_classes(entry->data.file.classes, apc_sma_free);
+                break;
+            case APC_CACHE_ENTRY_USER:
+                apc_sma_free(entry->data.user.info);
+                apc_cache_free_zval(entry->data.user.val, apc_sma_free);
+                break;
+        }
+        apc_sma_free(entry);
+    }
+}
+/* }}} */
+
+/* {{{ apc_cache_info */
+apc_cache_info_t* apc_cache_info(apc_cache_t* cache, zend_bool limited)
+{
+    apc_cache_info_t* info;
+    slot_t* p;
+    int i;
+
+    if(!cache) return NULL;
+
+    LOCK(cache);
+
+    info = (apc_cache_info_t*) apc_emalloc(sizeof(apc_cache_info_t));
+    if(!info) {
+        UNLOCK(cache);
+        return NULL;
+    }
+    info->num_slots = cache->num_slots;
+    info->ttl = cache->ttl;
+    info->num_hits = cache->header->num_hits;
+    info->num_misses = cache->header->num_misses;
+    info->list = NULL;
+    info->deleted_list = NULL;
+    info->start_time = cache->header->start_time;
+    info->expunges = cache->header->expunges;
+    info->mem_size = cache->header->mem_size;
+    info->num_entries = cache->header->num_entries;
+    info->num_inserts = cache->header->num_inserts;
+
+    if(!limited) {
+        /* For each hashtable slot */
+        for (i = 0; i < info->num_slots; i++) {
+            p = cache->slots[i];
+            for (; p != NULL; p = p->next) {
+                apc_cache_link_t* link = (apc_cache_link_t*) apc_emalloc(sizeof(apc_cache_link_t));
+
+                if(p->value->type == APC_CACHE_ENTRY_FILE) {
+                    link->data.file.filename = apc_xstrdup(p->value->data.file.filename, apc_emalloc);
+                    link->data.file.device = p->key.data.file.device;
+                    link->data.file.inode = p->key.data.file.inode;
+                    link->type = APC_CACHE_ENTRY_FILE;
+                } else if(p->value->type == APC_CACHE_ENTRY_USER) {
+                    link->data.user.info = apc_xmemcpy(p->value->data.user.info, p->value->data.user.info_len, apc_emalloc);
+                    link->data.user.ttl = p->value->data.user.ttl;
+                    link->type = APC_CACHE_ENTRY_USER;
+                }
+                link->num_hits = p->num_hits;
+                link->mtime = p->key.mtime;
+                link->creation_time = p->creation_time;
+                link->deletion_time = p->deletion_time;
+                link->access_time = p->access_time;
+                link->ref_count = p->value->ref_count;
+                link->mem_size = p->value->mem_size;
+                link->next = info->list;
+                info->list = link;
+            }
+        }
+
+        /* For each slot pending deletion */
+        for (p = cache->header->deleted_list; p != NULL; p = p->next) {
+            apc_cache_link_t* link = (apc_cache_link_t*) apc_emalloc(sizeof(apc_cache_link_t));
+
+            if(p->value->type == APC_CACHE_ENTRY_FILE) {
+                link->data.file.filename = apc_xstrdup(p->value->data.file.filename, apc_emalloc);
+                if(p->key.type == APC_CACHE_KEY_FILE) {
+                    link->data.file.device = p->key.data.file.device;
+                    link->data.file.inode = p->key.data.file.inode;
+                } else { /* This is a no-stat fullpath file entry */
+                    link->data.file.device = 0;
+                    link->data.file.inode = 0;
+                }
+                link->type = APC_CACHE_ENTRY_FILE;
+            } else if(p->value->type == APC_CACHE_ENTRY_USER) {
+                link->data.user.info = apc_xmemcpy(p->value->data.user.info, p->value->data.user.info_len, apc_emalloc);
+                link->data.user.ttl = p->value->data.user.ttl;
+                link->type = APC_CACHE_ENTRY_USER;
+            }
+            link->num_hits = p->num_hits;
+            link->mtime = p->key.mtime;
+            link->creation_time = p->creation_time;
+            link->deletion_time = p->deletion_time;
+            link->access_time = p->access_time;
+            link->ref_count = p->value->ref_count;
+            link->mem_size = p->value->mem_size;
+            link->next = info->deleted_list;
+            info->deleted_list = link;
+        }
+    }
+
+    UNLOCK(cache);
+    return info;
+}
+/* }}} */
+
+/* {{{ apc_cache_free_info */
+void apc_cache_free_info(apc_cache_info_t* info)
+{
+    apc_cache_link_t* p = info->list;
+    apc_cache_link_t* q = NULL;
+    while (p != NULL) {
+        q = p;
+        p = p->next;
+        if(q->type == APC_CACHE_ENTRY_FILE) apc_efree(q->data.file.filename);
+        else if(q->type == APC_CACHE_ENTRY_USER) apc_efree(q->data.user.info);
+        apc_efree(q);
+    }
+    p = info->deleted_list;
+    while (p != NULL) {
+        q = p;
+        p = p->next;
+        if(q->type == APC_CACHE_ENTRY_FILE) apc_efree(q->data.file.filename);
+        else if(q->type == APC_CACHE_ENTRY_USER) apc_efree(q->data.user.info);
+        apc_efree(q);
+    }
+    apc_efree(info);
+}
+/* }}} */
+
+/* {{{ apc_cache_unlock */
+void apc_cache_unlock(apc_cache_t* cache)
+{
+    UNLOCK(cache);
+}
+/* }}} */
+
+/* {{{ apc_cache_busy */
+zend_bool apc_cache_busy(apc_cache_t* cache)
+{
+    return cache->header->busy;
+}
+/* }}} */
+
+#if NONBLOCKING_LOCK_AVAILABLE
+/* {{{ apc_cache_write_lock */
+zend_bool apc_cache_write_lock(apc_cache_t* cache)
+{
+    return apc_lck_nb_lock(cache->header->wrlock);
+}
+/* }}} */
+
+/* {{{ apc_cache_write_unlock */
+void apc_cache_write_unlock(apc_cache_t* cache)
+{
+    apc_lck_unlock(cache->header->wrlock);
+}
+/* }}} */
+#endif
+
+/* {{{ make_local_slot */
+static local_slot_t* make_local_slot(apc_local_cache_t* cache, local_slot_t* lslot, slot_t* slot, time_t t) 
+{
+    apc_cache_entry_t* value;
+
+    value = apc_emalloc(sizeof(apc_cache_entry_t));
+    memcpy(value, slot->value, sizeof(apc_cache_entry_t)); /* bitwise copy */
+    value->local = 1;
+
+    lslot->original = slot;
+    lslot->value = value;
+    lslot->num_hits = 0;
+    lslot->creation_time = t;
+
+    return lslot; /* for what joy ? ... consistency */
+}
+/* }}} */
+
+/* {{{ free_local_slot */
+static void free_local_slot(apc_local_cache_t* cache, local_slot_t* lslot) 
+{
+    local_slot_t * dead = NULL;
+    if(!lslot->original) return;
+
+    /* TODO: Bad design to allocate memory in a free_* - fix when bored (hehe) */
+    dead = apc_emalloc(sizeof(local_slot_t));
+    memcpy(dead, lslot, sizeof(local_slot_t)); /* bitwise copy */
+
+    lslot->original = NULL;
+    lslot->value = NULL;
+
+    dead->next = cache->dead_list;
+    cache->dead_list = dead;
+}
+/* }}} */
+
+/* {{{ apc_local_cache_create */
+apc_local_cache_t* apc_local_cache_create(apc_cache_t *shmcache, int num_slots, int ttl)
+{
+    apc_local_cache_t* cache = NULL;
+
+    cache = (apc_local_cache_t*) apc_emalloc(sizeof(apc_local_cache_t));
+
+    cache->slots = (local_slot_t*) (apc_emalloc(sizeof(local_slot_t) * num_slots));
+    memset(cache->slots, 0, sizeof(local_slot_t) * num_slots);
+
+    cache->shmcache = shmcache;
+    cache->num_slots = num_slots;
+    cache->ttl = ttl;
+    cache->num_hits = 0;
+    cache->generation = shmcache->header->expunges;
+    cache->dead_list = NULL;
+
+    return cache;
+}
+/* }}} */
+
+/* {{{ apc_local_cache_cleanup */
+void apc_local_cache_cleanup(apc_local_cache_t* cache) {
+    local_slot_t * lslot;
+    time_t t = time(0);
+    
+    int i;
+    for(i = 0; i < cache->num_slots; i++) {
+        lslot = &cache->slots[i];
+        /* every slot lives for exactly TTL seconds */
+        if((lslot->original && lslot->creation_time < (t - cache->ttl)) ||
+                cache->generation != cache->shmcache->header->expunges) {
+            free_local_slot(cache, lslot);
+        }
+    }
+
+    LOCK(cache->shmcache);
+    for(lslot = cache->dead_list; lslot != NULL; lslot = lslot->next) {
+        lslot->original->num_hits += lslot->num_hits;
+        lslot->original->value->ref_count--; /* apc_cache_release(cache->shmcache, lslot->original->value); */
+        apc_efree(lslot->value);
+    }
+    UNLOCK(cache->shmcache);
+
+    cache->dead_list = NULL;
+}
+/* }}} */
+
+/* {{{ apc_local_cache_destroy */
+void apc_local_cache_destroy(apc_local_cache_t* cache)
+{
+    int i;
+    for(i = 0; i < cache->num_slots; i++) {
+        free_local_slot(cache, &cache->slots[i]);
+    }
+
+    apc_local_cache_cleanup(cache);
+
+    LOCK(cache->shmcache);
+    cache->shmcache->header->num_hits += cache->num_hits;
+    UNLOCK(cache->shmcache);
+
+    apc_efree(cache->slots);
+    apc_efree(cache);
+}
+/* }}} */
+
+/* {{{ apc_local_cache_find */
+apc_cache_entry_t* apc_local_cache_find(apc_local_cache_t* cache, apc_cache_key_t key, time_t t)
+{
+    slot_t* slot;
+    local_slot_t* lslot; 
+
+    if(key.type == APC_CACHE_KEY_FILE) lslot = &cache->slots[hash(key) % cache->num_slots];
+    else lslot = &cache->slots[string_nhash_8(key.data.fpfile.fullpath, key.data.fpfile.fullpath_len) % cache->num_slots];
+
+    slot = lslot->original;
+
+    if(slot && key.type == slot->key.type) {
+        if(slot->access_time < (t - cache->ttl)) {
+            goto not_found;
+        }
+        if(key.type == APC_CACHE_KEY_FILE && 
+           key_equals(slot->key.data.file, key.data.file)) {
+            if(slot->key.mtime != key.mtime) {
+                free_local_slot(cache, lslot);
+                goto not_found;
+            }
+            cache->num_hits++;
+            lslot->num_hits++;
+            lslot->original->access_time = t; /* unlocked write, but last write wins */
+            return lslot->value;
+        } else if(key.type == APC_CACHE_KEY_FPFILE) {
+            if(!memcmp(slot->key.data.fpfile.fullpath, key.data.fpfile.fullpath, key.data.fpfile.fullpath_len+1)) {
+                cache->num_hits++;
+                lslot->num_hits++;
+                lslot->original->access_time = t; /* unlocked write, but last write wins */
+                return lslot->value;
+            }
+        }
+    }
+not_found:
+    if(apc_cache_busy(cache->shmcache)) {
+        return NULL;
+    }
+
+    slot = apc_cache_find_slot(cache->shmcache, key, t);
+
+    if(!slot) return NULL;
+   
+    /* i.e maintain a sort of top list */
+    if(lslot->original == NULL || (lslot->original->num_hits + lslot->num_hits)  < slot->num_hits) {
+        free_local_slot(cache, lslot);
+        make_local_slot(cache, lslot, slot, t); 
+        return lslot->value;
+    }
+    return slot->value;
+}
+/* }}} */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_cache.h php-5.2.5/ext/apc/apc_cache.h
--- php-5.2.5-orig/ext/apc/apc_cache.h  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_cache.h       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,312 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt.                                 |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_cache.h,v 3.46 2007/10/05 23:06:56 gopalv Exp $ */
+
+#ifndef APC_CACHE_H
+#define APC_CACHE_H
+
+/*
+ * This module defines the shared memory file cache. Basically all of the
+ * logic for storing and retrieving cache entries lives here.
+ */
+
+#include "apc.h"
+#include "apc_compile.h"
+
+#define APC_CACHE_ENTRY_FILE   1
+#define APC_CACHE_ENTRY_USER   2
+
+#define APC_CACHE_KEY_FILE     1
+#define APC_CACHE_KEY_USER     2
+#define APC_CACHE_KEY_FPFILE   3
+
+/* {{{ struct definition: apc_cache_key_t */
+#define T apc_cache_t*
+typedef struct apc_cache_t apc_cache_t; /* opaque cache type */
+
+typedef union _apc_cache_key_data_t {
+    struct {
+        dev_t device;             /* the filesystem device */
+        ino_t inode;              /* the filesystem inode */
+    } file;
+    struct {
+        const char *identifier;
+        int identifier_len;
+    } user;
+    struct {
+        const char *fullpath;
+        int fullpath_len;
+    } fpfile;
+} apc_cache_key_data_t;
+
+typedef struct apc_cache_key_t apc_cache_key_t;
+struct apc_cache_key_t {
+    apc_cache_key_data_t data;
+    time_t mtime;                 /* the mtime of this cached entry */
+    unsigned char type;
+};
+/* }}} */
+
+/* {{{ struct definition: apc_cache_entry_t */
+typedef union _apc_cache_entry_value_t {
+    struct {
+        char *filename;             /* absolute path to source file */
+        zend_op_array* op_array;    /* op_array allocated in shared memory */
+        apc_function_t* functions;  /* array of apc_function_t's */
+        apc_class_t* classes;       /* array of apc_class_t's */
+    } file;
+    struct {
+        char *info; 
+        int info_len; 
+        zval *val;
+        unsigned int ttl;
+    } user;
+} apc_cache_entry_value_t;
+
+typedef struct apc_cache_entry_t apc_cache_entry_t;
+struct apc_cache_entry_t {
+    apc_cache_entry_value_t data;
+    unsigned char type;
+    unsigned char local;
+    int ref_count;
+    size_t mem_size;
+};
+/* }}} */
+
+/*
+ * apc_cache_create creates the shared memory compiler cache. This function
+ * should be called just once (ideally in the web server parent process, e.g.
+ * in apache), otherwise you will end up with multiple caches (which won't
+ * necessarily break anything). Returns a pointer to the cache object.
+ *
+ * size_hint is a "hint" at the total number of source files that will be
+ * cached. It determines the physical size of the hash table. Passing 0 for
+ * this argument will use a reasonable default value.
+ *
+ * gc_ttl is the maximum time a cache entry may speed on the garbage
+ * collection list. This is basically a work around for the inherent
+ * unreliability of our reference counting mechanism (see apc_cache_release).
+ *
+ * ttl is the maximum time a cache entry can idle in a slot in case the slot
+ * is needed.  This helps in cleaning up the cache and ensuring that entries 
+ * hit frequently stay cached and ones not hit very often eventually disappear.
+ */
+extern T apc_cache_create(int size_hint, int gc_ttl, int ttl);
+
+/*
+ * apc_cache_destroy releases any OS resources associated with a cache object.
+ * Under apache, this function can be safely called by the child processes
+ * when they exit.
+ */
+extern void apc_cache_destroy(T cache);
+
+/*
+ * apc_cache_clear empties a cache. This can safely be called at any time,
+ * even while other server processes are executing cached source files.
+ */
+extern void apc_cache_clear(T cache);
+
+/*
+ * apc_cache_insert adds an entry to the cache, using a filename as a key.
+ * Internally, the filename is translated to a canonical representation, so
+ * that relative and absolute filenames will map to a single key. Returns
+ * non-zero if the file was successfully inserted, 0 otherwise. If 0 is
+ * returned, the caller must free the cache entry by calling
+ * apc_cache_free_entry (see below).
+ *
+ * key is the value created by apc_cache_make_file_key for file keys.
+ *
+ * value is a cache entry returned by apc_cache_make_entry (see below).
+ */
+extern int apc_cache_insert(T cache, apc_cache_key_t key,
+                            apc_cache_entry_t* value, time_t t);
+
+extern int apc_cache_user_insert(T cache, apc_cache_key_t key,
+                            apc_cache_entry_t* value, time_t t, int exclusive TSRMLS_DC);
+
+/*
+ * apc_cache_find searches for a cache entry by filename, and returns a
+ * pointer to the entry if found, NULL otherwise.
+ *
+ * key is a value created by apc_cache_make_file_key for file keys.
+ */
+extern apc_cache_entry_t* apc_cache_find(T cache, apc_cache_key_t key, time_t t);
+
+/*
+ * apc_cache_user_find searches for a cache entry by its hashed identifier, 
+ * and returns a pointer to the entry if found, NULL otherwise.
+ *
+ */
+extern apc_cache_entry_t* apc_cache_user_find(T cache, char* strkey, int keylen, time_t t);
+
+/*
+ * apc_cache_user_delete finds an entry in the user cache and deletes it.
+ */
+extern int apc_cache_user_delete(apc_cache_t* cache, char *strkey, int keylen);
+
+/* apc_cach_fetch_zval takes a zval in the cache and reconstructs a runtime
+ * zval from it.
+ *
+ */
+zval* apc_cache_fetch_zval(zval* dst, const zval* src, apc_malloc_t allocate, apc_free_t deallocate);
+
+/*
+ * apc_cache_release decrements the reference count associated with a cache
+ * entry. Calling apc_cache_find automatically increments the reference count,
+ * and this function must be called post-execution to return the count to its
+ * original value. Failing to do so will prevent the entry from being
+ * garbage-collected.
+ *
+ * entry is the cache entry whose ref count you want to decrement.
+ */
+extern void apc_cache_release(T cache, apc_cache_entry_t* entry);
+
+/*
+ * apc_cache_make_file_key creates a key object given a relative or absolute
+ * filename and an optional list of auxillary paths to search. include_path is
+ * searched if the filename cannot be found relative to the current working
+ * directory.
+ *
+ * key points to caller-allocated storage (must not be null).
+ *
+ * filename is the path to the source file.
+ *
+ * include_path is a colon-separated list of directories to search.
+ *
+ * and finally we pass in the current request time so we can avoid
+ * caching files with a current mtime which tends to indicate that
+ * they are still being written to.
+ */
+extern int apc_cache_make_file_key(apc_cache_key_t* key,
+                                   const char* filename,
+                                   const char* include_path,
+                                   time_t t
+                                                              TSRMLS_DC);
+
+/*
+ * apc_cache_make_file_entry creates an apc_cache_entry_t object given a filename
+ * and the compilation results returned by the PHP compiler.
+ */
+extern apc_cache_entry_t* apc_cache_make_file_entry(const char* filename,
+                                                    zend_op_array* op_array,
+                                                    apc_function_t* functions,
+                                                    apc_class_t* classes);
+/*
+ * apc_cache_make_user_entry creates an apc_cache_entry_t object given an info string
+ * and the zval to be stored.
+ */
+extern apc_cache_entry_t* apc_cache_make_user_entry(const char* info, int info_len, const zval *val, const unsigned int ttl);
+
+extern int apc_cache_make_user_key(apc_cache_key_t* key, char* identifier, int identifier_len, const time_t t);
+
+/*
+ * Frees all memory associated with an object returned by apc_cache_make_entry
+ * (see above).
+ */
+extern void apc_cache_free_entry(apc_cache_entry_t* entry);
+
+/* {{{ struct definition: apc_cache_link_data_t */
+typedef union _apc_cache_link_data_t {
+    struct {
+        char *filename;
+        dev_t device;
+        ino_t inode;
+    } file;
+    struct {
+        char *info;
+        unsigned int ttl;
+    } user;
+} apc_cache_link_data_t;
+/* }}} */
+
+/* {{{ struct definition: apc_cache_link_t */
+typedef struct apc_cache_link_t apc_cache_link_t;
+struct apc_cache_link_t {
+    apc_cache_link_data_t data;
+    unsigned char type;
+    int num_hits;
+    time_t mtime;
+    time_t creation_time;
+    time_t deletion_time;
+    time_t access_time;
+    int ref_count;
+    size_t mem_size;
+    apc_cache_link_t* next;
+};
+/* }}} */
+
+/* {{{ struct definition: apc_cache_info_t */
+typedef struct apc_cache_info_t apc_cache_info_t;
+struct apc_cache_info_t {
+    int num_slots;
+    int num_hits;
+    int num_misses;
+    int ttl;
+    apc_cache_link_t* list;
+    apc_cache_link_t* deleted_list;
+    time_t start_time;
+    int expunges;
+    int num_entries;
+    int num_inserts;
+    size_t mem_size;
+};
+/* }}} */
+
+extern apc_cache_info_t* apc_cache_info(T cache, zend_bool limited);
+extern void apc_cache_free_info(apc_cache_info_t* info);
+extern void apc_cache_expunge(apc_cache_t* cache, time_t t);
+extern void apc_cache_unlock(apc_cache_t* cache);
+extern zend_bool apc_cache_busy(apc_cache_t* cache);
+extern zend_bool apc_cache_write_lock(apc_cache_t* cache);
+extern void apc_cache_write_unlock(apc_cache_t* cache);
+
+/* 
+ * Process local cache, which keeps a refcount hungry version of the slots
+ * for quick access without a lock - as long as the entry exists in local
+ * cache, the refcount of the shm version will be +1 more than required.
+ * It holds no data, only a shallow copy of apc_cache_entry.
+ */
+typedef struct apc_local_cache_t apc_local_cache_t; /* process-local cache */ 
+
+extern apc_local_cache_t* apc_local_cache_create(apc_cache_t *shmcache, int num_slots, int ttl);
+extern apc_cache_entry_t* apc_local_cache_find(apc_local_cache_t* cache, apc_cache_key_t key, time_t t);
+extern void apc_local_cache_destroy(apc_local_cache_t* cache);
+extern void apc_local_cache_cleanup(apc_local_cache_t* cache);
+
+#undef T
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_compile.c php-5.2.5/ext/apc/apc_compile.c
--- php-5.2.5-orig/ext/apc/apc_compile.c        1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_compile.c     2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,2529 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt.                                 |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_compile.c,v 3.87 2007/08/25 13:09:13 gopalv Exp $ */
+
+#include "apc_compile.h"
+#include "apc_globals.h"
+#include "apc_zend.h"
+
+typedef void* (*ht_copy_fun_t)(void*, void*, apc_malloc_t, apc_free_t);
+typedef void  (*ht_free_fun_t)(void*, apc_free_t);
+typedef int (*ht_check_copy_fun_t)(Bucket*, va_list);
+
+#ifdef ZEND_ENGINE_2
+typedef void (*ht_fixup_fun_t)(Bucket*, zend_class_entry*, zend_class_entry*);
+#endif
+
+#define CHECK(p) { if ((p) == NULL) return NULL; }
+
+/* {{{ internal function declarations */
+
+static int is_derived_class(zend_op_array* op_array, const char* key, int key_size);
+
+static zend_function* my_bitwise_copy_function(zend_function*, zend_function*, apc_malloc_t);
+
+/*
+ * The "copy" functions perform deep-copies on a particular data structure
+ * (passed as the second argument). They also optionally allocate space for
+ * the destination data structure if the first argument is null.
+ */
+static zval** my_copy_zval_ptr(zval**, const zval**, apc_malloc_t, apc_free_t);
+static zval* my_copy_zval(zval*, const zval*, apc_malloc_t, apc_free_t);
+static znode* my_copy_znode(znode*, znode*, apc_malloc_t, apc_free_t);
+static zend_op* my_copy_zend_op(zend_op*, zend_op*, apc_malloc_t, apc_free_t);
+static zend_function* my_copy_function(zend_function*, zend_function*, apc_malloc_t, apc_free_t);
+static zend_function_entry* my_copy_function_entry(zend_function_entry*, zend_function_entry*, apc_malloc_t, apc_free_t);
+static zend_class_entry* my_copy_class_entry(zend_class_entry*, zend_class_entry*, apc_malloc_t, apc_free_t);
+static HashTable* my_copy_hashtable_ex(HashTable*, HashTable*, ht_copy_fun_t, ht_free_fun_t, int, apc_malloc_t, apc_free_t, ht_check_copy_fun_t, ...);
+#define my_copy_hashtable( dst, src, copy_fn, free_fn, holds_ptr, allocate, deallocate) \
+    my_copy_hashtable_ex(dst, src, copy_fn, free_fn, holds_ptr, allocate, deallocate, NULL)
+static HashTable* my_copy_static_variables(zend_op_array* src, apc_malloc_t allocate, apc_free_t deallocate);
+#ifdef ZEND_ENGINE_2
+static zend_property_info* my_copy_property_info(zend_property_info* dst, zend_property_info* src, apc_malloc_t allocate, apc_free_t deallocate);
+static zend_arg_info* my_copy_arg_info_array(zend_arg_info*, zend_arg_info*, uint, apc_malloc_t, apc_free_t);
+static zend_arg_info* my_copy_arg_info(zend_arg_info*, zend_arg_info*, apc_malloc_t, apc_free_t);
+#endif
+/*
+ * The "destroy" functions free the memory associated with a particular data
+ * structure but do not free the pointer to the data structure.
+ *
+ * my_destroy_zval() returns SUCCESS or FAILURE, FAILURE means that
+ * the zval* has other references elsewhere 
+ */
+static int  my_destroy_zval(zval*, apc_free_t); 
+static void my_destroy_zval_ptr(zval**, apc_free_t);
+static void my_destroy_zend_op(zend_op*, apc_free_t);
+static void my_destroy_znode(znode*, apc_free_t);
+static void my_destroy_function(zend_function*, apc_free_t);
+static void my_destroy_function_entry(zend_function_entry*, apc_free_t);
+static void my_destroy_class_entry(zend_class_entry*, apc_free_t);
+static void my_destroy_hashtable(HashTable*, ht_free_fun_t, apc_free_t);
+static void my_destroy_op_array(zend_op_array*, apc_free_t);
+#ifdef ZEND_ENGINE_2
+static void my_destroy_property_info(zend_property_info*, apc_free_t);
+static void my_destroy_arg_info_array(zend_arg_info* src, uint, apc_free_t);
+static void my_destroy_arg_info(zend_arg_info*, apc_free_t);
+#endif
+
+/*
+ * The "free" functions work exactly like their "destroy" counterparts (see
+ * above) but also free the pointer to the data structure.
+ */
+static void my_free_zval_ptr(zval**, apc_free_t);
+static void my_free_function(zend_function*, apc_free_t);
+static void my_free_hashtable(HashTable*, ht_free_fun_t, apc_free_t);
+#ifdef ZEND_ENGINE_2
+static void my_free_property_info(zend_property_info* src, apc_free_t);
+static void my_free_arg_info_array(zend_arg_info*, uint, apc_free_t);
+static void my_free_arg_info(zend_arg_info*, apc_free_t);
+#endif
+
+/*
+ * The "fixup" functions need for ZEND_ENGINE_2
+ */
+#ifdef ZEND_ENGINE_2
+static void my_fixup_function( Bucket *p, zend_class_entry *src, zend_class_entry *dst );
+static void my_fixup_hashtable( HashTable *ht, ht_fixup_fun_t fixup, zend_class_entry *src, zend_class_entry *dst );
+/* my_fixup_function_for_execution is the same as my_fixup_function
+ * but named differently for clarity
+ */
+#define my_fixup_function_for_execution my_fixup_function
+
+#ifdef ZEND_ENGINE_2_2
+static void my_fixup_property_info( Bucket *p, zend_class_entry *src, zend_class_entry *dst );
+#define my_fixup_property_info_for_execution my_fixup_property_info
+#endif
+
+#endif
+
+/*
+ * These functions return "1" if the member/function is
+ * defined/overridden in the 'current' class and not inherited.
+ */
+static int my_check_copy_function(Bucket* src, va_list args);
+static int my_check_copy_default_property(Bucket* p, va_list args);
+#ifdef ZEND_ENGINE_2
+static int my_check_copy_property_info(Bucket* src, va_list args);
+static int my_check_copy_static_member(Bucket* src, va_list args);
+#endif
+
+/* }}} */
+
+/* {{{ check_op_array_integrity */
+#if 0
+static void check_op_array_integrity(zend_op_array* src)
+{
+    int i, j;
+
+    /* These sorts of checks really aren't particularly effective, but they
+     * can provide a welcome sanity check when debugging. Just don't enable
+     * for production use!  */
+
+    assert(src->refcount != NULL);
+    assert(src->opcodes != NULL);
+    assert(src->last > 0);
+
+    for (i = 0; i < src->last; i++) {
+        zend_op* op = &src->opcodes[i];
+        znode* nodes[] = { &op->result, &op->op1, &op->op2 };
+        for (j = 0; j < 3; j++) {
+            assert(nodes[j]->op_type == IS_CONST ||
+                   nodes[j]->op_type == IS_VAR ||
+                   nodes[j]->op_type == IS_TMP_VAR ||
+                   nodes[j]->op_type == IS_UNUSED);
+
+            if (nodes[j]->op_type == IS_CONST) {
+                int type = nodes[j]->u.constant.type;
+                assert(type == IS_RESOURCE ||
+                       type == IS_BOOL ||
+                       type == IS_LONG ||
+                       type == IS_DOUBLE ||
+                       type == IS_NULL ||
+                       type == IS_CONSTANT ||
+                       type == IS_STRING ||
+                       type == FLAG_IS_BC ||
+                       type == IS_ARRAY ||
+                       type == IS_CONSTANT_ARRAY ||
+                       type == IS_OBJECT);
+            }
+        }
+    }
+}
+#endif
+/* }}} */
+
+/* {{{ is_derived_class */
+static int is_derived_class(zend_op_array* op_array, const char* key, int key_size)
+{
+    int i;
+
+    /*
+     * Scan the op_array for execution-time class declarations of derived
+     * classes. If we find one whose key matches our current class key, we
+     * know the current class is a derived class.
+     *
+     * This check is exceedingly inefficient (fortunately it only has to occur
+     * once, when the source file is first compiled and cached), but the
+     * compiler should save this information for us -- definitely a candidate
+     * for a Zend Engine patch.
+     *
+     * XXX checking for derived classes provides a minimal (albeit measurable)
+     * speed up. It may not be worth the added complexity -- considere
+     * removing this optimization.
+     */
+
+    for (i = 0; i < op_array->last; i++) {
+        zend_op* op = &op_array->opcodes[i];
+
+#ifdef ZEND_ENGINE_2        
+        if (op->opcode == ZEND_DECLARE_CLASS &&
+            op->extended_value == ZEND_DECLARE_INHERITED_CLASS)
+#else            
+        if (op->opcode == ZEND_DECLARE_FUNCTION_OR_CLASS &&
+            op->extended_value == ZEND_DECLARE_INHERITED_CLASS)
+#endif            
+        {
+            if (op->op1.u.constant.value.str.len == key_size &&
+                !memcmp(op->op1.u.constant.value.str.val, key, key_size))
+            {
+                return 1;
+            }
+        }
+    }
+
+    return 0;
+}
+/* }}} */
+
+/* {{{ my_bitwise_copy_function */
+static zend_function* my_bitwise_copy_function(zend_function* dst, zend_function* src, apc_malloc_t allocate)
+{
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zend_function*) allocate(sizeof(src[0])));
+    }
+
+    /* We only need to do a bitwise copy */
+    memcpy(dst, src, sizeof(src[0]));
+
+    return dst;
+}
+/* }}} */
+
+/* {{{ my_copy_zval_ptr */
+static zval** my_copy_zval_ptr(zval** dst, const zval** src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+    zval* dst_new;
+    
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zval**) allocate(sizeof(zval*)));
+        local_dst_alloc = 1;
+    }
+
+    if(!(dst[0] = (zval*) allocate(sizeof(zval)))) {
+        if(local_dst_alloc) deallocate(dst);
+        return NULL;
+    }
+    dst_new = my_copy_zval(*dst, *src, allocate, deallocate);
+    if(dst_new != *dst) {
+        deallocate(*dst);
+        *dst = dst_new;
+    }
+
+    (*dst)->refcount = (*src)->refcount;
+    (*dst)->is_ref = (*src)->is_ref;
+    
+    return dst;
+}
+/* }}} */
+
+/* {{{ my_copy_zval */
+static zval* my_copy_zval(zval* dst, const zval* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    zval **tmp;
+    TSRMLS_FETCH();
+    
+    assert(dst != NULL);
+    assert(src != NULL);
+
+    memcpy(dst, src, sizeof(src[0]));
+
+    switch (src->type & ~IS_CONSTANT_INDEX) {
+    case IS_RESOURCE:
+    case IS_BOOL:
+    case IS_LONG:
+    case IS_DOUBLE:
+    case IS_NULL:
+        break;
+
+    case IS_CONSTANT:
+    case IS_STRING:
+#ifndef ZEND_ENGINE_2        
+    case FLAG_IS_BC:
+#endif        
+        if (src->value.str.val) {
+            CHECK(dst->value.str.val = apc_xmemcpy(src->value.str.val,
+                                                   src->value.str.len+1,
+                                                   allocate));
+        }
+        break;
+    
+    case IS_ARRAY:
+
+        if(APCG(copied_zvals)) {
+            if(zend_hash_index_find(APCG(copied_zvals), (ulong)src, (void**)&tmp) == SUCCESS) {
+                (*tmp)->refcount++;
+                return *tmp;
+            }
+        
+            zend_hash_index_update(APCG(copied_zvals), (ulong)src, (void**)&dst, sizeof(zval*), NULL);
+        }
+        /* fall through */
+ 
+    case IS_CONSTANT_ARRAY:
+
+        CHECK(dst->value.ht =
+            my_copy_hashtable(NULL,
+                              src->value.ht,
+                              (ht_copy_fun_t) my_copy_zval_ptr,
+                              (ht_free_fun_t) my_free_zval_ptr,
+                              1,
+                              allocate, deallocate));
+        break;
+
+    case IS_OBJECT:
+#ifndef ZEND_ENGINE_2        
+        CHECK(dst->value.obj.ce =
+            my_copy_class_entry(NULL, src->value.obj.ce, allocate, deallocate));
+
+        if(!(dst->value.obj.properties = my_copy_hashtable(NULL,
+                              src->value.obj.properties,
+                              (ht_copy_fun_t) my_copy_zval_ptr,
+                              (ht_free_fun_t) my_free_zval_ptr,
+                              1,
+                              allocate, deallocate))) {
+            my_destroy_class_entry(dst->value.obj.ce, deallocate);
+            return NULL;
+        }
+        break;
+#else
+       dst->type = IS_NULL;
+#endif        
+        break;
+
+    default:
+        assert(0);
+    }
+
+    return dst;
+}
+/* }}} */
+
+/* {{{ my_copy_znode */
+static znode* my_copy_znode(znode* dst, znode* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    assert(dst != NULL);
+    assert(src != NULL);
+
+    memcpy(dst, src, sizeof(src[0]));
+
+#ifdef IS_CV
+    assert(dst ->op_type == IS_CONST ||
+           dst ->op_type == IS_VAR ||
+           dst ->op_type == IS_CV ||
+           dst ->op_type == IS_TMP_VAR ||
+           dst ->op_type == IS_UNUSED);
+#else
+    assert(dst ->op_type == IS_CONST ||
+           dst ->op_type == IS_VAR ||
+           dst ->op_type == IS_TMP_VAR ||
+           dst ->op_type == IS_UNUSED);
+#endif
+
+    if (src->op_type == IS_CONST) {
+        if(!my_copy_zval(&dst->u.constant, &src->u.constant, allocate, deallocate)) {
+            return NULL;
+        }
+    }
+
+    return dst;
+}
+/* }}} */
+
+/* {{{ my_copy_zend_op */
+static zend_op* my_copy_zend_op(zend_op* dst, zend_op* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    assert(dst != NULL);
+    assert(src != NULL);
+
+    memcpy(dst, src, sizeof(src[0]));
+
+    if( my_copy_znode(&dst->result, &src->result, allocate, deallocate) == NULL 
+            || my_copy_znode(&dst->op1, &src->op1, allocate, deallocate) == NULL
+            || my_copy_znode(&dst->op2, &src->op2, allocate, deallocate) == NULL)
+    {
+        return NULL;
+    }
+
+    return dst;
+}
+/* }}} */
+
+/* {{{ my_copy_function */
+static zend_function* my_copy_function(zend_function* dst, zend_function* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+       TSRMLS_FETCH();
+
+    assert(src != NULL);
+
+    if(!dst) local_dst_alloc = 1;
+    CHECK(dst = my_bitwise_copy_function(dst, src, allocate));
+
+    switch (src->type) {
+    case ZEND_INTERNAL_FUNCTION:
+    case ZEND_OVERLOADED_FUNCTION:
+        /* shallow copy because op_array is internal */
+        dst->op_array = src->op_array;
+        break;
+        
+    case ZEND_USER_FUNCTION:
+    case ZEND_EVAL_CODE:
+        if(!apc_copy_op_array(&dst->op_array,
+                                &src->op_array,
+                                allocate, deallocate TSRMLS_CC)) {
+            if(local_dst_alloc) deallocate(dst);
+            return NULL;
+        }
+        break;
+
+    default:
+        assert(0);
+    }
+#ifdef ZEND_ENGINE_2
+    /* 
+     * op_array bitwise copying overwrites what ever you modified
+     * before apc_copy_op_array - which is why this code is outside 
+     * my_bitwise_copy_function. 
+     */
+
+    /* zend_do_inheritance will re-look this up, because the pointers
+     * in prototype are from a function table of another class. It just
+     * helps if that one is from EG(class_table).
+     */
+    dst->common.prototype = NULL; 
+
+    /* once a method is marked as ZEND_ACC_IMPLEMENTED_ABSTRACT then you
+     * have to carry around a prototype. Thankfully zend_do_inheritance
+     * sets this properly as well
+     */
+    dst->common.fn_flags = src->common.fn_flags & (~ZEND_ACC_IMPLEMENTED_ABSTRACT);
+#endif
+
+
+    return dst;
+}
+/* }}} */
+
+/* {{{ my_copy_function_entry */
+static zend_function_entry* my_copy_function_entry(zend_function_entry* dst, zend_function_entry* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zend_function_entry*) allocate(sizeof(src[0])));
+        local_dst_alloc = 1;
+    }
+
+    /* Start with a bitwise copy */
+    memcpy(dst, src, sizeof(src[0]));
+
+    dst->fname = NULL;
+#ifdef ZEND_ENGINE_2
+    dst->arg_info = NULL;
+#else
+    dst->func_arg_types = NULL;
+#endif
+
+    if (src->fname) {
+        if(!(dst->fname = apc_xstrdup(src->fname, allocate))) {
+            goto cleanup;
+        }
+    }
+
+#ifdef ZEND_ENGINE_2    
+    if (src->arg_info) {
+        if(!(dst->arg_info = my_copy_arg_info_array(NULL,
+                                                src->arg_info,
+                                                src->num_args,
+                                                allocate,
+                                                deallocate))) {
+            goto cleanup;
+        }
+    }
+#else    
+    if (src->func_arg_types) {
+        if(!(dst->func_arg_types = apc_xmemcpy(src->func_arg_types,
+                                                src->func_arg_types[0]+1,
+                                                allocate))) {
+            goto cleanup;
+        }
+    }
+#endif
+
+    return dst;
+
+cleanup:
+    if(dst->fname) deallocate(dst->fname);
+    if(local_dst_alloc) deallocate(dst);
+    return NULL;
+}
+/* }}} */
+
+#ifdef ZEND_ENGINE_2
+/* {{{ my_copy_property_info */
+static zend_property_info* my_copy_property_info(zend_property_info* dst, zend_property_info* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+    
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zend_property_info*) allocate(sizeof(*src)));
+        local_dst_alloc = 1;
+    }
+
+    /* Start with a bitwise copy */
+    memcpy(dst, src, sizeof(*src));
+
+    dst->name = NULL;
+#if defined(ZEND_ENGINE_2) && PHP_MINOR_VERSION > 0
+    dst->doc_comment = NULL;
+#endif
+
+    if (src->name) {
+        /* private members are stored inside property_info as a mangled
+         * string of the form:
+         *      \0<classname>\0<membername>\0
+         */
+        if(!(dst->name = 
+                    apc_xmemcpy(src->name, src->name_length+1, allocate))) {
+            goto cleanup;
+        }
+    }
+
+#if defined(ZEND_ENGINE_2) && PHP_MINOR_VERSION > 0
+    if (src->doc_comment) {
+        if( !(dst->doc_comment =
+                    apc_xmemcpy(src->doc_comment, src->doc_comment_len+1, allocate))) {
+            goto cleanup;
+        }
+    }
+#endif
+
+    return dst;
+
+cleanup:
+    if(dst->name) deallocate(dst->name);
+#if defined(ZEND_ENGINE_2) && PHP_MINOR_VERSION > 0
+    if(dst->doc_comment) deallocate(dst->doc_comment);
+#endif
+    if(local_dst_alloc) deallocate(dst);
+    return NULL;
+}
+/* }}} */
+
+/* {{{ my_copy_property_info_for_execution */
+static zend_property_info* my_copy_property_info_for_execution(zend_property_info* dst, zend_property_info* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+    
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zend_property_info*) allocate(sizeof(*src)));
+        local_dst_alloc = 1;
+    }
+
+    /* We need only a shallow copy */
+    memcpy(dst, src, sizeof(*src));
+
+    return dst;
+}
+/* }}} */
+
+/* {{{ my_copy_arg_info_array */
+static zend_arg_info* my_copy_arg_info_array(zend_arg_info* dst, zend_arg_info* src, uint num_args, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+    int i = 0;
+
+    
+    if (!dst) {
+        CHECK(dst = (zend_arg_info*) allocate(sizeof(*src)*num_args));
+        local_dst_alloc = 1;
+    }
+
+    /* Start with a bitwise copy */
+    memcpy(dst, src, sizeof(*src)*num_args);
+
+    for(i=0; i < num_args; i++) {
+        if(!(my_copy_arg_info( &dst[i], &src[i], allocate, deallocate))) {            
+            if(i) my_destroy_arg_info_array(dst, i-1, deallocate);
+            if(local_dst_alloc) deallocate(dst);
+            return NULL;
+        }
+    }
+
+    return dst;    
+}
+/* }}} */
+
+/* {{{ my_copy_arg_info */
+static zend_arg_info* my_copy_arg_info(zend_arg_info* dst, zend_arg_info* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+    
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zend_arg_info*) allocate(sizeof(*src)));
+        local_dst_alloc = 1;
+    }
+
+    /* Start with a bitwise copy */
+    memcpy(dst, src, sizeof(*src));
+
+    dst->name = NULL;
+    dst->class_name = NULL;
+
+    if (src->name) {
+        if(!(dst->name = 
+                    apc_xmemcpy(src->name, src->name_len+1, allocate))) {
+            goto cleanup;
+        }
+    }
+
+    if (src->class_name) {
+        if(!(dst->class_name = 
+                    apc_xmemcpy(src->class_name, src->class_name_len+1, allocate))) {
+            goto cleanup;
+        }
+    }
+
+    return dst;
+
+cleanup:
+    if(dst->name) deallocate(dst->name);
+    if(dst->class_name) deallocate(dst->name);
+    if(local_dst_alloc) deallocate(dst);
+    return NULL;
+}
+/* }}} */
+#endif
+
+/* {{{ my_copy_class_entry */
+static zend_class_entry* my_copy_class_entry(zend_class_entry* dst, zend_class_entry* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+    int i = 0;
+
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zend_class_entry*) allocate(sizeof(*src)));
+        local_dst_alloc = 1;
+    }
+
+    /* Start with a bitwise copy */
+    memcpy(dst, src, sizeof(*src));
+
+    dst->name = NULL;
+    dst->builtin_functions = NULL;
+    memset(&dst->function_table, 0, sizeof(dst->function_table));
+    memset(&dst->default_properties, 0, sizeof(dst->default_properties));
+#ifndef ZEND_ENGINE_2
+    dst->refcount = NULL;
+#else
+    dst->static_members = NULL;
+    dst->doc_comment = NULL;
+    dst->filename = NULL;
+    memset(&dst->properties_info, 0, sizeof(dst->properties_info));
+    memset(&dst->constants_table, 0, sizeof(dst->constants_table));
+    memset(&dst->default_static_members, 0, sizeof(dst->default_static_members));
+#endif
+
+    if (src->name) {
+        if(!(dst->name = apc_xstrdup(src->name, allocate))) {
+            goto cleanup;
+        }
+    }
+
+#ifndef ZEND_ENGINE_2    
+    if(!(dst->refcount = apc_xmemcpy(src->refcount,
+                                      sizeof(src->refcount[0]),
+                                      allocate))) {
+        goto cleanup;
+    }
+#endif        
+
+    if(!(my_copy_hashtable_ex(&dst->function_table,
+                            &src->function_table,
+                            (ht_copy_fun_t) my_copy_function,
+                            (ht_free_fun_t) my_free_function,
+                            0,
+                            allocate, deallocate,
+                            (ht_check_copy_fun_t) my_check_copy_function,
+                            src))) {
+        goto cleanup;
+    }
+
+#ifdef ZEND_ENGINE_2
+
+    /* the interfaces are populated at runtime using ADD_INTERFACE */
+    dst->interfaces = NULL; 
+
+    /* the current count includes inherited interfaces as well,
+       the real dynamic ones are the first <n> which are zero'd
+       out in zend_do_end_class_declaration */
+    for(i = 0 ; i < src->num_interfaces ; i++) {
+        if(src->interfaces[i])
+        {
+            dst->num_interfaces = i;
+            break;
+        }
+    }
+
+    /* these will either be set inside my_fixup_hashtable or 
+     * they will be copied out from parent inside zend_do_inheritance 
+     */
+    dst->constructor =  NULL;
+    dst->destructor = NULL;
+    dst->clone = NULL;
+    dst->__get = NULL;
+    dst->__set = NULL;
+    dst->__unset = NULL;
+    dst->__isset = NULL;
+    dst->__call = NULL;
+#ifdef ZEND_ENGINE_2_2
+    dst->__tostring = NULL;
+#endif
+
+    /* unset function proxies */
+    dst->serialize_func = NULL;
+    dst->unserialize_func = NULL;
+    
+    my_fixup_hashtable(&dst->function_table, (ht_fixup_fun_t)my_fixup_function, src, dst);
+#endif
+
+    if(!(my_copy_hashtable_ex(&dst->default_properties,
+                            &src->default_properties,
+                            (ht_copy_fun_t) my_copy_zval_ptr,
+                            (ht_free_fun_t) my_free_zval_ptr,
+                            1,
+                            allocate,deallocate,
+                            (ht_check_copy_fun_t) my_check_copy_default_property,
+                            src))) {
+        goto cleanup;
+    }
+
+#ifdef ZEND_ENGINE_2
+    
+    if(!(my_copy_hashtable_ex(&dst->properties_info,
+                            &src->properties_info,
+                            (ht_copy_fun_t) my_copy_property_info,
+                            (ht_free_fun_t) my_free_property_info,
+                            0,
+                            allocate, deallocate,
+                            (ht_check_copy_fun_t) my_check_copy_property_info,
+                            src))) {
+        goto cleanup;
+    }
+
+#ifdef ZEND_ENGINE_2_2
+    /* php5.2 introduced a scope attribute for property info */
+    my_fixup_hashtable(&dst->properties_info, (ht_fixup_fun_t)my_fixup_property_info_for_execution, src, dst);
+#endif
+    
+    if(!my_copy_hashtable_ex(&dst->default_static_members,
+                            &src->default_static_members,
+                            (ht_copy_fun_t) my_copy_zval_ptr,
+                            (ht_free_fun_t) my_free_zval_ptr,
+                            1,
+                            allocate, deallocate,
+                            (ht_check_copy_fun_t) my_check_copy_static_member,
+                            src,
+                            &src->default_static_members)) {
+        goto cleanup;
+    }
+    if(src->static_members != &src->default_static_members)
+    {
+        if(!(dst->static_members = my_copy_hashtable_ex(NULL,
+                            src->static_members,
+                            (ht_copy_fun_t) my_copy_zval_ptr,
+                            (ht_free_fun_t) my_free_zval_ptr,
+                            1,
+                            allocate, deallocate,
+                            (ht_check_copy_fun_t) my_check_copy_static_member,
+                            src,
+                            src->static_members))) {
+            goto cleanup;
+        }
+    }
+    else
+    {
+        dst->static_members = &dst->default_static_members;
+    }
+
+    if(!(my_copy_hashtable(&dst->constants_table,
+                            &src->constants_table,
+                            (ht_copy_fun_t) my_copy_zval_ptr,
+                            (ht_free_fun_t) my_free_zval_ptr,
+                            1,
+                            allocate, deallocate))) {
+        goto cleanup;
+    }
+
+    if (src->doc_comment) {
+        if(!(dst->doc_comment =
+                    apc_xmemcpy(src->doc_comment, src->doc_comment_len+1, allocate))) {
+            goto cleanup;
+        }
+    }
+#endif
+    
+    if (src->builtin_functions) {
+        int i, n;
+
+        for (n = 0; src->type == ZEND_INTERNAL_CLASS && src->builtin_functions[n].fname != NULL; n++) {}
+
+        if(!(dst->builtin_functions =
+            (zend_function_entry*)
+                allocate((n + 1) * sizeof(zend_function_entry)))) {
+            goto cleanup;
+        }
+
+
+        for (i = 0; i < n; i++) {
+            if(!my_copy_function_entry(&dst->builtin_functions[i],
+                                   &src->builtin_functions[i],
+                                   allocate, deallocate)) {
+                int ii;
+
+                for(ii=i-1; i>=0; i--) my_destroy_function_entry(&dst->builtin_functions[ii], deallocate);
+                goto cleanup;
+            }
+        }
+        dst->builtin_functions[n].fname = NULL;
+    }
+
+#ifdef ZEND_ENGINE_2
+    if (src->filename) {
+        if(!(dst->filename = apc_xstrdup(src->filename, allocate))) {
+            goto cleanup;
+        }
+    }
+#endif
+   
+    return dst;
+
+
+cleanup:
+    if(dst->name) deallocate(dst->name);
+#ifdef ZEND_ENGINE_2
+    if(dst->doc_comment) deallocate(dst->doc_comment);
+    if(dst->filename) deallocate(dst->filename);
+#else
+    if(dst->refcount) deallocate(dst->refcount);
+#endif
+    
+    if(dst->builtin_functions) deallocate(dst->builtin_functions);
+    if(dst->function_table.arBuckets) my_destroy_hashtable(&dst->function_table, (ht_free_fun_t) my_free_function, deallocate);
+    if(dst->default_properties.arBuckets) my_destroy_hashtable(&dst->default_properties, (ht_free_fun_t) my_free_zval_ptr, deallocate);
+
+#ifdef ZEND_ENGINE_2
+    if(dst->properties_info.arBuckets) my_destroy_hashtable(&dst->properties_info, (ht_free_fun_t) my_free_property_info, deallocate);
+    if(dst->default_static_members.arBuckets)
+    {
+        my_destroy_hashtable(&dst->default_static_members, (ht_free_fun_t) my_free_zval_ptr, deallocate);
+    }
+    if(dst->static_members && dst->static_members != &(dst->default_static_members))
+    {
+        my_destroy_hashtable(dst->static_members, (ht_free_fun_t) my_free_zval_ptr, deallocate);
+        deallocate(dst->static_members);
+    }
+    if(dst->constants_table.arBuckets) my_destroy_hashtable(&dst->constants_table, (ht_free_fun_t) my_free_zval_ptr, deallocate);
+#endif
+    if(local_dst_alloc) deallocate(dst);
+
+    return NULL;
+}
+/* }}} */
+
+/* {{{ my_copy_hashtable */
+static HashTable* my_copy_hashtable_ex(HashTable* dst,
+                                    HashTable* src,
+                                    ht_copy_fun_t copy_fn,
+                                    ht_free_fun_t free_fn,
+                                    int holds_ptrs,
+                                    apc_malloc_t allocate, 
+                                    apc_free_t deallocate,
+                                    ht_check_copy_fun_t check_fn,
+                                    ...)
+{
+    Bucket* curr = NULL;
+    Bucket* prev = NULL;
+    Bucket* newp = NULL;
+    int first = 1;
+    int local_dst_alloc = 0;
+    int index = 0;
+
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (HashTable*) allocate(sizeof(src[0])));
+        local_dst_alloc = 1;
+    }
+
+    memcpy(dst, src, sizeof(src[0]));
+
+    /* allocate buckets for the new hashtable */
+    if(!(dst->arBuckets = allocate(dst->nTableSize * sizeof(Bucket*)))) {
+        if(local_dst_alloc) deallocate(dst);
+        return NULL;
+    }
+
+    memset(dst->arBuckets, 0, dst->nTableSize * sizeof(Bucket*));
+    dst->pInternalPointer = NULL;
+    dst->pListHead = NULL;
+    
+    for (curr = src->pListHead; curr != NULL; curr = curr->pListNext) {
+        int n = curr->h % dst->nTableSize;
+
+        if(check_fn) {
+            va_list args;
+            va_start(args, check_fn);
+
+            /* Call the check_fn to see if the current bucket 
+             * needs to be copied out
+             */
+            if(!check_fn(curr, args)) {
+                dst->nNumOfElements--;
+                continue;
+            }
+
+            va_end(args);
+        }
+
+        /* create a copy of the bucket 'curr' */
+        if(!(newp =
+            (Bucket*) apc_xmemcpy(curr,
+                                  sizeof(Bucket) + curr->nKeyLength - 1,
+                                  allocate))) {
+            goto cleanup;
+        }
+
+        /* insert 'newp' into the linked list at its hashed index */
+        if (dst->arBuckets[n]) {
+            newp->pNext = dst->arBuckets[n];
+            newp->pLast = NULL;
+            newp->pNext->pLast = newp;
+        }
+        else {
+            newp->pNext = newp->pLast = NULL;
+        }
+
+        dst->arBuckets[n] = newp;
+
+        /* copy the bucket data using our 'copy_fn' callback function */
+        if(!(newp->pData = copy_fn(NULL, curr->pData, allocate, deallocate))) {
+            goto cleanup;
+        }
+
+        if (holds_ptrs) {
+            memcpy(&newp->pDataPtr, newp->pData, sizeof(void*));
+        }
+        else {
+            newp->pDataPtr = NULL;
+        }
+
+        /* insert 'newp' into the table-thread linked list */
+        newp->pListLast = prev;
+        newp->pListNext = NULL;
+
+        if (prev) {
+            prev->pListNext = newp;
+        }
+
+        if (first) {
+            dst->pListHead = newp;
+            first = 0;
+        }
+
+        prev = newp;
+    }
+
+    dst->pListTail = newp;
+
+    return dst;
+    
+    cleanup:
+    for(index = 0; index < dst->nTableSize; index++)
+    {
+        curr = dst->arBuckets[index];
+        while(curr != NULL)
+        {
+            Bucket * tmp = curr;
+            if(curr->pData && free_fn)
+            {
+                free_fn(curr->pData, deallocate);
+            }
+            curr = curr->pNext;
+            deallocate(tmp);
+        }
+    }   
+    deallocate(dst->arBuckets);
+    if(local_dst_alloc) deallocate(dst);
+    else dst->arBuckets = NULL;
+
+    return NULL;
+}
+/* }}} */
+
+/* {{{ my_copy_static_variables */
+static HashTable* my_copy_static_variables(zend_op_array* src, apc_malloc_t allocate, apc_free_t deallocate)
+{ 
+    if (src->static_variables == NULL) {
+        return NULL;
+    }
+
+    return my_copy_hashtable(NULL,
+                             src->static_variables,
+                             (ht_copy_fun_t) my_copy_zval_ptr,
+                             (ht_free_fun_t) my_free_zval_ptr,
+                             1,
+                             allocate, deallocate);
+}
+/* }}} */
+
+/* {{{ apc_copy_zval */
+zval* apc_copy_zval(zval* dst, const zval* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    int local_dst_alloc = 0;
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zval*) allocate(sizeof(zval)));
+        local_dst_alloc = 1;
+    }
+
+    dst = my_copy_zval(dst, src, allocate, deallocate);
+    if(!dst) {
+        if(local_dst_alloc) deallocate(dst);
+        return NULL;
+    }
+    return dst; 
+}
+/* }}} */
+
+#ifdef ZEND_ENGINE_2
+/* {{{ apc_fixup_op_array_jumps */
+static void apc_fixup_op_array_jumps(zend_op_array *dst, zend_op_array *src )
+{
+    int i;
+
+    for (i=0; i < dst->last; ++i) {
+        zend_op *zo = &(dst->opcodes[i]);
+        /*convert opline number to jump address*/
+        switch (zo->opcode) {
+            case ZEND_JMP:
+                /*Note: if src->opcodes != dst->opcodes then we need to the opline according to src*/
+                zo->op1.u.jmp_addr = dst->opcodes + (zo->op1.u.jmp_addr - src->opcodes);
+                break;
+            case ZEND_JMPZ:
+            case ZEND_JMPNZ:
+            case ZEND_JMPZ_EX:
+            case ZEND_JMPNZ_EX:
+                zo->op2.u.jmp_addr = dst->opcodes + (zo->op2.u.jmp_addr - src->opcodes);
+                break;
+            default:
+                break;
+        }
+    }
+}
+/* }}} */
+#endif
+
+/* {{{ apc_copy_op_array */
+zend_op_array* apc_copy_op_array(zend_op_array* dst, zend_op_array* src, apc_malloc_t allocate, apc_free_t deallocate TSRMLS_DC)
+{
+    int i;
+    int local_dst_alloc = 0;
+    apc_fileinfo_t fileinfo;
+    char canon_path[MAXPATHLEN];
+    char *fullpath = NULL;
+#ifdef ZEND_ENGINE_2
+    apc_opflags_t * flags = NULL;
+#endif
+
+    assert(src != NULL);
+
+    if (!dst) {
+        CHECK(dst = (zend_op_array*) allocate(sizeof(src[0])));
+        local_dst_alloc = 1;
+    }
+
+    if(APCG(apc_optimize_function)) {
+        APCG(apc_optimize_function)(src TSRMLS_CC);
+    }
+    
+    /* start with a bitwise copy of the array */
+    memcpy(dst, src, sizeof(src[0]));
+
+    dst->function_name = NULL;
+    dst->filename = NULL;
+    dst->refcount = NULL;
+    dst->opcodes = NULL;
+    dst->brk_cont_array = NULL;
+    dst->static_variables = NULL;
+#ifdef ZEND_ENGINE_2
+    dst->try_catch_array = NULL;
+    dst->arg_info = NULL;
+    dst->doc_comment = NULL;
+#else
+    dst->arg_types = NULL;
+#endif
+#ifdef ZEND_ENGINE_2_1
+    dst->vars = NULL;
+#endif
+
+    /* copy the arg types array (if set) */
+#ifdef ZEND_ENGINE_2
+    if (src->arg_info) {
+        if(!(dst->arg_info = my_copy_arg_info_array(NULL,
+                                                src->arg_info,
+                                                src->num_args,
+                                                allocate,
+                                                deallocate))) {
+            goto cleanup;
+        }
+    }
+#else    
+    if (src->arg_types) {
+        if(!(dst->arg_types = apc_xmemcpy(src->arg_types,
+                        sizeof(src->arg_types[0]) * (src->arg_types[0]+1),
+                        allocate))) {
+            goto cleanup;
+        }
+    }
+#endif
+
+    if (src->function_name) {
+        if(!(dst->function_name = apc_xstrdup(src->function_name, allocate))) {
+            goto cleanup;
+        }
+    }
+    if (src->filename) {
+        if(!(dst->filename = apc_xstrdup(src->filename, allocate))) {
+            goto cleanup;
+        }
+    }
+
+    if(!(dst->refcount = apc_xmemcpy(src->refcount,
+                                      sizeof(src->refcount[0]),
+                                      allocate))) {
+        goto cleanup;
+    }
+
+    /* deep-copy the opcodes */
+    if(!(dst->opcodes = (zend_op*) allocate(sizeof(zend_op) * src->last))) {
+        goto cleanup;
+    }
+
+#ifdef ZEND_ENGINE_2
+    if(APCG(reserved_offset) != -1) {
+        /* Insanity alert: the void* pointer is cast into an apc_opflags_t 
+         * struct. apc_zend_init() checks to ensure that it fits in a void* */
+        flags = (apc_opflags_t*) & (dst->reserved[APCG(reserved_offset)]);
+        memset(flags, 0, sizeof(apc_opflags_t));
+        /* assert(sizeof(apc_opflags_t) < sizeof(dst->reserved)); */
+    }
+#endif
+    
+    for (i = 0; i < src->last; i++) {
+#ifdef ZEND_ENGINE_2
+        zend_op *zo = &(src->opcodes[i]);
+        /* a lot of files are merely constant arrays with no jumps */
+        switch (zo->opcode) {
+            case ZEND_JMP:
+            case ZEND_JMPZ:
+            case ZEND_JMPNZ:
+            case ZEND_JMPZ_EX:
+            case ZEND_JMPNZ_EX:
+                if(flags != NULL) {
+                    flags->has_jumps = 1;
+                }
+                break;
+#ifdef ZEND_ENGINE_2
+            /* auto_globals_jit was not in php-4.3.* */
+            case ZEND_FETCH_R:
+            case ZEND_FETCH_W:
+            case ZEND_FETCH_IS:
+            case ZEND_FETCH_FUNC_ARG:
+                if(PG(auto_globals_jit) && flags != NULL)
+                {
+                     /* The fetch is only required if auto_globals_jit=1  */
+                    if(zo->op2.u.EA.type == ZEND_FETCH_GLOBAL &&
+                            zo->op1.op_type == IS_CONST && 
+                            zo->op1.u.constant.type == IS_STRING) {
+                        znode * varname = &zo->op1;
+                        if (varname->u.constant.value.str.val[0] == '_') {
+#define SET_IF_AUTOGLOBAL(member) \
+    if(!strcmp(varname->u.constant.value.str.val, #member)) \
+        flags->member = 1 /* no ';' here */
+                            SET_IF_AUTOGLOBAL(_GET);
+                            else SET_IF_AUTOGLOBAL(_POST);
+                            else SET_IF_AUTOGLOBAL(_COOKIE);
+                            else SET_IF_AUTOGLOBAL(_SERVER);
+                            else SET_IF_AUTOGLOBAL(_ENV);
+                            else SET_IF_AUTOGLOBAL(_FILES);
+                            else SET_IF_AUTOGLOBAL(_REQUEST);
+                            else if(zend_is_auto_global(
+                                            varname->u.constant.value.str.val,
+                                            varname->u.constant.value.str.len
+                                            TSRMLS_CC))
+                            {
+                                flags->unknown_global = 1;
+                            }
+                        }
+                    }
+                }
+                break;
+#endif
+            case ZEND_RECV_INIT:
+                if(zo->op2.op_type == IS_CONST &&
+                    zo->op2.u.constant.type == IS_CONSTANT_ARRAY) {
+                    if(flags != NULL) {
+                        flags->deep_copy = 1;
+                    }
+                }
+                break;
+            default:
+                if((zo->op1.op_type == IS_CONST &&
+                    zo->op1.u.constant.type == IS_CONSTANT_ARRAY) ||
+                    (zo->op2.op_type == IS_CONST &&
+                        zo->op2.u.constant.type == IS_CONSTANT_ARRAY)) {
+                    if(flags != NULL) {
+                        flags->deep_copy = 1;
+                    }
+                }
+                break;
+        }
+#endif
+        if(!(my_copy_zend_op(dst->opcodes+i, src->opcodes+i, allocate, deallocate))) {
+            int ii;
+            for(ii = i-1; ii>=0; ii--) {
+                my_destroy_zend_op(dst->opcodes+ii, deallocate);
+            }
+            goto  cleanup;
+        }
+#ifdef ZEND_ENGINE_2
+/* This code breaks apc's rule#1 - cache what you compile */
+        if(APCG(fpstat)==0) {
+            if((zo->opcode == ZEND_INCLUDE_OR_EVAL) && 
+                (zo->op1.op_type == IS_CONST && zo->op1.u.constant.type == IS_STRING)) {
+                /* constant includes */
+                if(!IS_ABSOLUTE_PATH(Z_STRVAL_P(&zo->op1.u.constant),Z_STRLEN_P(&zo->op1.u.constant))) { 
+                    if (apc_search_paths(Z_STRVAL_P(&zo->op1.u.constant), PG(include_path), &fileinfo) == 0) {
+                        if((fullpath = realpath(fileinfo.fullpath, canon_path))) {
+                            /* everything has to go through a realpath() */
+                            zend_op *dzo = &(dst->opcodes[i]);
+                            deallocate(dzo->op1.u.constant.value.str.val);
+                            dzo->op1.u.constant.value.str.len = strlen(fullpath);
+                            dzo->op1.u.constant.value.str.val = apc_xstrdup(fullpath, allocate);
+                        }
+                    }
+                }
+            }
+        }
+#endif 
+    }
+
+#ifdef ZEND_ENGINE_2
+    if(flags == NULL || flags->has_jumps) {
+        apc_fixup_op_array_jumps(dst,src);
+    }
+#endif
+
+    /* copy the break-continue array */
+    if (src->brk_cont_array) {
+        if(!(dst->brk_cont_array =
+            apc_xmemcpy(src->brk_cont_array,
+                        sizeof(src->brk_cont_array[0]) * src->last_brk_cont,
+                        allocate))) {
+            goto cleanup_opcodes;
+        }
+    }
+
+    /* copy the table of static variables */
+    if (src->static_variables) {
+        if(!(dst->static_variables = my_copy_static_variables(src, allocate, deallocate))) {
+            goto cleanup_opcodes;
+        }
+    }
+    
+#ifdef ZEND_ENGINE_2
+    if (src->try_catch_array) {
+        if(!(dst->try_catch_array = 
+                apc_xmemcpy(src->try_catch_array,
+                        sizeof(src->try_catch_array[0]) * src->last_try_catch,
+                        allocate))) {
+            goto cleanup_opcodes;
+        }
+    }
+#endif
+
+#ifdef ZEND_ENGINE_2_1 /* PHP 5.1 */
+    if (src->vars) {
+        if(!(dst->vars = apc_xmemcpy(src->vars,
+                            sizeof(src->vars[0]) * src->last_var,
+                            allocate))) {
+            goto cleanup_opcodes;
+        }
+        
+        for(i = 0; i <  src->last_var; i++) dst->vars[i].name = NULL;
+        
+        for(i = 0; i <  src->last_var; i++) {
+            if(!(dst->vars[i].name = apc_xmemcpy(src->vars[i].name,
+                                src->vars[i].name_len + 1,
+                                allocate))) {
+                dst->last_var = i;
+                goto cleanup_opcodes;
+            }
+        }
+    }
+#endif
+
+#ifdef ZEND_ENGINE_2
+    if (src->doc_comment) {
+        if (!(dst->doc_comment 
+                = apc_xmemcpy(src->doc_comment, src->doc_comment_len+1, allocate))) {
+            goto cleanup_opcodes;
+        }
+    }
+#endif
+
+    return dst;
+
+cleanup_opcodes:
+    if(dst->opcodes) {
+        for(i=0; i < src->last; i++) my_destroy_zend_op(dst->opcodes+i, deallocate);
+    }
+cleanup:
+    if(dst->function_name) deallocate(dst->function_name);
+    if(dst->refcount) deallocate(dst->refcount);
+    if(dst->filename) deallocate(dst->filename);
+#ifdef ZEND_ENGINE_2
+    if(dst->arg_info) my_free_arg_info_array(dst->arg_info, dst->num_args, deallocate);
+    if(dst->try_catch_array) deallocate(dst->try_catch_array);
+    if(dst->doc_comment) deallocate(dst->doc_comment);
+#else
+    if(dst->arg_types) deallocate(dst->arg_types);
+#endif
+    if(dst->opcodes) deallocate(dst->opcodes);
+    if(dst->brk_cont_array) deallocate(dst->brk_cont_array);
+    if(dst->static_variables) my_free_hashtable(dst->static_variables, (ht_free_fun_t)my_free_zval_ptr, (apc_free_t)deallocate);
+#ifdef ZEND_ENGINE_2_1
+    if (dst->vars) {
+       for(i=0; i < dst->last_var; i++) {
+            if(dst->vars[i].name) deallocate(dst->vars[i].name);    
+        }
+        deallocate(dst->vars);
+    }
+#endif
+    if(local_dst_alloc) deallocate(dst);
+    return NULL;
+}
+/* }}} */
+
+/* {{{ apc_copy_new_functions */
+apc_function_t* apc_copy_new_functions(int old_count, apc_malloc_t allocate, apc_free_t deallocate TSRMLS_DC)
+{
+    apc_function_t* array;
+    int new_count;              /* number of new functions in table */
+    int i;
+
+    new_count = zend_hash_num_elements(CG(function_table)) - old_count;
+    assert(new_count >= 0);
+
+    CHECK(array =
+        (apc_function_t*)
+            allocate(sizeof(apc_function_t) * (new_count+1)));
+
+    if (new_count == 0) {
+        array[0].function = NULL;
+        return array;
+    }
+    
+    /* Skip the first `old_count` functions in the table */
+    zend_hash_internal_pointer_reset(CG(function_table));
+    for (i = 0; i < old_count; i++) {
+        zend_hash_move_forward(CG(function_table));
+    }
+
+    /* Add the next `new_count` functions to our array */
+    for (i = 0; i < new_count; i++) {
+        char* key;
+        uint key_size;
+        zend_function* fun;
+
+        zend_hash_get_current_key_ex(CG(function_table),
+                                     &key,
+                                     &key_size,
+                                     NULL,
+                                     0,
+                                     NULL);
+
+        zend_hash_get_current_data(CG(function_table), (void**) &fun);
+
+        if(!(array[i].name = apc_xmemcpy(key, (int) key_size, allocate))) {
+            int ii;
+            for(ii=i-1; ii>=0; ii--) {
+                deallocate(array[ii].name);
+                my_free_function(array[ii].function, deallocate);
+            }
+            deallocate(array);
+            return NULL;
+        }
+        array[i].name_len = (int) key_size-1;
+        if(!(array[i].function = my_copy_function(NULL, fun, allocate, deallocate))) {
+            int ii;
+            deallocate(array[i].name);
+            for(ii=i-1; ii>=0; ii--) {
+                deallocate(array[ii].name);
+                my_free_function(array[ii].function, deallocate);
+            }
+            deallocate(array);
+            return NULL;
+        }
+        zend_hash_move_forward(CG(function_table));
+    }
+
+    array[i].function = NULL;
+    return array;
+}
+/* }}} */
+
+/* {{{ apc_copy_new_classes */
+apc_class_t* apc_copy_new_classes(zend_op_array* op_array, int old_count, apc_malloc_t allocate, apc_free_t deallocate TSRMLS_DC)
+{
+    apc_class_t* array;
+    int new_count;              /* number of new classes in table */
+    int i;
+    
+    new_count = zend_hash_num_elements(CG(class_table)) - old_count;
+    assert(new_count >= 0);
+
+    CHECK(array =
+        (apc_class_t*)
+            allocate(sizeof(apc_class_t)*(new_count+1)));
+    
+    if (new_count == 0) {
+        array[0].class_entry = NULL;
+        return array;
+    }
+
+    /* Skip the first `old_count` classes in the table */
+    zend_hash_internal_pointer_reset(CG(class_table));
+    for (i = 0; i < old_count; i++) {
+        zend_hash_move_forward(CG(class_table));
+    }
+
+    /* Add the next `new_count` classes to our array */
+    for (i = 0; i < new_count; i++) {
+        char* key;
+        uint key_size;
+        zend_class_entry* elem = NULL;
+
+        array[i].class_entry = NULL;
+
+        zend_hash_get_current_key_ex(CG(class_table),
+                                     &key,
+                                     &key_size,
+                                     NULL,
+                                     0,
+                                     NULL);
+
+       zend_hash_get_current_data(CG(class_table), (void**) &elem);
+  
+        
+#ifdef ZEND_ENGINE_2
+               elem = *((zend_class_entry**)elem);
+#endif
+        
+        if(!(array[i].name = apc_xmemcpy(key, (int) key_size, allocate))) {
+            int ii;
+
+            for(ii=i-1; ii>=0; ii--) {
+                deallocate(array[ii].name);
+                my_destroy_class_entry(array[ii].class_entry, deallocate);
+                deallocate(array[ii].class_entry);
+            }
+            deallocate(array);
+            return NULL;
+        }
+        array[i].name_len = (int) key_size-1;
+        if(!(array[i].class_entry = my_copy_class_entry(NULL, elem, allocate, deallocate))) {
+            int ii;
+            
+            deallocate(array[i].name);
+            for(ii=i-1; ii>=0; ii--) {
+                deallocate(array[ii].name);
+                my_destroy_class_entry(array[ii].class_entry, deallocate);
+                deallocate(array[ii].class_entry);
+            }
+            deallocate(array);
+            return NULL;
+        }
+
+        /*
+         * If the class has a pointer to its parent class, save the parent
+         * name so that we can enable compile-time inheritance when we reload
+         * the child class; otherwise, set the parent name to null and scan
+         * the op_array to determine if this class inherits from some base
+         * class at execution-time.
+         */
+
+        if (elem->parent) {
+            if(!(array[i].parent_name =
+                apc_xstrdup(elem->parent->name, allocate))) {
+                int ii;
+                 
+                for(ii=i; ii>=0; ii--) {
+                    deallocate(array[ii].name);
+                    my_destroy_class_entry(array[ii].class_entry, deallocate);
+                    deallocate(array[ii].class_entry);
+                    if(ii==i) continue;
+                    if(array[ii].parent_name) deallocate(array[ii].parent_name);
+                }
+                deallocate(array);
+                return NULL;
+            }
+            array[i].is_derived = 1;
+        }
+        else {
+            array[i].parent_name = NULL;
+            array[i].is_derived = is_derived_class(op_array, key, key_size);
+        }
+
+        zend_hash_move_forward(CG(class_table));
+    }
+
+    array[i].class_entry = NULL;
+    return array;
+}
+/* }}} */
+
+/* {{{ my_destroy_zval_ptr */
+static void my_destroy_zval_ptr(zval** src, apc_free_t deallocate)
+{
+    assert(src != NULL);
+    if(my_destroy_zval(src[0], deallocate) == SUCCESS) {
+        deallocate(src[0]);
+    }
+}
+/* }}} */
+
+/* {{{ my_destroy_zval */
+static int my_destroy_zval(zval* src, apc_free_t deallocate)
+{
+    zval **tmp;
+    TSRMLS_FETCH();
+
+    switch (src->type & ~IS_CONSTANT_INDEX) {
+    case IS_RESOURCE:
+    case IS_BOOL:
+    case IS_LONG:
+    case IS_DOUBLE:
+    case IS_NULL:
+        break;
+
+    case IS_CONSTANT:
+    case IS_STRING:
+#ifndef ZEND_ENGINE_2        
+    case FLAG_IS_BC:
+#endif        
+        deallocate(src->value.str.val);
+        break;
+    
+    case IS_ARRAY:
+    
+        /* Maintain a list of zvals we've copied to properly handle recursive structures */
+        if(APCG(copied_zvals)) {
+            if(zend_hash_index_find(APCG(copied_zvals), (ulong)src, (void**)&tmp) == SUCCESS) {
+                (*tmp)->refcount--;
+                return FAILURE;
+            } 
+            zend_hash_index_update(APCG(copied_zvals), (ulong)src, (void**)&src, sizeof(zval*), NULL);
+        }
+        /* fall through */
+
+    case IS_CONSTANT_ARRAY:
+        my_free_hashtable(src->value.ht,
+                          (ht_free_fun_t) my_free_zval_ptr,
+                          deallocate);
+        break;
+
+    case IS_OBJECT:
+#ifndef ZEND_ENGINE_2        
+        my_destroy_class_entry(src->value.obj.ce, deallocate);
+        deallocate(src->value.obj.ce);
+        my_free_hashtable(src->value.obj.properties,
+                          (ht_free_fun_t) my_free_zval_ptr,
+                          deallocate);
+#endif        
+        break;
+
+    default:
+        assert(0);
+    }
+
+    return SUCCESS;
+}
+/* }}} */
+
+/* {{{ my_destroy_znode */
+static void my_destroy_znode(znode* src, apc_free_t deallocate)
+{
+    if (src->op_type == IS_CONST) {
+        my_destroy_zval(&src->u.constant, deallocate);
+    }
+}
+/* }}} */
+
+/* {{{ my_destroy_zend_op */
+static void my_destroy_zend_op(zend_op* src, apc_free_t deallocate)
+{
+    my_destroy_znode(&src->result, deallocate);
+    my_destroy_znode(&src->op1, deallocate);
+    my_destroy_znode(&src->op2, deallocate);
+}
+/* }}} */
+
+/* {{{ my_destroy_function */
+static void my_destroy_function(zend_function* src, apc_free_t deallocate)
+{
+    assert(src != NULL);
+
+    switch (src->type) {
+    case ZEND_INTERNAL_FUNCTION:
+    case ZEND_OVERLOADED_FUNCTION:
+        break;
+        
+    case ZEND_USER_FUNCTION:
+    case ZEND_EVAL_CODE:
+        my_destroy_op_array(&src->op_array, deallocate);
+        break;
+
+    default:
+        assert(0);
+    }
+}
+/* }}} */
+
+/* {{{ my_destroy_function_entry */
+static void my_destroy_function_entry(zend_function_entry* src, apc_free_t deallocate)
+{
+    assert(src != NULL);
+
+    deallocate(src->fname);
+#ifdef ZEND_ENGINE_2    
+    if (src->arg_info) {
+            my_free_arg_info_array(src->arg_info, src->num_args, deallocate);
+    }
+#else
+    if (src->func_arg_types) {
+        deallocate(src->func_arg_types);
+    }
+#endif    
+}
+/* }}} */
+
+#ifdef ZEND_ENGINE_2    
+/* {{{ my_destroy_property_info*/
+static void my_destroy_property_info(zend_property_info* src, apc_free_t deallocate)
+{
+    assert(src != NULL);
+
+    deallocate(src->name);
+#if defined(ZEND_ENGINE_2) && PHP_MINOR_VERSION > 0
+    if(src->doc_comment) deallocate(src->doc_comment);
+#endif
+}
+/* }}} */
+
+/* {{{ my_destroy_arg_info_array */
+static void my_destroy_arg_info_array(zend_arg_info* src, uint num_args, apc_free_t deallocate)
+{
+    int i = 0;
+    
+    assert(src != NULL);
+
+    for(i=0; i < num_args; i++) {
+        my_destroy_arg_info(&src[i], deallocate);
+    }
+}
+/* }}} */
+
+/* {{{ my_destroy_arg_info */
+static void my_destroy_arg_info(zend_arg_info* src, apc_free_t deallocate)
+{
+    assert(src != NULL);
+
+    deallocate(src->name);
+    deallocate(src->class_name);
+}
+/* }}} */
+#endif    
+
+/* {{{ my_destroy_class_entry */
+static void my_destroy_class_entry(zend_class_entry* src, apc_free_t deallocate)
+{
+    uint i;
+
+    assert(src != NULL);
+
+    deallocate(src->name);
+#ifndef ZEND_ENGINE_2    
+    deallocate(src->refcount);
+#else
+    if(src->doc_comment) deallocate(src->doc_comment);
+    if(src->filename) deallocate(src->filename);
+#endif
+
+    my_destroy_hashtable(&src->function_table,
+                         (ht_free_fun_t) my_free_function,
+                         deallocate);
+
+    my_destroy_hashtable(&src->default_properties,
+                         (ht_free_fun_t) my_free_zval_ptr,
+                         deallocate);
+
+#ifdef ZEND_ENGINE_2
+    my_destroy_hashtable(&src->properties_info, 
+                            (ht_free_fun_t) my_free_property_info,
+                            deallocate);
+    if(src->static_members) 
+    {
+        my_destroy_hashtable(src->static_members,
+                         (ht_free_fun_t) my_free_zval_ptr,
+                         deallocate);
+        if(src->static_members != &(src->default_static_members))
+        {
+            deallocate(src->static_members);
+        }
+    }
+
+    my_destroy_hashtable(&src->constants_table, 
+                            (ht_free_fun_t) my_free_zval_ptr,
+                            deallocate);
+#endif
+
+    if (src->builtin_functions) {
+        for (i = 0; src->builtin_functions[i].fname != NULL; i++) {
+            my_destroy_function_entry(&src->builtin_functions[i], deallocate);
+        }
+        deallocate(src->builtin_functions);
+    }
+}
+/* }}} */
+
+/* {{{ my_destroy_hashtable */
+static void my_destroy_hashtable(HashTable* src, ht_free_fun_t free_fn, apc_free_t deallocate)
+{
+    int i;
+
+    assert(src != NULL);
+
+    for (i = 0; i < src->nTableSize; i++) {
+        Bucket* p = src->arBuckets[i];
+        while (p != NULL) {
+            Bucket* q = p;
+            p = p->pNext;
+            free_fn(q->pData, deallocate);
+            deallocate(q);
+        }
+    }
+
+    deallocate(src->arBuckets);
+}
+/* }}} */
+
+/* {{{ my_destroy_op_array */
+static void my_destroy_op_array(zend_op_array* src, apc_free_t deallocate)
+{
+    int i;
+
+    assert(src != NULL);
+
+#ifdef ZEND_ENGINE_2
+    if (src->arg_info) {
+        my_free_arg_info_array(src->arg_info, src->num_args, deallocate);
+    }
+#else    
+    if (src->arg_types) {
+        deallocate(src->arg_types);
+    }
+#endif
+
+    deallocate(src->function_name);
+    deallocate(src->filename);
+    deallocate(src->refcount);
+
+    for (i = 0; i < src->last; i++) {
+        my_destroy_zend_op(src->opcodes + i, deallocate);
+    }
+    deallocate(src->opcodes);
+
+    if (src->brk_cont_array) {
+        deallocate(src->brk_cont_array);
+    }
+
+    if (src->static_variables) {
+        my_free_hashtable(src->static_variables,
+                          (ht_free_fun_t) my_free_zval_ptr,
+                          deallocate);
+    }
+    
+#ifdef ZEND_ENGINE_2_1
+    if (src->vars) {
+       for(i=0; i < src->last_var; i++) {
+            if(src->vars[i].name) deallocate(src->vars[i].name);    
+        }
+        deallocate(src->vars);
+    }
+#endif
+#ifdef ZEND_ENGINE_2
+    if(src->try_catch_array) {
+        deallocate(src->try_catch_array);
+    }
+    if (src->doc_comment) {
+        deallocate(src->doc_comment);
+    }
+#endif
+}
+/* }}} */
+
+/* {{{ my_free_zval_ptr */
+static void my_free_zval_ptr(zval** src, apc_free_t deallocate)
+{
+    my_destroy_zval_ptr(src, deallocate);
+    deallocate(src);
+}
+/* }}} */
+
+#ifdef ZEND_ENGINE_2
+/* {{{ my_free_property_info */
+static void my_free_property_info(zend_property_info* src, apc_free_t deallocate)
+{
+    my_destroy_property_info(src, deallocate);
+    deallocate(src);
+}
+/* }}} */
+
+/* {{{ my_free_arg_info_array */
+static void my_free_arg_info_array(zend_arg_info* src, uint num_args, apc_free_t deallocate)
+{
+    my_destroy_arg_info_array(src, num_args, deallocate);
+    deallocate(src);
+}
+/* }}} */
+
+/* {{{ my_free_arg_info */
+static void my_free_arg_info(zend_arg_info* src, apc_free_t deallocate)
+{
+    my_destroy_arg_info(src, deallocate);
+    deallocate(src);
+}
+/* }}} */
+#endif
+
+/* {{{ my_free_function */
+static void my_free_function(zend_function* src, apc_free_t deallocate)
+{
+    my_destroy_function(src, deallocate);
+    deallocate(src);
+}
+/* }}} */
+
+/* {{{ my_free_hashtable */
+static void my_free_hashtable(HashTable* src, ht_free_fun_t free_fn, apc_free_t deallocate)
+{
+    my_destroy_hashtable(src, free_fn, deallocate);
+    deallocate(src);
+}
+/* }}} */
+
+/* {{{ apc_free_op_array */
+void apc_free_op_array(zend_op_array* src, apc_free_t deallocate)
+{
+    if (src != NULL) {
+        my_destroy_op_array(src, deallocate);
+        deallocate(src);
+    }
+}
+/* }}} */
+
+/* {{{ apc_free_functions */
+void apc_free_functions(apc_function_t* src, apc_free_t deallocate)
+{
+    int i;
+
+    if (src != NULL) {
+        for (i = 0; src[i].function != NULL; i++) {
+            deallocate(src[i].name);
+            my_destroy_function(src[i].function, deallocate);
+            deallocate(src[i].function);
+        }   
+        deallocate(src);
+    }   
+}
+/* }}} */
+
+/* {{{ apc_free_classes */
+void apc_free_classes(apc_class_t* src, apc_free_t deallocate)
+{
+    int i;
+
+    if (src != NULL) {
+        for (i = 0; src[i].class_entry != NULL; i++) {
+            deallocate(src[i].name);
+            deallocate(src[i].parent_name);
+            my_destroy_class_entry(src[i].class_entry, deallocate);
+            deallocate(src[i].class_entry);
+        }   
+        deallocate(src);
+    }   
+}
+/* }}} */
+
+/* {{{ apc_free_zval */
+void apc_free_zval(zval* src, apc_free_t deallocate)
+{
+    if (src != NULL) {
+        if(my_destroy_zval(src, deallocate) == SUCCESS) {
+            deallocate(src);
+        }
+    }
+}
+/* }}} */
+
+
+/* Used only by my_prepare_op_array_for_execution */
+#define APC_PREPARE_FETCH_GLOBAL_FOR_EXECUTION()                                                \
+                         /* The fetch is only required if auto_globals_jit=1  */                \
+                        if(zo->op2.u.EA.type == ZEND_FETCH_GLOBAL &&                            \
+                            zo->op1.op_type == IS_CONST &&                                      \
+                            zo->op1.u.constant.type == IS_STRING &&                             \
+                            zo->op1.u.constant.value.str.val[0] == '_') {                       \
+                                                                                                \
+                            znode* varname = &zo->op1;                                          \
+                            (void)zend_is_auto_global(varname->u.constant.value.str.val,        \
+                                                          varname->u.constant.value.str.len     \
+                                                          TSRMLS_CC);                           \
+                        }                                                                       \
+
+/* {{{ my_prepare_op_array_for_execution */
+static int my_prepare_op_array_for_execution(zend_op_array* dst, zend_op_array* src TSRMLS_DC) 
+{
+    /* combine my_fetch_global_vars and my_copy_data_exceptions.
+     *   - Pre-fetch superglobals which would've been pre-fetched in parse phase.
+     *   - If the opcode stream contain mutable data, ensure a copy.
+     *   - Fixup array jumps in the same loop.
+     */
+    int i=src->last;
+    zend_op *zo;
+    zend_op *dzo;
+#ifdef ZEND_ENGINE_2
+    apc_opflags_t * flags = APCG(reserved_offset) != -1 ? 
+                                (apc_opflags_t*) & (src->reserved[APCG(reserved_offset)]) : NULL;
+    int needcopy = flags ? flags->deep_copy : 1;
+    /* auto_globals_jit was not in php4 */
+    int do_prepare_fetch_global = PG(auto_globals_jit) && (flags == NULL || flags->unknown_global);
+
+#define FETCH_AUTOGLOBAL(member) do { \
+    if(flags && flags->member == 1) { \
+        zend_is_auto_global(#member,\
+                            (sizeof(#member) - 1)\
+                            TSRMLS_CC);\
+    } \
+}while(0); 
+            
+    FETCH_AUTOGLOBAL(_GET);
+    FETCH_AUTOGLOBAL(_POST);
+    FETCH_AUTOGLOBAL(_COOKIE);
+    FETCH_AUTOGLOBAL(_SERVER);
+    FETCH_AUTOGLOBAL(_ENV);
+    FETCH_AUTOGLOBAL(_FILES);
+    FETCH_AUTOGLOBAL(_REQUEST);
+
+#else
+    int needcopy = 0;
+    int do_prepare_fetch_global = 0;
+    int j = 0;
+
+    for(j = 0; j < src->last; j++) {
+        zo = &src->opcodes[j];
+        
+        if( ((zo->op1.op_type == IS_CONST &&
+              zo->op1.u.constant.type == IS_CONSTANT_ARRAY)) ||  
+            ((zo->op2.op_type == IS_CONST &&
+              zo->op2.u.constant.type == IS_CONSTANT_ARRAY))) {
+            needcopy = 1;
+        }
+    }
+#endif
+    
+    if(needcopy) {
+
+        dst->opcodes = (zend_op*) apc_xmemcpy(src->opcodes, 
+                                    sizeof(zend_op) * src->last,
+                                    apc_php_malloc);
+        zo = src->opcodes;
+        dzo = dst->opcodes;
+        while(i > 0) {
+
+            if( ((zo->op1.op_type == IS_CONST &&
+                  zo->op1.u.constant.type == IS_CONSTANT_ARRAY)) ||  
+                ((zo->op2.op_type == IS_CONST &&
+                  zo->op2.u.constant.type == IS_CONSTANT_ARRAY))) {
+
+                if(!(my_copy_zend_op(dzo, zo, apc_php_malloc, apc_php_free))) {
+                    assert(0); /* emalloc failed or a bad constant array */
+                }
+            }
+            
+#ifdef ZEND_ENGINE_2
+            switch(zo->opcode) {
+                case ZEND_JMP:
+                    dzo->op1.u.jmp_addr = dst->opcodes + 
+                                            (zo->op1.u.jmp_addr - src->opcodes);
+                    break;
+                case ZEND_JMPZ:
+                case ZEND_JMPNZ:
+                case ZEND_JMPZ_EX:
+                case ZEND_JMPNZ_EX:
+                    dzo->op2.u.jmp_addr = dst->opcodes + 
+                                            (zo->op2.u.jmp_addr - src->opcodes);
+                    break;
+                case ZEND_FETCH_R:
+                case ZEND_FETCH_W:
+                case ZEND_FETCH_IS:
+                case ZEND_FETCH_FUNC_ARG:
+                    if(do_prepare_fetch_global)
+                    {
+                        APC_PREPARE_FETCH_GLOBAL_FOR_EXECUTION();
+                    }
+                    break;
+                default:
+                    break;
+            }
+#endif
+            i--;
+            zo++;
+            dzo++;
+        }
+#ifdef ZEND_ENGINE_2
+    } else {  /* !needcopy */
+        /* The fetch is only required if auto_globals_jit=1  */
+        if(do_prepare_fetch_global)
+        {
+            zo = src->opcodes;
+            while(i > 0) {
+
+                if(zo->opcode == ZEND_FETCH_R || 
+                   zo->opcode == ZEND_FETCH_W ||
+                   zo->opcode == ZEND_FETCH_IS ||
+                   zo->opcode == ZEND_FETCH_FUNC_ARG 
+                  ) {
+                    APC_PREPARE_FETCH_GLOBAL_FOR_EXECUTION();
+                }
+
+                i--;
+                zo++;
+            }
+        }
+#endif
+    }
+    return 1;
+}
+/* }}} */
+
+/* {{{ apc_copy_op_array_for_execution */
+zend_op_array* apc_copy_op_array_for_execution(zend_op_array* dst, zend_op_array* src TSRMLS_DC)
+{
+    if(dst == NULL) {
+        dst = (zend_op_array*) emalloc(sizeof(src[0]));
+    }
+    memcpy(dst, src, sizeof(src[0]));
+    dst->static_variables = my_copy_static_variables(src, apc_php_malloc, apc_php_free);
+
+    dst->refcount = apc_xmemcpy(src->refcount,
+                                      sizeof(src->refcount[0]),
+                                      apc_php_malloc);
+    
+    my_prepare_op_array_for_execution(dst,src TSRMLS_CC);
+
+    return dst;
+}
+/* }}} */
+
+/* {{{ apc_copy_function_for_execution */
+zend_function* apc_copy_function_for_execution(zend_function* src)
+{
+    zend_function* dst;
+    TSRMLS_FETCH();
+
+    dst = (zend_function*) emalloc(sizeof(src[0]));
+    memcpy(dst, src, sizeof(src[0]));
+    apc_copy_op_array_for_execution(&(dst->op_array), &(src->op_array) TSRMLS_CC);
+    return dst;
+}
+/* }}} */
+
+/* {{{ apc_copy_function_for_execution_ex */
+zend_function* apc_copy_function_for_execution_ex(void *dummy, zend_function* src, apc_malloc_t allocate, apc_free_t deallocate)
+{
+    if(src->type==ZEND_INTERNAL_FUNCTION || src->type==ZEND_OVERLOADED_FUNCTION) return src;
+    return apc_copy_function_for_execution(src);
+}
+/* }}} */
+
+/* {{{ apc_copy_class_entry_for_execution */
+zend_class_entry* apc_copy_class_entry_for_execution(zend_class_entry* src, int is_derived)
+{
+    zend_class_entry* dst = (zend_class_entry*) emalloc(sizeof(src[0]));
+    memcpy(dst, src, sizeof(src[0]));
+
+#ifdef ZEND_ENGINE_2
+    if(src->num_interfaces)
+    {
+        /* These are slots to be populated later by ADD_INTERFACE insns */
+        dst->interfaces = apc_php_malloc(
+                            sizeof(zend_class_entry*) * src->num_interfaces);
+        memset(dst->interfaces, 0, 
+                            sizeof(zend_class_entry*) * src->num_interfaces);
+    }
+    else
+    {
+        /* assert(dst->interfaces == NULL); */
+    }
+#endif
+
+#ifndef ZEND_ENGINE_2    
+    dst->refcount = apc_xmemcpy(src->refcount,
+                                      sizeof(src->refcount[0]),
+                                      apc_php_malloc);
+#endif        
+
+    /* Deep-copy the class properties, because they will be modified */
+
+    my_copy_hashtable(&dst->default_properties,
+                      &src->default_properties,
+                      (ht_copy_fun_t) my_copy_zval_ptr,
+                      (ht_free_fun_t) my_free_zval_ptr,
+                      1,
+                      apc_php_malloc, apc_php_free);
+
+    /* For derived classes, we must also copy the function hashtable (although
+     * we can merely bitwise copy the functions it contains) */
+
+    my_copy_hashtable(&dst->function_table,
+                      &src->function_table,
+                      (ht_copy_fun_t) apc_copy_function_for_execution_ex,
+                      NULL,
+                      0,
+                      apc_php_malloc, apc_php_free);
+#ifdef ZEND_ENGINE_2
+    my_fixup_hashtable(&dst->function_table, (ht_fixup_fun_t)my_fixup_function_for_execution, src, dst);
+
+    /* zend_do_inheritance merges properties_info.
+     * Need only shallow copying as it doesn't hold the pointers.
+     */
+    my_copy_hashtable(&dst->properties_info,
+                      &src->properties_info,
+                      (ht_copy_fun_t) my_copy_property_info_for_execution,
+                      NULL,
+                      0,
+                      apc_php_malloc, apc_php_free);
+
+#ifdef ZEND_ENGINE_2_2
+    /* php5.2 introduced a scope attribute for property info */
+    my_fixup_hashtable(&dst->properties_info, (ht_fixup_fun_t)my_fixup_property_info_for_execution, src, dst);
+#endif
+
+    /* if inheritance results in a hash_del, it might result in
+     * a pefree() of the pointers here. Deep copying required. 
+     */
+
+    my_copy_hashtable(&dst->constants_table,
+                      &src->constants_table,
+                      (ht_copy_fun_t) my_copy_zval_ptr,
+                      NULL,
+                      1,
+                      apc_php_malloc, apc_php_free);
+
+    my_copy_hashtable(&dst->default_static_members,
+                      &src->default_static_members,
+                      (ht_copy_fun_t) my_copy_zval_ptr,
+                      (ht_free_fun_t) my_free_zval_ptr,
+                      1,
+                      apc_php_malloc, apc_php_free);
+
+    if(src->static_members != &(src->default_static_members))
+    {
+        dst->static_members = my_copy_hashtable(NULL,
+                          src->static_members,
+                          (ht_copy_fun_t) my_copy_zval_ptr,
+                          (ht_free_fun_t) my_free_zval_ptr,
+                          1,
+                          apc_php_malloc, apc_php_free);
+    }
+    else 
+    {
+        dst->static_members = &(dst->default_static_members);
+    }
+
+#endif
+
+    return dst;
+}
+/* }}} */
+
+/* {{{ apc_free_class_entry_after_execution */
+void apc_free_class_entry_after_execution(zend_class_entry* src)
+{
+#ifdef ZEND_ENGINE_2
+    if(src->num_interfaces > 0 && src->interfaces) {
+        apc_php_free(src->interfaces);
+        src->interfaces = NULL;
+        src->num_interfaces = 0;
+    }
+    /* my_destroy_hashtable() does not play nice with refcounts */
+
+    zend_hash_clean(&src->default_static_members);
+    if(src->static_members != &(src->default_static_members))
+    {
+        zend_hash_destroy(src->static_members);
+        apc_php_free(src->static_members);
+        src->static_members = NULL;
+    }
+    else
+    {
+        src->static_members = NULL;
+    }
+    zend_hash_clean(&src->default_properties);
+    zend_hash_clean(&src->constants_table);
+#endif
+
+    /* TODO: more cleanup */
+}
+/* }}} */
+
+#ifdef ZEND_ENGINE_2
+
+/* {{{ my_fixup_function */
+static void my_fixup_function(Bucket *p, zend_class_entry *src, zend_class_entry *dst)
+{
+    zend_function* zf = p->pData;
+
+    #define SET_IF_SAME_NAME(member) \
+    do { \
+        if(src->member && !strcmp(zf->common.function_name, src->member->common.function_name)) { \
+            dst->member = zf; \
+        } \
+    } \
+    while(0)
+
+    if(zf->common.scope == src)
+    {
+    
+        /* Fixing up the default functions for objects here since
+         * we need to compare with the newly allocated functions
+         *
+         * caveat: a sub-class method can have the same name as the
+         * parent's constructor and create problems.
+         */
+        
+        if(zf->common.fn_flags & ZEND_ACC_CTOR) dst->constructor = zf;
+        else if(zf->common.fn_flags & ZEND_ACC_DTOR) dst->destructor = zf;
+        else if(zf->common.fn_flags & ZEND_ACC_CLONE) dst->clone = zf;
+        else
+        {
+            SET_IF_SAME_NAME(__get);
+            SET_IF_SAME_NAME(__set);
+            SET_IF_SAME_NAME(__unset);
+            SET_IF_SAME_NAME(__isset);
+            SET_IF_SAME_NAME(__call);
+#ifdef ZEND_ENGINE_2_2
+            SET_IF_SAME_NAME(__tostring);
+#endif
+        }
+        zf->common.scope = dst;
+    }
+    else
+    {
+        /* no other function should reach here */
+        assert(0);
+    }
+
+    #undef SET_IF_SAME_NAME
+}
+/* }}} */
+
+#ifdef ZEND_ENGINE_2_2
+/* {{{ my_fixup_property_info */
+static void my_fixup_property_info(Bucket *p, zend_class_entry *src, zend_class_entry *dst)
+{
+    zend_property_info* property_info = (zend_property_info*)p->pData;
+
+    if(property_info->ce == src)
+    {
+        property_info->ce = dst;
+    }
+    else
+    {
+        assert(0); /* should never happen */
+    }
+}
+/* }}} */
+#endif
+
+/* {{{ my_fixup_hashtable */
+static void my_fixup_hashtable(HashTable *ht, ht_fixup_fun_t fixup, zend_class_entry *src, zend_class_entry *dst)
+{
+    Bucket *p;
+    
+       uint i;
+    
+       for (i = 0; i < ht->nTableSize; i++) {
+               if(!ht->arBuckets) break;
+        p = ht->arBuckets[i];
+               while (p != NULL) {
+            fixup(p, src, dst);
+                       p = p->pNext;
+               }
+       }
+}
+/* }}} */
+
+#endif
+
+/* {{{ my_check_copy_function */
+static int my_check_copy_function(Bucket* p, va_list args)
+{
+    zend_class_entry* src = va_arg(args, zend_class_entry*);
+    zend_function* zf = (zend_function*)p->pData;
+#ifndef ZEND_ENGINE_2
+    zend_class_entry* parent = src->parent;
+    zend_function* parent_fn = NULL;
+#endif
+
+#ifdef ZEND_ENGINE_2
+    return (zf->common.scope == src);
+#else
+       if (parent &&
+        zend_hash_quick_find(&parent->function_table, p->arKey, 
+            p->nKeyLength, p->h, (void **) &parent_fn)==SUCCESS) {
+        
+        if((parent_fn && zf) && 
+                (parent_fn->op_array.refcount == zf->op_array.refcount))
+        {
+            return 0;
+        }
+    }
+    return 1;
+#endif 
+}
+/* }}} */
+
+/* {{{ my_check_copy_default_property */
+static int my_check_copy_default_property(Bucket* p, va_list args)
+{
+    zend_class_entry* src = va_arg(args, zend_class_entry*);
+    zend_class_entry* parent = src->parent;
+    zval ** child_prop = (zval**)p->pData;
+    zval ** parent_prop = NULL;
+
+       if (parent &&
+        zend_hash_quick_find(&parent->default_properties, p->arKey, 
+            p->nKeyLength, p->h, (void **) &parent_prop)==SUCCESS) {
+
+        if((parent_prop && child_prop) && (*parent_prop) == (*child_prop))
+        {
+            return 0;
+        }
+    }
+    
+    /* possibly not in the parent */
+    return 1;
+}
+/* }}} */
+
+#ifdef ZEND_ENGINE_2
+
+/* {{{ my_check_copy_property_info */
+static int my_check_copy_property_info(Bucket* p, va_list args)
+{
+    zend_class_entry* src = va_arg(args, zend_class_entry*);
+    zend_class_entry* parent = src->parent;
+    zend_property_info* child_info = (zend_property_info*)p->pData;
+    zend_property_info* parent_info = NULL;
+
+#ifdef ZEND_ENGINE_2_2
+    /* so much easier */
+    return (child_info->ce == src);
+#endif
+
+       if (parent &&
+        zend_hash_quick_find(&parent->properties_info, p->arKey, p->nKeyLength, 
+            p->h, (void **) &parent_info)==SUCCESS) {
+        if(parent_info->flags & ZEND_ACC_PRIVATE)
+        {
+            return 1;
+        }
+        if((parent_info->flags & ZEND_ACC_PPP_MASK) != 
+            (child_info->flags & ZEND_ACC_PPP_MASK))
+        {
+            /* TODO: figure out whether ACC_CHANGED is more appropriate
+             * here */
+            return 1;
+        }
+        return 0;
+    }
+    
+    /* property doesn't exist in parent, copy into cached child */
+    return 1;
+}
+/* }}} */
+
+/* {{{ my_check_copy_static_member */
+static int my_check_copy_static_member(Bucket* p, va_list args)
+{
+    zend_class_entry* src = va_arg(args, zend_class_entry*);
+    HashTable * ht = va_arg(args, HashTable*);
+    zend_class_entry* parent = src->parent;
+    HashTable * parent_ht = NULL;
+    char * member_name;
+    char * class_name = NULL;
+
+    zend_property_info *parent_info = NULL;
+    zend_property_info *child_info = NULL;
+    zval ** parent_prop = NULL;
+    zval ** child_prop = (zval**)(p->pData);
+
+    if(!parent) {
+        return 1;
+    }
+
+    /* these do not need free'ing */
+#ifdef ZEND_ENGINE_2_2
+    zend_unmangle_property_name(p->arKey, p->nKeyLength-1, &class_name, &member_name);
+#else
+    zend_unmangle_property_name(p->arKey, &class_name, &member_name);
+#endif
+
+    /* please refer do_inherit_property_access_check in zend_compile.c
+     * to understand why we lookup in properties_info.
+     */
+    if((zend_hash_find(&parent->properties_info, member_name, 
+                        strlen(member_name)+1, (void**)&parent_info) == SUCCESS)
+        &&
+        (zend_hash_find(&src->properties_info, member_name,
+                        strlen(member_name)+1, (void**)&child_info) == SUCCESS))
+    {
+        if(child_info->flags & ZEND_ACC_STATIC &&    
+            (parent_info->flags & ZEND_ACC_PROTECTED &&
+            child_info->flags & ZEND_ACC_PUBLIC))
+        {
+            /* Do not copy into static_members. zend_do_inheritance
+             * will automatically insert a NULL value.
+             * TODO: decrement refcount or fixup when copying out for exec ? 
+             */ 
+            return 0;
+        }
+        if(ht == &(src->default_static_members))
+        {
+            parent_ht = &parent->default_static_members;
+        }
+        else
+        {
+            parent_ht = parent->static_members;
+        }
+
+        if(zend_hash_quick_find(parent_ht, p->arKey,
+                       p->nKeyLength, p->h, (void**)&parent_prop) == SUCCESS)
+        {
+            /* they point to the same zval */
+            if(*parent_prop == *child_prop)
+            {
+                return 0;
+            }
+        }
+    }
+    
+    return 1;
+}
+/* }}} */
+#endif
+
+/* {{{ apc_register_optimizer(apc_optimize_function_t optimizer)
+ *      register a optimizer callback function, returns the previous callback
+ */
+apc_optimize_function_t apc_register_optimizer(apc_optimize_function_t optimizer TSRMLS_DC) {
+    apc_optimize_function_t old_optimizer = APCG(apc_optimize_function);
+    APCG(apc_optimize_function) = optimizer;
+    return old_optimizer;
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_compile.h php-5.2.5/ext/apc/apc_compile.h
--- php-5.2.5-orig/ext/apc/apc_compile.h        1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_compile.h     2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,134 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_compile.h,v 3.19 2007/03/08 22:03:35 gopalv Exp $ */
+
+#ifndef APC_COMPILE_H
+#define APC_COMPILE_H
+
+/*
+ * This module encapsulates most of the complexity involved in deep-copying
+ * the Zend compiler data structures. The routines are allocator-agnostic, so
+ * the same function can be used for copying to and from shared memory.
+ */
+
+#include "apc.h"
+#include "apc_php.h"
+
+/* {{{ struct definition: apc_function_t */
+typedef struct apc_function_t apc_function_t;
+struct apc_function_t {
+    char* name;                 /* the function name */
+    int name_len;               /* length of name */
+    zend_function* function;    /* the zend function data structure */
+};
+/* }}} */
+
+/* {{{ struct definition: apc_class_t */
+typedef struct apc_class_t apc_class_t;
+struct apc_class_t {
+    char* name;                     /* the class name */
+    int name_len;                   /* length of name */
+    int is_derived;                 /* true if this is a derived class */
+    char* parent_name;              /* the parent class name */
+    zend_class_entry* class_entry;  /* the zend class data structure */
+};
+/* }}} */
+
+/* {{{ struct definition: apc_opflags_t */
+typedef struct apc_opflags_t apc_opflags_t;
+struct apc_opflags_t {
+    unsigned int has_jumps      : 1; /* has jump offsets */
+    unsigned int deep_copy      : 1; /* needs deep copy */
+
+    /* autoglobal bits */
+    unsigned int _POST          : 1;
+    unsigned int _GET           : 1;
+    unsigned int _COOKIE        : 1;
+    unsigned int _SERVER        : 1;
+    unsigned int _ENV           : 1;
+    unsigned int _FILES         : 1;
+    unsigned int _REQUEST       : 1;
+    unsigned int unknown_global : 1;
+};
+/* }}} */
+
+/*
+ * These are the top-level copy functions.
+ */
+
+extern zend_op_array* apc_copy_op_array(zend_op_array* dst, zend_op_array* src, apc_malloc_t allocate, apc_free_t deallocate TSRMLS_DC);
+extern zend_class_entry* apc_copy_class_entry(zend_class_entry* dst, zend_class_entry* src, apc_malloc_t allocate, apc_free_t deallocate);
+extern apc_function_t* apc_copy_new_functions(int old_count, apc_malloc_t allocate, apc_free_t deallocate TSRMLS_DC);
+extern apc_class_t* apc_copy_new_classes(zend_op_array* op_array, int old_count, apc_malloc_t allocate, apc_free_t deallocate TSRMLS_DC);
+extern zval* apc_copy_zval(zval* dst, const zval* src, apc_malloc_t allocate, apc_free_t deallocate);
+
+/*
+ * Deallocation functions corresponding to the copy functions above.
+ */
+
+extern void apc_free_op_array(zend_op_array* src, apc_free_t deallocate);
+extern void apc_free_functions(apc_function_t* src, apc_free_t deallocate);
+extern void apc_free_classes(apc_class_t* src, apc_free_t deallocate);
+extern void apc_free_zval(zval* src, apc_free_t deallocate);
+
+/*
+ * These "copy-for-execution" functions must be called after retrieving an
+ * object from the shared cache. They do the minimal amount of work necessary
+ * to allow multiple processes to concurrently execute the same VM data
+ * structures.
+ */
+
+extern zend_op_array* apc_copy_op_array_for_execution(zend_op_array* dst, zend_op_array* src TSRMLS_DC);
+extern zend_function* apc_copy_function_for_execution(zend_function* src);
+extern zend_class_entry* apc_copy_class_entry_for_execution(zend_class_entry* src, int is_derived);
+
+/*
+ * The "free-after-execution" function performs a cursory clean up of the class data
+ * This is required to minimize memory leak warnings and to ensure correct destructor
+ * ordering of some variables.
+ */
+extern void apc_free_class_entry_after_execution(zend_class_entry* src);
+
+/*
+ * Optimization callback definition and registration function. 
+ */
+typedef zend_op_array* (*apc_optimize_function_t) (zend_op_array* TSRMLS_DC);
+extern apc_optimize_function_t apc_register_optimizer(apc_optimize_function_t optimizer TSRMLS_DC);
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_debug.c php-5.2.5/ext/apc/apc_debug.c
--- php-5.2.5-orig/ext/apc/apc_debug.c  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_debug.c       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,57 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+*/
+
+/* $Id: apc_debug.c,v 3.6 2006/12/07 23:51:28 gopalv Exp $ */
+#include "apc.h"
+#include <stdio.h>
+#include "zend_compile.h"
+
+#ifdef __DEBUG_APC__
+
+#include <dlfcn.h>
+
+/* keep track of vld_dump_oparray() signature */
+typedef void (*vld_dump_f) (zend_op_array * TSRMLS_DC);
+
+#endif
+
+void dump(zend_op_array *op_array TSRMLS_DC)
+{
+#ifdef __DEBUG_APC__
+       vld_dump_f dump_op_array = dlsym(NULL, "vld_dump_oparray");
+
+       if(dump_op_array)
+       {
+               dump_op_array(op_array TSRMLS_CC); 
+       }
+       else
+       {
+               apc_wprint("vld is not installed or something even worse.");
+       }
+#endif
+}
diff -ubrN php-5.2.5-orig/ext/apc/apc_debug.h php-5.2.5/ext/apc/apc_debug.h
--- php-5.2.5-orig/ext/apc/apc_debug.h  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_debug.h       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1 @@
+void dump(zend_op_array * TSRMLS_DC);
diff -ubrN php-5.2.5-orig/ext/apc/apc.dsp php-5.2.5/ext/apc/apc.dsp
--- php-5.2.5-orig/ext/apc/apc.dsp      1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc.dsp   2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,207 @@
+# Microsoft Developer Studio Project File - Name="apc" - Package Owner=<4>\r
+# Microsoft Developer Studio Generated Build File, Format Version 6.00\r
+# ** DO NOT EDIT **\r
+\r
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102\r
+\r
+CFG=apc - Win32 Debug_TS\r
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,\r
+!MESSAGE use the Export Makefile command and run\r
+!MESSAGE \r
+!MESSAGE NMAKE /f "apc.mak".\r
+!MESSAGE \r
+!MESSAGE You can specify a configuration when running NMAKE\r
+!MESSAGE by defining the macro CFG on the command line. For example:\r
+!MESSAGE \r
+!MESSAGE NMAKE /f "apc.mak" CFG="apc - Win32 Debug_TS"\r
+!MESSAGE \r
+!MESSAGE Possible choices for configuration are:\r
+!MESSAGE \r
+!MESSAGE "apc - Win32 Debug_TS" (based on "Win32 (x86) Dynamic-Link Library")\r
+!MESSAGE "apc - Win32 Release_TS" (based on "Win32 (x86) Dynamic-Link Library")\r
+!MESSAGE \r
+\r
+# Begin Project\r
+# PROP AllowPerConfigDependencies 0\r
+# PROP Scc_ProjName ""\r
+# PROP Scc_LocalPath ""\r
+CPP=cl.exe\r
+MTL=midl.exe\r
+RSC=rc.exe\r
+\r
+!IF  "$(CFG)" == "apc - Win32 Debug_TS"\r
+\r
+# PROP BASE Use_MFC 0\r
+# PROP BASE Use_Debug_Libraries 1\r
+# PROP BASE Output_Dir "Debug_TS"\r
+# PROP BASE Intermediate_Dir "Debug_TS"\r
+# PROP BASE Target_Dir ""\r
+# PROP Use_MFC 0\r
+# PROP Use_Debug_Libraries 1\r
+# PROP Output_Dir "Debug_TS"\r
+# PROP Intermediate_Dir "Debug_TS"\r
+# PROP Ignore_Export_Lib 0\r
+# PROP Target_Dir ""\r
+# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "APC_EXPORTS" /YX /FD /GZ /c\r
+# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "..\..\..\php4" /I "..\..\..\php4\main" /I "..\..\..\php4\Zend" /I "..\..\..\php4\TSRM" /I "..\..\..\php4\win32" /I "..\..\..\php4\regex" /D "TSRM_LOCKS" /D HAVE_APC=1 /D "COMPILE_DL_APC" /D ZEND_DEBUG=1 /D ZTS=1 /D "ZEND_WIN32" /D "PHP_WIN32" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "APC_EXPORTS" /YX /FD /GZ /c\r
+# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32\r
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32\r
+# ADD BASE RSC /l 0x409 /d "_DEBUG"\r
+# ADD RSC /l 0x409 /d "_DEBUG"\r
+BSC32=bscmake.exe\r
+# ADD BASE BSC32 /nologo\r
+# ADD BSC32 /nologo\r
+LINK32=link.exe\r
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /pdbtype:sept\r
+# ADD LINK32 php4ts_debug.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /out:"Debug_TS/php_apc.dll" /pdbtype:sept /libpath:"..\..\..\php4\Debug_TS"\r
+\r
+!ELSEIF  "$(CFG)" == "apc - Win32 Release_TS"\r
+\r
+# PROP BASE Use_MFC 0\r
+# PROP BASE Use_Debug_Libraries 0\r
+# PROP BASE Output_Dir "Release_TS"\r
+# PROP BASE Intermediate_Dir "Release_TS"\r
+# PROP BASE Target_Dir ""\r
+# PROP Use_MFC 0\r
+# PROP Use_Debug_Libraries 0\r
+# PROP Output_Dir "Release_TS"\r
+# PROP Intermediate_Dir "Release_TS"\r
+# PROP Ignore_Export_Lib 0\r
+# PROP Target_Dir ""\r
+# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "APC_EXPORTS" /YX /FD /c\r
+# ADD CPP /nologo /MT /W3 /GX /O2 /I "..\..\..\php4" /I "..\..\..\php4\main" /I "..\..\..\php4\Zend" /I "..\..\..\php4\TSRM" /I "..\..\..\php4\win32" /I "..\..\..\php4\regex" /D "TSRM_LOCKS" /D HAVE_APC=1 /D "COMPILE_DL_APC" /D ZEND_DEBUG=0 /D ZTS=1 /D "ZEND_WIN32" /D "PHP_WIN32" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "APC_EXPORTS" /YX /FD /c\r
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32\r
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32\r
+# ADD BASE RSC /l 0x409 /d "NDEBUG"\r
+# ADD RSC /l 0x409 /d "NDEBUG"\r
+BSC32=bscmake.exe\r
+# ADD BASE BSC32 /nologo\r
+# ADD BSC32 /nologo\r
+LINK32=link.exe\r
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386\r
+# ADD LINK32 php4ts.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386 /out:"../../Release_TS/php_apc.dll" /libpath:"..\..\..\php4\Release_TS" /libpath:"..\..\..\php4\Release_TS_Inline"\r
+\r
+!ENDIF \r
+\r
+# Begin Target\r
+\r
+# Name "apc - Win32 Debug_TS"\r
+# Name "apc - Win32 Release_TS"\r
+# Begin Group "Source Files"\r
+\r
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"\r
+# Begin Source File\r
+\r
+SOURCE=.\apc.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_cache.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_compile.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_debug.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_fcntl_win32.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_main.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_rfc1867.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_shm.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_sma.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_stack.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_zend.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\php_apc.c\r
+# End Source File\r
+# End Group\r
+# Begin Group "Header Files"\r
+\r
+# PROP Default_Filter "h;hpp;hxx;hm;inl"\r
+# Begin Source File\r
+\r
+SOURCE=.\apc.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_cache.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_compile.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_debug.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_fcntl.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_globals.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_lock.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_main.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_php.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_shm.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_sma.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_stack.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\apc_zend.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\php_apc.h\r
+# End Source File\r
+# End Group\r
+# Begin Group "Resource Files"\r
+\r
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"\r
+# End Group\r
+# End Target\r
+# End Project\r
diff -ubrN php-5.2.5-orig/ext/apc/apc_fcntl.c php-5.2.5/ext/apc/apc_fcntl.c
--- php-5.2.5-orig/ext/apc/apc_fcntl.c  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_fcntl.c       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,118 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_fcntl.c,v 3.25 2006/06/19 02:52:49 rasmus Exp $ */
+
+#include "apc_fcntl.h"
+#include "apc.h"
+#include <unistd.h>
+#include <fcntl.h>
+
+int apc_fcntl_create(const char* pathname)
+{
+    int fd;
+    if(pathname == NULL) {
+        char lock_path[] = "/tmp/.apc.XXXXXX";
+        mktemp(lock_path);
+        fd = open(lock_path, O_RDWR|O_CREAT, 0666);
+        if(fd > 0 ) {
+            unlink(lock_path);
+            return fd;
+        } else {
+            apc_eprint("apc_fcntl_create: open(%s, O_RDWR|O_CREAT, 0666) failed:", lock_path);
+            return -1;
+        }
+    }
+    fd = open(pathname, O_RDWR|O_CREAT, 0666);
+    if(fd > 0 ) {
+        unlink(pathname);
+        return fd;
+    }
+    apc_eprint("apc_fcntl_create: open(%s, O_RDWR|O_CREAT, 0666) failed:", pathname);
+    return -1;
+}
+
+void apc_fcntl_destroy(int fd)
+{
+    close(fd);
+}
+
+static int lock_reg(int fd, int cmd, int type, off_t offset, int whence, off_t len)
+{
+  int ret;
+  struct flock lock;
+
+  lock.l_type = type;
+  lock.l_start = offset;
+  lock.l_whence = whence;
+  lock.l_len = len;
+  lock.l_pid = 0;
+
+  do { ret = fcntl(fd, cmd, &lock) ; }
+  while(ret < 0 && errno == EINTR);
+  return(ret);
+}
+
+void apc_fcntl_lock(int fd)
+{
+    if(lock_reg(fd, F_SETLKW, F_WRLCK, 0, SEEK_SET, 0) < 0) {
+        apc_eprint("apc_fcntl_lock failed:");
+    }
+}
+
+void apc_fcntl_rdlock(int fd)
+{
+    if(lock_reg(fd, F_SETLKW, F_RDLCK, 0, SEEK_SET, 0) < 0) {
+        apc_eprint("apc_fcntl_rdlock failed:");
+    }
+}
+
+zend_bool apc_fcntl_nonblocking_lock(int fd)
+{
+    if(lock_reg(fd, F_SETLK, F_WRLCK, 0, SEEK_SET, 0) < 0) {
+        if(errno==EACCES||errno==EAGAIN) return 0;
+        else apc_eprint("apc_fcntl_lock failed:");
+    }
+    return 1;
+}
+
+void apc_fcntl_unlock(int fd)
+{
+    if(lock_reg(fd, F_SETLKW, F_UNLCK, 0, SEEK_SET, 0) < 0) {
+        apc_eprint("apc_fcntl_unlock failed:");
+    }
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_fcntl.h php-5.2.5/ext/apc/apc_fcntl.h
--- php-5.2.5-orig/ext/apc/apc_fcntl.h  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_fcntl.h       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,50 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt.                                 |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_fcntl.h,v 3.14 2006/05/31 22:24:48 rasmus Exp $ */
+
+#ifndef APC_FCNTL_H
+#define APC_FCNTL_H
+
+
+extern int apc_fcntl_create(const char* pathname);
+extern void apc_fcntl_destroy(int fd);
+extern void apc_fcntl_lock(int fd);
+extern void apc_fcntl_rdlock(int fd);
+extern void apc_fcntl_unlock(int fd);
+extern unsigned char apc_fcntl_nonblocking_lock(int fd);
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_fcntl_win32.c php-5.2.5/ext/apc/apc_fcntl_win32.c
--- php-5.2.5-orig/ext/apc/apc_fcntl_win32.c    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_fcntl_win32.c 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,117 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: George Schlossnagle <george@omniti.com>                     |
+  |          Edin Kadribasic <edink@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_fcntl_win32.c,v 3.6 2006/03/12 00:31:45 rasmus Exp $ */
+
+#include "apc_fcntl.h"
+#include "apc.h"
+#include <php.h>
+#include <win32/flock.h>
+#include <io.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+int apc_fcntl_create(const char* pathname)
+{
+       char *lock_file = emalloc(MAXPATHLEN);
+       HANDLE fd;
+       DWORD tmplen;
+       static int i=0;
+       
+       tmplen = GetTempPath(MAXPATHLEN, lock_file);
+       if (!tmplen) {
+               efree(lock_file);
+               return -1;
+       }
+
+       snprintf(lock_file + tmplen, MAXPATHLEN - tmplen - 1, "apc.lock.%d", i++);
+       
+       fd = CreateFile(lock_file,
+        GENERIC_READ | GENERIC_WRITE,
+        FILE_SHARE_READ | FILE_SHARE_WRITE,
+        NULL,
+        OPEN_ALWAYS,
+        FILE_ATTRIBUTE_NORMAL,
+        NULL);
+        
+
+       if (fd == INVALID_HANDLE_VALUE) {
+               apc_eprint("apc_fcntl_create: could not open %s", lock_file);
+               efree(lock_file);
+               return -1;
+       }
+       
+       efree(lock_file);
+       return (int)fd;
+}
+
+void apc_fcntl_destroy(int fd)
+{
+       CloseHandle((HANDLE)fd);
+}
+
+void apc_fcntl_lock(int fd)
+{
+       OVERLAPPED offset =     {0, 0, 0, 0, NULL};
+       
+       if (!LockFileEx((HANDLE)fd, LOCKFILE_EXCLUSIVE_LOCK, 0, 1, 0, &offset)) {
+               apc_eprint("apc_fcntl_lock failed errno:%d", GetLastError());
+       }
+}
+
+void apc_fcntl_rdlock(int fd)
+{
+       OVERLAPPED offset =     {0, 0, 0, 0, NULL};
+       
+       if (!LockFileEx((HANDLE)fd, 0, 0, 1, 0, &offset)) {
+               apc_eprint("apc_fcntl_rdlock failed errno:%d", GetLastError());
+       }
+}
+
+void apc_fcntl_unlock(int fd)
+{
+       OVERLAPPED offset =     {0, 0, 0, 0, NULL};
+
+       if (!UnlockFileEx((HANDLE)fd, 0, 1, 0, &offset)) {
+               DWORD error_code = GetLastError();
+               /* Ignore already unlocked error */
+               if (error_code != ERROR_NOT_LOCKED) {
+                       apc_eprint("apc_fcntl_unlock failed errno:%d", error_code);
+               }
+       }
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_futex.c php-5.2.5/ext/apc/apc_futex.c
--- php-5.2.5-orig/ext/apc/apc_futex.c  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_futex.c       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,116 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: apc_futex.c,v 3.2 2006/10/12 08:23:16 shire Exp $ */
+
+/***************************************************************************
+* Futex (Fast Userspace Mutex) support for APC
+* 
+* Futex support provides user space locking with system calls only
+* for the contended cases.  Some required reading for this functionality is:
+*
+* 'Fuss, Futexes and Furwocks: Fast Userlevel Locking in Linux' 
+*  by Hubertus Franke, Rusty Russell, and Matthew Kirkwood
+*   http://www.realitydiluted.com/nptl-uclibc/docs/futex.pdf
+*
+* 'Futexes are Tricky' by Ulrich Drepper 
+*    http://people.redhat.com/drepper/futex.pdf
+*
+* 
+* This implementation is optimized and designed for the i386 and x86_64 
+* architectures.  Other architectures may require additional design 
+* to efficiently and safely implement this functionality. 
+*
+* Lock values are:
+* 0 = Unlocked
+* 1 = Locked without any waiting processes
+* 2 = Locked with an unknown number of waiting processes
+*
+***************************************************************************/
+
+#include "apc.h"
+#include "apc_futex.h"
+
+#ifdef APC_FUTEX_LOCKS
+
+
+inline int apc_futex_create()
+{
+    return 0;
+}
+
+inline void apc_futex_destroy(volatile int* lock)
+{
+    return;
+}
+
+void apc_futex_lock(volatile int* lock)
+{
+    int c;
+  
+    /*  Attempt to obtain a lock if not currently locked.  If the previous
+     *  value was not 0 then we did not obtain the lock, and must wait.
+     *  If the previous value was 1 (has no waiting processes) then we
+     *  set the lock to 2 before blocking on the futex wait operation.  
+     *  This implementation suffers from the possible difficulty of 
+     *  efficently implementing the atomic xchg operation on some
+     *  architectures, and could also cause unecessary wake operations by
+     *  setting the lock to 2 when there are no additional waiters.
+     */ 
+    if((c = apc_cmpxchg(lock, 0, 1)) != 0) {
+        if(c != 2) {
+            c = apc_xchg(lock, 2);
+        }
+        while(c != 0) {
+            apc_futex_wait(lock, 2);
+            c = apc_xchg(lock, 2);
+        }
+    }
+    
+}
+
+/* non-blocking lock returns 1 when the lock has been obtained, 0 if it would block */
+inline zend_bool apc_futex_nonblocking_lock(volatile int* lock)
+{
+    return apc_cmpxchg(lock, 0, 1) == 0;
+}
+
+
+inline void apc_futex_unlock(volatile int* lock)
+{
+    /* set the lock to 0, if it's previous values was not 1 (no waiters)
+     * then perform a wake operation on one process letting it know the lock 
+     * is available.  This is an optimization to save wake calls if there
+     * are no waiting processes for the lock 
+     */
+    if(apc_xchg(lock,0) != 1) {
+        apc_futex_wake(lock, 1);
+    }
+}
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_futex.h php-5.2.5/ext/apc/apc_futex.h
--- php-5.2.5-orig/ext/apc/apc_futex.h  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_futex.h       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,55 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: apc_futex.h,v 3.2 2006/10/12 08:23:16 shire Exp $ */
+
+#ifndef APC_FUTEX_H
+#define APC_FUTEX_H
+
+#include "apc.h"
+
+#ifdef APC_FUTEX_LOCKS 
+
+#include <asm/types.h>
+#include <unistd.h>
+#include <linux/futex.h>
+
+#include "arch/atomic.h"
+
+#define sys_futex(futex, op, val, timeout) syscall(SYS_futex, futex, op, val, timeout)
+#define apc_futex_wait(val, oldval) sys_futex((void*)val, FUTEX_WAIT, oldval, NULL)
+#define apc_futex_wake(val, count) sys_futex((void*)val, FUTEX_WAKE, count, NULL)
+
+int apc_futex_create();
+void apc_futex_destroy(volatile int* lock);
+void apc_futex_lock(volatile int* lock);
+void apc_futex_unlock(volatile int* lock);
+
+#endif
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_globals.h php-5.2.5/ext/apc/apc_globals.h
--- php-5.2.5-orig/ext/apc/apc_globals.h        1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_globals.h     2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,119 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt.                                 |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_globals.h,v 3.70 2007/12/26 22:46:33 rasmus Exp $ */
+
+#ifndef APC_GLOBALS_H
+#define APC_GLOBALS_H
+
+#define APC_VERSION "3.0.16"
+
+#include "apc_cache.h"
+#include "apc_stack.h"
+#include "apc_php.h"
+
+ZEND_BEGIN_MODULE_GLOBALS(apc)
+    /* configuration parameters */
+    zend_bool enabled;      /* if true, apc is enabled (defaults to true) */
+    long shm_segments;      /* number of shared memory segments to use */
+    long shm_size;          /* size of each shared memory segment (in MB) */
+    long num_files_hint;    /* parameter to apc_cache_create */
+    long user_entries_hint;
+    long gc_ttl;            /* parameter to apc_cache_create */
+    long ttl;               /* parameter to apc_cache_create */
+    long user_ttl;
+#if APC_MMAP
+    char *mmap_file_mask;   /* mktemp-style file-mask to pass to mmap */
+#endif
+    char** filters;         /* array of regex filters that prevent caching */
+
+    /* module variables */
+    zend_bool initialized;       /* true if module was initialized */
+    apc_stack_t* cache_stack;    /* the stack of cached executable code */
+    zend_bool cache_by_default;  /* true if files should be cached unless filtered out */
+                                 /* false if files should only be cached if filtered in */
+    long slam_defense;           /* Probability of a process not caching an uncached file */
+    size_t* mem_size_ptr;        /* size of blocks allocated to file being cached (NULL outside my_compile_file) */
+    long file_update_protection; /* Age in seconds before a file is eligible to be cached - 0 to disable */
+    zend_bool enable_cli;        /* Flag to override turning APC off for CLI */
+    long max_file_size;                 /* Maximum size of file, in bytes that APC will be allowed to cache */
+    long slam_rand;              /* A place to store the slam rand value for the request */
+    zend_bool fpstat;            /* true if fullpath includes should be stat'ed */
+    zend_bool stat_ctime;        /* true if ctime in addition to mtime should be checked */
+    zend_bool write_lock;        /* true for a global write lock */
+    zend_bool report_autofilter; /* true for auto-filter warnings */
+    zend_bool include_once;         /* Override the ZEND_INCLUDE_OR_EVAL opcode handler to avoid pointless fopen()s [still experimental] */
+    apc_optimize_function_t apc_optimize_function;   /* optimizer function callback */
+#ifdef MULTIPART_EVENT_FORMDATA
+    zend_bool rfc1867;           /* Flag to enable rfc1867 handler */
+    char* rfc1867_prefix;        /* Key prefix */
+    char* rfc1867_name;          /* Name of hidden field to activate upload progress/key suffix */
+    double rfc1867_freq;         /* Update frequency as percentage or bytes */
+#endif
+    HashTable *copied_zvals;     /* my_copy recursion detection list */
+#ifdef ZEND_ENGINE_2
+    int reserved_offset;         /* offset for apc info in op_array->reserved[] */
+#endif
+    zend_bool localcache;        /* enable local cache */
+    long localcache_size;        /* size of fast cache */
+    apc_local_cache_t* lcache;   /* unlocked local cache */
+    zend_bool force_file_update; /* force files to be updated during apc_compile_file */
+    char canon_path[MAXPATHLEN]; /* canonical path for key data */
+#if APC_FILEHITS
+    zval *filehits;             /* Files that came from the cache for this request */
+#endif
+    zend_bool coredump_unmap;    /* Trap signals that coredump and unmap shared memory */
+ZEND_END_MODULE_GLOBALS(apc)
+
+/* (the following declaration is defined in php_apc.c) */
+ZEND_EXTERN_MODULE_GLOBALS(apc)
+
+#ifdef ZTS
+# define APCG(v) TSRMG(apc_globals_id, zend_apc_globals *, v)
+#else
+# define APCG(v) (apc_globals.v)
+#endif
+
+/* True globals */
+extern apc_cache_t* apc_cache;       /* the global compiler cache */
+extern apc_cache_t* apc_user_cache;  /* the global user content cache */
+extern void* apc_compiled_filters;   /* compiled filters */
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc.h php-5.2.5/ext/apc/apc.h
--- php-5.2.5-orig/ext/apc/apc.h        1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc.h     2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,126 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc.h,v 3.14 2007/03/17 14:01:41 gopalv Exp $ */
+
+#ifndef APC_H
+#define APC_H
+
+/*
+ * This module defines utilities and helper functions used elsewhere in APC.
+ */
+
+/* Commonly needed C library headers. */
+#include <assert.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+/* UNIX headers (needed for struct stat) */
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifndef PHP_WIN32
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "php.h"
+
+/* log levels constants (see apc_log) */
+enum { APC_DBG, APC_NOTICE, APC_WARNING, APC_ERROR };
+
+/* typedefs for extensible memory allocators */
+typedef void* (*apc_malloc_t)(size_t);
+typedef void  (*apc_free_t)  (void*);
+
+/* wrappers for memory allocation routines */
+extern void* apc_emalloc(size_t n);
+extern void* apc_erealloc(void* p, size_t n);
+extern void apc_efree(void* p);
+extern char* apc_estrdup(const char* s);
+extern void* apc_xstrdup(const char* s, apc_malloc_t f);
+extern void* apc_xmemcpy(const void* p, size_t n, apc_malloc_t f);
+
+/* console display functions */
+extern void apc_log(int level, const char* fmt, ...);
+extern void apc_eprint(const char* fmt, ...);
+extern void apc_wprint(const char* fmt, ...);
+extern void apc_dprint(const char* fmt, ...);
+extern void apc_nprint(const char* fmt, ...);
+
+/* string and text manipulation */
+extern char* apc_append(const char* s, const char* t);
+extern char* apc_substr(const char* s, int start, int length);
+extern char** apc_tokenize(const char* s, char delim);
+
+/* filesystem functions */
+
+typedef struct apc_fileinfo_t 
+{
+    char fullpath[MAXPATHLEN+1];
+    struct stat st_buf;
+} apc_fileinfo_t;
+
+#ifndef PHP_WIN32
+#define apc_stat(f, b) stat(f, b)
+#else
+#define apc_stat(f, b) apc_win32_stat(f, b TSRMLS_CC)
+extern int apc_win32_stat(const char *path, struct stat *buf TSRMLS_DC);
+#endif
+extern int apc_search_paths(const char* filename, const char* path, apc_fileinfo_t* fileinfo);
+
+/* regular expression wrapper functions */
+extern void* apc_regex_compile_array(char* patterns[]);
+extern void apc_regex_destroy_array(void* p);
+extern int apc_regex_match_array(void* p, const char* input);
+
+/* apc_crc32: returns the CRC-32 checksum of the first len bytes in buf */
+extern unsigned int apc_crc32(const char* buf, int len);
+
+#define APC_NEGATIVE_MATCH 1
+#define APC_POSITIVE_MATCH 2
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_lock.h php-5.2.5/ext/apc/apc_lock.h
--- php-5.2.5-orig/ext/apc/apc_lock.h   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_lock.h        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,105 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_lock.h,v 3.20 2007/01/29 07:39:02 shire Exp $ */
+
+#ifndef APC_LOCK
+#define APC_LOCK
+
+#include "apc_sem.h"
+#include "apc_fcntl.h"
+#include "apc_pthreadmutex.h"
+#include "apc_futex.h"
+#include "apc_spin.h"
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef TSRM_LOCKS
+#define RDLOCK_AVAILABLE 0
+#define NONBLOCKING_LOCK_AVAILABLE 0
+/* quick & dirty: use TSRM mutex locks for now */
+#define apc_lck_create(a,b,c,d) d=(int)tsrm_mutex_alloc()
+#define apc_lck_destroy(a)    tsrm_mutex_free((MUTEX_T)a)
+#define apc_lck_lock(a)       tsrm_mutex_lock((MUTEX_T)a)
+#define apc_lck_rdlock(a)     tsrm_mutex_lock((MUTEX_T)a)
+#define apc_lck_unlock(a)     tsrm_mutex_unlock((MUTEX_T)a)
+#elif defined(APC_SEM_LOCKS)
+#define RDLOCK_AVAILABLE 0
+#define NONBLOCKING_LOCK_AVAILABLE 0
+#define apc_lck_t int
+#define apc_lck_create(a,b,c,d) d=apc_sem_create(NULL,(b),(c))
+#define apc_lck_destroy(a)    apc_sem_destroy(a)
+#define apc_lck_lock(a)       apc_sem_lock(a)
+#define apc_lck_rdlock(a)     apc_sem_lock(a)
+#define apc_lck_unlock(a)     apc_sem_unlock(a)
+#elif defined(APC_PTHREADMUTEX_LOCKS)
+#define RDLOCK_AVAILABLE 0
+#define NONBLOCKING_LOCK_AVAILABLE 1
+#define apc_lck_t pthread_mutex_t 
+#define apc_lck_create(a,b,c,d) apc_pthreadmutex_create((pthread_mutex_t*)&d)
+#define apc_lck_destroy(a)    apc_pthreadmutex_destroy(&a)
+#define apc_lck_lock(a)       apc_pthreadmutex_lock(&a)
+#define apc_lck_nb_lock(a)    apc_pthreadmutex_nonblocking_lock(&a)
+#define apc_lck_rdlock(a)     apc_pthreadmutex_lock(&a)
+#define apc_lck_unlock(a)     apc_pthreadmutex_unlock(&a)
+#elif defined(APC_FUTEX_LOCKS)
+#define NONBLOCKING_LOCK_AVAILABLE 1 
+#define apc_lck_t int 
+#define apc_lck_create(a,b,c,d) d=apc_futex_create()
+#define apc_lck_destroy(a)    apc_futex_destroy(&a)
+#define apc_lck_lock(a)       apc_futex_lock(&a)
+#define apc_lck_nb_lock(a)    apc_futex_nonblocking_lock(&a)
+#define apc_lck_rdlock(a)     apc_futex_lock(&a)
+#define apc_lck_unlock(a)     apc_futex_unlock(&a)
+#elif defined(APC_SPIN_LOCKS)
+#define NONBLOCKING_LOCK_AVAILABLE APC_SLOCK_NONBLOCKING_LOCK_AVAILABLE
+#define apc_lck_t slock_t 
+#define apc_lck_create(a,b,c,d) apc_slock_create((slock_t*)&(d))
+#define apc_lck_destroy(a)    apc_slock_destroy(&a)
+#define apc_lck_lock(a)       apc_slock_lock(&a)
+#define apc_lck_nb_lock(a)    apc_slock_nonblocking_lock(&a)
+#define apc_lck_rdlock(a)     apc_slock_lock(&a)
+#define apc_lck_unlock(a)     apc_slock_unlock(&a)
+#else
+#define RDLOCK_AVAILABLE 1
+#ifdef PHP_WIN32
+#define NONBLOCKING_LOCK_AVAILABLE 0
+#else
+#define NONBLOCKING_LOCK_AVAILABLE 1
+#endif
+#define apc_lck_t int
+#define apc_lck_create(a,b,c,d) d=apc_fcntl_create((a))
+#define apc_lck_destroy(a)    apc_fcntl_destroy(a)
+#define apc_lck_lock(a)       apc_fcntl_lock(a)
+#define apc_lck_nb_lock(a)    apc_fcntl_nonblocking_lock(a)
+#define apc_lck_rdlock(a)     apc_fcntl_rdlock(a)
+#define apc_lck_unlock(a)     apc_fcntl_unlock(a)
+#endif
+
+#endif
diff -ubrN php-5.2.5-orig/ext/apc/apc_main.c php-5.2.5/ext/apc/apc_main.c
--- php-5.2.5-orig/ext/apc/apc_main.c   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_main.c        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,701 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_main.c,v 3.103 2007/11/14 19:46:46 shire Exp $ */
+
+#include "apc_php.h"
+#include "apc_main.h"
+#include "apc.h"
+#include "apc_lock.h"
+#include "apc_cache.h"
+#include "apc_compile.h"
+#include "apc_globals.h"
+#include "apc_sma.h"
+#include "apc_stack.h"
+#include "apc_zend.h"
+#include "SAPI.h"
+#if PHP_API_VERSION <= 20020918
+#if HAVE_APACHE
+#ifdef APC_PHP4_STAT
+#undef XtOffsetOf
+#include "httpd.h"
+#endif
+#endif
+#endif
+
+/* {{{ module variables */
+
+/* pointer to the original Zend engine compile_file function */
+typedef zend_op_array* (zend_compile_t)(zend_file_handle*, int TSRMLS_DC);
+static zend_compile_t *old_compile_file;
+
+/* }}} */
+
+/* {{{ get/set old_compile_file (to interact with other extensions that need the compile hook) */
+static zend_compile_t* set_compile_hook(zend_compile_t *ptr)
+{
+    zend_compile_t *retval = old_compile_file;
+
+    if (ptr != NULL) old_compile_file = ptr;
+    return retval;
+}
+/* }}} */
+
+/* {{{ install_function */
+static int install_function(apc_function_t fn TSRMLS_DC)
+{
+    int status =
+        zend_hash_add(EG(function_table),
+                      fn.name,
+                      fn.name_len+1,
+                      apc_copy_function_for_execution(fn.function),
+                      sizeof(fn.function[0]),
+                      NULL);
+
+    if (status == FAILURE) {
+        /* apc_eprint("Cannot redeclare %s()", fn.name); */
+    }
+
+    return status;
+}
+/* }}} */
+
+/* {{{ install_class */
+static int install_class(apc_class_t cl TSRMLS_DC)
+{
+    zend_class_entry* class_entry = cl.class_entry;
+    zend_class_entry* parent = NULL;
+    int status;
+#ifdef ZEND_ENGINE_2
+    zend_class_entry** allocated_ce = NULL;
+#endif
+
+
+    /* Special case for mangled names. Mangled names are unique to a file.
+     * There is no way two classes with the same mangled name will occur,
+     * unless a file is included twice. And if in case, a file is included
+     * twice, all mangled name conflicts can be ignored and the class redeclaration
+     * error may be deferred till runtime of the corresponding DECLARE_CLASS
+     * calls.
+     */
+
+    if(cl.name_len != 0 && cl.name[0] == '\0') {
+        if(zend_hash_exists(CG(class_table), cl.name, cl.name_len+1)) {
+            return SUCCESS;
+        }
+    }
+    
+#ifdef ZEND_ENGINE_2    
+    /*
+     * XXX: We need to free this somewhere...
+     */
+    allocated_ce = apc_php_malloc(sizeof(zend_class_entry*));    
+
+    if(!allocated_ce) {
+        return FAILURE;
+    }
+
+    *allocated_ce = 
+#endif        
+    class_entry =
+        apc_copy_class_entry_for_execution(cl.class_entry,
+                                           cl.is_derived);
+
+
+    /* restore parent class pointer for compile-time inheritance */
+    if (cl.parent_name != NULL) {
+#ifdef ZEND_ENGINE_2    
+        zend_class_entry** parent_ptr = NULL;
+        /*
+         * zend_lookup_class has to be due to presence of __autoload, 
+         * just looking up the EG(class_table) is not enough in php5!
+         * Even more dangerously, thanks to __autoload and people using
+         * class names as filepaths for inclusion, this has to be case
+         * sensitive. zend_lookup_class automatically does a case_fold
+         * internally, but passes the case preserved version to __autoload.
+         * Aside: Do NOT pass *strlen(cl.parent_name)+1* because 
+         * zend_lookup_class does it internally anyway!
+         */
+        status = zend_lookup_class(cl.parent_name,
+                                    strlen(cl.parent_name),
+                                    &parent_ptr TSRMLS_CC);
+#else
+        status = zend_hash_find(EG(class_table),
+                                cl.parent_name,
+                                strlen(cl.parent_name)+1,
+                                (void**) &parent);
+#endif
+        if (status == FAILURE) {
+            if(APCG(report_autofilter)) {
+                apc_wprint("Dynamic inheritance detected for class %s", cl.name);
+            }
+            class_entry->parent = NULL;
+            return status;
+        }
+        else {
+#ifdef ZEND_ENGINE_2            
+            parent = *parent_ptr;
+#endif 
+            class_entry->parent = parent;
+#ifdef ZEND_ENGINE_2
+            zend_do_inheritance(class_entry, parent TSRMLS_CC);
+#else
+            zend_do_inheritance(class_entry, parent);
+#endif
+        }
+
+
+    }
+
+#ifdef ZEND_ENGINE_2                           
+    status = zend_hash_add(EG(class_table),
+                           cl.name,
+                           cl.name_len+1,
+                           allocated_ce,
+                           sizeof(zend_class_entry*),
+                           NULL);
+#else                           
+    status = zend_hash_add(EG(class_table),
+                           cl.name,
+                           cl.name_len+1,
+                           class_entry,
+                           sizeof(zend_class_entry),
+                           NULL);
+#endif                           
+
+    if (status == FAILURE) {
+        apc_eprint("Cannot redeclare class %s", cl.name);
+    } 
+    return status;
+}
+/* }}} */
+
+/* {{{ uninstall_class */
+static int uninstall_class(apc_class_t cl TSRMLS_DC)
+{
+    int status;
+
+#ifdef ZEND_ENGINE_2                           
+    status = zend_hash_del(EG(class_table),
+                           cl.name,
+                           cl.name_len+1);
+#else                           
+    status = zend_hash_del(EG(class_table),
+                           cl.name,
+                           cl.name_len+1);
+#endif                           
+    if (status == FAILURE) {
+        apc_eprint("Cannot delete class %s", cl.name);
+    } 
+    return status;
+}
+/* }}} */
+
+/* {{{ compare_file_handles */
+static int compare_file_handles(void* a, void* b)
+{
+    zend_file_handle* fh1 = (zend_file_handle*)a;
+    zend_file_handle* fh2 = (zend_file_handle*)b;
+    return (fh1->type == fh2->type && 
+            fh1->filename == fh2->filename &&
+            fh1->opened_path == fh2->opened_path);
+}
+/* }}} */
+
+/* {{{ cached_compile */
+static zend_op_array* cached_compile(zend_file_handle* h,
+                                        int type TSRMLS_DC)
+{
+    apc_cache_entry_t* cache_entry;
+    int i, ii;
+
+    cache_entry = (apc_cache_entry_t*) apc_stack_top(APCG(cache_stack));
+    assert(cache_entry != NULL);
+
+    if (cache_entry->data.file.classes) {
+        for (i = 0; cache_entry->data.file.classes[i].class_entry != NULL; i++) {
+            if(install_class(cache_entry->data.file.classes[i] TSRMLS_CC) == FAILURE) {
+                goto default_compile;
+            }
+        }
+    }
+
+    if (cache_entry->data.file.functions) {
+        for (i = 0; cache_entry->data.file.functions[i].function != NULL; i++) {
+            install_function(cache_entry->data.file.functions[i] TSRMLS_CC);
+        }
+    }
+
+
+    return apc_copy_op_array_for_execution(NULL, cache_entry->data.file.op_array TSRMLS_CC);
+
+default_compile:
+
+    if(APCG(report_autofilter)) {
+        apc_wprint("Autofiltering %s", h->opened_path);
+    }
+
+    if(cache_entry->data.file.classes) {
+        for(ii = 0; ii < i ; ii++) {
+            uninstall_class(cache_entry->data.file.classes[ii] TSRMLS_CC);
+        }
+    }
+    
+    apc_stack_pop(APCG(cache_stack)); /* pop out cache_entry */
+    
+    apc_cache_release(apc_cache, cache_entry);
+
+    /* cannot free up cache data yet, it maybe in use */
+    
+    zend_llist_del_element(&CG(open_files), h, compare_file_handles); /* XXX: kludge */
+    
+    h->type = ZEND_HANDLE_FILENAME;
+
+    return NULL;
+}
+/* }}} */
+
+/* {{{ my_compile_file
+   Overrides zend_compile_file */
+static zend_op_array* my_compile_file(zend_file_handle* h,
+                                               int type TSRMLS_DC)
+{
+    apc_cache_key_t key;
+    apc_cache_entry_t* cache_entry;
+    zend_op_array* op_array;
+    int num_functions, num_classes, ret;
+    zend_op_array* alloc_op_array;
+    apc_function_t* alloc_functions;
+    apc_class_t* alloc_classes;
+    time_t t;
+    char *path;
+    size_t mem_size;
+
+    if (!APCG(enabled) || (apc_cache_busy(apc_cache) && !APCG(localcache))) {
+               return old_compile_file(h, type TSRMLS_CC);
+       }
+
+    /* check our regular expression filters */
+    if (APCG(filters) && apc_compiled_filters) {
+        int ret = apc_regex_match_array(apc_compiled_filters, h->filename);
+        if(ret == APC_NEGATIVE_MATCH || (ret != APC_POSITIVE_MATCH && !APCG(cache_by_default))) {
+            return old_compile_file(h, type TSRMLS_CC);
+        }
+    } else if(!APCG(cache_by_default)) {
+        return old_compile_file(h, type TSRMLS_CC);
+    }
+
+#if PHP_API_VERSION < 20041225
+#if HAVE_APACHE && defined(APC_PHP4_STAT)
+    t = ((request_rec *)SG(server_context))->request_time;
+#else 
+    t = time(0);
+#endif
+#else 
+    t = sapi_get_request_time(TSRMLS_C);
+#endif
+
+#ifdef __DEBUG_APC__
+    fprintf(stderr,"1. h->opened_path=[%s]  h->filename=[%s]\n", h->opened_path?h->opened_path:"null",h->filename);
+#endif
+
+    /* try to create a cache key; if we fail, give up on caching */
+    if (!apc_cache_make_file_key(&key, h->filename, PG(include_path), t TSRMLS_CC)) {
+        return old_compile_file(h, type TSRMLS_CC);
+    }
+
+
+    if(!APCG(force_file_update)) {
+        if(APCG(localcache)) {
+            /* search for the file in the local cache */
+            cache_entry = apc_local_cache_find(APCG(lcache), key, t);
+        } else {
+            /* search for the file in the cache */
+            cache_entry = apc_cache_find(apc_cache, key, t);
+        }
+    } else {
+        cache_entry = NULL;
+    }
+
+    if (cache_entry != NULL) {
+        int dummy = 1;
+        if (h->opened_path == NULL) {
+            h->opened_path = estrdup(cache_entry->data.file.filename);
+        }
+        zend_hash_add(&EG(included_files), h->opened_path, strlen(h->opened_path)+1, (void *)&dummy, sizeof(int), NULL);
+        zend_llist_add_element(&CG(open_files), h); /* XXX kludge */
+        apc_stack_push(APCG(cache_stack), cache_entry);
+        op_array = cached_compile(h, type TSRMLS_CC);
+        if(op_array) {
+#ifdef APC_FILEHITS
+            /* If the file comes from the cache, add it to the global request file list */
+            add_next_index_string(APCG(filehits), h->filename, 1);
+#endif
+            return op_array;
+        }
+        if(APCG(report_autofilter)) {
+            apc_wprint("Recompiling %s", h->opened_path);
+        }
+        /* TODO: check what happens with EG(included_files) */
+    }
+    
+    if(apc_cache_busy(apc_cache) && APCG(localcache)) {
+        /* possibly local cache returned NULL because cache is busy */
+               return old_compile_file(h, type TSRMLS_CC);
+       }
+
+    /* remember how many functions and classes existed before compilation */
+    num_functions = zend_hash_num_elements(CG(function_table));
+    num_classes   = zend_hash_num_elements(CG(class_table));
+    
+    /* compile the file using the default compile function */
+    op_array = old_compile_file(h, type TSRMLS_CC);
+    if (op_array == NULL) {
+        return NULL;
+    }
+    /*
+     * Basically this will cause a file only to be cached on a percentage 
+     * of the attempts.  This is to avoid cache slams when starting up a
+     * very busy server or when modifying files on a very busy live server.
+     * There is no point having many processes all trying to cache the same
+     * file at the same time.  By introducing a chance of being cached
+     * we theoretically cut the cache slam problem by the given percentage.
+     * For example if apc.slam_defense is set to 66 then 2/3 of the attempts
+     * to cache an uncached file will be ignored.
+     */
+    if(APCG(slam_defense)) {
+        if(APCG(slam_rand)==-1) {
+            APCG(slam_rand) = (int)(100.0*rand()/(RAND_MAX+1.0));
+        }
+        if(APCG(slam_rand) < APCG(slam_defense)) {
+            return op_array;
+        }
+    }
+
+    /* Make sure the mtime reflects the files last known mtime in the case of fpstat==0 */
+    if(key.type == APC_CACHE_KEY_FPFILE) {
+        apc_fileinfo_t fileinfo;
+        struct stat *tmp_buf = NULL;
+        if(!strcmp(SG(request_info).path_translated, h->filename)) {
+            tmp_buf = sapi_get_stat(TSRMLS_C);  /* Apache has already done this stat() for us */
+        }
+        if(tmp_buf) { 
+            fileinfo.st_buf = *tmp_buf;
+        } else {
+            if (apc_search_paths(h->filename, PG(include_path), &fileinfo) != 0) {
+#ifdef __DEBUG_APC__
+                fprintf(stderr,"Stat failed %s - bailing (%s) (%d)\n",filename,SG(request_info).path_translated);
+#endif
+                return op_array;
+            }
+        }
+        key.mtime = fileinfo.st_buf.st_mtime;
+    }
+
+    HANDLE_BLOCK_INTERRUPTIONS();
+
+#if NONBLOCKING_LOCK_AVAILABLE
+    if(APCG(write_lock)) {
+        if(!apc_cache_write_lock(apc_cache)) {
+            HANDLE_UNBLOCK_INTERRUPTIONS();
+            return op_array;
+        }
+    }
+#endif
+
+    mem_size = 0;
+    APCG(mem_size_ptr) = &mem_size;
+    if(!(alloc_op_array = apc_copy_op_array(NULL, op_array, apc_sma_malloc, apc_sma_free TSRMLS_CC))) {
+        apc_cache_expunge(apc_cache,t);
+        apc_cache_expunge(apc_user_cache,t);
+        APCG(mem_size_ptr) = NULL;
+#if NONBLOCKING_LOCK_AVAILABLE
+        if(APCG(write_lock)) {
+            apc_cache_write_unlock(apc_cache);
+        }
+#endif
+        HANDLE_UNBLOCK_INTERRUPTIONS();
+        return op_array;
+    }
+    
+    if(!(alloc_functions = apc_copy_new_functions(num_functions, apc_sma_malloc, apc_sma_free TSRMLS_CC))) {
+        apc_free_op_array(alloc_op_array, apc_sma_free);
+        apc_cache_expunge(apc_cache,t);
+        apc_cache_expunge(apc_user_cache,t);
+        APCG(mem_size_ptr) = NULL;
+#if NONBLOCKING_LOCK_AVAILABLE
+        if(APCG(write_lock)) {
+            apc_cache_write_unlock(apc_cache);
+        }
+#endif
+        HANDLE_UNBLOCK_INTERRUPTIONS();
+        return op_array;
+    }
+    if(!(alloc_classes = apc_copy_new_classes(op_array, num_classes, apc_sma_malloc, apc_sma_free TSRMLS_CC))) {
+        apc_free_op_array(alloc_op_array, apc_sma_free);
+        apc_free_functions(alloc_functions, apc_sma_free);
+        apc_cache_expunge(apc_cache,t);
+        apc_cache_expunge(apc_user_cache,t);
+        APCG(mem_size_ptr) = NULL;
+#if NONBLOCKING_LOCK_AVAILABLE
+        if(APCG(write_lock)) {
+            apc_cache_write_unlock(apc_cache);
+        }
+#endif
+        HANDLE_UNBLOCK_INTERRUPTIONS();
+        return op_array;
+    }
+
+    path = h->opened_path;
+    if(!path) path=h->filename;
+
+#ifdef __DEBUG_APC__
+    fprintf(stderr,"2. h->opened_path=[%s]  h->filename=[%s]\n", h->opened_path?h->opened_path:"null",h->filename);
+#endif
+
+    if(!(cache_entry = apc_cache_make_file_entry(path, alloc_op_array, alloc_functions, alloc_classes))) {
+        apc_free_op_array(alloc_op_array, apc_sma_free);
+        apc_free_functions(alloc_functions, apc_sma_free);
+        apc_free_classes(alloc_classes, apc_sma_free);
+        apc_cache_expunge(apc_cache,t);
+        apc_cache_expunge(apc_user_cache,t);
+        APCG(mem_size_ptr) = NULL;
+#if NONBLOCKING_LOCK_AVAILABLE
+        if(APCG(write_lock)) {
+            apc_cache_write_unlock(apc_cache);
+        }
+#endif
+        HANDLE_UNBLOCK_INTERRUPTIONS();
+        return op_array;
+    }
+    APCG(mem_size_ptr) = NULL;
+    cache_entry->mem_size = mem_size;
+
+    if ((ret = apc_cache_insert(apc_cache, key, cache_entry, t)) != 1) {
+        apc_cache_free_entry(cache_entry);
+        if(ret==-1) {
+            apc_cache_expunge(apc_cache,t);
+            apc_cache_expunge(apc_user_cache,t);
+        }
+    }
+
+#if NONBLOCKING_LOCK_AVAILABLE
+    if(APCG(write_lock)) {
+        apc_cache_write_unlock(apc_cache);
+    }
+#endif
+    HANDLE_UNBLOCK_INTERRUPTIONS();
+
+    return op_array;
+}
+/* }}} */
+
+/* {{{ module init and shutdown */
+
+int apc_module_init(int module_number TSRMLS_DC)
+{
+    /* apc initialization */
+#if APC_MMAP
+    apc_sma_init(APCG(shm_segments), APCG(shm_size)*1024*1024, APCG(mmap_file_mask));
+#else
+    apc_sma_init(APCG(shm_segments), APCG(shm_size)*1024*1024, NULL);
+#endif
+    apc_cache = apc_cache_create(APCG(num_files_hint), APCG(gc_ttl), APCG(ttl));
+    apc_user_cache = apc_cache_create(APCG(user_entries_hint), APCG(gc_ttl), APCG(user_ttl));
+
+    apc_compiled_filters = apc_regex_compile_array(APCG(filters));
+
+    /* override compilation */
+    old_compile_file = zend_compile_file;
+    zend_compile_file = my_compile_file;
+    REGISTER_LONG_CONSTANT("\000apc_magic", (long)&set_compile_hook, CONST_PERSISTENT | CONST_CS);
+
+    APCG(initialized) = 1;
+    return 0;
+}
+
+int apc_module_shutdown(TSRMLS_D)
+{
+    if (!APCG(initialized))
+        return 0;
+
+    /* restore compilation */
+    zend_compile_file = old_compile_file;
+
+    /* 
+     * In case we got interrupted by a SIGTERM or something else during execution
+     * we may have cache entries left on the stack that we need to check to make
+     * sure that any functions or classes these may have added to the global function
+     * and class tables are removed before we blow away the memory that hold them.
+     * 
+     * This is merely to remove memory leak warnings - as the process is terminated
+     * immediately after shutdown. The following while loop can be removed without
+     * affecting anything else.
+     */
+    while (apc_stack_size(APCG(cache_stack)) > 0) {
+        int i;
+        apc_cache_entry_t* cache_entry = (apc_cache_entry_t*) apc_stack_pop(APCG(cache_stack));
+        if (cache_entry->data.file.functions) {
+            for (i = 0; cache_entry->data.file.functions[i].function != NULL; i++) {
+                zend_hash_del(EG(function_table),
+                    cache_entry->data.file.functions[i].name,
+                    cache_entry->data.file.functions[i].name_len+1);
+            }
+        }
+        if (cache_entry->data.file.classes) {
+            for (i = 0; cache_entry->data.file.classes[i].class_entry != NULL; i++) {
+                zend_hash_del(EG(class_table),
+                    cache_entry->data.file.classes[i].name,
+                    cache_entry->data.file.classes[i].name_len+1);
+            }
+        }
+        apc_cache_release(apc_cache, cache_entry);
+    }
+
+    apc_cache_destroy(apc_cache);
+    apc_cache_destroy(apc_user_cache);
+    apc_sma_cleanup();
+
+    APCG(initialized) = 0;
+    return 0;
+}
+
+/* }}} */
+
+/* {{{ process init and shutdown */
+int apc_process_init(int module_number TSRMLS_DC)
+{
+    int minttl = (APCG(gc_ttl) >  APCG(ttl) ? APCG(ttl) : APCG(gc_ttl))/2;
+    int size = APCG(localcache_size);
+    if(APCG(initialized) && APCG(localcache)) {
+        /* TTL is 2 mins by default */
+        APCG(lcache) = apc_local_cache_create(apc_cache, size, minttl ? minttl : 120); 
+    }
+    return 0;
+}
+
+int apc_process_shutdown(TSRMLS_D)
+{
+    if(APCG(initialized) && APCG(localcache) && APCG(lcache)) {
+        apc_local_cache_destroy(APCG(lcache));
+        APCG(lcache) = NULL;
+    }
+       return 0;
+}
+/* }}} */
+
+/* {{{ request init and shutdown */
+
+int apc_request_init(TSRMLS_D)
+{
+    apc_stack_clear(APCG(cache_stack));
+    APCG(slam_rand) = -1;
+    APCG(copied_zvals) = NULL;
+
+#ifdef APC_FILEHITS
+    ALLOC_INIT_ZVAL(APCG(filehits));
+    array_init(APCG(filehits));
+#endif
+
+    return 0;
+}
+
+int apc_request_shutdown(TSRMLS_D)
+{
+    apc_deactivate(TSRMLS_C);
+
+#ifdef APC_FILEHITS
+    zval_ptr_dtor(&APCG(filehits));
+#endif
+
+    return 0;
+}
+
+/* }}} */
+
+/* {{{ apc_deactivate */
+void apc_deactivate(TSRMLS_D)
+{
+    /* The execution stack was unwound, which prevented us from decrementing
+     * the reference counts on active cache entries in `my_execute`.
+     */
+    while (apc_stack_size(APCG(cache_stack)) > 0) {
+        int i;
+        zend_class_entry* zce = NULL;
+        void ** centry = (void*)(&zce);
+#ifdef ZEND_ENGINE_2
+        zend_class_entry** pzce = NULL;
+#endif
+        
+        apc_cache_entry_t* cache_entry =
+            (apc_cache_entry_t*) apc_stack_pop(APCG(cache_stack));
+
+        if (cache_entry->data.file.classes) {
+            for (i = 0; cache_entry->data.file.classes[i].class_entry != NULL; i++) {
+#ifdef ZEND_ENGINE_2
+                centry = (void**)&pzce; /* a triple indirection to get zend_class_entry*** */
+#endif
+                if(zend_hash_find(EG(class_table), 
+                    cache_entry->data.file.classes[i].name,
+                    cache_entry->data.file.classes[i].name_len+1,
+                    (void**)centry) == FAILURE)
+                {
+                    /* double inclusion of conditional classes ends up failing 
+                     * this lookup the second time around.
+                     */
+                    continue;
+                }
+
+#ifdef ZEND_ENGINE_2
+                zce = *pzce;
+#endif
+                zend_hash_del(EG(class_table),
+                    cache_entry->data.file.classes[i].name,
+                    cache_entry->data.file.classes[i].name_len+1);
+                
+                apc_free_class_entry_after_execution(zce);
+            }
+        }
+        apc_cache_release(apc_cache, cache_entry);
+    }
+    if(APCG(localcache)) {
+        apc_local_cache_cleanup(APCG(lcache)); 
+    }
+}
+/* }}} */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_main.h php-5.2.5/ext/apc/apc_main.h
--- php-5.2.5-orig/ext/apc/apc_main.h   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_main.h        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,67 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_main.h,v 3.9 2007/02/28 01:15:18 gopalv Exp $ */
+
+#ifndef APC_MAIN_H
+#define APC_MAIN_H
+
+/*
+ * This module provides the primary interface between PHP and APC.
+ */
+
+extern int apc_module_init(int module_number TSRMLS_DC);
+extern int apc_module_shutdown(TSRMLS_D);
+extern int apc_process_init(int module_number TSRMLS_DC);
+extern int apc_process_shutdown(TSRMLS_D);
+extern int apc_request_init(TSRMLS_D);
+extern int apc_request_shutdown(TSRMLS_D);
+
+/*
+ * apc_deactivate is called by the PHP interpreter when an "exception" is
+ * raised (e.g., a call to the exit function) that unwinds the execution
+ * stack.
+ */
+extern void apc_deactivate();
+
+
+extern const char* apc_version();
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_mmap.c php-5.2.5/ext/apc/apc_mmap.c
--- php-5.2.5-orig/ext/apc/apc_mmap.c   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_mmap.c        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,139 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_mmap.c,v 3.7 2007/12/20 23:00:51 shire Exp $ */
+
+#include "apc.h"
+
+#if APC_MMAP
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+
+/* 
+ * Some operating systems (like FreeBSD) have a MAP_NOSYNC flag that
+ * tells whatever update daemons might be running to not flush dirty
+ * vm pages to disk unless absolutely necessary.  My guess is that
+ * most systems that don't have this probably default to only synching
+ * to disk when absolutely necessary.
+ */
+#ifndef MAP_NOSYNC
+#define MAP_NOSYNC 0
+#endif
+
+void *apc_mmap(char *file_mask, size_t size)
+{
+    void* shmaddr;  /* the shared memory address */
+
+    /* If no filename was provided, do an anonymous mmap */
+    if(!file_mask || (file_mask && !strlen(file_mask))) {
+        shmaddr = (void *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
+    } else {
+        int fd;
+
+        /* 
+         * If the filemask contains .shm we try to do a POSIX-compliant shared memory
+         * backed mmap which should avoid synchs on some platforms.  At least on
+         * FreeBSD this implies MAP_NOSYNC and on Linux it is equivalent of mmap'ing
+         * a file in a mounted shmfs.  For this to work on Linux you need to make sure
+         * you actually have shmfs mounted.  Also on Linux, make sure the file_mask you
+         * pass in has a leading / and no other /'s.  eg.  /apc.shm.XXXXXX
+         * On FreeBSD these are mapped onto the regular filesystem so you can put whatever
+         * path you want here.
+         */
+        if(strstr(file_mask,".shm")) {
+            mktemp(file_mask);
+            fd = shm_open(file_mask, O_CREAT|O_RDWR, S_IRUSR|S_IWUSR);
+            if(fd == -1) {
+                apc_eprint("apc_mmap: shm_open on %s failed:", file_mask);
+                return (void *)-1;
+            }
+            if (ftruncate(fd, size) < 0) {
+                close(fd);
+                shm_unlink(file_mask);
+                apc_eprint("apc_mmap: ftruncate failed:");
+                return (void *)-1;
+            }
+            shmaddr = (void *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+            shm_unlink(file_mask);
+            close(fd);
+        }
+        /*
+         * Support anonymous mmap through the /dev/zero interface as well
+         */
+        else if(!strcmp(file_mask,"/dev/zero")) {
+            fd = open("/dev/zero", O_RDWR, S_IRUSR | S_IWUSR);
+            if(fd == -1) {
+                apc_eprint("apc_mmap: open on /dev/zero failed:");
+                return (void *)-1;
+            }
+            shmaddr = (void *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+            close(fd);
+        }
+        /* 
+         * Otherwise we do a normal filesystem mmap
+         */
+        else {
+            fd = mkstemp(file_mask);
+            if(fd == -1) {
+                apc_eprint("apc_mmap: mkstemp on %s failed:", file_mask);
+                return (void *)-1;
+            }
+            if (ftruncate(fd, size) < 0) {
+                close(fd);
+                unlink(file_mask);
+                apc_eprint("apc_mmap: ftruncate failed:");
+            }
+            shmaddr = (void *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_NOSYNC, fd, 0);
+            close(fd);
+            unlink(file_mask);
+        }
+    }
+    if((int)shmaddr == -1) {
+        apc_eprint("apc_mmap: mmap failed:");
+    }
+    return shmaddr;
+}
+
+void apc_unmap(void* shmaddr, size_t size)
+{
+    if (munmap(shmaddr, size) < 0) {
+        apc_wprint("apc_unmap: munmap failed:");
+    }
+}
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc.php php-5.2.5/ext/apc/apc.php
--- php-5.2.5-orig/ext/apc/apc.php      1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc.php   2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,1326 @@
+<?php
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Ralf Becker <beckerr@php.net>                               |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Ilia Alshanetsky <ilia@prohost.org>                         |
+  +----------------------------------------------------------------------+
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+$VERSION='$Id: apc.php,v 3.68 2007/07/22 00:25:48 gopalv Exp $';
+
+////////// READ OPTIONAL CONFIGURATION FILE ////////////
+if (file_exists("apc.conf.php")) include("apc.conf.php");
+////////////////////////////////////////////////////////
+
+////////// BEGIN OF DEFAULT CONFIG AREA ///////////////////////////////////////////////////////////
+
+defaults('USE_AUTHENTICATION',1);                      // Use (internal) authentication - best choice if 
+                                                                                       // no other authentication is available
+                                                                                       // If set to 0:
+                                                                                       //  There will be no further authentication. You 
+                                                                                       //  will have to handle this by yourself!
+                                                                                       // If set to 1:
+                                                                                       //  You need to change ADMIN_PASSWORD to make
+                                                                                       //  this work!
+defaults('ADMIN_USERNAME','apc');                      // Admin Username
+defaults('ADMIN_PASSWORD','password');         // Admin Password - CHANGE THIS TO ENABLE!!!
+
+// (beckerr) I'm using a clear text password here, because I've no good idea how to let 
+//           users generate a md5 or crypt password in a easy way to fill it in above
+
+//defaults('DATE_FORMAT', "d.m.Y H:i:s");      // German
+defaults('DATE_FORMAT', 'Y/m/d H:i:s');        // US
+
+defaults('GRAPH_SIZE',200);                                    // Image size
+
+////////// END OF DEFAULT CONFIG AREA /////////////////////////////////////////////////////////////
+
+
+// "define if not defined"
+function defaults($d,$v) {
+       if (!defined($d)) define($d,$v); // or just @define(...)
+}
+
+// rewrite $PHP_SELF to block XSS attacks
+//
+$PHP_SELF= isset($_SERVER['PHP_SELF']) ? htmlentities(strip_tags($_SERVER['PHP_SELF'],''), ENT_QUOTES) : '';
+$time = time();
+$host = getenv('HOSTNAME');
+if($host) { $host = '('.$host.')'; }
+
+// operation constants
+define('OB_HOST_STATS',1);
+define('OB_SYS_CACHE',2);
+define('OB_USER_CACHE',3);
+define('OB_SYS_CACHE_DIR',4);
+define('OB_VERSION_CHECK',9);
+
+// check validity of input variables
+$vardom=array(
+       'OB'    => '/^\d+$/',                   // operational mode switch
+       'CC'    => '/^[01]$/',                  // clear cache requested
+       'DU'    => '/^.*$/',                    // Delete User Key
+       'SH'    => '/^[a-z0-9]+$/',             // shared object description
+
+       'IMG'   => '/^[123]$/',                 // image to generate
+       'LO'    => '/^1$/',                             // login requested
+
+       'COUNT' => '/^\d+$/',                   // number of line displayed in list
+       'SCOPE' => '/^[AD]$/',                  // list view scope
+       'SORT1' => '/^[AHSMCDTZ]$/',    // first sort key
+       'SORT2' => '/^[DA]$/',                  // second sort key
+       'AGGR'  => '/^\d+$/',                   // aggregation by dir level
+       'SEARCH'        => '~^[a-zA-Z0-1/_.-]*$~'                       // aggregation by dir level
+);
+
+// default cache mode
+$cache_mode='opcode';
+
+// cache scope
+$scope_list=array(
+       'A' => 'cache_list',
+       'D' => 'deleted_list'
+);
+
+// handle POST and GET requests
+if (empty($_REQUEST)) {
+       if (!empty($_GET) && !empty($_POST)) {
+               $_REQUEST = array_merge($_GET, $_POST);
+       } else if (!empty($_GET)) {
+               $_REQUEST = $_GET;
+       } else if (!empty($_POST)) {
+               $_REQUEST = $_POST;
+       } else {
+               $_REQUEST = array();
+       }
+}
+
+// check parameter syntax
+foreach($vardom as $var => $dom) {
+       if (!isset($_REQUEST[$var])) {
+               $MYREQUEST[$var]=NULL;
+       } else if (!is_array($_REQUEST[$var]) && preg_match($dom.'D',$_REQUEST[$var])) {
+               $MYREQUEST[$var]=$_REQUEST[$var];
+       } else {
+               $MYREQUEST[$var]=$_REQUEST[$var]=NULL;
+       }
+}
+
+// check parameter sematics
+if (empty($MYREQUEST['SCOPE'])) $MYREQUEST['SCOPE']="A";
+if (empty($MYREQUEST['SORT1'])) $MYREQUEST['SORT1']="H";
+if (empty($MYREQUEST['SORT2'])) $MYREQUEST['SORT2']="D";
+if (empty($MYREQUEST['OB']))   $MYREQUEST['OB']=OB_HOST_STATS;
+if (!isset($MYREQUEST['COUNT'])) $MYREQUEST['COUNT']=20;
+if (!isset($scope_list[$MYREQUEST['SCOPE']])) $MYREQUEST['SCOPE']='A';
+
+$MY_SELF=
+       "$PHP_SELF".
+       "?SCOPE=".$MYREQUEST['SCOPE'].
+       "&SORT1=".$MYREQUEST['SORT1'].
+       "&SORT2=".$MYREQUEST['SORT2'].
+       "&COUNT=".$MYREQUEST['COUNT'];
+$MY_SELF_WO_SORT=
+       "$PHP_SELF".
+       "?SCOPE=".$MYREQUEST['SCOPE'].
+       "&COUNT=".$MYREQUEST['COUNT'];
+
+// authentication needed?
+//
+if (!USE_AUTHENTICATION) {
+       $AUTHENTICATED=1;
+} else {
+       $AUTHENTICATED=0;
+       if (ADMIN_PASSWORD!='password' && ($MYREQUEST['LO'] == 1 || isset($_SERVER['PHP_AUTH_USER']))) {
+
+               if (!isset($_SERVER['PHP_AUTH_USER']) ||
+                       !isset($_SERVER['PHP_AUTH_PW']) ||
+                       $_SERVER['PHP_AUTH_USER'] != ADMIN_USERNAME ||
+                       $_SERVER['PHP_AUTH_PW'] != ADMIN_PASSWORD) {
+                       Header("WWW-Authenticate: Basic realm=\"APC Login\"");
+                       Header("HTTP/1.0 401 Unauthorized");
+
+                       echo <<<EOB
+                               <html><body>
+                               <h1>Rejected!</h1>
+                               <big>Wrong Username or Password!</big><br/>&nbsp;<br/>&nbsp;
+                               <big><a href='$PHP_SELF?OB={$MYREQUEST['OB']}'>Continue...</a></big>
+                               </body></html>
+EOB;
+                       exit;
+                       
+               } else {
+                       $AUTHENTICATED=1;
+               }
+       }
+}
+       
+// select cache mode
+if ($AUTHENTICATED && $MYREQUEST['OB'] == OB_USER_CACHE) {
+       $cache_mode='user';
+}
+// clear cache
+if ($AUTHENTICATED && isset($MYREQUEST['CC']) && $MYREQUEST['CC']) {
+       apc_clear_cache($cache_mode);
+}
+
+if ($AUTHENTICATED && !empty($MYREQUEST['DU'])) {
+       apc_delete($MYREQUEST['DU']);
+}
+
+if(!function_exists('apc_cache_info') || !($cache=@apc_cache_info($cache_mode))) {
+       echo "No cache info available.  APC does not appear to be running.";
+  exit;
+}
+
+$cache_user = apc_cache_info('user', 1);  
+$mem=apc_sma_info();
+if(!$cache['num_hits']) { $cache['num_hits']=1; $time++; }  // Avoid division by 0 errors on a cache clear
+
+// don't cache this page
+//
+header("Cache-Control: no-store, no-cache, must-revalidate");  // HTTP/1.1
+header("Cache-Control: post-check=0, pre-check=0", false);
+header("Pragma: no-cache");                                    // HTTP/1.0
+
+function duration($ts) {
+    global $time;
+    $years = (int)((($time - $ts)/(7*86400))/52.177457);
+    $rem = (int)(($time-$ts)-($years * 52.177457 * 7 * 86400));
+    $weeks = (int)(($rem)/(7*86400));
+    $days = (int)(($rem)/86400) - $weeks*7;
+    $hours = (int)(($rem)/3600) - $days*24 - $weeks*7*24;
+    $mins = (int)(($rem)/60) - $hours*60 - $days*24*60 - $weeks*7*24*60;
+    $str = '';
+    if($years==1) $str .= "$years year, ";
+    if($years>1) $str .= "$years years, ";
+    if($weeks==1) $str .= "$weeks week, ";
+    if($weeks>1) $str .= "$weeks weeks, ";
+    if($days==1) $str .= "$days day,";
+    if($days>1) $str .= "$days days,";
+    if($hours == 1) $str .= " $hours hour and";
+    if($hours>1) $str .= " $hours hours and";
+    if($mins == 1) $str .= " 1 minute";
+    else $str .= " $mins minutes";
+    return $str;
+}
+
+// create graphics
+//
+function graphics_avail() {
+       return extension_loaded('gd');
+}
+if (isset($MYREQUEST['IMG']))
+{
+       if (!graphics_avail()) {
+               exit(0);
+       }
+
+       function fill_arc($im, $centerX, $centerY, $diameter, $start, $end, $color1,$color2,$text='',$placeindex=0) {
+               $r=$diameter/2;
+               $w=deg2rad((360+$start+($end-$start)/2)%360);
+
+               
+               if (function_exists("imagefilledarc")) {
+                       // exists only if GD 2.0.1 is avaliable
+                       imagefilledarc($im, $centerX+1, $centerY+1, $diameter, $diameter, $start, $end, $color1, IMG_ARC_PIE);
+                       imagefilledarc($im, $centerX, $centerY, $diameter, $diameter, $start, $end, $color2, IMG_ARC_PIE);
+                       imagefilledarc($im, $centerX, $centerY, $diameter, $diameter, $start, $end, $color1, IMG_ARC_NOFILL|IMG_ARC_EDGED);
+               } else {
+                       imagearc($im, $centerX, $centerY, $diameter, $diameter, $start, $end, $color2);
+                       imageline($im, $centerX, $centerY, $centerX + cos(deg2rad($start)) * $r, $centerY + sin(deg2rad($start)) * $r, $color2);
+                       imageline($im, $centerX, $centerY, $centerX + cos(deg2rad($start+1)) * $r, $centerY + sin(deg2rad($start)) * $r, $color2);
+                       imageline($im, $centerX, $centerY, $centerX + cos(deg2rad($end-1))   * $r, $centerY + sin(deg2rad($end))   * $r, $color2);
+                       imageline($im, $centerX, $centerY, $centerX + cos(deg2rad($end))   * $r, $centerY + sin(deg2rad($end))   * $r, $color2);
+                       imagefill($im,$centerX + $r*cos($w)/2, $centerY + $r*sin($w)/2, $color2);
+               }
+               if ($text) {
+                       if ($placeindex>0) {
+                               imageline($im,$centerX + $r*cos($w)/2, $centerY + $r*sin($w)/2,$diameter, $placeindex*12,$color1);
+                               imagestring($im,4,$diameter, $placeindex*12,$text,$color1);     
+                               
+                       } else {
+                               imagestring($im,4,$centerX + $r*cos($w)/2, $centerY + $r*sin($w)/2,$text,$color1);
+                       }
+               }
+       } 
+
+       function text_arc($im, $centerX, $centerY, $diameter, $start, $end, $color1,$text,$placeindex=0) {
+               $r=$diameter/2;
+               $w=deg2rad((360+$start+($end-$start)/2)%360);
+
+               if ($placeindex>0) {
+                       imageline($im,$centerX + $r*cos($w)/2, $centerY + $r*sin($w)/2,$diameter, $placeindex*12,$color1);
+                       imagestring($im,4,$diameter, $placeindex*12,$text,$color1);     
+                               
+               } else {
+                       imagestring($im,4,$centerX + $r*cos($w)/2, $centerY + $r*sin($w)/2,$text,$color1);
+               }
+       } 
+       
+       function fill_box($im, $x, $y, $w, $h, $color1, $color2,$text='',$placeindex='') {
+               global $col_black;
+               $x1=$x+$w-1;
+               $y1=$y+$h-1;
+
+               imagerectangle($im, $x, $y1, $x1+1, $y+1, $col_black);
+               if($y1>$y) imagefilledrectangle($im, $x, $y, $x1, $y1, $color2);
+               else imagefilledrectangle($im, $x, $y1, $x1, $y, $color2);
+               imagerectangle($im, $x, $y1, $x1, $y, $color1);
+               if ($text) {
+                       if ($placeindex>0) {
+                       
+                               if ($placeindex<16)
+                               {
+                                       $px=5;
+                                       $py=$placeindex*12+6;
+                                       imagefilledrectangle($im, $px+90, $py+3, $px+90-4, $py-3, $color2);
+                                       imageline($im,$x,$y+$h/2,$px+90,$py,$color2);
+                                       imagestring($im,2,$px,$py-6,$text,$color1);     
+                                       
+                               } else {
+                                       if ($placeindex<31) {
+                                               $px=$x+40*2;
+                                               $py=($placeindex-15)*12+6;
+                                       } else {
+                                               $px=$x+40*2+100*intval(($placeindex-15)/15);
+                                               $py=($placeindex%15)*12+6;
+                                       }
+                                       imagefilledrectangle($im, $px, $py+3, $px-4, $py-3, $color2);
+                                       imageline($im,$x+$w,$y+$h/2,$px,$py,$color2);
+                                       imagestring($im,2,$px+2,$py-6,$text,$color1);   
+                               }
+                       } else {
+                               imagestring($im,4,$x+5,$y1-16,$text,$color1);
+                       }
+               }
+       }
+
+
+       $size = GRAPH_SIZE; // image size
+       if ($MYREQUEST['IMG']==3)
+               $image = imagecreate(2*$size+150, $size+10);
+       else
+               $image = imagecreate($size+50, $size+10);
+
+       $col_white = imagecolorallocate($image, 0xFF, 0xFF, 0xFF);
+       $col_red   = imagecolorallocate($image, 0xD0, 0x60,  0x30);
+       $col_green = imagecolorallocate($image, 0x60, 0xF0, 0x60);
+       $col_black = imagecolorallocate($image,   0,   0,   0);
+       imagecolortransparent($image,$col_white);
+
+       switch ($MYREQUEST['IMG']) {
+       
+       case 1:
+               $s=$mem['num_seg']*$mem['seg_size'];
+               $a=$mem['avail_mem'];
+               $x=$y=$size/2;
+               $fuzz = 0.000001;
+
+               // This block of code creates the pie chart.  It is a lot more complex than you
+               // would expect because we try to visualize any memory fragmentation as well.
+               $angle_from = 0;
+               $string_placement=array();
+               for($i=0; $i<$mem['num_seg']; $i++) {   
+                       $ptr = 0;
+                       $free = $mem['block_lists'][$i];
+                       foreach($free as $block) {
+                               if($block['offset']!=$ptr) {       // Used block
+                                       $angle_to = $angle_from+($block['offset']-$ptr)/$s;
+                                       if(($angle_to+$fuzz)>1) $angle_to = 1;
+                                       fill_arc($image,$x,$y,$size,$angle_from*360,$angle_to*360,$col_black,$col_red);
+                                       if (($angle_to-$angle_from)>0.05) {
+                                               array_push($string_placement, array($angle_from,$angle_to));
+                                       }
+                                       $angle_from = $angle_to;
+                               }
+                               $angle_to = $angle_from+($block['size'])/$s;
+                               if(($angle_to+$fuzz)>1) $angle_to = 1;
+                               fill_arc($image,$x,$y,$size,$angle_from*360,$angle_to*360,$col_black,$col_green);
+                               if (($angle_to-$angle_from)>0.05) {
+                                       array_push($string_placement, array($angle_from,$angle_to));
+                               }
+                               $angle_from = $angle_to;
+                               $ptr = $block['offset']+$block['size'];
+                       }
+                       if ($ptr < $mem['seg_size']) { // memory at the end 
+                               $angle_to = $angle_from + ($mem['seg_size'] - $ptr)/$s;
+                               if(($angle_to+$fuzz)>1) $angle_to = 1;
+                               fill_arc($image,$x,$y,$size,$angle_from*360,$angle_to*360,$col_black,$col_red);
+                               if (($angle_to-$angle_from)>0.05) {
+                                       array_push($string_placement, array($angle_from,$angle_to));
+                               }
+                       }
+               }
+               foreach ($string_placement as $angle) {
+                       text_arc($image,$x,$y,$size,$angle[0]*360,$angle[1]*360,$col_black,bsize($s*($angle[1]-$angle[0])));
+               }
+               break;
+               
+       case 2: 
+               $s=$cache['num_hits']+$cache['num_misses'];
+               $a=$cache['num_hits'];
+               
+               fill_box($image, 30,$size,50,-$a*($size-21)/$s,$col_black,$col_green,sprintf("%.1f%%",$cache['num_hits']*100/$s));
+               fill_box($image,130,$size,50,-max(4,($s-$a)*($size-21)/$s),$col_black,$col_red,sprintf("%.1f%%",$cache['num_misses']*100/$s));
+               break;
+               
+       case 3:
+               $s=$mem['num_seg']*$mem['seg_size'];
+               $a=$mem['avail_mem'];
+               $x=130;
+               $y=1;
+               $j=1;
+
+               // This block of code creates the bar chart.  It is a lot more complex than you
+               // would expect because we try to visualize any memory fragmentation as well.
+               for($i=0; $i<$mem['num_seg']; $i++) {   
+                       $ptr = 0;
+                       $free = $mem['block_lists'][$i];
+                       foreach($free as $block) {
+                               if($block['offset']!=$ptr) {       // Used block
+                                       $h=(GRAPH_SIZE-5)*($block['offset']-$ptr)/$s;
+                                       if ($h>0) {
+                                                $j++;
+                                               if($j<75) fill_box($image,$x,$y,50,$h,$col_black,$col_red,bsize($block['offset']-$ptr),$j);
+                                                else fill_box($image,$x,$y,50,$h,$col_black,$col_red);
+                                        }
+                                       $y+=$h;
+                               }
+                               $h=(GRAPH_SIZE-5)*($block['size'])/$s;
+                               if ($h>0) {
+                                        $j++;
+                                       if($j<75) fill_box($image,$x,$y,50,$h,$col_black,$col_green,bsize($block['size']),$j);
+                                       else fill_box($image,$x,$y,50,$h,$col_black,$col_green);
+                                }
+                               $y+=$h;
+                               $ptr = $block['offset']+$block['size'];
+                       }
+                       if ($ptr < $mem['seg_size']) { // memory at the end 
+                               $h = (GRAPH_SIZE-5) * ($mem['seg_size'] - $ptr) / $s;
+                               if ($h > 0) {
+                                       fill_box($image,$x,$y,50,$h,$col_black,$col_red,bsize($mem['seg_size']-$ptr),$j++);
+                               }
+                       }
+               }
+               break;
+       case 4: 
+               $s=$cache['num_hits']+$cache['num_misses'];
+               $a=$cache['num_hits'];
+                       
+               fill_box($image, 30,$size,50,-$a*($size-21)/$s,$col_black,$col_green,sprintf("%.1f%%",$cache['num_hits']*100/$s));
+               fill_box($image,130,$size,50,-max(4,($s-$a)*($size-21)/$s),$col_black,$col_red,sprintf("%.1f%%",$cache['num_misses']*100/$s));
+               break;
+       
+       }
+       header("Content-type: image/png");
+       imagepng($image);
+       exit;
+}
+
+// pretty printer for byte values
+//
+function bsize($s) {
+       foreach (array('','K','M','G') as $i => $k) {
+               if ($s < 1024) break;
+               $s/=1024;
+       }
+       return sprintf("%5.1f %sBytes",$s,$k);
+}
+
+// sortable table header in "scripts for this host" view
+function sortheader($key,$name,$extra='') {
+       global $MYREQUEST, $MY_SELF_WO_SORT;
+       
+       if ($MYREQUEST['SORT1']==$key) {
+               $MYREQUEST['SORT2'] = $MYREQUEST['SORT2']=='A' ? 'D' : 'A';
+       }
+       return "<a class=sortable href=\"$MY_SELF_WO_SORT$extra&SORT1=$key&SORT2=".$MYREQUEST['SORT2']."\">$name</a>";
+
+}
+
+// create menu entry 
+function menu_entry($ob,$title) {
+       global $MYREQUEST,$MY_SELF;
+       if ($MYREQUEST['OB']!=$ob) {
+               return "<li><a href=\"$MY_SELF&OB=$ob\">$title</a></li>";
+       } else if (empty($MYREQUEST['SH'])) {
+               return "<li><span class=active>$title</span></li>";
+       } else {
+               return "<li><a class=\"child_active\" href=\"$MY_SELF&OB=$ob\">$title</a></li>";        
+       }
+}
+
+function put_login_link($s="Login")
+{
+       global $MY_SELF,$MYREQUEST,$AUTHENTICATED;
+       // needs ADMIN_PASSWORD to be changed!
+       //
+       if (!USE_AUTHENTICATION) {
+               return;
+       } else if (ADMIN_PASSWORD=='password')
+       {
+               print <<<EOB
+                       <a href="#" onClick="javascript:alert('You need to set a password at the top of apc.php before this will work!');return false";>$s</a>
+EOB;
+       } else if ($AUTHENTICATED) {
+               print <<<EOB
+                       '{$_SERVER['PHP_AUTH_USER']}'&nbsp;logged&nbsp;in!
+EOB;
+       } else{
+               print <<<EOB
+                       <a href="$MY_SELF&LO=1&OB={$MYREQUEST['OB']}">$s</a>
+EOB;
+       }
+}
+
+
+?>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+<head><title>APC INFO <?php echo $host ?></title>
+<style><!--
+body { background:white; font-size:100.01%; margin:0; padding:0; }
+body,p,td,th,input,submit { font-size:0.8em;font-family:arial,helvetica,sans-serif; }
+* html body   {font-size:0.8em}
+* html p      {font-size:0.8em}
+* html td     {font-size:0.8em}
+* html th     {font-size:0.8em}
+* html input  {font-size:0.8em}
+* html submit {font-size:0.8em}
+td { vertical-align:top }
+a { color:black; font-weight:none; text-decoration:none; }
+a:hover { text-decoration:underline; }
+div.content { padding:1em 1em 1em 1em; position:absolute; width:97%; z-index:100; }
+
+
+div.head div.login {
+       position:absolute;
+       right: 1em;
+       top: 1.2em;
+       color:white;
+       width:6em;
+       }
+div.head div.login a {
+       position:absolute;
+       right: 0em;
+       background:rgb(119,123,180);
+       border:solid rgb(102,102,153) 2px;
+       color:white;
+       font-weight:bold;
+       padding:0.1em 0.5em 0.1em 0.5em;
+       text-decoration:none;
+       }
+div.head div.login a:hover {
+       background:rgb(193,193,244);
+       }
+
+h1.apc { background:rgb(153,153,204); margin:0; padding:0.5em 1em 0.5em 1em; }
+* html h1.apc { margin-bottom:-7px; }
+h1.apc a:hover { text-decoration:none; color:rgb(90,90,90); }
+h1.apc div.logo span.logo {
+       background:rgb(119,123,180);
+       color:black;
+       border-right: solid black 1px;
+       border-bottom: solid black 1px;
+       font-style:italic;
+       font-size:1em;
+       padding-left:1.2em;
+       padding-right:1.2em;
+       text-align:right;
+       }
+h1.apc div.logo span.name { color:white; font-size:0.7em; padding:0 0.8em 0 2em; }
+h1.apc div.nameinfo { color:white; display:inline; font-size:0.4em; margin-left: 3em; }
+h1.apc div.copy { color:black; font-size:0.4em; position:absolute; right:1em; }
+hr.apc {
+       background:white;
+       border-bottom:solid rgb(102,102,153) 1px;
+       border-style:none;
+       border-top:solid rgb(102,102,153) 10px;
+       height:12px;
+       margin:0;
+       margin-top:1px;
+       padding:0;
+}
+
+ol,menu { margin:1em 0 0 0; padding:0.2em; margin-left:1em;}
+ol.menu li { display:inline; margin-right:0.7em; list-style:none; font-size:85%}
+ol.menu a {
+       background:rgb(153,153,204);
+       border:solid rgb(102,102,153) 2px;
+       color:white;
+       font-weight:bold;
+       margin-right:0em;
+       padding:0.1em 0.5em 0.1em 0.5em;
+       text-decoration:none;
+       margin-left: 5px;
+       }
+ol.menu a.child_active {
+       background:rgb(153,153,204);
+       border:solid rgb(102,102,153) 2px;
+       color:white;
+       font-weight:bold;
+       margin-right:0em;
+       padding:0.1em 0.5em 0.1em 0.5em;
+       text-decoration:none;
+       border-left: solid black 5px;
+       margin-left: 0px;
+       }
+ol.menu span.active {
+       background:rgb(153,153,204);
+       border:solid rgb(102,102,153) 2px;
+       color:black;
+       font-weight:bold;
+       margin-right:0em;
+       padding:0.1em 0.5em 0.1em 0.5em;
+       text-decoration:none;
+       border-left: solid black 5px;
+       }
+ol.menu span.inactive {
+       background:rgb(193,193,244);
+       border:solid rgb(182,182,233) 2px;
+       color:white;
+       font-weight:bold;
+       margin-right:0em;
+       padding:0.1em 0.5em 0.1em 0.5em;
+       text-decoration:none;
+       margin-left: 5px;
+       }
+ol.menu a:hover {
+       background:rgb(193,193,244);
+       text-decoration:none;
+       }
+       
+       
+div.info {
+       background:rgb(204,204,204);
+       border:solid rgb(204,204,204) 1px;
+       margin-bottom:1em;
+       }
+div.info h2 {
+       background:rgb(204,204,204);
+       color:black;
+       font-size:1em;
+       margin:0;
+       padding:0.1em 1em 0.1em 1em;
+       }
+div.info table {
+       border:solid rgb(204,204,204) 1px;
+       border-spacing:0;
+       width:100%;
+       }
+div.info table th {
+       background:rgb(204,204,204);
+       color:white;
+       margin:0;
+       padding:0.1em 1em 0.1em 1em;
+       }
+div.info table th a.sortable { color:black; }
+div.info table tr.tr-0 { background:rgb(238,238,238); }
+div.info table tr.tr-1 { background:rgb(221,221,221); }
+div.info table td { padding:0.3em 1em 0.3em 1em; }
+div.info table td.td-0 { border-right:solid rgb(102,102,153) 1px; white-space:nowrap; }
+div.info table td.td-n { border-right:solid rgb(102,102,153) 1px; }
+div.info table td h3 {
+       color:black;
+       font-size:1.1em;
+       margin-left:-0.3em;
+       }
+
+div.graph { margin-bottom:1em }
+div.graph h2 { background:rgb(204,204,204);; color:black; font-size:1em; margin:0; padding:0.1em 1em 0.1em 1em; }
+div.graph table { border:solid rgb(204,204,204) 1px; color:black; font-weight:normal; width:100%; }
+div.graph table td.td-0 { background:rgb(238,238,238); }
+div.graph table td.td-1 { background:rgb(221,221,221); }
+div.graph table td { padding:0.2em 1em 0.4em 1em; }
+
+div.div1,div.div2 { margin-bottom:1em; width:35em; }
+div.div3 { position:absolute; left:40em; top:1em; width:580px; }
+//div.div3 { position:absolute; left:37em; top:1em; right:1em; }
+
+div.sorting { margin:1.5em 0em 1.5em 2em }
+.center { text-align:center }
+.aright { position:absolute;right:1em }
+.right { text-align:right }
+.ok { color:rgb(0,200,0); font-weight:bold}
+.failed { color:rgb(200,0,0); font-weight:bold}
+
+span.box {
+       border: black solid 1px;
+       border-right:solid black 2px;
+       border-bottom:solid black 2px;
+       padding:0 0.5em 0 0.5em;
+       margin-right:1em;
+}
+span.green { background:#60F060; padding:0 0.5em 0 0.5em}
+span.red { background:#D06030; padding:0 0.5em 0 0.5em }
+
+div.authneeded {
+       background:rgb(238,238,238);
+       border:solid rgb(204,204,204) 1px;
+       color:rgb(200,0,0);
+       font-size:1.2em;
+       font-weight:bold;
+       padding:2em;
+       text-align:center;
+       }
+       
+input {
+       background:rgb(153,153,204);
+       border:solid rgb(102,102,153) 2px;
+       color:white;
+       font-weight:bold;
+       margin-right:1em;
+       padding:0.1em 0.5em 0.1em 0.5em;
+       }
+//-->
+</style>
+</head>
+<body>
+<div class="head">
+       <h1 class="apc">
+               <div class="logo"><span class="logo"><a href="http://pecl.php.net/package/APC">APC</a></span></div>
+               <div class="nameinfo">Opcode Cache</div>
+       </h1>
+       <div class="login">
+       <?php put_login_link(); ?>
+       </div>
+       <hr class="apc">
+</div>
+<?php
+
+
+// Display main Menu
+echo <<<EOB
+       <ol class=menu>
+       <li><a href="$MY_SELF&OB={$MYREQUEST['OB']}&SH={$MYREQUEST['SH']}">Refresh Data</a></li>
+EOB;
+echo
+       menu_entry(1,'View Host Stats'),
+       menu_entry(2,'System Cache Entries');
+if ($AUTHENTICATED) {
+       echo menu_entry(4,'Per-Directory Entries');
+}
+echo
+       menu_entry(3,'User Cache Entries'),
+       menu_entry(9,'Version Check');
+       
+if ($AUTHENTICATED) {
+       echo <<<EOB
+               <li><a class="aright" href="$MY_SELF&CC=1&OB={$MYREQUEST['OB']}" onClick="javascipt:return confirm('Are you sure?');">Clear $cache_mode Cache</a></li>
+EOB;
+}
+echo <<<EOB
+       </ol>
+EOB;
+
+
+// CONTENT
+echo <<<EOB
+       <div class=content>
+EOB;
+
+// MAIN SWITCH STATEMENT 
+
+switch ($MYREQUEST['OB']) {
+
+
+
+
+
+// -----------------------------------------------
+// Host Stats
+// -----------------------------------------------
+case OB_HOST_STATS:
+       $mem_size = $mem['num_seg']*$mem['seg_size'];
+       $mem_avail= $mem['avail_mem'];
+       $mem_used = $mem_size-$mem_avail;
+       $seg_size = bsize($mem['seg_size']);
+       $req_rate = sprintf("%.2f",($cache['num_hits']+$cache['num_misses'])/($time-$cache['start_time']));
+       $hit_rate = sprintf("%.2f",($cache['num_hits'])/($time-$cache['start_time']));
+       $miss_rate = sprintf("%.2f",($cache['num_misses'])/($time-$cache['start_time']));
+       $insert_rate = sprintf("%.2f",($cache['num_inserts'])/($time-$cache['start_time']));
+       $req_rate_user = sprintf("%.2f",($cache_user['num_hits']+$cache_user['num_misses'])/($time-$cache_user['start_time']));
+       $hit_rate_user = sprintf("%.2f",($cache_user['num_hits'])/($time-$cache_user['start_time']));
+       $miss_rate_user = sprintf("%.2f",($cache_user['num_misses'])/($time-$cache_user['start_time']));
+       $insert_rate_user = sprintf("%.2f",($cache_user['num_inserts'])/($time-$cache_user['start_time']));
+       $apcversion = phpversion('apc');
+       $phpversion = phpversion();
+       $number_files = $cache['num_entries']; 
+    $size_files = bsize($cache['mem_size']);
+       $number_vars = $cache_user['num_entries'];
+    $size_vars = bsize($cache_user['mem_size']);
+       $i=0;
+       echo <<< EOB
+               <div class="info div1"><h2>General Cache Information</h2>
+               <table cellspacing=0><tbody>
+               <tr class=tr-0><td class=td-0>APC Version</td><td>$apcversion</td></tr>
+               <tr class=tr-1><td class=td-0>PHP Version</td><td>$phpversion</td></tr>
+EOB;
+
+       if(!empty($_SERVER['SERVER_NAME']))
+               echo "<tr class=tr-0><td class=td-0>APC Host</td><td>{$_SERVER['SERVER_NAME']} $host</td></tr>\n";
+       if(!empty($_SERVER['SERVER_SOFTWARE']))
+               echo "<tr class=tr-1><td class=td-0>Server Software</td><td>{$_SERVER['SERVER_SOFTWARE']}</td></tr>\n";
+
+       echo <<<EOB
+               <tr class=tr-0><td class=td-0>Shared Memory</td><td>{$mem['num_seg']} Segment(s) with $seg_size 
+    <br/> ({$cache['memory_type']} memory, {$cache['locking_type']} locking)
+    </td></tr>
+EOB;
+       echo   '<tr class=tr-1><td class=td-0>Start Time</td><td>',date(DATE_FORMAT,$cache['start_time']),'</td></tr>';
+       echo   '<tr class=tr-0><td class=td-0>Uptime</td><td>',duration($cache['start_time']),'</td></tr>';
+       echo   '<tr class=tr-1><td class=td-0>File Upload Support</td><td>',$cache['file_upload_progress'],'</td></tr>';
+       echo <<<EOB
+               </tbody></table>
+               </div>
+
+               <div class="info div1"><h2>File Cache Information</h2>
+               <table cellspacing=0><tbody>
+               <tr class=tr-0><td class=td-0>Cached Files</td><td>$number_files ($size_files)</td></tr>
+               <tr class=tr-1><td class=td-0>Hits</td><td>{$cache['num_hits']}</td></tr>
+               <tr class=tr-0><td class=td-0>Misses</td><td>{$cache['num_misses']}</td></tr>
+               <tr class=tr-1><td class=td-0>Request Rate (hits, misses)</td><td>$req_rate cache requests/second</td></tr>
+               <tr class=tr-0><td class=td-0>Hit Rate</td><td>$hit_rate cache requests/second</td></tr>
+               <tr class=tr-1><td class=td-0>Miss Rate</td><td>$miss_rate cache requests/second</td></tr>
+               <tr class=tr-0><td class=td-0>Insert Rate</td><td>$insert_rate cache requests/second</td></tr>
+               <tr class=tr-1><td class=td-0>Cache full count</td><td>{$cache['expunges']}</td></tr>
+               </tbody></table>
+               </div>
+
+               <div class="info div1"><h2>User Cache Information</h2>
+               <table cellspacing=0><tbody>
+    <tr class=tr-0><td class=td-0>Cached Variables</td><td>$number_vars ($size_vars)</td></tr>
+               <tr class=tr-1><td class=td-0>Hits</td><td>{$cache_user['num_hits']}</td></tr>
+               <tr class=tr-0><td class=td-0>Misses</td><td>{$cache_user['num_misses']}</td></tr>
+               <tr class=tr-1><td class=td-0>Request Rate (hits, misses)</td><td>$req_rate_user cache requests/second</td></tr>
+               <tr class=tr-0><td class=td-0>Hit Rate</td><td>$hit_rate_user cache requests/second</td></tr>
+               <tr class=tr-1><td class=td-0>Miss Rate</td><td>$miss_rate_user cache requests/second</td></tr>
+               <tr class=tr-0><td class=td-0>Insert Rate</td><td>$insert_rate_user cache requests/second</td></tr>
+               <tr class=tr-1><td class=td-0>Cache full count</td><td>{$cache_user['expunges']}</td></tr>
+
+               </tbody></table>
+               </div>
+
+               <div class="info div2"><h2>Runtime Settings</h2><table cellspacing=0><tbody>
+EOB;
+
+       $j = 0;
+       foreach (ini_get_all('apc') as $k => $v) {
+               echo "<tr class=tr-$j><td class=td-0>",$k,"</td><td>",str_replace(',',',<br />',$v['local_value']),"</td></tr>\n";
+               $j = 1 - $j;
+       }
+
+       if($mem['num_seg']>1 || $mem['num_seg']==1 && count($mem['block_lists'][0])>1)
+               $mem_note = "Memory Usage<br /><font size=-2>(multiple slices indicate fragments)</font>";
+       else
+               $mem_note = "Memory Usage";
+
+       echo <<< EOB
+               </tbody></table>
+               </div>
+
+               <div class="graph div3"><h2>Host Status Diagrams</h2>
+               <table cellspacing=0><tbody>
+EOB;
+       $size='width='.(GRAPH_SIZE+50).' height='.(GRAPH_SIZE+10);
+       echo <<<EOB
+               <tr>
+               <td class=td-0>$mem_note</td>
+               <td class=td-1>Hits &amp; Misses</td>
+               </tr>
+EOB;
+
+       echo
+               graphics_avail() ? 
+                         '<tr>'.
+                         "<td class=td-0><img alt=\"\" $size src=\"$PHP_SELF?IMG=1&$time\"></td>".
+                         "<td class=td-1><img alt=\"\" $size src=\"$PHP_SELF?IMG=2&$time\"></td></tr>\n"
+                       : "",
+               '<tr>',
+               '<td class=td-0><span class="green box">&nbsp;</span>Free: ',bsize($mem_avail).sprintf(" (%.1f%%)",$mem_avail*100/$mem_size),"</td>\n",
+               '<td class=td-1><span class="green box">&nbsp;</span>Hits: ',$cache['num_hits'].sprintf(" (%.1f%%)",$cache['num_hits']*100/($cache['num_hits']+$cache['num_misses'])),"</td>\n",
+               '</tr>',
+               '<tr>',
+               '<td class=td-0><span class="red box">&nbsp;</span>Used: ',bsize($mem_used ).sprintf(" (%.1f%%)",$mem_used *100/$mem_size),"</td>\n",
+               '<td class=td-1><span class="red box">&nbsp;</span>Misses: ',$cache['num_misses'].sprintf(" (%.1f%%)",$cache['num_misses']*100/($cache['num_hits']+$cache['num_misses'])),"</td>\n";
+       echo <<< EOB
+               </tr>
+               </tbody></table>
+
+               <br/>
+               <h2>Detailed Memory Usage and Fragmentation</h2>
+               <table cellspacing=0><tbody>
+               <tr>
+               <td class=td-0 colspan=2><br/>
+EOB;
+
+       // Fragementation: (freeseg - 1) / total_seg
+       $nseg = $freeseg = $fragsize = $freetotal = 0;
+       for($i=0; $i<$mem['num_seg']; $i++) {
+               $ptr = 0;
+               foreach($mem['block_lists'][$i] as $block) {
+                       if ($block['offset'] != $ptr) {
+                               ++$nseg;
+                       }
+                       $ptr = $block['offset'] + $block['size'];
+                        /* Only consider blocks <5M for the fragmentation % */
+                        if($block['size']<(5*1024*1024)) $fragsize+=$block['size'];
+                        $freetotal+=$block['size'];
+               }
+               $freeseg += count($mem['block_lists'][$i]);
+       }
+       
+       if ($freeseg > 1) {
+               $frag = sprintf("%.2f%% (%s out of %s in %d fragments)", ($fragsize/$freetotal)*100,bsize($fragsize),bsize($freetotal),$freeseg);
+       } else {
+               $frag = "0%";
+       }
+
+       if (graphics_avail()) {
+               $size='width='.(2*GRAPH_SIZE+150).' height='.(GRAPH_SIZE+10);
+               echo <<<EOB
+                       <img alt="" $size src="$PHP_SELF?IMG=3&$time">
+EOB;
+       }
+       echo <<<EOB
+               </br>Fragmentation: $frag
+               </td>
+               </tr>
+EOB;
+        if(isset($mem['adist'])) {
+          foreach($mem['adist'] as $i=>$v) {
+            $cur = pow(2,$i); $nxt = pow(2,$i+1)-1;
+            if($i==0) $range = "1";
+            else $range = "$cur - $nxt";
+            echo "<tr><th align=right>$range</th><td align=right>$v</td></tr>\n";
+          }
+        }
+        echo <<<EOB
+               </tbody></table>
+               </div>
+EOB;
+               
+       break;
+
+
+// -----------------------------------------------
+// User Cache Entries
+// -----------------------------------------------
+case OB_USER_CACHE:
+       if (!$AUTHENTICATED) {
+               echo '<div class="authneeded">You need to login to see the user values here!<br/>&nbsp;<br/>';
+               put_login_link("Login now!");
+               echo '</div>';
+               break;
+       }
+       $fieldname='info';
+       $fieldheading='User Entry Label';
+       $fieldkey='info';
+
+// -----------------------------------------------
+// System Cache Entries                
+// -----------------------------------------------
+case OB_SYS_CACHE:     
+       if (!isset($fieldname))
+       {
+               $fieldname='filename';
+               $fieldheading='Script Filename';
+               if(ini_get("apc.stat")) $fieldkey='inode';
+               else $fieldkey='filename'; 
+       }
+       if (!empty($MYREQUEST['SH']))
+       {
+               echo <<< EOB
+                       <div class="info"><table cellspacing=0><tbody>
+                       <tr><th>Attribute</th><th>Value</th></tr>
+EOB;
+
+               $m=0;
+               foreach($scope_list as $j => $list) {
+                       foreach($cache[$list] as $i => $entry) {
+                               if (md5($entry[$fieldkey])!=$MYREQUEST['SH']) continue;
+                               foreach($entry as $k => $value) {
+                                       if (!$AUTHENTICATED) {
+                                               // hide all path entries if not logged in
+                                               $value=preg_replace('/^.*(\\/|\\\\)/','<i>&lt;hidden&gt;</i>/',$value);
+                                       }
+
+                                       if ($k == "num_hits") {
+                                               $value=sprintf("%s (%.2f%%)",$value,$value*100/$cache['num_hits']);
+                                       }
+                                       if ($k == 'deletion_time') {
+                                               if(!$entry['deletion_time']) $value = "None";
+                                       }
+                                       echo
+                                               "<tr class=tr-$m>",
+                                               "<td class=td-0>",ucwords(preg_replace("/_/"," ",$k)),"</td>",
+                                               "<td class=td-last>",(preg_match("/time/",$k) && $value!='None') ? date(DATE_FORMAT,$value) : $value,"</td>",
+                                               "</tr>";
+                                       $m=1-$m;
+                               }
+                               if($fieldkey=='info') {
+                                       echo "<tr class=tr-$m><td class=td-0>Stored Value</td><td class=td-last><pre>";
+                                       $output = var_export(apc_fetch($entry[$fieldkey]),true);
+                                       echo htmlspecialchars($output);
+                                       echo "</pre></td></tr>\n";
+                               }
+                               break;
+                       }
+               }
+
+               echo <<<EOB
+                       </tbody></table>
+                       </div>
+EOB;
+               break;
+       }
+
+       $cols=6;
+       echo <<<EOB
+               <div class=sorting><form>Scope:
+               <input type=hidden name=OB value={$MYREQUEST['OB']}>
+               <select name=SCOPE>
+EOB;
+       echo 
+               "<option value=A",$MYREQUEST['SCOPE']=='A' ? " selected":"",">Active</option>",
+               "<option value=D",$MYREQUEST['SCOPE']=='D' ? " selected":"",">Deleted</option>",
+               "</select>",
+               ", Sorting:<select name=SORT1>",
+               "<option value=H",$MYREQUEST['SORT1']=='H' ? " selected":"",">Hits</option>",
+               "<option value=Z",$MYREQUEST['SORT1']=='Z' ? " selected":"",">Size</option>",
+               "<option value=S",$MYREQUEST['SORT1']=='S' ? " selected":"",">$fieldheading</option>",
+               "<option value=A",$MYREQUEST['SORT1']=='A' ? " selected":"",">Last accessed</option>",
+               "<option value=M",$MYREQUEST['SORT1']=='M' ? " selected":"",">Last modified</option>",
+               "<option value=C",$MYREQUEST['SORT1']=='C' ? " selected":"",">Created at</option>",
+               "<option value=D",$MYREQUEST['SORT1']=='D' ? " selected":"",">Deleted at</option>";
+       if($fieldname=='info') echo
+               "<option value=D",$MYREQUEST['SORT1']=='T' ? " selected":"",">Timeout</option>";
+       echo 
+               '</select>',
+               '<select name=SORT2>',
+               '<option value=D',$MYREQUEST['SORT2']=='D' ? ' selected':'','>DESC</option>',
+               '<option value=A',$MYREQUEST['SORT2']=='A' ? ' selected':'','>ASC</option>',
+               '</select>',
+               '<select name=COUNT onChange="form.submit()">',
+               '<option value=10 ',$MYREQUEST['COUNT']=='10' ? ' selected':'','>Top 10</option>',
+               '<option value=20 ',$MYREQUEST['COUNT']=='20' ? ' selected':'','>Top 20</option>',
+               '<option value=50 ',$MYREQUEST['COUNT']=='50' ? ' selected':'','>Top 50</option>',
+               '<option value=100',$MYREQUEST['COUNT']=='100'? ' selected':'','>Top 100</option>',
+               '<option value=150',$MYREQUEST['COUNT']=='150'? ' selected':'','>Top 150</option>',
+               '<option value=200',$MYREQUEST['COUNT']=='200'? ' selected':'','>Top 200</option>',
+               '<option value=500',$MYREQUEST['COUNT']=='500'? ' selected':'','>Top 500</option>',
+               '<option value=0  ',$MYREQUEST['COUNT']=='0'  ? ' selected':'','>All</option>',
+               '</select>',
+    '&nbsp; Search: <input name=SEARCH value="',$MYREQUEST['SEARCH'],'" type=text size=25/>',
+               '&nbsp;<input type=submit value="GO!">',
+               '</form></div>',
+
+               '<div class="info"><table cellspacing=0><tbody>',
+               '<tr>',
+               '<th>',sortheader('S',$fieldheading,  "&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('H','Hits',         "&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('Z','Size',         "&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('A','Last accessed',"&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('M','Last modified',"&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('C','Created at',   "&OB=".$MYREQUEST['OB']),'</th>';
+
+       if($fieldname=='info') {
+               $cols+=2;
+                echo '<th>',sortheader('T','Timeout',"&OB=".$MYREQUEST['OB']),'</th>';
+       }
+       echo '<th>',sortheader('D','Deleted at',"&OB=".$MYREQUEST['OB']),'</th></tr>';
+
+       // builds list with alpha numeric sortable keys
+       //
+       $list = array();
+       foreach($cache[$scope_list[$MYREQUEST['SCOPE']]] as $i => $entry) {
+               switch($MYREQUEST['SORT1']) {
+                       case 'A': $k=sprintf('%015d-',$entry['access_time']);   break;
+                       case 'H': $k=sprintf('%015d-',$entry['num_hits']);              break;
+                       case 'Z': $k=sprintf('%015d-',$entry['mem_size']);              break;
+                       case 'M': $k=sprintf('%015d-',$entry['mtime']);                 break;
+                       case 'C': $k=sprintf('%015d-',$entry['creation_time']); break;
+                       case 'T': $k=sprintf('%015d-',$entry['ttl']);                   break;
+                       case 'D': $k=sprintf('%015d-',$entry['deletion_time']); break;
+                       case 'S': $k='';                                                                                break;
+               }
+               if (!$AUTHENTICATED) {
+                       // hide all path entries if not logged in
+                       $list[$k.$entry[$fieldname]]=preg_replace('/^.*(\\/|\\\\)/','<i>&lt;hidden&gt;</i>/',$entry);
+               } else {
+                       $list[$k.$entry[$fieldname]]=$entry;
+               }
+       }
+
+       if ($list) {
+               
+               // sort list
+               //
+               switch ($MYREQUEST['SORT2']) {
+                       case "A":       krsort($list);  break;
+                       case "D":       ksort($list);   break;
+               }
+               
+               // output list
+               $i=0;
+               foreach($list as $k => $entry) {
+      if(!$MYREQUEST['SEARCH'] || preg_match('/'.$MYREQUEST['SEARCH'].'/i', $entry[$fieldname]) != 0) {  
+        echo
+          '<tr class=tr-',$i%2,'>',
+          "<td class=td-0><a href=\"$MY_SELF&OB=",$MYREQUEST['OB'],"&SH=",md5($entry[$fieldkey]),"\">",$entry[$fieldname],'</a></td>',
+          '<td class="td-n center">',$entry['num_hits'],'</td>',
+          '<td class="td-n right">',$entry['mem_size'],'</td>',
+          '<td class="td-n center">',date(DATE_FORMAT,$entry['access_time']),'</td>',
+          '<td class="td-n center">',date(DATE_FORMAT,$entry['mtime']),'</td>',
+          '<td class="td-n center">',date(DATE_FORMAT,$entry['creation_time']),'</td>';
+
+        if($fieldname=='info') {
+          if($entry['ttl'])
+            echo '<td class="td-n center">'.$entry['ttl'].' seconds</td>';
+          else
+            echo '<td class="td-n center">None</td>';
+        }
+        if ($entry['deletion_time']) {
+
+          echo '<td class="td-last center">', date(DATE_FORMAT,$entry['deletion_time']), '</td>';
+        } else if ($MYREQUEST['OB'] == OB_USER_CACHE) {
+
+          echo '<td class="td-last center">';
+          echo '[<a href="', $MY_SELF, '&OB=', $MYREQUEST['OB'], '&DU=', urlencode($entry[$fieldkey]), '">Delete Now</a>]';
+          echo '</td>';
+        } else {
+          echo '<td class="td-last center"> &nbsp; </td>';
+        }
+        echo '</tr>';
+        $i++;
+        if ($i == $MYREQUEST['COUNT'])
+          break;
+      }
+               }
+               
+       } else {
+               echo '<tr class=tr-0><td class="center" colspan=',$cols,'><i>No data</i></td></tr>';
+       }
+       echo <<< EOB
+               </tbody></table>
+EOB;
+
+       if ($list && $i < count($list)) {
+               echo "<a href=\"$MY_SELF&OB=",$MYREQUEST['OB'],"&COUNT=0\"><i>",count($list)-$i,' more available...</i></a>';
+       }
+
+       echo <<< EOB
+               </div>
+EOB;
+       break;
+
+
+// -----------------------------------------------
+// Per-Directory System Cache Entries
+// -----------------------------------------------
+case OB_SYS_CACHE_DIR: 
+       if (!$AUTHENTICATED) {
+               break;
+       }
+
+       echo <<<EOB
+               <div class=sorting><form>Scope:
+               <input type=hidden name=OB value={$MYREQUEST['OB']}>
+               <select name=SCOPE>
+EOB;
+       echo 
+               "<option value=A",$MYREQUEST['SCOPE']=='A' ? " selected":"",">Active</option>",
+               "<option value=D",$MYREQUEST['SCOPE']=='D' ? " selected":"",">Deleted</option>",
+               "</select>",
+               ", Sorting:<select name=SORT1>",
+               "<option value=H",$MYREQUEST['SORT1']=='H' ? " selected":"",">Total Hits</option>",
+               "<option value=Z",$MYREQUEST['SORT1']=='Z' ? " selected":"",">Total Size</option>",
+               "<option value=T",$MYREQUEST['SORT1']=='T' ? " selected":"",">Number of Files</option>",
+               "<option value=S",$MYREQUEST['SORT1']=='S' ? " selected":"",">Directory Name</option>",
+               "<option value=A",$MYREQUEST['SORT1']=='A' ? " selected":"",">Avg. Size</option>",
+               "<option value=C",$MYREQUEST['SORT1']=='C' ? " selected":"",">Avg. Hits</option>",
+               '</select>',
+               '<select name=SORT2>',
+               '<option value=D',$MYREQUEST['SORT2']=='D' ? ' selected':'','>DESC</option>',
+               '<option value=A',$MYREQUEST['SORT2']=='A' ? ' selected':'','>ASC</option>',
+               '</select>',
+               '<select name=COUNT onChange="form.submit()">',
+               '<option value=10 ',$MYREQUEST['COUNT']=='10' ? ' selected':'','>Top 10</option>',
+               '<option value=20 ',$MYREQUEST['COUNT']=='20' ? ' selected':'','>Top 20</option>',
+               '<option value=50 ',$MYREQUEST['COUNT']=='50' ? ' selected':'','>Top 50</option>',
+               '<option value=100',$MYREQUEST['COUNT']=='100'? ' selected':'','>Top 100</option>',
+               '<option value=150',$MYREQUEST['COUNT']=='150'? ' selected':'','>Top 150</option>',
+               '<option value=200',$MYREQUEST['COUNT']=='200'? ' selected':'','>Top 200</option>',
+               '<option value=500',$MYREQUEST['COUNT']=='500'? ' selected':'','>Top 500</option>',
+               '<option value=0  ',$MYREQUEST['COUNT']=='0'  ? ' selected':'','>All</option>',
+               '</select>',
+               ", Group By Dir Level:<select name=AGGR>",
+               "<option value='' selected>None</option>";
+               for ($i = 1; $i < 10; $i++)
+                       echo "<option value=$i",$MYREQUEST['AGGR']==$i ? " selected":"",">$i</option>";
+               echo '</select>',
+               '&nbsp;<input type=submit value="GO!">',
+               '</form></div>',
+
+               '<div class="info"><table cellspacing=0><tbody>',
+               '<tr>',
+               '<th>',sortheader('S','Directory Name', "&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('T','Number of Files',"&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('H','Total Hits',     "&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('Z','Total Size',     "&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('C','Avg. Hits',      "&OB=".$MYREQUEST['OB']),'</th>',
+               '<th>',sortheader('A','Avg. Size',      "&OB=".$MYREQUEST['OB']),'</th>',
+               '</tr>';
+
+       // builds list with alpha numeric sortable keys
+       //
+       $tmp = $list = array();
+       foreach($cache[$scope_list[$MYREQUEST['SCOPE']]] as $entry) {
+               $n = dirname($entry['filename']);
+               if ($MYREQUEST['AGGR'] > 0) {
+                       $n = preg_replace("!^(/?(?:[^/\\\\]+[/\\\\]){".($MYREQUEST['AGGR']-1)."}[^/\\\\]*).*!", "$1", $n);
+               }
+               if (!isset($tmp[$n])) {
+                       $tmp[$n] = array('hits'=>0,'size'=>0,'ents'=>0);
+               }
+               $tmp[$n]['hits'] += $entry['num_hits'];
+               $tmp[$n]['size'] += $entry['mem_size'];
+               ++$tmp[$n]['ents'];
+       }
+
+       foreach ($tmp as $k => $v) {
+               switch($MYREQUEST['SORT1']) {
+                       case 'A': $kn=sprintf('%015d-',$v['size'] / $v['ents']);break;
+                       case 'T': $kn=sprintf('%015d-',$v['ents']);             break;
+                       case 'H': $kn=sprintf('%015d-',$v['hits']);             break;
+                       case 'Z': $kn=sprintf('%015d-',$v['size']);             break;
+                       case 'C': $kn=sprintf('%015d-',$v['hits'] / $v['ents']);break;
+                       case 'S': $kn = $k;                                     break;
+               }
+               $list[$kn.$k] = array($k, $v['ents'], $v['hits'], $v['size']);
+       }
+
+       if ($list) {
+               
+               // sort list
+               //
+               switch ($MYREQUEST['SORT2']) {
+                       case "A":       krsort($list);  break;
+                       case "D":       ksort($list);   break;
+               }
+               
+               // output list
+               $i = 0;
+               foreach($list as $entry) {
+                       echo
+                               '<tr class=tr-',$i%2,'>',
+                               "<td class=td-0>",$entry[0],'</a></td>',
+                               '<td class="td-n center">',$entry[1],'</td>',
+                               '<td class="td-n center">',$entry[2],'</td>',
+                               '<td class="td-n center">',$entry[3],'</td>',
+                               '<td class="td-n center">',round($entry[2] / $entry[1]),'</td>',
+                               '<td class="td-n center">',round($entry[3] / $entry[1]),'</td>',
+                               '</tr>';
+
+                       if (++$i == $MYREQUEST['COUNT']) break;
+               }
+               
+       } else {
+               echo '<tr class=tr-0><td class="center" colspan=6><i>No data</i></td></tr>';
+       }
+       echo <<< EOB
+               </tbody></table>
+EOB;
+
+       if ($list && $i < count($list)) {
+               echo "<a href=\"$MY_SELF&OB=",$MYREQUEST['OB'],"&COUNT=0\"><i>",count($list)-$i,' more available...</i></a>';
+       }
+
+       echo <<< EOB
+               </div>
+EOB;
+       break;
+
+// -----------------------------------------------
+// Version check
+// -----------------------------------------------
+case OB_VERSION_CHECK:
+       echo <<<EOB
+               <div class="info"><h2>APC Version Information</h2>
+               <table cellspacing=0><tbody>
+               <tr>
+               <th></th>
+               </tr>
+EOB;
+
+       $rss = @file_get_contents("http://pecl.php.net/feeds/pkg_apc.rss");
+       if (!$rss) {
+               echo '<tr class="td-last center"><td>Unable to fetch version information.</td></tr>';
+       } else {
+               $apcversion = phpversion('apc');
+
+               preg_match('!<title>APC ([0-9.]+)</title>!', $rss, $match);
+               echo '<tr class="tr-0 center"><td>';
+               if (version_compare($apcversion, $match[1], '>=')) {
+                       echo '<div class="ok">You are running the latest version of APC ('.$apcversion.')</div>';
+                       $i = 3;
+               } else {
+                       echo '<div class="failed">You are running an older version of APC ('.$apcversion.'), 
+                               newer version '.$match[1].' is available at <a href="http://pecl.php.net/package/APC/'.$match[1].'">
+                               http://pecl.php.net/package/APC/'.$match[1].'</a>
+                               </div>';
+                       $i = -1;
+               }
+               echo '</td></tr>';
+               echo '<tr class="tr-0"><td><h3>Change Log:</h3><br/>';
+
+               preg_match_all('!<(title|description)>([^<]+)</\\1>!', $rss, $match);
+               next($match[2]); next($match[2]);
+
+               while (list(,$v) = each($match[2])) {
+                       list(,$ver) = explode(' ', $v, 2);
+                       if ($i < 0 && version_compare($apcversion, $ver, '>=')) {
+                               break;
+                       } else if (!$i--) {
+                               break;
+                       }
+                       echo "<b><a href=\"http://pecl.php.net/package/APC/$ver\">".htmlspecialchars($v)."</a></b><br><blockquote>";
+                       echo nl2br(htmlspecialchars(current($match[2])))."</blockquote>";
+                       next($match[2]);
+               }
+               echo '</td></tr>';
+       }
+       echo <<< EOB
+               </tbody></table>
+               </div>
+EOB;
+       break;
+
+}
+
+echo <<< EOB
+       </div>
+EOB;
+
+?>
+
+<!-- <?php echo "\nBased on APCGUI By R.Becker\n$VERSION\n"?> -->
+</body>
+</html>
diff -ubrN php-5.2.5-orig/ext/apc/apc_php.h php-5.2.5/ext/apc/apc_php.h
--- php-5.2.5-orig/ext/apc/apc_php.h    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_php.h 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,71 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  |          Arun C. Murthy <arunc@yahoo-inc.com>                        |
+  |          Gopal Vijayaraghavan <gopalv@yahoo-inc.com>                 |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_php.h,v 3.10 2006/11/16 20:24:48 gopalv Exp $ */
+
+#ifndef APC_PHP_H
+#define APC_PHP_H
+
+/*
+ * The purpose of this header file is to include all PHP and Zend headers that
+ * are typically needed elsewhere in APC. This makes it easy to insure that
+ * all required headers are available.
+ */
+
+#include "php.h"
+#include "zend.h"
+#include "zend_API.h"
+#include "zend_compile.h"
+#include "zend_hash.h"
+#include "zend_extensions.h"
+
+#if ZEND_MODULE_API_NO > 20050922
+#define ZEND_ENGINE_2_2
+#endif
+#if ZEND_MODULE_API_NO > 20050921
+#define ZEND_ENGINE_2_1
+#endif
+#ifdef ZEND_ENGINE_2_1
+#include "zend_vm.h"
+#endif
+
+#include "rfc1867.h"
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_pthreadmutex.c php-5.2.5/ext/apc/apc_pthreadmutex.c
--- php-5.2.5-orig/ext/apc/apc_pthreadmutex.c   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_pthreadmutex.c        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,111 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: apc_pthreadmutex.c,v 3.3 2007/12/21 01:36:51 shire Exp $ */
+
+#include "apc_pthreadmutex.h"
+
+#ifdef APC_PTHREADMUTEX_LOCKS
+
+pthread_mutex_t *apc_pthreadmutex_create(pthread_mutex_t *lock) 
+{ 
+    int result;
+    pthread_mutexattr_t* attr;
+    attr = malloc(sizeof(pthread_mutexattr_t));
+
+    result = pthread_mutexattr_init(attr);
+    if(result == ENOMEM) {
+        apc_eprint("pthread mutex error: Insufficient memory exists to create the mutex attribute object.");
+    } else if(result == EINVAL) {
+        apc_eprint("pthread mutex error: attr does not point to writeable memory.");
+    } else if(result == EFAULT) {
+        apc_eprint("pthread mutex error: attr is an invalid pointer.");
+    } 
+
+#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
+       result = pthread_mutexattr_settype(attr, PTHREAD_MUTEX_ADAPTIVE_NP);
+       if (result == EINVAL) {
+               apc_eprint("pthread_mutexattr_settype: unable to set adaptive mutexes");
+       }
+#endif
+
+    /* pthread_mutexattr_settype(attr, PTHREAD_MUTEX_ERRORCHECK); */
+    result = pthread_mutexattr_setpshared(attr, PTHREAD_PROCESS_SHARED);
+    if(result == EINVAL) {
+        apc_eprint("pthread mutex error: attr is not an initialized mutex attribute object, or pshared is not a valid process-shared state setting.");
+    } else if(result == EFAULT) {
+        apc_eprint("pthread mutex error: attr is an invalid pointer.");
+    } else if(result == ENOTSUP) {
+        apc_eprint("pthread mutex error: pshared was set to PTHREAD_PROCESS_SHARED.");
+    }
+
+    if(pthread_mutex_init(lock, attr)) { 
+        apc_eprint("unable to initialize pthread lock");
+    }
+    return lock;
+}
+
+void apc_pthreadmutex_destroy(pthread_mutex_t *lock)
+{
+    return; /* we don't actually destroy the mutex, as it would destroy it for all processes */
+}
+
+void apc_pthreadmutex_lock(pthread_mutex_t *lock)
+{
+    int result;
+    result = pthread_mutex_lock(lock);
+    if(result == EINVAL) {
+        apc_eprint("unable to obtain pthread lock (EINVAL)");
+    } else if(result == EDEADLK) {
+        apc_eprint("unable to obtain pthread lock (EDEADLK)");
+    }  
+}
+
+void apc_pthreadmutex_unlock(pthread_mutex_t *lock)
+{
+    if(pthread_mutex_unlock(lock)) {
+        apc_eprint("unable to unlock pthread lock");
+    }
+}
+
+zend_bool apc_pthreadmutex_nonblocking_lock(pthread_mutex_t *lock)
+{
+    int rval;
+    rval = pthread_mutex_trylock(lock);
+    if(rval == EBUSY) {     /* Lock is already held */
+        return 0;
+    } else if(rval == 0) {  /* Obtained lock */
+        return 1;
+    } else {                /* Other error */
+        apc_eprint("unable to obtain pthread trylock");
+        return 0;
+    }
+}
+
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_pthreadmutex.h php-5.2.5/ext/apc/apc_pthreadmutex.h
--- php-5.2.5-orig/ext/apc/apc_pthreadmutex.h   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_pthreadmutex.h        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,48 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: apc_pthreadmutex.h,v 3.3 2007/01/28 07:53:57 shire Exp $ */
+
+#ifndef APC_PTHREADMUTEX_H
+#define APC_PTHREADMUTEX_H
+
+#include "apc.h"
+
+#ifdef APC_PTHREADMUTEX_LOCKS 
+
+#include <pthread.h>
+
+pthread_mutex_t *apc_pthreadmutex_create();
+void apc_pthreadmutex_destroy(pthread_mutex_t *lock);
+void apc_pthreadmutex_lock(pthread_mutex_t *lock);
+void apc_pthreadmutex_unlock(pthread_mutex_t *lock);
+zend_bool apc_pthreadmutex_nonblocking_lock(pthread_mutex_t *lock);
+
+#endif
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_rfc1867.c php-5.2.5/ext/apc/apc_rfc1867.c
--- php-5.2.5-orig/ext/apc/apc_rfc1867.c        1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_rfc1867.c     2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,195 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_rfc1867.c,v 3.12 2007/10/18 20:37:20 rasmus Exp $*/
+
+#include "apc.h"
+#include "apc_globals.h"
+#include "rfc1867.h"
+
+#ifdef PHP_WIN32
+#include "win32/time.h"
+#endif
+
+#ifdef MULTIPART_EVENT_FORMDATA
+extern int _apc_store(char *strkey, int strkey_len, const zval *val, const unsigned int ttl, const int exclusive TSRMLS_DC);
+
+static double my_time() {
+    struct timeval a;
+    double t;
+    gettimeofday(&a, NULL);
+    t = a.tv_sec + (a.tv_usec/1000000.00);
+    return t;
+}
+
+void apc_rfc1867_progress(unsigned int event, void *event_data, void **extra TSRMLS_DC) {
+    static char tracking_key[64];
+    static int  key_length = 0;
+    static size_t content_length = 0;
+    static char filename[128];
+    static char name[64];
+    static char *temp_filename=NULL;
+    static int cancel_upload = 0;
+    static double start_time;
+    static size_t bytes_processed = 0;
+    static size_t prev_bytes_processed = 0;
+    static int update_freq = 0;
+    static double rate;
+    zval *track = NULL;
+
+       switch (event) {
+               case MULTIPART_EVENT_START:
+                       {
+                multipart_event_start *data = (multipart_event_start *) event_data;
+                content_length = data->content_length;
+                *tracking_key = '\0';
+                *name = '\0';
+                cancel_upload = 0;
+                temp_filename = NULL;
+                *filename= '\0';
+                key_length = 0;
+                start_time = my_time();
+                bytes_processed = 0;
+                rate = 0;
+                update_freq = APCG(rfc1867_freq);
+                if(update_freq < 0) {  // frequency is a percentage, not bytes
+                    update_freq = content_length * APCG(rfc1867_freq) / 100; 
+                }
+                       }
+                       break;
+
+               case MULTIPART_EVENT_FORMDATA:
+                       {
+                int prefix_len = strlen(APCG(rfc1867_prefix));
+                multipart_event_formdata *data = (multipart_event_formdata *) event_data;
+                               if(data->name && !strncasecmp(data->name, APCG(rfc1867_name), strlen(APCG(rfc1867_name))) && data->value && data->length && data->length < sizeof(tracking_key) - prefix_len) {
+                    strlcat(tracking_key, APCG(rfc1867_prefix), 63);
+                    strlcat(tracking_key, *data->value, 63);
+                    key_length = data->length + prefix_len;
+                    bytes_processed = data->post_bytes_processed;
+                               }
+                       }
+                       break;
+
+               case MULTIPART_EVENT_FILE_START:
+            if(*tracking_key) {
+                multipart_event_file_start *data = (multipart_event_file_start *) event_data;
+
+                bytes_processed = data->post_bytes_processed;
+                strncpy(filename,*data->filename,127);
+                temp_filename = NULL;
+                strncpy(name,data->name,63);
+                ALLOC_INIT_ZVAL(track);
+                array_init(track);
+                add_assoc_long(track, "total", content_length);
+                add_assoc_long(track, "current", bytes_processed);
+                add_assoc_string(track, "filename", filename, 1);
+                add_assoc_string(track, "name", name, 1);
+                add_assoc_long(track, "done", 0);
+                add_assoc_double(track, "start_time", start_time);
+                _apc_store(tracking_key, key_length, track, 3600, 0 TSRMLS_CC);
+                zval_ptr_dtor(&track);
+            }
+            break;
+
+               case MULTIPART_EVENT_FILE_DATA:
+            if(*tracking_key) {
+                multipart_event_file_data *data = (multipart_event_file_data *) event_data;
+                bytes_processed = data->post_bytes_processed;
+                ALLOC_INIT_ZVAL(track);
+                array_init(track);
+                add_assoc_long(track, "total", content_length);
+                add_assoc_long(track, "current", bytes_processed);
+                add_assoc_string(track, "filename", filename, 1);
+                add_assoc_string(track, "name", name, 1);
+                add_assoc_long(track, "done", 0);
+                add_assoc_double(track, "start_time", start_time);
+                if(bytes_processed - prev_bytes_processed > update_freq) {
+                    _apc_store(tracking_key, key_length, track, 3600, 0 TSRMLS_CC);
+                    prev_bytes_processed = bytes_processed;
+                }
+                zval_ptr_dtor(&track);
+                       }
+                       break;
+
+               case MULTIPART_EVENT_FILE_END:
+            if(*tracking_key) {
+                multipart_event_file_end *data = (multipart_event_file_end *) event_data;
+                bytes_processed = data->post_bytes_processed;
+                cancel_upload = data->cancel_upload;
+                temp_filename = data->temp_filename;
+                ALLOC_INIT_ZVAL(track);
+                array_init(track);
+                add_assoc_long(track, "total", content_length);
+                add_assoc_long(track, "current", bytes_processed);
+                add_assoc_string(track, "filename", filename, 1);
+                add_assoc_string(track, "name", name, 1);
+                add_assoc_string(track, "temp_filename", temp_filename, 1);
+                add_assoc_long(track, "cancel_upload", cancel_upload);
+                add_assoc_long(track, "done", 0);
+                add_assoc_double(track, "start_time", start_time);
+                _apc_store(tracking_key, key_length, track, 3600, 0 TSRMLS_CC);
+                zval_ptr_dtor(&track);
+                       }
+                       break;
+
+               case MULTIPART_EVENT_END:
+            if(*tracking_key) {
+                double now = my_time(); 
+                multipart_event_end *data = (multipart_event_end *) event_data;
+                bytes_processed = data->post_bytes_processed;
+                if(now>start_time) rate = 8.0*bytes_processed/(now-start_time);
+                else rate = 8.0*bytes_processed;  /* Too quick */
+                ALLOC_INIT_ZVAL(track);
+                array_init(track);
+                add_assoc_long(track, "total", content_length);
+                add_assoc_long(track, "current", bytes_processed);
+                add_assoc_double(track, "rate", rate);
+                add_assoc_string(track, "filename", filename, 1);
+                add_assoc_string(track, "name", name, 1);
+                if(temp_filename) {
+                    add_assoc_string(track, "temp_filename", temp_filename, 1);
+                }
+                add_assoc_long(track, "cancel_upload", cancel_upload);
+                add_assoc_long(track, "done", 1);
+                add_assoc_double(track, "start_time", start_time);
+                _apc_store(tracking_key, key_length, track, 3600, 0 TSRMLS_CC);
+                zval_ptr_dtor(&track);
+                       }
+                       break;
+       }
+}
+
+#endif
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_sem.c php-5.2.5/ext/apc/apc_sem.c
--- php-5.2.5-orig/ext/apc/apc_sem.c    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_sem.c 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,177 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_sem.c,v 3.16 2006/03/12 00:31:45 rasmus Exp $ */
+
+#include "apc_sem.h"
+#include "apc.h"
+#include "php.h"
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#if HAVE_SEMUN
+/* we have semun, no need to define */
+#else
+#undef HAVE_SEMUN
+union semun {
+    int val;                  /* value for SETVAL */
+    struct semid_ds *buf;     /* buffer for IPC_STAT, IPC_SET */
+    unsigned short *array;    /* array for GETALL, SETALL */
+                              /* Linux specific part: */
+    struct seminfo *__buf;    /* buffer for IPC_INFO */
+};
+#define HAVE_SEMUN 1
+#endif
+
+#ifndef SEM_R
+# define SEM_R 0444
+#endif
+#ifndef SEM_A
+# define SEM_A 0222
+#endif
+
+/* always use SEM_UNDO, otherwise we risk deadlock */
+#define USE_SEM_UNDO
+
+#ifdef USE_SEM_UNDO
+# define UNDO SEM_UNDO
+#else
+# define UNDO 0
+#endif
+
+int apc_sem_create(const char* pathname, int proj, int initval)
+{
+    int semid;
+    int perms;
+    union semun arg;
+    key_t key;
+
+    perms = 0777;
+
+    key = IPC_PRIVATE;
+    if (pathname != NULL) {
+        if ((key = ftok(pathname, proj)) < 0) {
+            apc_eprint("apc_sem_create: ftok(%s,%d) failed:", pathname, proj);
+        }
+    }
+    
+    if ((semid = semget(key, 1, IPC_CREAT | IPC_EXCL | perms)) >= 0) {
+        /* sempahore created for the first time, initialize now */
+        arg.val = initval;
+        if (semctl(semid, 0, SETVAL, arg) < 0) {
+            apc_eprint("apc_sem_create: semctl(%d,...) failed:", semid);
+        }
+    }
+    else if (errno == EEXIST) {
+        /* sempahore already exists, don't initialize */
+        if ((semid = semget(key, 1, perms)) < 0) {
+            apc_eprint("apc_sem_create: semget(%u,...) failed:", key);
+        }
+        /* insert <sleazy way to avoid race condition> here */
+    }
+    else {
+        apc_eprint("apc_sem_create: semget(%u,...) failed:", key);
+    }
+
+    return semid;
+}
+
+void apc_sem_destroy(int semid)
+{
+    /* we expect this call to fail often, so we do not check */
+    union semun arg;
+    semctl(semid, 0, IPC_RMID, arg);
+}
+
+void apc_sem_lock(int semid)
+{
+    struct sembuf op;
+
+    op.sem_num = 0;
+    op.sem_op  = -1;
+    op.sem_flg = UNDO;
+
+    if (semop(semid, &op, 1) < 0) {
+        if (errno != EINTR) {
+            apc_eprint("apc_sem_lock: semop(%d) failed:", semid);
+        }
+    }
+}
+
+void apc_sem_unlock(int semid)
+{
+    struct sembuf op;
+
+    op.sem_num = 0;
+    op.sem_op  = 1;
+    op.sem_flg = UNDO;
+
+    if (semop(semid, &op, 1) < 0) {
+        if (errno != EINTR) {
+            apc_eprint("apc_sem_unlock: semop(%d) failed:", semid);
+        }
+    }
+}
+
+void apc_sem_wait_for_zero(int semid)
+{
+    struct sembuf op;
+
+    op.sem_num = 0;
+    op.sem_op  = 0;
+    op.sem_flg = UNDO;
+
+    if (semop(semid, &op, 1) < 0) {
+        if (errno != EINTR) {
+            apc_eprint("apc_sem_waitforzero: semop(%d) failed:", semid);
+        }
+    }
+}
+
+int apc_sem_get_value(int semid)
+{
+    union semun arg;
+    unsigned short val[1];
+
+    arg.array = val;
+    if (semctl(semid, 0, GETALL, arg) < 0) {
+        apc_eprint("apc_sem_getvalue: semctl(%d,...) failed:", semid);
+    }
+    return val[0];
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_sem.h php-5.2.5/ext/apc/apc_sem.h
--- php-5.2.5-orig/ext/apc/apc_sem.h    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_sem.h 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,51 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_sem.h,v 3.6 2006/03/12 00:31:45 rasmus Exp $ */
+
+#ifndef APC_SEM_H
+#define APC_SEM_H
+
+/* Wrapper functions for SysV sempahores */
+
+extern int apc_sem_create(const char* pathname, int proj, int initval);
+extern void apc_sem_destroy(int semid);
+extern void apc_sem_lock(int semid);
+extern void apc_sem_unlock(int semid);
+extern void apc_sem_wait_for_zero(int semid);
+extern int apc_sem_get_value(int semid);
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_shm.c php-5.2.5/ext/apc/apc_shm.c
--- php-5.2.5-orig/ext/apc/apc_shm.c    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_shm.c 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,110 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_shm.c,v 3.11 2007/05/09 22:15:33 shire Exp $ */
+
+#include "apc_shm.h"
+#include "apc.h"
+#ifdef PHP_WIN32
+/* shm functions are available in TSRM */
+#include <tsrm/tsrm_win32.h>
+#define key_t long
+#else
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/stat.h>
+#endif
+
+#ifndef SHM_R
+# define SHM_R 0444 /* read permission */
+#endif
+#ifndef SHM_A
+# define SHM_A 0222 /* write permission */
+#endif
+
+int apc_shm_create(const char* pathname, int proj, size_t size)
+{
+    int shmid;  /* shared memory id */
+    int oflag;  /* permissions on shm */
+    key_t key;  /* shm key returned by ftok */
+
+    key = IPC_PRIVATE;
+#ifndef PHP_WIN32
+       /* no ftok yet for win32 */
+    if (pathname != NULL) {
+        if ((key = ftok(pathname, proj)) < 0) {
+            apc_eprint("apc_shm_create: ftok failed:");
+        }
+    }
+#endif
+
+    oflag = IPC_CREAT | SHM_R | SHM_A;
+    if ((shmid = shmget(key, size, oflag)) < 0) {
+        apc_eprint("apc_shm_create: shmget(%d, %d, %d) failed: %s. It is possible that the chosen SHM segment size is higher than the operation system allows. Linux has usually a default limit of 32MB per segment.", key, size, oflag, strerror(errno));
+    }
+
+    return shmid;
+}
+
+void apc_shm_destroy(int shmid)
+{
+    /* we expect this call to fail often, so we do not check */
+    shmctl(shmid, IPC_RMID, 0);
+}
+
+void* apc_shm_attach(int shmid)
+{
+    void* shmaddr;  /* the shared memory address */
+
+    if ((int)(shmaddr = shmat(shmid, 0, 0)) == -1) {
+        apc_eprint("apc_shm_attach: shmat failed:");
+    }
+
+    /*
+     * We set the shmid for removal immediately after attaching to it. The
+     * segment won't disappear until all processes have detached from it.
+     */
+    apc_shm_destroy(shmid);
+    return shmaddr;
+}
+
+void apc_shm_detach(void* shmaddr)
+{
+    if (shmdt(shmaddr) < 0) {
+        apc_eprint("apc_shm_detach: shmdt failed:");
+    }
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_shm.h php-5.2.5/ext/apc/apc_shm.h
--- php-5.2.5-orig/ext/apc/apc_shm.h    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_shm.h 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,54 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_shm.h,v 3.8 2007/05/23 01:23:21 auroraeosrose Exp $ */
+
+#ifndef APC_SHM_H
+#define APC_SHM_H
+
+#include <sys/types.h>
+#ifdef PHP_WIN32
+#include <time.h>
+#endif
+
+/* Wrapper functions for unix shared memory */
+
+extern int apc_shm_create(const char* name, int proj, size_t size);
+extern void apc_shm_destroy(int shmid);
+extern void* apc_shm_attach(int shmid);
+extern void apc_shm_detach(void* shmaddr);
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_signal.c php-5.2.5/ext/apc/apc_signal.c
--- php-5.2.5-orig/ext/apc/apc_signal.c 1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_signal.c      2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,178 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Lucas Nealan <lucas@php.net>                                |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Facebook Inc. in 2007.
+   
+   Future revisions and derivatives of this source code must acknowledge
+   Facebook Inc. as the original contributor of this module by leaving
+   this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+ */
+
+ /* $Id: apc_signal.c,v 1.2 2007/12/26 22:38:43 rasmus Exp $ */
+
+ /* Allows apc to install signal handlers and maintain signalling
+    to already registered handlers. Registers all signals that
+    coredump by default and unmaps the shared memory segment
+    before the coredump. Note: PHP module init is called before 
+    signals are set by Apache and thus apc_set_signals should
+    be called in request init (RINIT)
+  */
+
+#include <signal.h>
+#include "apc_globals.h"
+#include "apc_sma.h"
+#include "apc_signal.h"
+
+static apc_signal_info_t apc_signal_info = {0};
+
+static int apc_register_signal(int signo, void (*handler)(int, siginfo_t*, void*));
+static void apc_rehandle_signal(int signo, siginfo_t *siginfo, void *context);
+static void apc_core_unmap(int signo, siginfo_t *siginfo, void *context);
+
+/* {{{ apc_core_unmap 
+ *  Coredump signal handler, unmaps shm and calls previously installed handlers 
+ */
+static void apc_core_unmap(int signo, siginfo_t *siginfo, void *context) 
+{
+    apc_sma_cleanup();
+    apc_rehandle_signal(signo, siginfo, context);
+
+#if !defined(WIN32) && !defined(NETWARE)
+    kill(getpid(), signo);
+#else
+    raise(signo);
+#endif
+} /* }}} */
+
+/* {{{ apc_rehandle_signal
+ *  Call the previously registered handler for a signal
+ */
+static void apc_rehandle_signal(int signo, siginfo_t *siginfo, void *context)
+{
+    int i;
+    apc_signal_entry_t p_sig = {0};
+
+    for (i=0;  (i < apc_signal_info.installed && p_sig.signo != signo);  i++) {
+        p_sig = *apc_signal_info.prev[i];
+        if (p_sig.signo == signo) {
+            if (p_sig.siginfo) {
+                (*(void (*)(int, siginfo_t*, void*))p_sig.handler)(signo, siginfo, context);
+            } else {
+                (*(void (*)(int))p_sig.handler)(signo);
+            }
+        }
+    }
+
+} /* }}} */
+
+/* {{{ apc_register_signal
+ *  Set a handler for a previously installed signal and save so we can 
+ *  callback when handled 
+ */
+static int apc_register_signal(int signo, void (*handler)(int, siginfo_t*, void*))
+{
+#if HAVE_SIGACTION
+    struct sigaction sa = {0};
+    apc_signal_entry_t p_sig = {0};
+
+    if (sigaction(signo, NULL, &sa) == 0) {
+        if ((void*)sa.sa_handler == (void*)handler) {
+            return SUCCESS;
+        }
+
+        if (sa.sa_handler != SIG_ERR && sa.sa_handler != SIG_DFL && sa.sa_handler != SIG_IGN) {
+            p_sig.signo = signo;
+            p_sig.siginfo = ((sa.sa_flags & SA_SIGINFO) == SA_SIGINFO);
+            p_sig.handler = (void *)sa.sa_handler;
+           
+            apc_signal_info.prev = (apc_signal_entry_t **)apc_erealloc(apc_signal_info.prev, (apc_signal_info.installed+1)*sizeof(apc_signal_entry_t *));
+            apc_signal_info.prev[apc_signal_info.installed] = (apc_signal_entry_t *)apc_emalloc(sizeof(apc_signal_entry_t));
+            *apc_signal_info.prev[apc_signal_info.installed++] = p_sig;
+        } else {
+            /* inherit flags and mask if already set */
+            sigemptyset(&sa.sa_mask);
+            sa.sa_flags = 0;
+            sa.sa_flags |= SA_SIGINFO; /* we'll use a siginfo handler */
+#if defined(SA_ONESHOT)
+            sa.sa_flags = SA_ONESHOT;
+#elif defined(SA_RESETHAND)
+            sa.sa_flags = SA_RESETHAND;
+#endif
+        }
+        sa.sa_handler = (void*)handler;
+
+        if (sigaction(signo, &sa, NULL) < 0) {
+            apc_wprint("Error installing apc signal handler for %d", signo);
+        }
+
+        return SUCCESS;
+    }
+#endif
+    return FAILURE;
+} /* }}} */
+
+/* {{{ apc_set_signals
+ *  Install our signal handlers */
+void apc_set_signals(TSRMLS_D) 
+{
+    if (APCG(coredump_unmap) && apc_signal_info.installed == 0) {
+        /* ISO C standard signals that coredump */
+        apc_register_signal(SIGSEGV, apc_core_unmap);
+        apc_register_signal(SIGABRT, apc_core_unmap);
+        apc_register_signal(SIGFPE, apc_core_unmap);
+        apc_register_signal(SIGILL, apc_core_unmap);
+        /* extended signals that coredump */
+#ifdef SIGBUS
+        apc_register_signal(SIGBUS, apc_core_unmap);
+#endif
+#ifdef SIGABORT
+        apc_register_signal(SIGABORT, apc_core_unmap);
+#endif
+#ifdef SIGEMT
+        apc_register_signal(SIGEMT, apc_core_unmap);
+#endif
+#ifdef SIGIOT
+        apc_register_signal(SIGIOT, apc_core_unmap);
+#endif
+#ifdef SIGQUIT
+        apc_register_signal(SIGQUIT, apc_core_unmap);
+#endif
+#ifdef SIGSYS
+        apc_register_signal(SIGSYS, apc_core_unmap);
+#endif
+#ifdef SIGTRAP
+        apc_register_signal(SIGTRAP, apc_core_unmap);
+#endif
+#ifdef SIGXCPU
+        apc_register_signal(SIGXCPU, apc_core_unmap);
+#endif
+#ifdef SIGXFSZ
+        apc_register_signal(SIGXFSZ, apc_core_unmap);
+#endif
+    }
+} /* }}} */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_signal.h php-5.2.5/ext/apc/apc_signal.h
--- php-5.2.5-orig/ext/apc/apc_signal.h 1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_signal.h      2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,50 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Lucas Nealan <lucas@php.net>                                |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: apc_signal.h,v 1.1 2007/12/26 22:36:06 rasmus Exp $ */
+
+#ifndef APC_SIGNAL_H
+#define APC_SIGNAL_H
+
+#include "apc.h"
+#include "apc_php.h"
+
+typedef struct apc_signal_entry_t {
+    int signo;          /* signal number */
+    int siginfo;        /* siginfo style handler calling */
+    void* handler;      /* signal handler */
+} apc_signal_entry_t;
+
+typedef struct apc_signal_info_t {
+    int installed;                  /* How many signals we've installed handles for */
+    apc_signal_entry_t **prev;      /* Previous signal handlers */
+} apc_signal_info_t;
+
+void apc_set_signals(TSRMLS_D);
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_sma.c php-5.2.5/ext/apc/apc_sma.c
--- php-5.2.5-orig/ext/apc/apc_sma.c    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_sma.c 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,628 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_sma.c,v 1.69 2007/12/26 21:35:39 gopalv Exp $ */
+
+#include "apc_sma.h"
+#include "apc.h"
+#include "apc_globals.h"
+#include "apc_lock.h"
+#include "apc_shm.h"
+#include <limits.h>
+#if APC_MMAP
+void *apc_mmap(char *file_mask, size_t size);
+void apc_unmap(void* shmaddr, size_t size);
+#endif
+
+/* {{{ locking macros */
+#define LOCK(c)         { HANDLE_BLOCK_INTERRUPTIONS(); apc_lck_lock(c); }
+#define RDLOCK(c)       { HANDLE_BLOCK_INTERRUPTIONS(); apc_lck_rdlock(c); }
+#define UNLOCK(c)       { apc_lck_unlock(c); HANDLE_UNBLOCK_INTERRUPTIONS(); }
+/* }}} */
+
+enum { DEFAULT_NUMSEG=1, DEFAULT_SEGSIZE=30*1024*1024 };
+
+static int sma_initialized = 0;     /* true if the sma has been initialized */
+static unsigned int sma_numseg;     /* number of shm segments to allow */
+static size_t sma_segsize;          /* size of each shm segment */
+static size_t* sma_segments;        /* array of shm segment ids */
+static void** sma_shmaddrs;         /* array of shm segment addresses */
+static int sma_lastseg = 0;         /* index of MRU segment */
+
+typedef struct header_t header_t;
+struct header_t {
+    apc_lck_t sma_lock;     /* segment lock, MUST BE ALIGNED for futex locks */
+    size_t segsize;         /* size of entire segment */
+    size_t avail;           /* bytes available (not necessarily contiguous) */
+    size_t nfoffset;        /* start next fit search from this offset       */
+#if ALLOC_DISTRIBUTION
+    size_t adist[30];
+#endif
+};
+
+
+/* do not enable for threaded http servers */
+/* #define __APC_SMA_DEBUG__ 1 */
+
+#ifdef __APC_SMA_DEBUG__
+/* global counter for identifying blocks 
+ * Technically it is possible to do the same
+ * using offsets, but double allocations of the
+ * same offset can happen. */
+static volatile size_t block_id = 0;
+#endif
+
+#define APC_SMA_CANARIES 1   
+
+typedef struct block_t block_t;
+struct block_t {
+    size_t size;       /* size of this block */
+    size_t next;       /* offset in segment of next free block */
+#ifdef APC_SMA_CANARIES
+    size_t canary;     /* canary to check for memory overwrites */
+#endif
+#ifdef __APC_SMA_DEBUG__
+    size_t id;         /* identifier for the memory block */ 
+#endif
+};
+
+/* The macros BLOCKAT and OFFSET are used for convenience throughout this
+ * module. Both assume the presence of a variable shmaddr that points to the
+ * beginning of the shared memory segment in question. */
+
+#define BLOCKAT(offset) ((block_t*)((char *)shmaddr + offset))
+#define OFFSET(block) ((size_t)(((char*)block) - (char*)shmaddr))
+
+/* Canary macros for setting, checking and resetting memory canaries */
+#ifdef APC_SMA_CANARIES
+    #define SET_CANARY(v) (v)->canary = 0x42424242
+    #define CHECK_CANARY(v) assert((v)->canary == 0x42424242)
+    #define RESET_CANARY(v) (v)->canary = -42
+#else
+    #define SET_CANARY(v) 
+    #define CHECK_CANARY(v)
+    #define RESET_CANARY(v)
+#endif
+
+
+#ifdef max
+#undef max
+#endif
+#define max(a, b) ((a) > (b) ? (a) : (b))
+
+/* {{{ ALIGNWORD: pad up x, aligned to the system's word boundary */
+typedef union { void* p; int i; long l; double d; void (*f)(); } apc_word_t;
+#define ALIGNWORD(x) (sizeof(apc_word_t) * (1 + (((x)-1)/sizeof(apc_word_t))))
+#define MINBLOCKSIZE (ALIGNWORD(1) + ALIGNWORD(sizeof(block_t)))
+/* }}} */
+
+/* {{{ sma_allocate: tries to allocate size bytes in a segment */
+static int sma_allocate(void* shmaddr, size_t size)
+{
+    header_t* header;       /* header of shared memory segment */
+    block_t* prv;           /* block prior to working block */
+    block_t* cur;           /* working block in list */
+    block_t* prvnextfit;    /* block before next fit */
+    size_t realsize;        /* actual size of block needed, including header */
+    size_t last_offset;     /* save the last search offset */
+    int wrapped=0;
+    const size_t block_size = ALIGNWORD(sizeof(struct block_t));
+
+    realsize = ALIGNWORD(size + block_size);
+
+    /*
+     * First, insure that the segment contains at least realsize free bytes,
+     * even if they are not contiguous.
+     */
+    header = (header_t*) shmaddr;
+    if (header->avail < realsize) {
+        return -1;
+    }
+
+    prvnextfit = 0;     /* initially null (no fit) */
+    last_offset = 0;
+
+    /* If we have a next fit offset, start searching from there */
+    if(header->nfoffset) {
+        prv = BLOCKAT(header->nfoffset);
+        /* if prv is the last block, jump to the beginning */
+        if(prv->next == 0) {
+            prv = BLOCKAT(ALIGNWORD(sizeof(header_t)));
+            wrapped = 1;
+        }
+    } else {    
+        prv = BLOCKAT(ALIGNWORD(sizeof(header_t)));
+    }
+   
+    CHECK_CANARY(prv);
+
+    while (prv->next != header->nfoffset) {
+        cur = BLOCKAT(prv->next);
+#ifdef __APC_SMA_DEBUG__
+        CHECK_CANARY(cur);
+#endif
+        /* If it can fit realiszie bytes in cur block, stop searching */
+        if (cur->size >= realsize) {
+            prvnextfit = prv;
+            break;
+        }
+        last_offset = prv->next;
+        prv = cur;
+        if(wrapped && (prv->next >= header->nfoffset)) break;
+
+        /* Check to see if we need to wrap around and search from the top */
+        if(header->nfoffset && prv->next == 0) {
+            prv = BLOCKAT(ALIGNWORD(sizeof(header_t)));
+#ifdef __APC_SMA_DEBUG__
+            CHECK_CANARY(prv);
+#endif
+            last_offset = 0;
+            wrapped = 1;
+        } 
+    }
+
+    if (prvnextfit == 0) {
+        header->nfoffset = 0;
+        return -1;
+    }
+
+    prv = prvnextfit;
+    cur = BLOCKAT(prv->next);
+
+    CHECK_CANARY(prv);
+    CHECK_CANARY(cur);
+
+    if (cur->size == realsize || (cur->size > realsize && cur->size < (realsize + (MINBLOCKSIZE * 2)))) {
+        /* cur is big enough for realsize, but too small to split - unlink it */
+        prv->next = cur->next;
+    }
+    else {
+        block_t* nxt;      /* the new block (chopped part of cur) */
+        size_t nxtoffset;  /* offset of the block currently after cur */
+        size_t oldsize;    /* size of cur before split */
+
+        /* nextfit is too big; split it into two smaller blocks */
+        nxtoffset = cur->next;
+        oldsize = cur->size;
+        prv->next += realsize;  /* skip over newly allocated block */
+        cur->size = realsize;   /* Set the size of this new block */
+        nxt = BLOCKAT(prv->next);
+        nxt->next = nxtoffset;  /* Re-link the shortened block */
+        nxt->size = oldsize - realsize;  /* and fix the size */
+        SET_CANARY(nxt);
+#ifdef __APC_SMA_DEBUG__
+        nxt->id = -1;
+#endif
+    }
+
+    /* update the block header */
+    header->avail -= cur->size;
+#if ALLOC_DISTRIBUTION
+    header->adist[(int)(log(size)/log(2))]++;
+#endif
+
+    header->nfoffset = last_offset;
+
+    SET_CANARY(cur);
+#ifdef __APC_SMA_DEBUG__
+    cur->id = ++block_id;
+    fprintf(stderr, "allocate(realsize=%d,size=%d,id=%d)\n", (int)(size), (int)(cur->size), cur->id);
+#endif
+
+    return OFFSET(cur) + block_size;
+}
+/* }}} */
+
+/* {{{ sma_deallocate: deallocates the block at the given offset */
+static int sma_deallocate(void* shmaddr, int offset)
+{
+    header_t* header;   /* header of shared memory segment */
+    block_t* cur;       /* the new block to insert */
+    block_t* prv;       /* the block before cur */
+    block_t* nxt;       /* the block after cur */
+    size_t size;        /* size of deallocated block */
+
+    offset -= ALIGNWORD(sizeof(struct block_t));
+    assert(offset >= 0);
+
+    /* find position of new block in free list */
+    cur = BLOCKAT(offset);
+    prv = BLOCKAT(ALIGNWORD(sizeof(header_t)));
+   
+    CHECK_CANARY(cur);
+
+#ifdef __APC_SMA_DEBUG__
+    CHECK_CANARY(prv);
+    fprintf(stderr, "free(%p, size=%d,id=%d)\n", cur, (int)(cur->size), cur->id);
+#endif
+    while (prv->next != 0 && prv->next < offset) {
+        prv = BLOCKAT(prv->next);
+#ifdef __APC_SMA_DEBUG__
+        CHECK_CANARY(prv);
+#endif
+    }
+    
+    CHECK_CANARY(prv);
+
+    /* insert new block after prv */
+    cur->next = prv->next;
+    prv->next = offset;
+
+#ifdef __APC_SMA_DEBUG__
+    CHECK_CANARY(cur);
+    cur->id = -1;
+#endif
+    
+    /* update the block header */
+    header = (header_t*) shmaddr;
+    header->avail += cur->size;
+    size = cur->size;
+
+    if (((char *)prv) + prv->size == (char *) cur) {
+        /* cur and prv share an edge, combine them */
+        prv->size += cur->size;
+        prv->next = cur->next;
+        RESET_CANARY(cur);
+        cur = prv;
+    }
+
+    nxt = BLOCKAT(cur->next);
+
+    if (((char *)cur) + cur->size == (char *) nxt) {
+        /* cur and nxt shared an edge, combine them */
+        cur->size += nxt->size;
+        cur->next = nxt->next;
+#ifdef __APC_SMA_DEBUG__
+        CHECK_CANARY(nxt);
+        nxt->id = -1; /* assert this or set it ? */
+#endif
+        RESET_CANARY(nxt);
+    }
+    header->nfoffset = 0;  /* Reset the next fit search marker */
+
+    return size;
+}
+/* }}} */
+
+/* {{{ apc_sma_init */
+
+void apc_sma_init(int numseg, size_t segsize, char *mmap_file_mask)
+{
+    int i;
+
+    if (sma_initialized) {
+        return;
+    }
+    sma_initialized = 1;
+
+#if APC_MMAP
+    /*
+     * I don't think multiple anonymous mmaps makes any sense
+     * so force sma_numseg to 1 in this case
+     */
+    if(!mmap_file_mask || 
+       (mmap_file_mask && !strlen(mmap_file_mask)) ||
+       (mmap_file_mask && !strcmp(mmap_file_mask, "/dev/zero"))) {
+        sma_numseg = 1;
+    } else {
+        sma_numseg = numseg > 0 ? numseg : DEFAULT_NUMSEG;
+    }
+#else
+    sma_numseg = numseg > 0 ? numseg : DEFAULT_NUMSEG;
+#endif
+
+    sma_segsize = segsize > 0 ? segsize : DEFAULT_SEGSIZE;
+
+    sma_segments = (size_t*) apc_emalloc(sma_numseg*sizeof(size_t));
+    sma_shmaddrs = (void**) apc_emalloc(sma_numseg*sizeof(void*));
+    
+    for (i = 0; i < sma_numseg; i++) {
+        header_t*   header;
+        block_t*    block;
+        void*       shmaddr;
+
+#if APC_MMAP
+        sma_segments[i] = sma_segsize;
+        sma_shmaddrs[i] = apc_mmap(mmap_file_mask, sma_segsize);
+        if(sma_numseg != 1) memcpy(&mmap_file_mask[strlen(mmap_file_mask)-6], "XXXXXX", 6);
+#else
+        sma_segments[i] = apc_shm_create(NULL, i, sma_segsize);
+        sma_shmaddrs[i] = apc_shm_attach(sma_segments[i]);
+#endif
+        shmaddr = sma_shmaddrs[i];
+    
+        header = (header_t*) shmaddr;
+        apc_lck_create(NULL, 0, 1, header->sma_lock);
+        header->segsize = sma_segsize;
+        header->avail = sma_segsize - ALIGNWORD(sizeof(header_t)) - ALIGNWORD(sizeof(block_t));
+        header->nfoffset = 0;
+#if ALLOC_DISTRIBUTION
+               {
+           int j;
+           for(j=0; j<30; j++) header->adist[j] = 0; 
+        }
+#endif 
+        block = BLOCKAT(ALIGNWORD(sizeof(header_t)));
+        block->size = 0;
+        block->next = ALIGNWORD(sizeof(header_t)) + ALIGNWORD(sizeof(block_t));
+        SET_CANARY(block);
+#ifdef __APC_SMA_DEBUG__
+        block->id = -1;
+#endif
+        block = BLOCKAT(block->next);
+        block->size = header->avail;
+        block->next = 0;
+        SET_CANARY(block);
+#ifdef __APC_SMA_DEBUG__
+        block->id = -1;
+#endif
+    }
+}
+/* }}} */
+
+/* {{{ apc_sma_cleanup */
+void apc_sma_cleanup()
+{
+    int i;
+
+    assert(sma_initialized);
+
+    for (i = 0; i < sma_numseg; i++) {
+        apc_lck_destroy(((header_t*)sma_shmaddrs[i])->sma_lock);
+#if APC_MMAP
+        apc_unmap(sma_shmaddrs[i], sma_segments[i]);
+#else
+        apc_shm_detach(sma_shmaddrs[i]);
+#endif
+    }
+    sma_initialized = 0;
+    apc_efree(sma_segments);
+    apc_efree(sma_shmaddrs);
+}
+/* }}} */
+
+/* {{{ apc_sma_malloc */
+void* apc_sma_malloc(size_t n)
+{
+    int off;
+    int i;
+
+    TSRMLS_FETCH();
+    assert(sma_initialized);
+    LOCK(((header_t*)sma_shmaddrs[sma_lastseg])->sma_lock);
+
+    off = sma_allocate(sma_shmaddrs[sma_lastseg], n);
+    if (off != -1) {
+        void* p = (void *)(((char *)(sma_shmaddrs[sma_lastseg])) + off);
+        if (APCG(mem_size_ptr) != NULL) { *(APCG(mem_size_ptr)) += n; }
+        UNLOCK(((header_t*)sma_shmaddrs[sma_lastseg])->sma_lock);
+        return p;
+    }
+    UNLOCK(((header_t*)sma_shmaddrs[sma_lastseg])->sma_lock);
+
+    for (i = 0; i < sma_numseg; i++) {
+        if (i == sma_lastseg) {
+            continue;
+        }
+        LOCK(((header_t*)sma_shmaddrs[i])->sma_lock);
+        off = sma_allocate(sma_shmaddrs[i], n);
+        if (off != -1) {
+            void* p = (void *)(((char *)(sma_shmaddrs[i])) + off);
+            if (APCG(mem_size_ptr) != NULL) { *(APCG(mem_size_ptr)) += n; }
+            UNLOCK(((header_t*)sma_shmaddrs[i])->sma_lock);
+            sma_lastseg = i;
+            return p;
+        }
+        UNLOCK(((header_t*)sma_shmaddrs[i])->sma_lock);
+    }
+
+    return NULL;
+}
+/* }}} */
+
+/* {{{ apc_sma_realloc */
+void* apc_sma_realloc(void *p, size_t n)
+{
+    apc_sma_free(p);
+    return apc_sma_malloc(n);
+}
+/* }}} */
+
+/* {{{ apc_sma_strdup */
+char* apc_sma_strdup(const char* s)
+{
+    void* q;
+    int len;
+
+    if(!s) return NULL;
+
+    len = strlen(s)+1;
+    q = apc_sma_malloc(len);
+    if(!q) return NULL;
+    memcpy(q, s, len);
+    return q;
+}
+/* }}} */
+
+/* {{{ apc_sma_free */
+void apc_sma_free(void* p)
+{
+    int i;
+    size_t offset;
+    size_t d_size;
+    TSRMLS_FETCH();
+
+    if (p == NULL) {
+        return;
+    }
+
+    assert(sma_initialized);
+
+    for (i = 0; i < sma_numseg; i++) {
+        LOCK(((header_t*)sma_shmaddrs[i])->sma_lock);
+        offset = (size_t)((char *)p - (char *)(sma_shmaddrs[i]));
+        if (p >= sma_shmaddrs[i] && offset < sma_segsize) {
+            d_size = sma_deallocate(sma_shmaddrs[i], offset);
+            if (APCG(mem_size_ptr) != NULL) { *(APCG(mem_size_ptr)) -= d_size; }
+            UNLOCK(((header_t*)sma_shmaddrs[i])->sma_lock);
+            return;
+        }
+        UNLOCK(((header_t*)sma_shmaddrs[i])->sma_lock);
+    }
+
+    apc_eprint("apc_sma_free: could not locate address %p", p);
+}
+/* }}} */
+
+/* {{{ apc_sma_info */
+apc_sma_info_t* apc_sma_info(zend_bool limited)
+{
+    apc_sma_info_t* info;
+    apc_sma_link_t** link;
+    int i;
+       char* shmaddr;
+       block_t* prv;
+       
+    if (!sma_initialized) {
+        return NULL;
+    }
+
+    info = (apc_sma_info_t*) apc_emalloc(sizeof(apc_sma_info_t));
+    info->num_seg = sma_numseg;
+    info->seg_size = sma_segsize - ALIGNWORD(sizeof(header_t)) - ALIGNWORD(sizeof(block_t));
+
+    info->list = apc_emalloc(info->num_seg * sizeof(apc_sma_link_t*));
+    for (i = 0; i < sma_numseg; i++) {
+        info->list[i] = NULL;
+    }
+
+    if(limited) return info;
+
+    /* For each segment */
+    for (i = 0; i < sma_numseg; i++) {
+        RDLOCK(((header_t*)sma_shmaddrs[i])->sma_lock);
+        shmaddr = sma_shmaddrs[i];
+        prv = BLOCKAT(ALIGNWORD(sizeof(header_t)));
+
+        link = &info->list[i];
+
+        /* For each block in this segment */
+        while (prv->next != 0) {
+            block_t* cur = BLOCKAT(prv->next);
+#ifdef __APC_SMA_DEBUG__
+            CHECK_CANARY(cur);
+#endif
+
+            *link = apc_emalloc(sizeof(apc_sma_link_t));
+            (*link)->size = cur->size;
+            (*link)->offset = prv->next;
+            (*link)->next = NULL;
+            link = &(*link)->next;
+
+            prv = cur;
+        }
+        UNLOCK(((header_t*)sma_shmaddrs[i])->sma_lock);
+    }
+
+    return info;
+}
+/* }}} */
+
+/* {{{ apc_sma_free_info */
+void apc_sma_free_info(apc_sma_info_t* info)
+{
+    int i;
+
+    for (i = 0; i < info->num_seg; i++) {
+        apc_sma_link_t* p = info->list[i];
+        while (p) {
+            apc_sma_link_t* q = p;
+            p = p->next;
+            apc_efree(q);
+        }
+    }
+    apc_efree(info->list);
+    apc_efree(info);
+}
+/* }}} */
+
+/* {{{ apc_sma_get_avail_mem */
+size_t apc_sma_get_avail_mem()
+{
+    size_t avail_mem = 0;
+    int i;
+    
+    for (i = 0; i < sma_numseg; i++) {
+        header_t* header = (header_t*) sma_shmaddrs[i];
+        avail_mem += header->avail;
+    }
+    return avail_mem;
+}
+/* }}} */
+
+#if ALLOC_DISTRIBUTION
+size_t *apc_sma_get_alloc_distribution(void) {
+    header_t* header = (header_t*) sma_shmaddrs[0];
+    return header->adist; 
+}
+#endif
+
+#if 0
+/* {{{ apc_sma_check_integrity */
+void apc_sma_check_integrity()
+{
+    int i;
+
+    /* For each segment */
+    for (i = 0; i < sma_numseg; i++) {
+        char* shmaddr = sma_shmaddrs[i];
+        header_t* header = (header_t*) shmaddr;
+        block_t* prv = BLOCKAT(ALIGNWORD(sizeof(header_t)));
+        int avail = 0;
+
+        /* For each block in this segment */
+        while (prv->next != 0) {
+            block_t* cur = BLOCKAT(prv->next);
+            avail += cur->size;
+            prv = cur;
+        }
+
+        assert(avail == header->avail);
+    }
+}
+/* }}} */
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_sma.h php-5.2.5/ext/apc/apc_sma.h
--- php-5.2.5-orig/ext/apc/apc_sma.h    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_sma.h 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,82 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_sma.h,v 1.18 2007/05/11 01:46:31 shire Exp $ */
+
+#ifndef APC_SMA_H
+#define APC_SMA_H
+
+#define ALLOC_DISTRIBUTION 0
+
+#include "apc.h"
+
+/* Simple shared memory allocator */
+
+extern void apc_sma_init(int numseg, size_t segsize, char *mmap_file_mask);
+extern void apc_sma_cleanup();
+extern void* apc_sma_malloc(size_t size);
+extern void* apc_sma_realloc(void* p, size_t size);
+extern char* apc_sma_strdup(const char *s);
+extern void apc_sma_free(void* p);
+#if ALLOC_DISTRIBUTION 
+extern size_t *apc_sma_get_alloc_distribution();
+#endif
+
+/* {{{ struct definition: apc_sma_link_t */
+typedef struct apc_sma_link_t apc_sma_link_t;
+struct apc_sma_link_t {
+    long size;               /* size of this free block */
+    long offset;             /* offset in segment of this block */
+    apc_sma_link_t* next;   /* link to next free block */
+};
+/* }}} */
+
+/* {{{ struct definition: apc_sma_info_t */
+typedef struct apc_sma_info_t apc_sma_info_t;
+struct apc_sma_info_t {
+    int num_seg;            /* number of shared memory segments */
+    long seg_size;           /* size of each shared memory segment */
+    apc_sma_link_t** list;  /* there is one list per segment */
+};
+/* }}} */
+
+extern apc_sma_info_t* apc_sma_info(zend_bool limited);
+extern void apc_sma_free_info(apc_sma_info_t* info);
+
+extern size_t apc_sma_get_avail_mem();
+extern void apc_sma_check_integrity();
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_spin.c php-5.2.5/ext/apc/apc_spin.c
--- php-5.2.5-orig/ext/apc/apc_spin.c   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_spin.c        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,65 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2007 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: apc_spin.c,v 3.1 2007/01/29 07:39:02 shire Exp $ */
+
+#include "apc_spin.h"
+
+#ifdef APC_SPIN_LOCKS
+
+slock_t *apc_slock_create(slock_t *lock) 
+{
+   S_INIT_LOCK(lock); 
+}
+
+void apc_slock_destroy(slock_t *lock)
+{
+    S_LOCK_FREE(lock);
+}
+
+void apc_slock_lock(slock_t *lock)
+{
+    S_LOCK(lock);
+}
+
+void apc_slock_unlock(slock_t *lock)
+{
+    S_UNLOCK(lock);
+}
+
+zend_bool apc_slock_nonblocking_lock(slock_t *lock)
+{
+    /* Technically we aren't supposed to call this directly, but the original
+     *  code provides no method for absolute non-blocking locks, so we'll call into
+     *  the TAS (test and set) functionality directly 
+     */
+    return !(TAS(lock));  /* if TAS returns 0 we obtained the lock, otherwise we failed */
+}
+
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_spin.h php-5.2.5/ext/apc/apc_spin.h
--- php-5.2.5-orig/ext/apc/apc_spin.h   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_spin.h        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,48 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2007 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: apc_spin.h,v 3.1 2007/01/29 07:39:02 shire Exp $ */
+
+#ifndef APC_SPIN_H
+#define APC_SPIN_H
+
+#include "apc.h"
+
+#ifdef APC_SPIN_LOCKS 
+
+#include "pgsql_s_lock.h"
+
+pthread_mutex_t *apc_spin_create();
+void apc_spin_destroy(pthread_mutex_t *lock);
+void apc_spin_lock(pthread_mutex_t *lock);
+void apc_spin_unlock(pthread_mutex_t *lock);
+zend_bool apc_spin_nonblocking_lock(pthread_mutex_t *lock);
+
+#endif
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_stack.c php-5.2.5/ext/apc/apc_stack.c
--- php-5.2.5-orig/ext/apc/apc_stack.c  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_stack.c       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,105 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_stack.c,v 3.4 2006/03/12 00:31:45 rasmus Exp $ */
+
+#include "apc_stack.h"
+#include "apc.h"
+
+struct apc_stack_t {
+    void** data;
+    int capacity;
+    int size;
+};
+
+apc_stack_t* apc_stack_create(int size_hint)
+{
+    apc_stack_t* stack = (apc_stack_t*) apc_emalloc(sizeof(apc_stack_t));
+
+    stack->capacity = (size_hint > 0) ? size_hint : 10;
+    stack->size = 0;
+    stack->data = (void**) apc_emalloc(sizeof(void*) * stack->capacity);
+
+    return stack;
+}
+
+void apc_stack_destroy(apc_stack_t* stack)
+{
+    if (stack != NULL) {
+        apc_efree(stack->data);
+        apc_efree(stack);
+    }
+}
+
+void apc_stack_clear(apc_stack_t* stack)
+{
+    assert(stack != NULL);
+    stack->size = 0;
+}
+
+void apc_stack_push(apc_stack_t* stack, void* item)
+{
+    assert(stack != NULL);
+    if (stack->size == stack->capacity) {
+        stack->capacity *= 2;
+        stack->data = apc_erealloc(stack->data, sizeof(void*)*stack->capacity);
+    }
+    stack->data[stack->size++] = item;
+}
+
+void* apc_stack_pop(apc_stack_t* stack)
+{
+    assert(stack != NULL && stack->size > 0);
+    return stack->data[--stack->size];
+}
+
+void* apc_stack_top(apc_stack_t* stack)
+{
+    assert(stack != NULL && stack->size > 0);
+    return stack->data[stack->size-1];
+}
+
+void* apc_stack_get(apc_stack_t* stack, int n)
+{
+    assert(stack != NULL && stack->size > n);
+    return stack->data[n];
+}
+
+int apc_stack_size(apc_stack_t* stack)
+{
+    assert(stack != NULL);
+    return stack->size;
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_stack.h php-5.2.5/ext/apc/apc_stack.h
--- php-5.2.5-orig/ext/apc/apc_stack.h  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_stack.h       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,58 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          George Schlossnagle <george@omniti.com>                     |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_stack.h,v 3.4 2006/03/12 00:31:45 rasmus Exp $ */
+
+#ifndef APC_STACK_H
+#define APC_STACK_H
+
+/* Basic stack datatype */
+
+#define T apc_stack_t*
+typedef struct apc_stack_t apc_stack_t; /* opaque stack type */
+
+extern T apc_stack_create(int size_hint);
+extern void apc_stack_destroy(T stack);
+extern void apc_stack_clear(T stack);
+extern void apc_stack_push(T stack, void* item);
+extern void* apc_stack_pop(T stack);
+extern void* apc_stack_top(T stack);
+extern void* apc_stack_get(T stack, int n);
+extern int apc_stack_size(T stack);
+
+#undef T
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_zend.c php-5.2.5/ext/apc/apc_zend.c
--- php-5.2.5-orig/ext/apc/apc_zend.c   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_zend.c        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,277 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_zend.c,v 3.14 2007/04/02 22:57:10 rasmus Exp $ */
+
+#include "apc_zend.h"
+#include "apc_globals.h"
+
+void* apc_php_malloc(size_t n)
+{
+    return emalloc(n);
+}
+
+void apc_php_free(void* p)
+{
+    efree(p);
+}
+
+#ifndef ZEND_VM_KIND_CALL /* Not currently defined by any ZE version */
+# define ZEND_VM_KIND_CALL     1
+#endif
+
+#ifndef ZEND_VM_KIND /* Indicates PHP < 5.1 */
+# define ZEND_VM_KIND  ZEND_VM_KIND_CALL
+#endif
+
+#if defined(ZEND_ENGINE_2) && (ZEND_VM_KIND == ZEND_VM_KIND_CALL)
+# define APC_OPCODE_OVERRIDE
+#endif
+
+#ifdef APC_OPCODE_OVERRIDE
+
+#ifdef ZEND_ENGINE_2_1
+/* Taken from Zend/zend_vm_execute.h */
+#define _CONST_CODE  0
+#define _TMP_CODE    1
+#define _VAR_CODE    2
+#define _UNUSED_CODE 3
+#define _CV_CODE     4
+static inline int _apc_opcode_handler_decode(zend_op *opline)
+{
+       static const int apc_vm_decode[] = {
+               _UNUSED_CODE, /* 0              */
+               _CONST_CODE,  /* 1 = IS_CONST   */
+               _TMP_CODE,    /* 2 = IS_TMP_VAR */
+               _UNUSED_CODE, /* 3              */
+               _VAR_CODE,    /* 4 = IS_VAR     */
+               _UNUSED_CODE, /* 5              */
+               _UNUSED_CODE, /* 6              */
+               _UNUSED_CODE, /* 7              */
+               _UNUSED_CODE, /* 8 = IS_UNUSED  */
+               _UNUSED_CODE, /* 9              */
+               _UNUSED_CODE, /* 10             */
+               _UNUSED_CODE, /* 11             */
+               _UNUSED_CODE, /* 12             */
+               _UNUSED_CODE, /* 13             */
+               _UNUSED_CODE, /* 14             */
+               _UNUSED_CODE, /* 15             */
+               _CV_CODE      /* 16 = IS_CV     */
+       };
+       return (opline->opcode * 25) + (apc_vm_decode[opline->op1.op_type] * 5) + apc_vm_decode[opline->op2.op_type];
+}
+
+# define APC_ZEND_OPLINE                                       zend_op *opline = execute_data->opline;
+# define APC_OPCODE_HANDLER_DECODE(opline)     _apc_opcode_handler_decode(opline)
+# if PHP_MAJOR_VERSION >= 6
+#  define APC_OPCODE_HANDLER_COUNT                     ((25 * 152) + 1)
+# else
+#  define APC_OPCODE_HANDLER_COUNT                     ((25 * 151) + 1)
+# endif
+# define APC_REPLACE_OPCODE(opname)         { int i; for(i = 0; i < 25; i++) if (zend_opcode_handlers[(opname*25) + i]) zend_opcode_handlers[(opname*25) + i] = apc_op_##opname; }
+
+#else /* ZE2.0 */
+# define APC_ZEND_ONLINE
+# define APC_OPCODE_HANDLER_DECODE(opline)     (opline->opcode)
+# define APC_OPCODE_HANDLER_COUNT                      512
+# define APC_REPLACE_OPCODE(opname)                    zend_opcode_handlers[opname] = apc_op_##opname;
+#endif
+
+static opcode_handler_t *apc_original_opcode_handlers;
+static opcode_handler_t apc_opcode_handlers[APC_OPCODE_HANDLER_COUNT];
+
+#define APC_EX_T(offset)                                       (*(temp_variable *)((char*)execute_data->Ts + offset))
+
+static zval *apc_get_zval_ptr(znode *node, zval **freeval, zend_execute_data *execute_data TSRMLS_DC)
+{
+       *freeval = NULL;
+
+       switch (node->op_type) {
+               case IS_CONST:
+                       return &(node->u.constant);
+               case IS_VAR:
+                       return APC_EX_T(node->u.var).var.ptr;
+               case IS_TMP_VAR:
+                       return (*freeval = &APC_EX_T(node->u.var).tmp_var);
+#ifdef ZEND_ENGINE_2_1
+               case IS_CV:
+               {
+                       zval ***ret = &execute_data->CVs[node->u.var];
+
+                       if (!*ret) {
+                               zend_compiled_variable *cv = &EG(active_op_array)->vars[node->u.var];
+
+                               if (zend_hash_quick_find(EG(active_symbol_table), cv->name, cv->name_len+1, cv->hash_value, (void**)ret)==FAILURE) {
+                                       apc_nprint("Undefined variable: %s", cv->name);
+                                       return &EG(uninitialized_zval);
+                               }
+                       }
+                       return **ret;
+               }
+#endif
+               case IS_UNUSED:
+               default:
+                       return NULL;
+       }
+}
+
+static int apc_op_ZEND_INCLUDE_OR_EVAL(ZEND_OPCODE_HANDLER_ARGS)
+{
+       APC_ZEND_OPLINE
+       zval *freeop1 = NULL;
+       zval *inc_filename = NULL, tmp_inc_filename;
+       char realpath[MAXPATHLEN];
+       php_stream_wrapper *wrapper;
+       char *path_for_open;
+       int ret = 0;
+       #ifdef ZEND_ENGINE_2
+       apc_opflags_t* flags = NULL;
+       #endif
+
+       if (Z_LVAL(opline->op2.u.constant) != ZEND_INCLUDE_ONCE &&
+               Z_LVAL(opline->op2.u.constant) != ZEND_REQUIRE_ONCE) {
+               return apc_original_opcode_handlers[APC_OPCODE_HANDLER_DECODE(opline)](ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);
+       }
+
+       inc_filename = apc_get_zval_ptr(&opline->op1, &freeop1, execute_data TSRMLS_CC);
+       if (Z_TYPE_P(inc_filename) != IS_STRING) {
+               tmp_inc_filename = *inc_filename;
+               zval_copy_ctor(&tmp_inc_filename);
+               convert_to_string(&tmp_inc_filename);
+               inc_filename = &tmp_inc_filename;
+       }
+
+       wrapper = php_stream_locate_url_wrapper(Z_STRVAL_P(inc_filename), &path_for_open, 0 TSRMLS_CC);
+       if (wrapper != &php_plain_files_wrapper ||
+               !IS_ABSOLUTE_PATH(path_for_open, strlen(path_for_open)) ||
+               !expand_filepath(path_for_open, realpath TSRMLS_CC)) {
+               /* Fallback to original handler */
+               if (inc_filename == &tmp_inc_filename) {
+                       zval_dtor(&tmp_inc_filename);
+               }
+               return apc_original_opcode_handlers[APC_OPCODE_HANDLER_DECODE(opline)](ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);
+       }
+
+       if (zend_hash_exists(&EG(included_files), realpath, strlen(realpath) + 1)) {
+               if (!(opline->result.u.EA.type & EXT_TYPE_UNUSED)) {
+                       ALLOC_INIT_ZVAL(APC_EX_T(opline->result.u.var).var.ptr);
+                       ZVAL_TRUE(APC_EX_T(opline->result.u.var).var.ptr);
+               }
+               if (inc_filename == &tmp_inc_filename) {
+                       zval_dtor(&tmp_inc_filename);
+               }
+               if (freeop1) {
+                       zval_dtor(freeop1);
+               }
+               execute_data->opline++;
+               return 0;
+       }
+
+       if (inc_filename == &tmp_inc_filename) {
+               zval_dtor(&tmp_inc_filename);
+       }
+
+       if(APCG(reserved_offset) != -1) {
+               /* Insanity alert: look into apc_compile.c for why a void** is cast to a apc_opflags_t* */
+               flags = (apc_opflags_t*) & (execute_data->op_array->reserved[APCG(reserved_offset)]);
+       }
+
+#ifdef ZEND_ENGINE_2
+       if(flags && flags->deep_copy == 1) {
+               /* Since the op array is a local copy, we can cheat our way through the file inclusion by temporarily 
+                * changing the op to a plain require/include, calling its handler and finally restoring the opcode.
+                */
+               Z_LVAL(opline->op2.u.constant) = (Z_LVAL(opline->op2.u.constant) == ZEND_INCLUDE_ONCE) ? ZEND_INCLUDE : ZEND_REQUIRE;
+               ret = apc_original_opcode_handlers[APC_OPCODE_HANDLER_DECODE(opline)](ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);
+               Z_LVAL(opline->op2.u.constant) = (Z_LVAL(opline->op2.u.constant) == ZEND_INCLUDE) ? ZEND_INCLUDE_ONCE : ZEND_REQUIRE_ONCE;
+#else 
+       if(0) {
+               /* do nothing, have nothing, be nothing */
+#endif
+       } else {
+               ret = apc_original_opcode_handlers[APC_OPCODE_HANDLER_DECODE(opline)](ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);
+       }
+
+       return ret;
+}
+
+void apc_zend_init(TSRMLS_D)
+{
+    zend_extension dummy_ext;
+#ifdef ZEND_ENGINE_2
+    APCG(reserved_offset) = zend_get_resource_handle(&dummy_ext); 
+    assert(APCG(reserved_offset) == dummy_ext.resource_number);
+    assert(APCG(reserved_offset) != -1);
+    assert(sizeof(apc_opflags_t) <= sizeof(void*));
+#endif
+       if (!APCG(include_once)) {
+               /* If we're not overriding the INCLUDE_OR_EVAL handler, then just skip this malarkey */
+               return;
+       }
+
+       memcpy(apc_opcode_handlers, zend_opcode_handlers, sizeof(apc_opcode_handlers));
+
+       /* 5.0 exposes zend_opcode_handlers differently than 5.1 and later */
+#ifdef ZEND_ENGINE_2_1
+       apc_original_opcode_handlers = zend_opcode_handlers;
+       zend_opcode_handlers = apc_opcode_handlers;
+#else
+       apc_original_opcode_handlers = apc_opcode_handlers;
+#endif
+
+       APC_REPLACE_OPCODE(ZEND_INCLUDE_OR_EVAL);
+}
+
+void apc_zend_shutdown(TSRMLS_D)
+{
+       if (!APCG(include_once)) {
+               /* Nothing changed, nothing to restore */
+               return;
+       }
+
+#ifdef ZEND_ENGINE_2_1
+       zend_opcode_handlers = apc_original_opcode_handlers;
+#else
+       memcpy(zend_opcode_handlers, apc_original_opcode_handlers, sizeof(apc_opcode_handlers));
+#endif
+}
+
+#else /* Opcode Overrides unavailable */
+
+void apc_zend_init(TSRMLS_D) { }
+void apc_zend_shutdown(TSRMLS_D) { }
+
+#endif /* APC_OPCODE_OVERRIDE */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/apc_zend.h php-5.2.5/ext/apc/apc_zend.h
--- php-5.2.5-orig/ext/apc/apc_zend.h   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/apc_zend.h        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,53 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_zend.h,v 3.8 2006/09/01 21:59:16 pollita Exp $ */
+
+#ifndef APC_ZEND_H
+#define APC_ZEND_H
+
+/* Utilities for interfacing with the zend engine */
+
+#include "apc.h"
+#include "apc_php.h"
+
+extern void* apc_php_malloc(size_t n);
+extern void apc_php_free(void* p);
+
+extern void apc_zend_init(TSRMLS_D);
+extern void apc_zend_shutdown(TSRMLS_D);
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/arch/atomic.h php-5.2.5/ext/apc/arch/atomic.h
--- php-5.2.5-orig/ext/apc/arch/atomic.h        1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/arch/atomic.h     2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,38 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: atomic.h,v 1.1 2006/09/29 07:13:01 shire Exp $ */
+
+#ifndef APC_ARCH_ATOMIC_H
+
+#define APC_ARCH_ATOMIC_H
+
+#if defined __x86_64__
+#include "x86_64/atomic.h"
+
+#elif defined __i386__
+#include "i386/atomic.h"
+
+#else
+#error "Unknown or Unsupported Architecture.  If you would like futex suupport for your architecture, please file a request at http://pecl.php.net/bugs/report.php?package=APC"
+
+#endif
+
+
+#endif
diff -ubrN php-5.2.5-orig/ext/apc/arch/i386/atomic.h php-5.2.5/ext/apc/arch/i386/atomic.h
--- php-5.2.5-orig/ext/apc/arch/i386/atomic.h   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/arch/i386/atomic.h        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,79 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: atomic.h,v 1.1 2006/09/29 07:13:01 shire Exp $ */
+
+
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <linux/futex.h>
+
+/* int sys_futex (void *futex, int op, int val, const struct timespec *timeout); */
+static inline long int apc_sys_futex(void *futex, int op, int val, const struct timespec *timeout) {
+
+  long int ret;
+
+  /* i386 system calls are performed with nt 80h operation.
+   *  the argument order is a, b, c, d, S, D  
+   */ 
+  asm volatile ("int $0x80" 
+       : "=a" (ret)
+       : "0" (SYS_futex), 
+         "b" (futex), 
+         "c" (op), 
+         "d" (val),
+         "S" (timeout)
+       : "memory"
+      );
+
+  return ret;
+
+} 
+
+
+static inline int apc_cmpxchg(volatile int *ptr, int old, int new) {
+
+    int prev;
+
+    asm volatile ("LOCK cmpxchgl %1, %2"
+                   : "=a" (prev)
+                   : "r" (new), 
+                     "m" (*(ptr)), 
+                     "0"(old)
+                   : "memory", "cc"
+                 );
+
+    return prev;
+}
+
+static inline int apc_xchg(volatile int *ptr, int new) {
+
+  int ret;
+  
+  asm volatile ("LOCK xchgl %[new], %[ptr]"
+                : "=a" (ret)
+                : [new] "0" (new), 
+                  [ptr] "m" (*(ptr))
+                : "memory"
+               );
+
+  return ret;
+  
+}
+
diff -ubrN php-5.2.5-orig/ext/apc/arch/x86_64/atomic.h php-5.2.5/ext/apc/arch/x86_64/atomic.h
--- php-5.2.5-orig/ext/apc/arch/x86_64/atomic.h 1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/arch/x86_64/atomic.h      2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,80 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: atomic.h,v 1.1 2006/09/29 07:13:01 shire Exp $ */
+
+
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <linux/futex.h>
+
+/* int sys_futex (void *futex, int op, int val, const struct timespec *timeout); */
+static inline long int apc_sys_futex(void *futex, int op, int val, const struct timespec *timeout) {
+
+  long int ret;
+
+  /* x86_64 system calls are performed with the faster SYSCALL operation.
+   *  the argument order is D, S, d, c, b, a rather than
+   *  a, b, c, d, S, D as on the i386 int 80h call. 
+  */ 
+  asm volatile ("syscall" 
+       : "=a" (ret)
+       : "0" (SYS_futex), 
+         "D" (futex), 
+         "S" (op), 
+         "d" (val),
+         "c" (timeout)
+       : "r11", "rcx", "memory"
+      );
+
+  return ret;
+
+} 
+
+
+static inline int apc_cmpxchg(volatile int *ptr, int old, int new) {
+
+    int prev;
+
+    asm volatile ("LOCK cmpxchgl %1, %2"
+                   : "=a" (prev)
+                   : "r" (new), 
+                     "m" (*(ptr)), 
+                     "0"(old)
+                   : "memory", "cc"
+                 );
+
+    return prev;
+}
+
+static inline int apc_xchg(volatile int *ptr, int new) {
+
+    int ret;
+  
+    asm volatile ("LOCK xchgl %[new], %[ptr]"
+                  : "=a" (ret)
+                  : [new] "0" (new), 
+                    [ptr] "m" (*(ptr))
+                  : "memory"
+                 );
+
+    return ret;
+    
+}
+
diff -ubrN php-5.2.5-orig/ext/apc/CHANGELOG php-5.2.5/ext/apc/CHANGELOG
--- php-5.2.5-orig/ext/apc/CHANGELOG    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/CHANGELOG 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,211 @@
+3.0.16: 2007-12-26
+- Fix for longstanding cache-full crash (Christian Seiler)
+  http://news.php.net/php.pecl.dev/4951 for the details
+- Added optional shm unmap on a fatal signal feature (Lucas Nealan)
+- Added PTHREAD_MUTEX_ADAPTIVE_NP option pthread locks (Paul Saab)
+- Minor cleanups (Lucas Nealan)
+- Added configure option to enable apc_cache_info('filehits') (Shire)
+
+3.0.15: 2007-10-18
+- Eliminate a per-request time() syscall (Rasmus)
+- Added rfc1867 prefix, name, and freq ini options (Shire)
+- Allow deletion of individual user cache entries via apc.php (Sara)
+- Fix overzealous cleanup during RSHUTDOWN (Gopal)
+- Fix memory alignment and locking issues (Gopal) 
+- Make apc_compile insert/replace entries (Shire)
+- Make mixed inheritance recompile & cache afresh  (Gopal)
+- Make nostat mode search include_path for canonicalization (Gopal)
+- ZTS & other compile fixes (Gopal, Edin, Shire)
+  
+3.0.14: 2007-03-21
+- Build fix (Shire)
+- Don't hook the upload hook if APC is disabled (Rasmus)
+- Local shadow cache support (Gopal)
+- Avoid uneccessary loops over op_arrays for "known" auto-globals (Gopal)
+- Fix apc_add() to overwrite timed out user entries (Rasmus)
+- Fix double inclusion of files with conditional classes in php4 (Gopal)
+- Allocator fixes to reduce fragmentation (Gopal)
+
+3.0.13: 2007-02-24
+- File upload progress (Rasmus)
+- Pthread mutex and spin locks (Shire)
+- Recursive zval support for apc_fetch/_store (Shire, Gopal)
+- apc.stat_ctime flag for ctime checks (Rasmus)
+- Multiple key fetches with apc_fetch (Shire)
+- Canary checks for shm memory deallocation (Gopal)
+- Add hooks for external optimizer (Shire)
+- Obsolete and remove apc optimizer (Gopal)
+- APC info changes - cache insert rate, hit and miss rates (Shire)
+- Fix apc_load_constants (Gopal)
+- Rewrite dump opcode code to use vld (Gopal)
+- Use apc_[ewn]print functions for error reporting (Shire) 
+- Auto global fixes and refactoring (Gopal, Shire)
+- Fix memory leaks in object serialization (Ilia)
+- Memory cleanup code for destructor order (Gopal)
+- Win32 build fixes (Ilia, Wez)
+- ZTS and Php 4 build fixes (Bjori)
+- Add apc_add() function (Rasmus)
+- Add optional limited flag to apc_sma_info() (Rasmus)
+
+3.0.12p2: 2006-09-05
+- Package version up
+
+3.0,12p1: 2006-09-05
+- PHP4 build fixes
+
+3.0.12: 2006-09-05
+- PHP 5.2 compatibility (Gopal)
+- TSRM fixes (Gopal)
+- Add extra flags to op_array->reserved to improve op array 
+  processing code (Gopal)
+- Fix crashes in optimizer and cli mode (Ilia)
+- Optimizer fixes for PHP5 (Ilia, Gopal)
+- Allow multiple inclusions of a file with a dynamic class (Gopal)
+- Php 4 function table and properties fixes (Gopal)
+- Fix memory leaks in apc_cache_info (Gopal)
+
+3.0.11: 2006-08-16
+- Made --enable-apc-mmap the default compile option (for real this time)
+- Add an optional flag to apc_cache_info() and some apc.php tweaks to make it
+  only fetch header information to make it useful when you have tens of
+  thousands of entries.  (Brian Shire)
+- 64-bit fixes (George)
+- Don't mix Full Path and Inode keys (George)
+- Override ZEND_INCLUDE_OR_EVAL opcode (when possible) to speed up use of
+  require_once() and include_once() statements. (Sara)
+- Add a non-blocking write_lock for cache inserts.  This is a better approach
+  to prevent cache slams and deprecates the slam_defense setting. (Rasmus)
+- A bit of work on the optimizer.  (Sara)
+- Various memory issues resolved. (Gopal)
+
+3.0.10: 2006-03-11
+- Add apc.stat ini flag which defaults to 1.  If set to 0, the main script and any fullpath
+  includes will not be stat'ed for any changes.  You will have to restart the server if you
+  change anything.  This mode increases performance quite a bit, especially if you have a
+  lot of includes.
+
+- Get rid of the lock safety net hack I added in 3.0.9.  It seems to cause more problems
+  than it solves.  I'll need to revisit locking and signal handling at some point soon.
+
+3.0.9: 2006-03-04
+- Eliminate rand() call when slam_defense is not set (Rasmus)
+- Fix for __isset problem (Gopal)
+- Rewrite allocator from a "best fit" to a "next fit" algorithm (Rasmus)
+- Added a Cache Full counter so we have an idea how many times the segment has filled up causing an expunge (Rasmus)
+- Report back the correct number of available bytes in the segment instead of the allocated bytes. (Rasmus)
+- Add cache busy flag which is set when an expunge is underway (Rasmus)
+- Add automatic serialization of objects in apc_store() (Marcus)
+- 64-bit .ini flag fix (Rasmus)
+- Static members fix (Gopal)
+- sma_cleanup() mem leak fix (Rasmus)
+- Fix for http://pecl.php.net/bugs/5311 (Rasmus)
+- Fix autoglobals JIT bug (Gopal)
+- Fix instance bug (Gopal)
+- Add a lock cleanup safety net to request shutdown (Rasmus)
+- Fix apc.slam_defense edge-case bug (Rasmus)
+- User entry memory usage tracking support (Ilia)
+- Allow keys used in apc_store/apc_fetch/apc_delete to be binary safe and prevent conflicts between keys that are found at the start of other keys. (Ilia)
+
+3.0.8: 2005-08-24
+Fix invalid free in globals destructor introduced in 3.0.7 (Rasmus)
+Cache corruption fix in cache-full cleanup code (Gopal)
+
+3.0.7: 2005-08-16
+- Fix to apc.php to show final segment in frag chart. (Ilia)
+- A couple of win32 fixes. (Frank)
+- Add apc.enable_cli ini directive. (Rasmus)
+- Add test cases. (Marcus)
+- Fix apc_define_constants() bug - http://pecl.php.net/bugs/5084 (Rasmus)
+- Simplify user cache handling by removing the user_cache_stack (Rasmus)
+- Fix apc_fetch() memory corruption (Andrei,Rasmus)
+- Added apc.max_file_size INI setting that allows exclusion of large files from being cached. Default file size limit, 1 megabyte. (Ilia)
+
+3.0.6: 2005-07-30
+- Added apc.php to package.xml file.
+- Track per-entry memory usage. (Val)
+- Various apc.php fixes and enhancements. (Ralf, Ilia, Rasmus)
+- fcntl locking robustness fixes. (Rasmus)
+- Shared read-locks where possible. (Rasmus)
+- Added file_update_protection configuration parameter. (Rasmus)
+- Windows ZTS fixes (Frank)
+
+3.0.5: 2005-07-27
+- Make it easier for sapis that only populate file_handle->filename to use APC. (Rasmus)
+- Support extensions such as bcompiler that need to hook into compile_file. (Val)
+- Ralf Becker's apcgui code has now become the default apc.php status page. (Ralf, Rasmus, Ilia)
+- Segfault in cache cleanup code (Ilia, Rasmus)
+
+3.0.4: 2005-07-18
+- Add win32 support (Edin )
+- Add --with-apxs switch to work around problem when loading APC into Apache binary compiled with LFS switches (Rasmus)
+- A couple of other minor fixes
+
+3.0.3: 2005-07-05
+- Fix compile problem against PHP 5.0.x
+
+3.0.2: 2005-07-05
+- Better shm error message
+
+3.0.1: 2005-07-05
+- PHP4 build fix
+
+3.0: 2005-06-23
+- PHP 5.1 support (Arun, Gopal, Rasmus)
+- Major Inheritance bug fix (Arun, Gopal)
+
+2.0: 2003-02-10
+- ground-up rewrite sharing none of the original source code (djc)
+
+1.0.10:
+- merge mmap / shm code to be in one file, module supports both modes now [mpb 2001-05-15]
+- added apc.mode config parameter [mpb 2001-05-15] NOTE: You'll have to add
+  this parameter to your php.ini file to activate apc shm or mmap caching
+- generic source cleanup (missing includes, PATH_MAX usage etc) [mpb
+  2001-05-15]
+- fixed: realpath return result checking in generate_key [mpb 2001-05-15]
+- updated: gui updated (extras/apc_gui-1.0.2.tar.gz)
+- experminental 'fast' cache-retrieval [djc 2001-05-20]
+- fixed regex support [gws 2001-05-16]
+- enhanced reader-writer lock support [rg 2001-05-07]
+
+1.0.9:
+- fixed (?) memory alignment bug on 64 bit archiecures 
+- added many cache visibiliy functions 
+- added opional fcntl locks under shm version 
+- numerous bug fixes 
+
+1.0.8:
+- added ability to detect and decompile compiled files placed as 'source'
+  [gws,dw 2001-01-30]
+- fixed apc_rstat bug [gws 2001-01-29]
+- added hack to support included urls [gws 2001-01-30]
+- fixed apc_cache_index [mb 2001-01-31]
+- added multiple regex support [gs 2001-02-03]
+- added apc_cache_info [mb,gs 2001-02-03]
+
+1.0.7:
+- partially fixed for Solaris [gws 2001-01-29]
+- fixed mtime support for relative includes [gws 2001-01-29]
+- code cleanup [yg,ta,gws 2001-01-29]
+
+1.0.6:
+- support for mtime in mmap [yg,gws 2001-01-27]
+- fixed indexed-array initialization bug [djc,gws 2001-01-27]
+
+1.0.5:
+- support for relative include paths [djc,gws 2001-01-19]
+- class member array support fixed [djc 2001-01-18]
+- added apc_cache_index [gws 2001-01-18]
+
+1.0.4:
+- support for class hierarchies greater than two levels deep [djc 2001-01-17]
+
+1.0.3:
+- fixed support for class inheritance [djc 2001-01-16]
+
+1.0.2:
+- support for inherited classes [gws 2001-01-15]
+- support for intialization of class variables and objects [gws 2001-01-13]
+
+1.0.1:
+- added optional file modification time check [djc 2001-01-12]
diff -ubrN php-5.2.5-orig/ext/apc/config.m4 php-5.2.5/ext/apc/config.m4
--- php-5.2.5-orig/ext/apc/config.m4    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/config.m4 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,238 @@
+dnl
+dnl $Id: config.m4,v 3.30 2007/12/26 22:31:20 rasmus Exp $
+dnl
+
+AC_MSG_CHECKING(whether apc needs to get compiler flags from apxs)
+AC_ARG_WITH(apxs,
+[  --with-apxs[=FILE]      Get compiler flags from apxs -q.  Provide the
+                          pathname to the Apache apxs tool; defaults to "apxs".],[
+  if test "$withval" != "no"; then
+    if test "$withval" = "yes"; then
+      APXS=apxs
+      $APXS -q CFLAGS >/dev/null 2>&1
+      if test "$?" != "0" && test -x /usr/sbin/apxs; then #SUSE 6.x
+        APXS=/usr/sbin/apxs
+      elif test -x /usr/bin/apxs2;  then
+        APXS=/usr/bin/apxs2
+      elif test -x /usr/sbin/apxs2; then
+        APXS=/usr/sbin/apxs2
+      fi
+    else
+      PHP_EXPAND_PATH($withval, APXS)
+    fi
+
+    $APXS -q CFLAGS >/dev/null 2>&1
+    if test "$?" != "0"; then
+      AC_MSG_RESULT()
+      AC_MSG_RESULT()
+      AC_MSG_RESULT([Sorry, I was not able to successfully run APXS.  Possible reasons:])
+      AC_MSG_RESULT()
+      AC_MSG_RESULT([1.  Perl is not installed;])
+      AC_MSG_RESULT([2.  Apache was not compiled with DSO support (--enable-module=so);])
+      AC_MSG_RESULT([3.  'apxs' is not in your path.  Try to use --with-apxs=/path/to/apxs])
+      AC_MSG_RESULT([The output of $APXS follows])
+      $APXS -q CFLAGS
+      AC_MSG_ERROR([Aborting])
+    fi
+
+    APC_CFLAGS=`$APXS -q CFLAGS`
+    AC_MSG_RESULT(yes)
+  else
+    AC_MSG_RESULT(no)
+  fi
+],[
+  AC_MSG_RESULT(no)
+])
+
+PHP_ARG_ENABLE(apc, whether to enable APC support,
+[  --enable-apc           Enable APC support])
+
+AC_MSG_CHECKING(Checking whether we should enable cache request file info)
+AC_ARG_ENABLE(apc-filehits,
+[  --enable-apc-filehits   Enable per request file info about files used from the APC cache (ie: apc_cache_info('filehits')) ],
+[
+  PHP_APC_FILEHITS=$enableval
+       AC_MSG_RESULT($enableval)
+], 
+[
+  PHP_APC_FILEHITS=no
+       AC_MSG_RESULT(no)
+])
+
+
+
+AC_MSG_CHECKING(Checking whether we should use mmap)
+AC_ARG_ENABLE(apc-mmap,
+[  --disable-apc-mmap
+                          Disable mmap support and use IPC shm instead],
+[
+  PHP_APC_MMAP=$enableval
+  AC_MSG_RESULT($enableval)
+], [
+  PHP_APC_MMAP=yes
+  AC_MSG_RESULT(yes)
+])
+
+AC_MSG_CHECKING(Checking whether we should use semaphore locking instead of fcntl)
+AC_ARG_ENABLE(apc-sem,
+[  --enable-apc-sem
+                          Enable semaphore locks instead of fcntl],
+[
+  PHP_APC_SEM=$enableval
+  AC_MSG_RESULT($enableval)
+], [
+  PHP_APC_SEM=no
+  AC_MSG_RESULT(no)
+])
+
+AC_MSG_CHECKING(Checking whether we should use futex locking)
+AC_ARG_ENABLE(apc-futex,
+[  --enable-apc-futex
+                          Enable linux futex based locks  EXPERIMENTAL ],
+[
+  PHP_APC_FUTEX=$enableval
+  AC_MSG_RESULT($enableval)
+],
+[
+  PHP_APC_FUTEX=no
+  AC_MSG_RESULT(no)
+])
+
+if test "$PHP_APC_FUTEX" != "no"; then
+       AC_CHECK_HEADER(linux/futex.h, , [ AC_MSG_ERROR([futex.h not found.  Please verify you that are running a 2.5 or older linux kernel and that futex support is enabled.]); ] )
+fi
+
+AC_MSG_CHECKING(Checking whether we should use pthread mutex locking)
+AC_ARG_ENABLE(apc-pthreadmutex,
+[  --disable-apc-pthreadmutex
+                          Disable pthread mutex locking ],
+[
+  PHP_APC_PTHREADMUTEX=no
+  AC_MSG_RESULT(no)
+],
+[
+  PHP_APC_PTHREADMUTEX=yes
+  AC_MSG_RESULT(yes)
+])
+if test "$PHP_APC_PTHREADMUTEX" != "no"; then
+       orig_LIBS="$LIBS"
+       LIBS="$LIBS -lpthread"
+       AC_TRY_RUN(
+                       [
+                               #include <sys/types.h>
+                               #include <pthread.h>
+                                main() {
+                               pthread_mutex_t mutex;
+                               pthread_mutexattr_t attr;       
+
+                               if(pthread_mutexattr_init(&attr)) { 
+                                       puts("Unable to initialize pthread attributes (pthread_mutexattr_init).");
+                                       return -1; 
+                               }
+                               if(pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED)) { 
+                                       puts("Unable to set PTHREAD_PROCESS_SHARED (pthread_mutexattr_setpshared), your system may not support shared mutex's.");
+                                       return -1; 
+                               }       
+                               if(pthread_mutex_init(&mutex, &attr)) { 
+                                       puts("Unable to initialize the mutex (pthread_mutex_init).");
+                                       return -1; 
+                               }
+                               if(pthread_mutexattr_destroy(&attr)) { 
+                                       puts("Unable to destroy mutex attributes (pthread_mutexattr_destroy).");
+                                       return -1; 
+                               }
+                               if(pthread_mutex_destroy(&mutex)) { 
+                                       puts("Unable to destroy mutex (pthread_mutex_destroy).");
+                                       return -1; 
+                               }
+
+                               puts("pthread mutex's are supported!");
+                               return 0;
+                                }
+                       ],
+                       [ dnl -Success-
+                               PHP_ADD_LIBRARY(pthread)
+                       ],
+                       [ dnl -Failure-
+                               AC_MSG_WARN([It doesn't appear that pthread mutex's are supported on your system])
+                       PHP_APC_PTHREADMUTEX=no
+                       ],
+                       [
+                               PHP_ADD_LIBRARY(pthread)
+                       ]
+       )
+       LIBS="$orig_LIBS"
+fi
+
+AC_MSG_CHECKING(Checking whether we should use spin locks)
+AC_ARG_ENABLE(apc-spinlocks,
+[  --enable-apc-spinlocks
+                          Enable spin locks  EXPERIMENTAL ],
+[
+  PHP_APC_SPINLOCKS=$enableval
+  AC_MSG_RESULT($enableval)
+],
+[
+  PHP_APC_SPINLOCKS=no
+  AC_MSG_RESULT(no)
+])
+
+if test "$PHP_APC" != "no"; then
+  test "$PHP_APC_MMAP" != "no" && AC_DEFINE(APC_MMAP, 1, [ ])
+  test "$PHP_APC_FILEHITS" != "no" && AC_DEFINE(APC_FILEHITS, 1, [ ])
+
+       if test "$PHP_APC_SEM" != "no"; then
+               AC_DEFINE(APC_SEM_LOCKS, 1, [ ])
+       elif test "$PHP_APC_FUTEX" != "no"; then
+               AC_DEFINE(APC_FUTEX_LOCKS, 1, [ ])
+       elif test "$PHP_APC_SPINLOCKS" != "no"; then
+               AC_DEFINE(APC_SPIN_LOCKS, 1, [ ]) 
+       elif test "$PHP_APC_PTHREADMUTEX" != "no"; then 
+               AC_DEFINE(APC_PTHREADMUTEX_LOCKS, 1, [ ])
+       fi
+
+  AC_CHECK_FUNCS(sigaction)
+  AC_CACHE_CHECK(for union semun, php_cv_semun,
+  [
+    AC_TRY_COMPILE([
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+    ], [union semun x;], [
+      php_cv_semun=yes
+    ],[
+      php_cv_semun=no
+    ])
+  ])
+  if test "$php_cv_semun" = "yes"; then
+    AC_DEFINE(HAVE_SEMUN, 1, [ ])
+  else
+    AC_DEFINE(HAVE_SEMUN, 0, [ ])
+  fi
+
+  apc_sources="apc.c php_apc.c \
+               apc_cache.c \
+               apc_compile.c \
+               apc_debug.c \
+               apc_fcntl.c \
+               apc_main.c \
+               apc_mmap.c \
+               apc_sem.c \
+               apc_shm.c \
+               apc_futex.c \
+               apc_pthreadmutex.c \
+               apc_spin.c \
+               pgsql_s_lock.c \
+               apc_sma.c \
+               apc_stack.c \
+               apc_zend.c \
+               apc_rfc1867.c \
+               apc_signal.c "
+
+  PHP_CHECK_LIBRARY(rt, shm_open, [PHP_ADD_LIBRARY(rt,,APC_SHARED_LIBADD)])
+  PHP_NEW_EXTENSION(apc, $apc_sources, $ext_shared,, \\$(APC_CFLAGS))
+  PHP_SUBST(APC_SHARED_LIBADD)
+  PHP_SUBST(APC_CFLAGS)
+  AC_DEFINE(HAVE_APC, 1, [ ])
+fi
+
diff -ubrN php-5.2.5-orig/ext/apc/INSTALL php-5.2.5/ext/apc/INSTALL
--- php-5.2.5-orig/ext/apc/INSTALL      1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/INSTALL   2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,422 @@
+Installation Instructions for APC
+---------------------------------
+
+This version of APC should work on PHP 4.3.0 - 4.4.x and
+5.1.0 - 5.2.x.  Yes, that means PHP 5.0.x is no longer 
+supported.  Upgrade to PHP 5.1.x or 5.2.x and you will 
+notice all sorts of performance increases.
+
+CVS Instructions
+----------------
+Building from CVS can be done like this:
+
+  cvs -d :pserver:cvsread@cvs.php.net:/repository login
+  Password: phpfi
+  cvs -d :pserver:cvsread@cvs.php.net:/repository co pecl/apc
+  cd pecl/apc
+  phpize
+  ./configure --enable-apc-mmap --with-apxs --with-php-config=/usr/local/php/bin/php-config
+  make
+  make install
+
+Suggested Configuration (in your php.ini file)
+----------------------------------------------
+  extension=apc.so
+  apc.enabled=1
+  apc.shm_segments=1
+  apc.shm_size=128
+  apc.ttl=7200
+  apc.user_ttl=7200
+  apc.num_files_hint=1024
+  apc.mmap_file_mask=/tmp/apc.XXXXXX
+  apc.enable_cli=1
+
+These are fully described at the bottom of this file.
+
+PHP 4 Optimization
+------------------
+If you are trying to get every little bit of speed out of PHP4+APC, you need
+to tell APC where to find your httpd.h file and also add -DAPC_PHP4_STAT to
+your CPPFLAGS.  (if you don't have httpd.h, install the apache_dev package 
+for your OS) and do:
+  export CPPFLAGS="-I/usr/include/apache-1.3 -DAPC_PHP4_STAT" (for bash on Debian)
+  setenv CPPFLAGS "-I/usr/include/apache-1.3 -DAPC_PHP4_STAT" (for tsch on Debian)
+and then re-run your configure script.
+
+This optimization saves a stat syscall on the main script file.  In PHP5 this
+optimization is automatic and doesn't need any special build flags.
+
+The second thing you are going to want to do to save another syscall is to 
+compile using the --with-apxs configure switch.  This should work for both
+Apache1 and Apache2.  Point it directly at your apxs2 script for Apache2.
+eg. --with-apxs=/usr/local/bin/apxs2
+
++---------------------+
+| QUICK INSTALL (DSO) |
++---------------------+
+
+These instructions assume your PHP installation is located in /usr/local/php and you
+want Apache optimizations (--with-apxs).
+
+$ gunzip -c apc_x.y.tar.gz | tar xf -
+$ cd apc_x.y
+$ /usr/local/php/bin/phpize
+$ ./configure --enable-apc --enable-apc-mmap --with-apxs --with-php-config=/usr/local/php/bin/php-config
+$ make
+$ make install
+
+You will probably need to run the final command (make install) as root.
+
+The above sequence of commands will install a .so file in your PHP
+installation extension directory. The output of make install should display
+that path to the screen.
+
+Next you must edit your php.ini file, which is normally located in
+/usr/local/php/lib/php.ini, and add the following line:
+
+    extension="apc.so"
+
+Replace "/path/to/php/extensions" with whatever path was displayed when you
+ran make install above.
+
+Then restart your web server and consult the output of phpinfo(). If there is
+an informational section for APC, the installation was successful.
+
++------------------------+
+| QUICK INSTALL (Static) |
++------------------------+
+
+APC will not successfully compile on all systems as a DSO. If you run into
+problems using the DSO quick install, you can try to compile it statically
+into PHP. (The DSO install is recommended, though.)
+
+These instructions assume the current directory is the root of the PHP source
+tree, and that you have already configured PHP by running its bundled
+configure script.
+
+$ cd ext
+$ gunzip -c apc_x.y.tar.gz | tar xf -
+$ cd ..
+$ ./buildconf
+$ ./config.nice
+$ make
+$ make install
+
+Once this is complete, simply restart your web server. You do not need to
+modify your php.ini file to enable APC.
+
++-----------------+
+| VERBOSE INSTALL |
++-----------------+
+
+These instructions assume your PHP installation is located in /usr/local/php.
+
+1.  Unpack your distribution file.
+
+    You will have downloaded a file named something like apc_x.y.tar.gz.
+    Unzip this file with a command like
+    
+        gunzip apc_x.y.tar.gz
+    
+    Next you have to untar it with
+    
+        tar xvf apc_x.y.tar
+
+    This will create an apc_x.y directory. cd into this new directory:
+
+        cd apc_x.y
+
+2.  Run phpize.
+
+    phpize is a script that should have been installed with PHP, and is
+    normally located in /usr/local/php/bin assuming you installed PHP in
+    /usr/local/php. (If you do not have the phpize script, you must reinstall
+    PHP and be sure not to disable PEAR.)
+
+    Run the phpize command:
+    
+        /usr/local/php/bin/phpize
+
+    Its output should resemble this:
+
+        autoheader: `config.h.in' is created
+        You should update your `aclocal.m4' by running aclocal.
+        Configuring for:
+          PHP Api Version:   20020918
+          Zend Module Api No:   20020429
+          Zend Extension Api No:   20021010
+ 
+    phpize should create a configure script in the current directory. If you
+    get errors instead, you might be missing some required development tools,
+    such as autoconf or libtool. You can try downloading the latest versions
+    of those tools and running phpize again.
+ 
+3.  Run the configure script.
+ 
+    phpize creates a configure script. The only option you need to specify is
+    the location of your php-config script:
+
+        ./configure --enable-apc
+
+    php-config should be located in the same directory as phpize.
+
+    If you prefer to use mmap instead of the default IPC shared memory support,
+    add --enable-apc-mmap to your configure line. 
+
+       If you prefer to use sysv IPC semaphores over the safer fcntl() locks, add
+       --enable-sem to your configure line.  If you don't have a problem
+       with your server segaulting, or any other unnatural accumulation of
+       semaphores on your system, the semaphore based locking is slightly faster.
+
+4.  Compile and install the files. Simply type: make install
+
+    (You may need to be root in order to install)
+
+    If you encounter errors from libtool or gcc during this step, please
+    contact the project maintainer (dcowgill@php.net).
+
+5.  Edit your php.ini
+
+    make install should have printed a line resembling the following:
+
+        Installing shared extensions: /path/to/extension/
+
+    Copy the path /path/to/extension/ and add the following line to your
+    php.ini file (normally located in /usr/local/php/lib/php.ini):
+
+        extension="apc.so"
+
+    If you don't have a php.ini file in that location, you can create it now.
+
+6.  Restart the web server and test the installation.
+
+    Restart your web server now (for apache, it's apachectl restart) and
+    create a small test PHP file in your document root. The file should
+    contain just the following line:
+
+        <?php phpinfo() ?>
+
+    Request that file in a web browser. If there is an entry for APC in the
+    list of installed modules, the installation was successful.
+
+    If APC is not listed, consult your web server error log. If it contains an
+    error message saying that it can't load the APC extension, your system
+    might not be able to load shared libraries created with PHP's build
+    system. One alternative would be to compile APC statically into PHP. See
+    the Quick Install (Static) instructions above.
+
+    You should consult your error log anyway to see if APC generated any
+    errors. On BSD-based platforms, it is typical for APC to be unable to
+    allocate the default-sized shared memory segment. See below for hints on
+    raising your system's shared memory limitations.
+
++-----------------+
+| CONFIGURING APC |
++-----------------+
+
+Although the default APC settings are fine for many installations, serious
+users should consider tuning the following parameters:
+
+    OPTION                  DESCRIPTION
+    ------------------      --------------------------------------------------
+    apc.enabled             This can be set to 0 to disable APC. This is
+                            primarily useful when APC is statically compiled
+                            into PHP, since there is no other way to disable
+                            it (when compiled as a DSO, the zend_extension
+                            line can just be commented-out).
+                            (Default: 1)
+                            
+    apc.shm_segments        The number of shared memory segments to allocate
+                            for the compiler cache. If APC is running out of
+                            shared memory but you have already set
+                            apc.shm_size as high as your system allows, you
+                            can try raising this value.  Setting this to a
+                            value other than 1 has no effect in mmap mode
+                            since mmap'ed shm segments don't have size limits.
+                            (Default: 1)
+                            
+    apc.shm_size            The size of each shared memory segment in MB.
+                            By default, some systems (including most BSD
+                            variants) have very low limits on the size of a
+                            shared memory segment.
+                            (Default: 30)
+                            
+    apc.optimization        This option has been deprecated.
+                            (Default: 0)
+    
+    apc.num_files_hint      A "hint" about the number of distinct source files
+                            that will be included or requested on your web
+                            server. Set to zero or omit if you're not sure;
+                            this setting is mainly useful for sites that have
+                            many thousands of source files.
+                            (Default: 1000)
+
+    apc.user_entries_hint   Just like num_files_hint, a "hint" about the number
+                            of distinct user cache variables to store. 
+                            Set to zero or omit if you're not sure;
+                            (Default: 4096)
+
+    apc.ttl                 The number of seconds a cache entry is allowed to
+                            idle in a slot in case this cache entry slot is 
+                            needed by another entry.  Leaving this at zero
+                            means that your cache could potentially fill up
+                            with stale entries while newer entries won't be
+                            cached.  
+                            (Default: 0)
+
+    apc.user_ttl            The number of seconds a user cache entry is allowed 
+                            to idle in a slot in case this cache entry slot is 
+                            needed by another entry.  Leaving this at zero
+                            means that your cache could potentially fill up
+                            with stale entries while newer entries won't be
+                            cached.  
+                            (Default: 0)
+
+
+    apc.gc_ttl              The number of seconds that a cache entry may
+                            remain on the garbage-collection list. This value
+                            provides a failsafe in the event that a server
+                            process dies while executing a cached source file;
+                            if that source file is modified, the memory
+                            allocated for the old version will not be
+                            reclaimed until this TTL reached. Set to zero to
+                            disable this feature.
+                            (Default: 3600)
+
+    apc.cache_by_default    On by default, but can be set to off and used in
+                            conjunction with positive apc.filters so that files
+                            are only cached if matched by a positive filter.
+                            (Default: On)
+
+    apc.filters             A comma-separated list of POSIX extended regular
+                            expressions. If any pattern matches the source
+                            filename, the file will not be cached. Note that
+                            the filename used for matching is the one passed
+                            to include/require, not the absolute path.  If the
+                            first character of the expression is a + then the
+                            expression will be additive in the sense that any
+                            files matched by the expression will be cached, and
+                            if the first character is a - then anything matched
+                            will not be cached.  The - case is the default, so
+                            it can be left off.
+                            (Default: "")
+
+    apc.mmap_file_mask      If compiled with MMAP support by using --enable-mmap
+                            this is the mktemp-style file_mask to pass to the
+                            mmap module for determing whether your mmap'ed memory
+                            region is going to be file-backed or shared memory
+                            backed.  For straight file-backed mmap, set it to
+                            something like /tmp/apc.XXXXXX (exactly 6 X's).
+                            To use POSIX-style shm_open/mmap put a ".shm"
+                            somewhere in your mask.  eg.  "/apc.shm.XXXXXX"
+                            You can also set it to "/dev/zero" to use your 
+                            kernel's /dev/zero interface to anonymous mmap'ed 
+                            memory.  Leaving it undefined will force an 
+                            anonymous mmap.
+                            (Default: "")
+
+    apc.slam_defense        ** DEPRECATED - Use apc.write_lock instead **
+                            On very busy servers whenever you start the server or
+                            modify files you can create a race of many processes
+                            all trying to cache the same file at the same time.
+                            This option sets the percentage of processes that will
+                            skip trying to cache an uncached file.  Or think of it
+                            as the probability of a single process to skip caching.
+                            For example, setting this to 75 would mean that there is
+                            a 75% chance that the process will not cache an uncached
+                            file.  So the higher the setting the greater the defense
+                            against cache slams.  Setting this to 0 disables this
+                            feature.
+                            (Default: 0)
+
+    apc.file_update_protection
+                            When you modify a file on a live web server you really
+                            should do so in an atomic manner.  That is, write to a
+                            temporary file and rename (mv) the file into its permanent
+                            position when it is ready.  Many text editors, cp, tar and
+                            other such programs don't do this.  This means that there
+                            is a chance that a file is accessed (and cached) while it
+                            is still being written to.  This file_update_protection
+                            setting puts a delay on caching brand new files.  The
+                            default is 2 seconds which means that if the modification
+                            timestamp (mtime) on a file shows that it is less than 2
+                            seconds old when it is accessed, it will not be cached.  
+                            The unfortunate person who accessed this half-written file
+                            will still see weirdness, but at least it won't persist.
+                            If you are certain you always atomically update your files
+                            by using something like rsync which does this correctly, you
+                            can turn this protection off by setting it to 0.  If you
+                            have a system that is flooded with io causing some update
+                            procedure to take longer than 2 seconds, you may want to
+                            increase this a bit.
+                            (Default: 2)
+
+    apc.enable_cli          Mostly for testing and debugging.  Setting this enables APC
+                            for the CLI version of PHP.  Normally you wouldn't want to
+                            create, populate and tear down the APC cache on every CLI
+                            request, but for various test scenarios it is handy to be
+                            able to enable APC for the CLI version of APC easily.
+                            (Default: 0)
+
+    apc.max_file_size       Prevents large files from being cached.  
+                            (Default: 1M)
+
+    apc.stat                Whether to stat the main script file and the fullpath
+                            includes.  If you turn this off you will need to restart
+                            your server in order to update scripts.
+                            (Default: 1)
+
+    apc.write_lock          On busy servers when you first start up the server, or when
+                            many files are modified, you can end up with all your processes
+                            trying to compile and cache the same files.  With write_lock 
+                            enabled, only one process at a time will try to compile an
+                            uncached script while the other processes will run uncached
+                            instead of sitting around waiting on a lock.
+                            (Default: 1)
+
+    apc.report_autofilter   Logs any scripts that were automatically excluded from being
+                            cached due to early/late binding issues.
+                            (Default: 0)
+
+    apc.rfc1867             RFC1867 File Upload Progress hook handler is only available
+                            if you compiled APC against PHP 5.2.0 or later.  When enabled
+                            any file uploads which includes a field called 
+                            APC_UPLOAD_PROGRESS before the file field in an upload form
+                            will cause APC to automatically create an upload_<key>
+                            user cache entry where <key> is the value of the 
+                            APC_UPLOAD_PROGRESS form entry.
+
+                            Note that the file upload tracking is not threadsafe at this
+                            point, so new uploads that happen while a previous one is 
+                            still going will disable the tracking for the previous.
+                            (Default: 0)
+
+    apc.rfc1867_prefix      Key prefix to use for the user cache entry generated by
+                            rfc1867 upload progress functionality.  
+                            (Default: "upload_")
+
+    apc.rfc1867_name        Specify the hidden form entry name that activates APC upload
+                            progress and specifies the user cache key suffix.
+                            (Default: "APC_UPLOAD_PROGRESS")
+
+    apc.rfc1867_freq        The frequency that updates should be made to the user cache
+                            entry for upload progress.  This can take the form of a 
+                            percentage of the total file size or a size in bytes 
+                            optionally suffixed with 'k', 'm', or 'g' for kilobytes, 
+                            megabytes, or gigabytes respectively (case insensitive).  
+                            A setting of 0 updates as often as possible, which may cause 
+                            slower uploads.
+                            (Default: 0)
+
+    apc.localcache          This enables a lock-free local process shadow-cache which 
+                            reduces lock contention when the cache is being written to.
+                            (Default: 0)
+                            
+    apc.localcache.size     The size of the local process shadow-cache, should be set to 
+                            a sufficently large value, approximately half of num_files_hint.
+                            (Default: 512)
+    
+    apc.include_once_override 
+                            Optimize include_once and require_once calls and avoid the 
+                            expensive system calls used.
+                            (Default: 0)
diff -ubrN php-5.2.5-orig/ext/apc/LICENSE php-5.2.5/ext/apc/LICENSE
--- php-5.2.5-orig/ext/apc/LICENSE      1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/LICENSE   2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,68 @@
+-------------------------------------------------------------------- 
+                  The PHP License, version 3.01
+Copyright (c) 1999 - 2006 The PHP Group. All rights reserved.
+-------------------------------------------------------------------- 
+
+Redistribution and use in source and binary forms, with or without
+modification, is permitted provided that the following conditions
+are met:
+
+  1. Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+ 
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+ 
+  3. The name "PHP" must not be used to endorse or promote products
+     derived from this software without prior written permission. For
+     written permission, please contact group@php.net.
+  
+  4. Products derived from this software may not be called "PHP", nor
+     may "PHP" appear in their name, without prior written permission
+     from group@php.net.  You may indicate that your software works in
+     conjunction with PHP by saying "Foo for PHP" instead of calling
+     it "PHP Foo" or "phpfoo"
+ 
+  5. The PHP Group may publish revised and/or new versions of the
+     license from time to time. Each version will be given a
+     distinguishing version number.
+     Once covered code has been published under a particular version
+     of the license, you may always continue to use it under the terms
+     of that version. You may also choose to use such covered code
+     under the terms of any subsequent version of the license
+     published by the PHP Group. No one other than the PHP Group has
+     the right to modify the terms applicable to covered code created
+     under this License.
+
+  6. Redistributions of any form whatsoever must retain the following
+     acknowledgment:
+     "This product includes PHP software, freely available from
+     <http://www.php.net/software/>".
+
+THIS SOFTWARE IS PROVIDED BY THE PHP DEVELOPMENT TEAM ``AS IS'' AND 
+ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
+PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE PHP
+DEVELOPMENT TEAM OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+OF THE POSSIBILITY OF SUCH DAMAGE.
+
+-------------------------------------------------------------------- 
+
+This software consists of voluntary contributions made by many
+individuals on behalf of the PHP Group.
+
+The PHP Group can be contacted via Email at group@php.net.
+
+For more information on the PHP Group and the PHP project, 
+please see <http://www.php.net>.
+
+PHP includes the Zend Engine, freely available at
+<http://www.zend.com>.
diff -ubrN php-5.2.5-orig/ext/apc/NOTICE php-5.2.5/ext/apc/NOTICE
--- php-5.2.5-orig/ext/apc/NOTICE       1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/NOTICE    2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,43 @@
+This is the NOTICE file that holds acknowledgements and stuff.
+
+The Alternative PHP Cache (APC) is a free and open opcode cache for PHP.
+This extension is being released under the PHP License for complete compliance
+with PHP and to encourage wide-spread use.  It is our intention that this
+project be kept open source and that all commercial spin-offs contribute their
+modifications back into the public source-tree.
+
+Creators:
+    Daniel Cowgill
+    George Schlossnagle
+
+PHP5 support and major features by:
+    Arun C. Murthy 
+    Gopal Vijayaraghavan
+    Rasmus Lerdorf
+
+This software was contributed to PHP by Community Connect Inc. in 2002
+and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+Future revisions and derivatives of this source code must acknowledge
+Community Connect Inc. as the original contributor of this module by
+leaving this note intact in the source code.
+
+All other licensing and usage conditions are those of the PHP Group.
+
+We would like to thank Community Connect Inc. and Yahoo! Inc. for supporting 
+this project and providing a challenging and stimulating environment in 
+which exciting projects can happen.
+
+Contributors:
+    Mike Bretz          bug fixes, GUI, and lots of work
+    Ricardo Galli       changed read-write locks to prefer readers
+    Yann Grossel        bug fixes
+    Thies Arntzen       bug fixes
+    Sara Golemon        optimizer work
+
+Special Thanks:
+    Florian Baumert     help debugging phplib problems
+    Thomas Duffey       help debugging inheritance issues
+    Vibol Hou           help debugging phplib problems
+    Angel Li            diffs for ANSI comment compliance
+    Christian Rishøj    help debugging phplib problems
+    Sascha Schumann     memory error bug fix
diff -ubrN php-5.2.5-orig/ext/apc/package.xml php-5.2.5/ext/apc/package.xml
--- php-5.2.5-orig/ext/apc/package.xml  1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/package.xml       2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,534 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<package packagerversion="1.4.9" version="2.0" xmlns="http://pear.php.net/dtd/package-2.0" xmlns:tasks="http://pear.php.net/dtd/tasks-1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0 http://pear.php.net/dtd/tasks-1.0.xsd http://pear.php.net/dtd/package-2.0 http://pear.php.net/dtd/package-2.0.xsd">
+ <name>APC</name>
+ <channel>pecl.php.net</channel>
+ <summary>Alternative PHP Cache</summary>
+ <description>APC is a free, open, and robust framework for caching and optimizing PHP intermediate code.</description>
+ <lead>
+  <name>Daniel Cowgill</name>
+  <user>dcowgill</user>
+  <email>dan@mail.communityconnect.com</email>
+  <active>no</active>
+ </lead>
+ <lead>
+  <name>George Schlossnagle</name>
+  <user>gschlossnagle</user>
+  <email>george@omniti.com</email>
+  <active>no</active>
+ </lead>
+ <lead>
+  <name>Rasmus Lerdorf</name>
+  <user>rasmus</user>
+  <email>rasmus@php.net</email>
+  <active>yes</active>
+ </lead>
+ <lead>
+  <name>Gopal Vijayaraghavan</name>
+  <user>gopalv</user>
+  <email>gopalv@php.net</email>
+  <active>yes</active>
+ </lead>
+ <developer>
+  <name>Edin Kadribasic</name>
+  <user>edink</user>
+  <email>edink@emini.dk</email>
+  <active>yes</active>
+ </developer>
+ <developer>
+  <name>Ilia Alshanetsky</name>
+  <user>iliaa</user>
+  <email>ilia@prohost.org</email>
+  <active>yes</active>
+ </developer>
+ <developer>
+  <name>Marcus Börger</name>
+  <user>helly</user>
+  <email>helly@php.net</email>
+  <active>yes</active>
+ </developer>
+ <developer>
+  <name>Sara Golemon</name>
+  <user>pollita</user>
+  <email>pollita@php.net</email>
+  <active>yes</active>
+ </developer>
+ <developer>
+  <name>Brian Shire</name>
+  <user>shire</user>
+  <email>shire@php.net</email>
+  <active>yes</active>
+ </developer>
+ <date>2007-12-26</date>
+ <time>14:51:32</time>
+ <version>
+  <release>3.0.16</release>
+  <api>3.0.0</api>
+ </version>
+ <stability>
+  <release>stable</release>
+  <api>stable</api>
+ </stability>
+ <license uri="http://www.php.net/license">PHP License</license>
+ <notes>* Fix for longstanding cache-full crash (Christian Seiler)
+  http://news.php.net/php.pecl.dev/4951 for the details
+* Added optional shm unmap on a fatal signal feature (Lucas Nealan)
+* Added PTHREAD_MUTEX_ADAPTIVE_NP option pthread locks (Paul Saab)
+* Minor cleanups (Lucas Nealan)
+* Added configure option to enable apc_cache_info(&apos;filehits&apos;) (Shire)</notes>
+ <contents>
+  <dir name="/">
+   <file md5sum="841596cff3b9bd83e79d01ccb591ff55" name="tests/apc_001.phpt" role="test" />
+   <file md5sum="cc1dba4e429ff93dce1ca7dea01c2899" name="tests/apc_002.phpt" role="test" />
+   <file md5sum="411fdc85b170ec696298d38f93132d6b" name="tests/apc_003.phpt" role="test" />
+   <file md5sum="6ecba4154b6bd6f8703000f5198710cc" name="tests/skipif.inc" role="test" />
+   <file md5sum="2a2e8b29dba8df697dbd81b306ccbe73" name="arch/i386/atomic.h" role="src" />
+   <file md5sum="7f01c5cd3a1742c20d6d285f119596a6" name="arch/x86_64/atomic.h" role="src" />
+   <file md5sum="26748a0d6567c5611408eb69fb25c671" name="arch/atomic.h" role="src" />
+   <file md5sum="0714a0039d9ea63cfc26043a7d86f04c" name="CHANGELOG" role="doc" />
+   <file md5sum="3b6ad608e37fb34b24afb90084b4770b" name="INSTALL" role="doc" />
+   <file md5sum="694f49a7e1f276ba75a3dd2c5acd580d" name="LICENSE" role="doc" />
+   <file md5sum="eea150699d3dffb2cdf7d243854189d7" name="NOTICE" role="doc" />
+   <file md5sum="efa40416571fc54aa59912203c0391e6" name="TODO" role="doc" />
+   <file md5sum="b7dd14328e218d3ecc97d85fb83d7ba7" name="TECHNOTES.txt" role="doc" />
+   <file md5sum="c4384f370db6a6112d6c21268bc9a278" name="apc.c" role="src" />
+   <file md5sum="09a525ff9a3850e6de42eee2adf07463" name="apc.dsp" role="src" />
+   <file md5sum="109694ee417962096eb3e962d6bcce8a" name="apc.h" role="src" />
+   <file md5sum="ee19b49ef26dbd491b846a19f9bc9e6a" name="apc_cache.c" role="src" />
+   <file md5sum="e0a4f0c5a49a0beba10f2f831e1b63b6" name="apc_cache.h" role="src" />
+   <file md5sum="7576310688084dd737f7c7bc11c75e22" name="apc_compile.c" role="src" />
+   <file md5sum="a0eea1abcf4ec395ea9a195e98c2cc65" name="apc_compile.h" role="src" />
+   <file md5sum="64bbe1f8cf18261255ef5874039e76e9" name="apc_debug.c" role="src" />
+   <file md5sum="46d182a6122f3c29a1904f62af7cfb51" name="apc_debug.h" role="src" />
+   <file md5sum="3dbdb44d0fc2d45ae15719b4fc5746cd" name="apc_fcntl.c" role="src" />
+   <file md5sum="f4fc86769ce871d42ce0085fa7323d79" name="apc_fcntl.h" role="src" />
+   <file md5sum="9dffe726c9b6cfdd640e07782a0f409b" name="apc_futex.c" role="src" />
+   <file md5sum="ff999238a10bfb6b715e4e8f54ec8326" name="apc_futex.h" role="src" />
+   <file md5sum="33d241202d41095bc1b6fdafc1063cb9" name="apc_globals.h" role="src" />
+   <file md5sum="3e6f98c635b18902aab221f29d8b70ec" name="apc_lock.h" role="src" />
+   <file md5sum="0667187c715fea98569b51a491fb445b" name="apc_main.c" role="src" />
+   <file md5sum="2e8f99d31b4d088eb14859c6e137544a" name="apc_main.h" role="src" />
+   <file md5sum="e9e447ef3994b85d064c9a49f7ed0917" name="apc_mmap.c" role="src" />
+   <file md5sum="a22df1256e20fef8160bbf9529723b50" name="apc_php.h" role="src" />
+   <file md5sum="c285337c2e0b852de9f79ac5015a3fa7" name="apc_pthreadmutex.c" role="src" />
+   <file md5sum="e4e6943b0cfb31facd1148c2dbfc4c93" name="apc_pthreadmutex.h" role="src" />
+   <file md5sum="ea3822772adb45e0046faef855c32aba" name="apc_sem.c" role="src" />
+   <file md5sum="1a7fb689f8d5b01fad537b277c81d59f" name="apc_sem.h" role="src" />
+   <file md5sum="632e60d387e5555f4aa03a8948f52ea7" name="apc_shm.c" role="src" />
+   <file md5sum="6de8e94976f01b2f48ef97020a008774" name="apc_shm.h" role="src" />
+   <file md5sum="25d3e2a3d1c2f9afa8e103492ca7e89e" name="apc_sma.c" role="src" />
+   <file md5sum="fdc0aebc501f2e29389611fa61084da0" name="apc_sma.h" role="src" />
+   <file md5sum="ecd6cc1d56d99dbb7364d40c975fca5e" name="apc_spin.c" role="src" />
+   <file md5sum="c716852258453471a6927f95a617e30f" name="apc_spin.h" role="src" />
+   <file md5sum="17cceda297a61a9185bcafd7d897fad4" name="apc_stack.c" role="src" />
+   <file md5sum="db2f213a3e616313d7864222874197ea" name="apc_stack.h" role="src" />
+   <file md5sum="8cccb8ecfa2d5a893537b2c1a8b6b718" name="apc_zend.c" role="src" />
+   <file md5sum="2ee61624ec5d779d02746ba7254aed14" name="apc_zend.h" role="src" />
+   <file md5sum="113d74a5e70119a63fb86815bf50d03b" name="apc_signal.c" role="src" />
+   <file md5sum="af4c7d0595ce32346f7ee37707d7dada" name="apc_signal.h" role="src" />
+   <file md5sum="5cbb3cbe6477799e7e5fd816eda69937" name="config.m4" role="src" />
+   <file md5sum="b748744f64eb4fbe201cce84cc3d7e33" name="php_apc.c" role="src" />
+   <file md5sum="8c092033ef0cd8a5d207acb4f6ecec11" name="php_apc.h" role="src" />
+   <file md5sum="76fe025ee14897783cee848dc1a77fa6" name="pgsql_s_lock.c" role="src" />
+   <file md5sum="b67725b96ecf0e6851eccce632bab289" name="pgsql_s_lock.h" role="src" />
+   <file md5sum="298e1c6721b21635ef46094c6a175af5" name="apc_fcntl_win32.c" role="src" />
+   <file md5sum="072c127617c90a92331372a3b99494d3" name="apc_rfc1867.c" role="src" />
+   <file md5sum="41fb805e7a151dc6edfe78780b5102d0" name="apc.php" role="php" />
+  </dir>
+ </contents>
+ <dependencies>
+  <required>
+   <php>
+    <min>4.3.0</min>
+    <exclude>5.0.0</exclude>
+    <exclude>5.0.1</exclude>
+    <exclude>5.0.2</exclude>
+    <exclude>5.0.3</exclude>
+    <exclude>5.0.4</exclude>
+    <exclude>5.0.5</exclude>
+   </php>
+   <pearinstaller>
+    <min>1.4.0</min>
+   </pearinstaller>
+  </required>
+ </dependencies>
+ <providesextension>apc</providesextension>
+ <extsrcrelease>
+  <configureoption default="yes" name="with-apxs" prompt="Use apxs to set compile flags (if using APC with Apache)?" />
+ </extsrcrelease>
+ <changelog>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>2.0.0</release>
+    <api>2.0.0</api>
+   </version>
+   <date>2003-07-01</date>
+   <notes>Complete rework.</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>2.0.1</release>
+    <api>2.0.0</api>
+   </version>
+   <date>2003-07-01</date>
+   <notes>Win32 support added.</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>2.0.2</release>
+    <api>2.0.0</api>
+   </version>
+   <date>2004-03-12</date>
+   <notes>Fixed non-existant class bug.</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.0</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-07-05</date>
+   <notes>PHP-5.1 Support and numerous fixes</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.1</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-07-05</date>
+   <notes>PHP4 build fix</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.2</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-07-05</date>
+   <notes>Default to mmap and add a better error message for shmget failures</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.3</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-07-07</date>
+   <notes>Fix compile problem against PHP 5.0.x</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.4</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-07-18</date>
+   <notes>Add win32 support from Edin.
+Add --with-apxs switch to work around problem when loading APC into Apache binary compiled with LFS switches
+A couple of other minor fixes.</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.5</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-07-27</date>
+   <notes>Make it easier for sapis that only populate file_handle-&gt;filename to use APC. (Rasmus)
+Support extensions such as bcompiler that need to hook into compile_file. (Val)
+Ralf Becker&apos;s apcgui code has now become the default apc.php status page. (Ralf, Rasmus, Ilia)
+Segfault in cache cleanup code (Ilia, Rasmus)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.6</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-07-30</date>
+   <notes>Added apc.php to package.xml file.
+Track per-entry memory usage. (Val)
+Various apc.php fixes and enhancements. (Ralf, Ilia, Rasmus)
+fcntl locking robustness fixes. (Rasmus)
+Shared read-locks where possible. (Rasmus)
+Added file_update_protection configuration parameter. (Rasmus)
+Windows ZTS fixes (Frank)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.7</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-08-16</date>
+   <notes>Fix to apc.php to show final segment in frag chart. (Ilia)
+A couple of win32 fixes. (Frank)
+Add apc.enable_cli ini directive. (Rasmus)
+Add test cases. (Marcus)
+Fix apc_define_constants() bug - http://pecl.php.net/bugs/5084 (Rasmus)
+Simplify user cache handling by removing the user_cache_stack (Rasmus)
+Fix apc_fetch() memory corruption (Andrei,Rasmus)
+Added apc.max_file_size INI setting that allows exclusion of large files from being cached. Default file size limit, 1 megabyte. (Ilia)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.8</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2005-08-24</date>
+   <notes>Fix invalid free in globals destructor introduced in 3.0.7 (Rasmus)
+Cache corruption fix in cache-full cleanup code (Gopal)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.9</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2006-03-04</date>
+   <notes>Eliminate rand() call when slam_defense is not set (Rasmus)
+Fix for __isset problem (Gopal)
+Rewrite allocator from a &quot;best fit&quot; to a &quot;next fit&quot; algorithm (Rasmus)
+Added a Cache Full counter so we have an idea how many times the segment has filled up causing an expunge (Rasmus)
+Report back the correct number of available bytes in the segment instead of the allocated bytes. (Rasmus)
+Add cache busy flag which is set when an expunge is underway (Rasmus)
+Add automatic serialization of objects in apc_store() (Marcus)
+64-bit .ini flag fix (Rasmus)
+Static members fix (Gopal)
+sma_cleanup() mem leak fix (Rasmus)
+Fix for http://pecl.php.net/bugs/5311 (Rasmus)
+Fix autoglobals JIT bug (Gopal)
+Fix instance bug (Gopal)
+Add a lock cleanup safety net to request shutdown (Rasmus)
+Fix apc.slam_defense edge-case bug (Rasmus)
+User entry memory usage tracking support (Ilia)
+Allow keys used in apc_store/apc_fetch/apc_delete to be binary safe and prevent conflicts between keys that are found at the start of other keys. (Ilia)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.10</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2006-03-11</date>
+   <notes>* Add apc.stat ini flag which defaults to 1.  If set to 0, the main script and any fullpath
+  includes will not be stat&apos;ed for any changes.  You will have to restart the server if you
+  change anything.  This mode increases performance quite a bit, especially if you have a
+  lot of includes.
+
+* Get rid of the lock safety net hack I added in 3.0.9.  It seems to cause more problems
+  than it solves.  I&apos;ll need to revisit locking and signal handling at some point soon.</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.11</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2006-08-16</date>
+   <notes>* Made --enable-apc-mmap the default compile option (for real this time)
+
+* Add an optional flag to apc_cache_info() and some apc.php tweaks to make it
+  only fetch header information to make it useful when you have tens of
+  thousands of entries.  (Brian Shire)
+
+* 64-bit fixes (George)
+
+* Don&apos;t mix Full Path and Inode keys (George)
+
+* Override ZEND_INCLUDE_OR_EVAL opcode (when possible) to speed up use of
+  require_once() and include_once() statements. (Sara)
+
+* Add a non-blocking write_lock for cache inserts.  This is a better approach
+  to prevent cache slams and deprecates the slam_defense setting. (Rasmus)
+
+* A bit of work on the optimizer.  (Sara)
+
+* Various memory issues resolved. (Gopal)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.12</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2006-09-04</date>
+   <notes>* Fix stray debug message
+
+* Work on the optimizer - still not stable (Gopal, Ilia, Sara)
+
+* Performance boost - Replace multiple loops over the opcode
+  array with a single loop for copying, jump fixups and auto
+  global pre-fetches. (Gopal)
+
+* Perform fetch_global checks only in php5 and only if 
+  auto_globals_jit is enabled. (Gopal)
+
+* Fix bug #8579 - scrub php4 classes&apos; function_table and default
+  properties before inserting into cache. (Gopal)
+
+* Fix bug #8606 - ZEND_FETCH_GLOBAL is not an opcode, but is a 
+  op1-&gt;type.  The opcodes applicable are ZEND_FETCH_R and 
+  ZEND_FETCH_W. (Gopal)
+
+* PHP 5.2 Compatibility (Gopal)
+
+* Make the include_once override optional - default off (Sara)
+
+* Fixed crash when apc run in CLI, but enable_cli is off. (Ilia)
+
+* Ensure that the apc_globals-&gt;cache_stack is cleared before the 
+  shm cache is destroyed. Fixes segfault for corner-case i.e request
+  shutdown (apc_deactivate) is not called before module shutdown 
+  calls (php_apc_shutdown_globals)  (Gopal)
+
+* TSRM fixes (ensure ts_free_id before apc.so is dlclosed) (Gopal)
+
+* Fix memory leak of apc_cache_info_t-&gt;deleted_list (Gopal)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.12p1</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2006-09-05</date>
+   <notes>* The only change here is a trivial PHP 4 build fix.</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.12p2</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2006-09-05</date>
+   <notes>* Let&apos;s get the version number right.  3.0.12p2 now.</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.13</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2007-02-24</date>
+   <notes>* PHP 5.2 file upload progress tracking support (Rasmus)
+* Pthread mutex and spin locks (Shire)
+* Recursive zval support for apc_fetch/_store (Shire, Gopal)
+* apc.stat_ctime flag for ctime checks (Rasmus)
+* Multiple key fetches with apc_fetch (Shire)
+* Canary checks for shm memory deallocation (Gopal)
+* Add hooks for external optimizer (Shire)
+* Obsolete and remove apc optimizer (Gopal)
+* APC info changes - cache insert rate, hit and miss rates (Shire)
+* Fix apc_load_constants (Gopal)
+* Rewrite dump opcode code to use vld (Gopal)
+* Use apc_[ewn]print functions for error reporting (Shire) 
+* Auto global fixes and refactoring (Gopal, Shire)
+* Fix memory leaks in object serialization (Ilia)
+* Memory cleanup code for destructor order (Gopal)
+* Win32 build fixes (Ilia, Wez)
+* ZTS and Php 4 build fixes (Bjori)
+* Add apc_add() function (Rasmus)
+* Add optional limited flag to apc_sma_info() (Rasmus)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.14</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2007-04-02</date>
+   <notes>* Build fix (Shire)
+* Don&apos;t hook the upload hook if APC is disabled (Rasmus)
+* Local shadow cache support (Gopal)
+* Avoid uneccessary loops over op_arrays for &quot;known&quot; auto-globals (Gopal)
+* Fix apc_add() to overwrite timed out user entries (Rasmus)
+* Fix double inclusion of files with conditional classes in php4 (Gopal)
+* Allocator fixes to reduce fragmentation (Gopal)</notes>
+  </release>
+  <release>
+   <stability>
+    <release>stable</release>
+    <api>stable</api>
+   </stability>
+   <version>
+    <release>3.0.15</release>
+    <api>3.0.0</api>
+   </version>
+   <date>2007-10-18</date>
+   <notes>* Eliminate a per-request time() syscall (Rasmus)
+* Added rfc1867 prefix, name, and freq ini options (Shire)
+* Allow deletion of individual user cache entries via apc.php (Sara)
+* Fix overzealous cleanup during RSHUTDOWN (Gopal)
+* Fix memory alignment and locking issues (Gopal)
+* Make apc_compile insert/replace entries (Shire)
+* Make mixed inheritance recompile &amp; cache afresh  (Gopal)
+* Make nostat mode search include_path for canonicalization (Gopal)
+* ZTS &amp; other compile fixes (Gopal, Edin, Shire)</notes>
+  </release>
+ </changelog>
+</package>
diff -ubrN php-5.2.5-orig/ext/apc/pgsql_s_lock.c php-5.2.5/ext/apc/pgsql_s_lock.c
--- php-5.2.5-orig/ext/apc/pgsql_s_lock.c       1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/pgsql_s_lock.c    2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,481 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2007 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | The following code was ported from the PostgreSQL project, please    |
+  |  see appropriate copyright notices that follow.                      |
+  | Initial conversion by Brian Shire <shire@php.net>                    |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: pgsql_s_lock.c,v 3.2 2007/02/25 05:19:11 shire Exp $ */
+
+/*-------------------------------------------------------------------------
+ *
+ * s_lock.c
+ *        Hardware-dependent implementation of spinlocks.
+ *
+ *
+ * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *       $PostgreSQL: pgsql/src/backend/storage/lmgr/s_lock.c,v 1.47 2006/10/04 00:29:58 momjian Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+/* #include "postgres.h"  -- Removed for APC */
+
+/* -- Added for APC -- */
+#include "apc.h"
+#ifdef APC_SPIN_LOCKS
+
+#ifdef S_LOCK_TEST
+#include <stdio.h>
+#endif
+#ifndef WIN32
+#include <sys/select.h>
+#endif
+/* ---- */
+
+#include <time.h>
+#include <unistd.h>
+
+/* #include "storage/s_lock.h" -- Removed for APC */
+#include "pgsql_s_lock.h"
+
+static int     spins_per_delay = DEFAULT_SPINS_PER_DELAY;
+
+
+/* -- APC specific additions ------------------------------*/
+/* The following dependencies have been copied from 
+ * other pgsql source files.  The original locations 
+ * have been noted.
+ */
+
+/* -- from include/c.h -- */
+#ifndef TRUE
+#define TRUE  1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+/* -- from include/pg_config_manual.h -- */
+#define MAX_RANDOM_VALUE (0x7FFFFFFF) 
+
+/*
+ * Max
+ *    Return the maximum of two numbers.
+ */
+#define Max(x, y)   ((x) > (y) ? (x) : (y))
+
+/* -- from include/c.h -- */
+/*
+ * Min
+ *    Return the minimum of two numbers.
+ */
+#define Min(x, y)   ((x) < (y) ? (x) : (y))
+
+
+/* -- from backend/port/win32/signal.c -- */
+/*
+ * pg_usleep --- delay the specified number of microseconds.
+ *
+ * NOTE: although the delay is specified in microseconds, the effective
+ * resolution is only 1/HZ, or 10 milliseconds, on most Unixen.  Expect
+ * the requested delay to be rounded up to the next resolution boundary.
+ *
+ * On machines where "long" is 32 bits, the maximum delay is ~2000 seconds.
+ */
+void
+pg_usleep(long microsec)
+{
+       if (microsec > 0)
+       {
+#ifndef WIN32
+               struct timeval delay;
+
+               delay.tv_sec = microsec / 1000000L;
+               delay.tv_usec = microsec % 1000000L;
+               (void) select(0, NULL, NULL, NULL, &delay);
+#else
+               SleepEx((microsec < 500 ? 1 : (microsec + 500) / 1000), FALSE);
+#endif
+       }
+}
+
+/* -- End APC specific additions ------------------------------*/
+
+
+/*
+ * s_lock_stuck() - complain about a stuck spinlock
+ */
+static void
+s_lock_stuck(volatile slock_t *lock, const char *file, int line)
+{
+#if defined(S_LOCK_TEST)
+       fprintf(stderr,
+                       "\nStuck spinlock (%p) detected at %s:%d.\n",
+                       lock, file, line);
+       exit(1);
+#else
+  /* -- Removed for APC
+       elog(PANIC, "stuck spinlock (%p) detected at %s:%d",
+                lock, file, line);
+  */
+  apc_eprint("Stuck spinlock (%p) detected", lock);
+#endif
+}
+
+
+/*
+ * s_lock(lock) - platform-independent portion of waiting for a spinlock.
+ */
+void
+s_lock(volatile slock_t *lock, const char *file, int line)
+{
+       /*
+        * We loop tightly for awhile, then delay using pg_usleep() and try again.
+        * Preferably, "awhile" should be a small multiple of the maximum time we
+        * expect a spinlock to be held.  100 iterations seems about right as an
+        * initial guess.  However, on a uniprocessor the loop is a waste of
+        * cycles, while in a multi-CPU scenario it's usually better to spin a bit
+        * longer than to call the kernel, so we try to adapt the spin loop count
+        * depending on whether we seem to be in a uniprocessor or multiprocessor.
+        *
+        * Note: you might think MIN_SPINS_PER_DELAY should be just 1, but you'd
+        * be wrong; there are platforms where that can result in a "stuck
+        * spinlock" failure.  This has been seen particularly on Alphas; it seems
+        * that the first TAS after returning from kernel space will always fail
+        * on that hardware.
+        *
+        * Once we do decide to block, we use randomly increasing pg_usleep()
+        * delays. The first delay is 1 msec, then the delay randomly increases to
+        * about one second, after which we reset to 1 msec and start again.  The
+        * idea here is that in the presence of heavy contention we need to
+        * increase the delay, else the spinlock holder may never get to run and
+        * release the lock.  (Consider situation where spinlock holder has been
+        * nice'd down in priority by the scheduler --- it will not get scheduled
+        * until all would-be acquirers are sleeping, so if we always use a 1-msec
+        * sleep, there is a real possibility of starvation.)  But we can't just
+        * clamp the delay to an upper bound, else it would take a long time to
+        * make a reasonable number of tries.
+        *
+        * We time out and declare error after NUM_DELAYS delays (thus, exactly
+        * that many tries).  With the given settings, this will usually take 2 or
+        * so minutes.  It seems better to fix the total number of tries (and thus
+        * the probability of unintended failure) than to fix the total time
+        * spent.
+        *
+        * The pg_usleep() delays are measured in milliseconds because 1 msec is a
+        * common resolution limit at the OS level for newer platforms. On older
+        * platforms the resolution limit is usually 10 msec, in which case the
+        * total delay before timeout will be a bit more.
+        */
+#define MIN_SPINS_PER_DELAY 10
+#define MAX_SPINS_PER_DELAY 1000
+#define NUM_DELAYS                     1000
+#define MIN_DELAY_MSEC         1
+#define MAX_DELAY_MSEC         1000
+
+       int                     spins = 0;
+       int                     delays = 0;
+       int                     cur_delay = 0;
+  
+       while (TAS(lock))
+       {
+               /* CPU-specific delay each time through the loop */
+               SPIN_DELAY();
+
+               /* Block the process every spins_per_delay tries */
+               if (++spins >= spins_per_delay)
+               {
+                       if (++delays > NUM_DELAYS)
+                               s_lock_stuck(lock, file, line);
+
+                       if (cur_delay == 0) /* first time to delay? */
+                               cur_delay = MIN_DELAY_MSEC;
+
+                       pg_usleep(cur_delay * 1000L);
+
+#if defined(S_LOCK_TEST)
+                       fprintf(stdout, "*");
+                       fflush(stdout);
+#endif
+
+                       /* increase delay by a random fraction between 1X and 2X */
+                       cur_delay += (int) (cur_delay *
+                                         ((double) random() / (double) MAX_RANDOM_VALUE) + 0.5);
+                       /* wrap back to minimum delay when max is exceeded */
+                       if (cur_delay > MAX_DELAY_MSEC)
+                               cur_delay = MIN_DELAY_MSEC;
+
+                       spins = 0;
+               }
+       }
+
+       /*
+        * If we were able to acquire the lock without delaying, it's a good
+        * indication we are in a multiprocessor.  If we had to delay, it's a sign
+        * (but not a sure thing) that we are in a uniprocessor. Hence, we
+        * decrement spins_per_delay slowly when we had to delay, and increase it
+        * rapidly when we didn't.  It's expected that spins_per_delay will
+        * converge to the minimum value on a uniprocessor and to the maximum
+        * value on a multiprocessor.
+        *
+        * Note: spins_per_delay is local within our current process. We want to
+        * average these observations across multiple backends, since it's
+        * relatively rare for this function to even get entered, and so a single
+        * backend might not live long enough to converge on a good value.      That
+        * is handled by the two routines below.
+        */
+       if (cur_delay == 0)
+       {
+               /* we never had to delay */
+               if (spins_per_delay < MAX_SPINS_PER_DELAY)
+                       spins_per_delay = Min(spins_per_delay + 100, MAX_SPINS_PER_DELAY);
+       }
+       else
+       {
+               if (spins_per_delay > MIN_SPINS_PER_DELAY)
+                       spins_per_delay = Max(spins_per_delay - 1, MIN_SPINS_PER_DELAY);
+       }
+}
+
+
+#if 0  /* -- APC doesn't use the set_spins_per_delay or update_spins_per_delay -- */
+/*
+ * Set local copy of spins_per_delay during backend startup.
+ *
+ * NB: this has to be pretty fast as it is called while holding a spinlock
+ */
+void
+set_spins_per_delay(int shared_spins_per_delay)
+{
+       spins_per_delay = shared_spins_per_delay;
+}
+
+/*
+ * Update shared estimate of spins_per_delay during backend exit.
+ *
+ * NB: this has to be pretty fast as it is called while holding a spinlock
+ */
+int
+update_spins_per_delay(int shared_spins_per_delay)
+{
+       /*
+        * We use an exponential moving average with a relatively slow adaption
+        * rate, so that noise in any one backend's result won't affect the shared
+        * value too much.      As long as both inputs are within the allowed range,
+        * the result must be too, so we need not worry about clamping the result.
+        *
+        * We deliberately truncate rather than rounding; this is so that single
+        * adjustments inside a backend can affect the shared estimate (see the
+        * asymmetric adjustment rules above).
+        */
+       return (shared_spins_per_delay * 15 + spins_per_delay) / 16;
+}
+#endif
+
+/*
+ * Various TAS implementations that cannot live in s_lock.h as no inline
+ * definition exists (yet).
+ * In the future, get rid of tas.[cso] and fold it into this file.
+ *
+ * If you change something here, you will likely need to modify s_lock.h too,
+ * because the definitions for these are split between this file and s_lock.h.
+ */
+
+
+#ifdef HAVE_SPINLOCKS                  /* skip spinlocks if requested */
+
+
+#if defined(__GNUC__)
+
+/*
+ * All the gcc flavors that are not inlined
+ */
+
+
+/*
+ * Note: all the if-tests here probably ought to be testing gcc version
+ * rather than platform, but I don't have adequate info to know what to
+ * write.  Ideally we'd flush all this in favor of the inline version.
+ */
+#if defined(__m68k__) && !defined(__linux__)
+/* really means: extern int tas(slock_t* **lock); */
+static void
+tas_dummy()
+{
+       __asm__         __volatile__(
+#if defined(__NetBSD__) && defined(__ELF__)
+/* no underscore for label and % for registers */
+                                                                                "\
+.global                tas                             \n\
+tas:                                                   \n\
+                       movel   %sp@(0x4),%a0   \n\
+                       tas     %a0@            \n\
+                       beq     _success        \n\
+                       moveq   #-128,%d0       \n\
+                       rts                             \n\
+_success:                                              \n\
+                       moveq   #0,%d0          \n\
+                       rts                             \n"
+#else
+                                                                                "\
+.global                _tas                            \n\
+_tas:                                                  \n\
+                       movel   sp@(0x4),a0     \n\
+                       tas     a0@                     \n\
+                       beq     _success        \n\
+                       moveq   #-128,d0        \n\
+                       rts                                     \n\
+_success:                                              \n\
+                       moveq   #0,d0           \n\
+                       rts                                     \n"
+#endif   /* __NetBSD__ && __ELF__ */
+       );
+}
+#endif   /* __m68k__ && !__linux__ */
+#else                                                  /* not __GNUC__ */
+
+/*
+ * All non gcc
+ */
+
+
+#if defined(sun3)
+static void
+tas_dummy()                                            /* really means: extern int tas(slock_t
+                                                                * *lock); */
+{
+       asm("LLA0:");
+       asm("   .data");
+       asm("   .text");
+       asm("|#PROC# 04");
+       asm("   .globl  _tas");
+       asm("_tas:");
+       asm("|#PROLOGUE# 1");
+       asm("   movel   sp@(0x4),a0");
+       asm("   tas a0@");
+       asm("   beq LLA1");
+       asm("   moveq   #-128,d0");
+       asm("   rts");
+       asm("LLA1:");
+       asm("   moveq   #0,d0");
+       asm("   rts");
+       asm("   .data");
+}
+#endif   /* sun3 */
+#endif   /* not __GNUC__ */
+#endif   /* HAVE_SPINLOCKS */
+
+
+
+/*****************************************************************************/
+#if defined(S_LOCK_TEST)
+
+/*
+ * test program for verifying a port's spinlock support.
+ */
+
+struct test_lock_struct
+{
+       char            pad1;
+       slock_t         lock;
+       char            pad2;
+};
+
+volatile struct test_lock_struct test_lock;
+
+int
+main()
+{
+       srandom((unsigned int) time(NULL));
+
+       test_lock.pad1 = test_lock.pad2 = 0x44;
+
+       S_INIT_LOCK(&test_lock.lock);
+
+       if (test_lock.pad1 != 0x44 || test_lock.pad2 != 0x44)
+       {
+               printf("S_LOCK_TEST: failed, declared datatype is wrong size\n");
+               return 1;
+       }
+
+       if (!S_LOCK_FREE(&test_lock.lock))
+       {
+               printf("S_LOCK_TEST: failed, lock not initialized\n");
+               return 1;
+       }
+
+       S_LOCK(&test_lock.lock);
+
+       if (test_lock.pad1 != 0x44 || test_lock.pad2 != 0x44)
+       {
+               printf("S_LOCK_TEST: failed, declared datatype is wrong size\n");
+               return 1;
+       }
+
+       if (S_LOCK_FREE(&test_lock.lock))
+       {
+               printf("S_LOCK_TEST: failed, lock not locked\n");
+               return 1;
+       }
+
+       S_UNLOCK(&test_lock.lock);
+
+       if (test_lock.pad1 != 0x44 || test_lock.pad2 != 0x44)
+       {
+               printf("S_LOCK_TEST: failed, declared datatype is wrong size\n");
+               return 1;
+       }
+
+       if (!S_LOCK_FREE(&test_lock.lock))
+       {
+               printf("S_LOCK_TEST: failed, lock not unlocked\n");
+               return 1;
+       }
+
+       S_LOCK(&test_lock.lock);
+
+       if (test_lock.pad1 != 0x44 || test_lock.pad2 != 0x44)
+       {
+               printf("S_LOCK_TEST: failed, declared datatype is wrong size\n");
+               return 1;
+       }
+
+       if (S_LOCK_FREE(&test_lock.lock))
+       {
+               printf("S_LOCK_TEST: failed, lock not re-locked\n");
+               return 1;
+       }
+
+       printf("S_LOCK_TEST: this will print %d stars and then\n", NUM_DELAYS);
+       printf("             exit with a 'stuck spinlock' message\n");
+       printf("             if S_LOCK() and TAS() are working.\n");
+       fflush(stdout);
+
+       s_lock(&test_lock.lock, __FILE__, __LINE__);
+
+       printf("S_LOCK_TEST: failed, lock not locked\n");
+       return 1;
+}
+
+#endif   /* S_LOCK_TEST */
+
+#endif /* APC_SPIN_LOCKS */
diff -ubrN php-5.2.5-orig/ext/apc/pgsql_s_lock.h php-5.2.5/ext/apc/pgsql_s_lock.h
--- php-5.2.5-orig/ext/apc/pgsql_s_lock.h       1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/pgsql_s_lock.h    2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,928 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2007 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | The following code was ported from the PostgreSQL project, please    |
+  |  see appropriate copyright notices that follow.                      |
+  | Initial conversion by Brian Shire <shire@php.net>                    |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: pgsql_s_lock.h,v 3.3 2007/02/16 21:28:04 shire Exp $ */
+
+/*-------------------------------------------------------------------------
+ *
+ * s_lock.h
+ *        Hardware-dependent implementation of spinlocks.
+ *
+ *     NOTE: none of the macros in this file are intended to be called directly.
+ *     Call them through the hardware-independent macros in spin.h.
+ *
+ *     The following hardware-dependent macros must be provided for each
+ *     supported platform:
+ *
+ *     void S_INIT_LOCK(slock_t *lock)
+ *             Initialize a spinlock (to the unlocked state).
+ *
+ *     void S_LOCK(slock_t *lock)
+ *             Acquire a spinlock, waiting if necessary.
+ *             Time out and abort() if unable to acquire the lock in a
+ *             "reasonable" amount of time --- typically ~ 1 minute.
+ *
+ *     void S_UNLOCK(slock_t *lock)
+ *             Unlock a previously acquired lock.
+ *
+ *     bool S_LOCK_FREE(slock_t *lock)
+ *             Tests if the lock is free. Returns TRUE if free, FALSE if locked.
+ *             This does *not* change the state of the lock.
+ *
+ *     void SPIN_DELAY(void)
+ *             Delay operation to occur inside spinlock wait loop.
+ *
+ *     Note to implementors: there are default implementations for all these
+ *     macros at the bottom of the file.  Check if your platform can use
+ *     these or needs to override them.
+ *
+ *  Usually, S_LOCK() is implemented in terms of an even lower-level macro
+ *     TAS():
+ *
+ *     int TAS(slock_t *lock)
+ *             Atomic test-and-set instruction.  Attempt to acquire the lock,
+ *             but do *not* wait.      Returns 0 if successful, nonzero if unable
+ *             to acquire the lock.
+ *
+ *     TAS() is NOT part of the API, and should never be called directly.
+ *
+ *     CAUTION: on some platforms TAS() may sometimes report failure to acquire
+ *     a lock even when the lock is not locked.  For example, on Alpha TAS()
+ *     will "fail" if interrupted.  Therefore TAS() should always be invoked
+ *     in a retry loop, even if you are certain the lock is free.
+ *
+ *     ANOTHER CAUTION: be sure that TAS() and S_UNLOCK() represent sequence
+ *     points, ie, loads and stores of other values must not be moved across
+ *     a lock or unlock.  In most cases it suffices to make the operation be
+ *     done through a "volatile" pointer.
+ *
+ *     On most supported platforms, TAS() uses a tas() function written
+ *     in assembly language to execute a hardware atomic-test-and-set
+ *     instruction.  Equivalent OS-supplied mutex routines could be used too.
+ *
+ *     If no system-specific TAS() is available (ie, HAVE_SPINLOCKS is not
+ *     defined), then we fall back on an emulation that uses SysV semaphores
+ *     (see spin.c).  This emulation will be MUCH MUCH slower than a proper TAS()
+ *     implementation, because of the cost of a kernel call per lock or unlock.
+ *     An old report is that Postgres spends around 40% of its time in semop(2)
+ *     when using the SysV semaphore code.
+ *
+ *
+ * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *       $PostgreSQL: pgsql/src/include/storage/s_lock.h,v 1.157 2006/06/07 22:24:45 momjian Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef S_LOCK_H
+#define S_LOCK_H
+
+/** APC namespace protection ************************************************/
+/* hack to protect against any possible runtime namespace collisions...*/
+#define pg_usleep               apc_spin_pg_usleep
+#define s_lock                  apc_spin_s_lock
+#define spins_per_delay         apc_spin_spins_per_delay
+/****************************************************************************/
+
+
+/* #include "storage/pg_sema.h"   -- Removed for APC */
+
+#define HAVE_SPINLOCKS 1 /* -- Added for APC */
+
+#ifdef HAVE_SPINLOCKS  /* skip spinlocks if requested */
+
+
+#if defined(__GNUC__) || defined(__ICC)
+/*************************************************************************
+ * All the gcc inlines
+ * Gcc consistently defines the CPU as __cpu__.
+ * Other compilers use __cpu or __cpu__ so we test for both in those cases.
+ */
+
+/*----------
+ * Standard gcc asm format (assuming "volatile slock_t *lock"):
+
+       __asm__ __volatile__(
+               "       instruction     \n"
+               "       instruction     \n"
+               "       instruction     \n"
+:              "=r"(_res), "+m"(*lock)         // return register, in/out lock value
+:              "r"(lock)                                       // lock pointer, in input register
+:              "memory", "cc");                        // show clobbered registers here
+
+ * The output-operands list (after first colon) should always include
+ * "+m"(*lock), whether or not the asm code actually refers to this
+ * operand directly.  This ensures that gcc believes the value in the
+ * lock variable is used and set by the asm code.  Also, the clobbers
+ * list (after third colon) should always include "memory"; this prevents
+ * gcc from thinking it can cache the values of shared-memory fields
+ * across the asm code.  Add "cc" if your asm code changes the condition
+ * code register, and also list any temp registers the code uses.
+ *----------
+ */
+
+
+#ifdef __i386__                /* 32-bit i386 */
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+
+#define TAS(lock) tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register slock_t _res = 1;
+
+       /*
+        * Use a non-locking test before asserting the bus lock.  Note that the
+        * extra test appears to be a small loss on some x86 platforms and a small
+        * win on others; it's by no means clear that we should keep it.
+        */
+       __asm__ __volatile__(
+               "       cmpb    $0,%1   \n"
+               "       jne             1f              \n"
+               "       lock                    \n"
+               "       xchgb   %0,%1   \n"
+               "1: \n"
+:              "+q"(_res), "+m"(*lock)
+:
+:              "memory", "cc");
+       return (int) _res;
+}
+
+#define SPIN_DELAY() spin_delay()
+
+static __inline__ void
+spin_delay(void)
+{
+       /*
+        * This sequence is equivalent to the PAUSE instruction ("rep" is
+        * ignored by old IA32 processors if the following instruction is
+        * not a string operation); the IA-32 Architecture Software
+        * Developer's Manual, Vol. 3, Section 7.7.2 describes why using
+        * PAUSE in the inner loop of a spin lock is necessary for good
+        * performance:
+        *
+        *     The PAUSE instruction improves the performance of IA-32
+        *     processors supporting Hyper-Threading Technology when
+        *     executing spin-wait loops and other routines where one
+        *     thread is accessing a shared lock or semaphore in a tight
+        *     polling loop. When executing a spin-wait loop, the
+        *     processor can suffer a severe performance penalty when
+        *     exiting the loop because it detects a possible memory order
+        *     violation and flushes the core processor's pipeline. The
+        *     PAUSE instruction provides a hint to the processor that the
+        *     code sequence is a spin-wait loop. The processor uses this
+        *     hint to avoid the memory order violation and prevent the
+        *     pipeline flush. In addition, the PAUSE instruction
+        *     de-pipelines the spin-wait loop to prevent it from
+        *     consuming execution resources excessively.
+        */
+       __asm__ __volatile__(
+               " rep; nop                      \n");
+}
+
+#endif  /* __i386__ */
+
+
+#ifdef __x86_64__              /* AMD Opteron, Intel EM64T */
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+
+#define TAS(lock) tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register slock_t _res = 1;
+
+       /*
+        * On Opteron, using a non-locking test before the locking instruction
+        * is a huge loss.  On EM64T, it appears to be a wash or small loss,
+        * so we needn't bother to try to distinguish the sub-architectures.
+        */
+       __asm__ __volatile__(
+               "       lock                    \n"
+               "       xchgb   %0,%1   \n"
+:              "+q"(_res), "+m"(*lock)
+:
+:              "memory", "cc");
+       return (int) _res;
+}
+
+#define SPIN_DELAY() spin_delay()
+
+static __inline__ void
+spin_delay(void)
+{
+       /*
+        * Adding a PAUSE in the spin delay loop is demonstrably a no-op on
+        * Opteron, but it may be of some use on EM64T, so we keep it.
+        */
+       __asm__ __volatile__(
+               " rep; nop                      \n");
+}
+
+#endif  /* __x86_64__ */
+
+
+#if defined(__ia64__) || defined(__ia64)       /* Intel Itanium */
+#define HAS_TEST_AND_SET
+
+typedef unsigned int slock_t;
+
+#define TAS(lock) tas(lock)
+
+#ifndef __INTEL_COMPILER
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       long int        ret;
+
+       __asm__ __volatile__(
+               "       xchg4   %0=%1,%2        \n"
+:              "=r"(ret), "+m"(*lock)
+:              "r"(1)
+:              "memory");
+       return (int) ret;
+}
+
+#else /* __INTEL_COMPILER */
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       int             ret;
+
+       ret = _InterlockedExchange(lock,1);     /* this is a xchg asm macro */
+
+       return ret;
+}
+
+#endif /* __INTEL_COMPILER */
+#endif  /* __ia64__ || __ia64 */
+
+
+#if defined(__arm__) || defined(__arm)
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+
+#define TAS(lock) tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register slock_t _res = 1;
+
+       __asm__ __volatile__(
+               "       swpb    %0, %0, [%2]    \n"
+:              "+r"(_res), "+m"(*lock)
+:              "r"(lock)
+:              "memory");
+       return (int) _res;
+}
+
+#endif  /* __arm__ */
+
+
+/* S/390 and S/390x Linux (32- and 64-bit zSeries) */
+#if defined(__s390__) || defined(__s390x__)
+#define HAS_TEST_AND_SET
+
+typedef unsigned int slock_t;
+
+#define TAS(lock)         tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       int                     _res = 0;
+
+       __asm__ __volatile__(
+               "       cs      %0,%3,0(%2)             \n"
+:              "+d"(_res), "+m"(*lock)
+:              "a"(lock), "d"(1)
+:              "memory", "cc");
+       return _res;
+}
+
+#endif  /* __s390__ || __s390x__ */
+
+
+#if defined(__sparc__)         /* Sparc */
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+
+#define TAS(lock) tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register slock_t _res;
+
+       /*
+        *      See comment in /pg/backend/port/tas/solaris_sparc.s for why this
+        *      uses "ldstub", and that file uses "cas".  gcc currently generates
+        *      sparcv7-targeted binaries, so "cas" use isn't possible.
+        */
+       __asm__ __volatile__(
+               "       ldstub  [%2], %0        \n"
+:              "=r"(_res), "+m"(*lock)
+:              "r"(lock)
+:              "memory");
+       return (int) _res;
+}
+
+#endif  /* __sparc__ */
+
+
+/* PowerPC */
+#if defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__) || defined(__powerpc64__)
+#define HAS_TEST_AND_SET
+
+#if defined(__ppc64__) || defined(__powerpc64__)
+typedef unsigned long slock_t;
+#else
+typedef unsigned int slock_t;
+#endif
+
+#define TAS(lock) tas(lock)
+/*
+ * NOTE: per the Enhanced PowerPC Architecture manual, v1.0 dated 7-May-2002,
+ * an isync is a sufficient synchronization barrier after a lwarx/stwcx loop.
+ */
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       slock_t _t;
+       int _res;
+
+       __asm__ __volatile__(
+"      lwarx   %0,0,%3         \n"
+"      cmpwi   %0,0            \n"
+"      bne     1f                      \n"
+"      addi    %0,%0,1         \n"
+"      stwcx.  %0,0,%3         \n"
+"      beq     2f              \n"
+"1:    li      %1,1            \n"
+"      b               3f                      \n"
+"2:                                            \n"
+"      isync                           \n"
+"      li      %1,0            \n"
+"3:                                            \n"
+
+:      "=&r"(_t), "=r"(_res), "+m"(*lock)
+:      "r"(lock)
+:      "memory", "cc");
+       return _res;
+}
+
+/* PowerPC S_UNLOCK is almost standard but requires a "sync" instruction */
+#define S_UNLOCK(lock) \
+do \
+{ \
+       __asm__ __volatile__ (" sync \n"); \
+       *((volatile slock_t *) (lock)) = 0; \
+} while (0)
+
+#endif /* powerpc */
+
+
+/* Linux Motorola 68k */
+#if (defined(__mc68000__) || defined(__m68k__)) && defined(__linux__)
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+
+#define TAS(lock) tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register int rv;
+
+       __asm__ __volatile__(
+               "       clrl    %0              \n"
+               "       tas             %1              \n"
+               "       sne             %0              \n"
+:              "=d"(rv), "+m"(*lock)
+:
+:              "memory", "cc");
+       return rv;
+}
+
+#endif  /* (__mc68000__ || __m68k__) && __linux__ */
+
+
+/*
+ * VAXen -- even multiprocessor ones
+ * (thanks to Tom Ivar Helbekkmo)
+ */
+#if defined(__vax__)
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+
+#define TAS(lock) tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register int    _res;
+
+       __asm__ __volatile__(
+               "       movl    $1, %0                  \n"
+               "       bbssi   $0, (%2), 1f    \n"
+               "       clrl    %0                              \n"
+               "1: \n"
+:              "=&r"(_res), "+m"(*lock)
+:              "r"(lock)
+:              "memory");
+       return _res;
+}
+
+#endif  /* __vax__ */
+
+
+#if defined(__ns32k__)         /* National Semiconductor 32K */
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+
+#define TAS(lock) tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register int    _res;
+
+       __asm__ __volatile__(
+               "       sbitb   0, %1   \n"
+               "       sfsd    %0              \n"
+:              "=r"(_res), "+m"(*lock)
+:
+:              "memory");
+       return _res;
+}
+
+#endif  /* __ns32k__ */
+
+
+#if defined(__alpha) || defined(__alpha__)     /* Alpha */
+/*
+ * Correct multi-processor locking methods are explained in section 5.5.3
+ * of the Alpha AXP Architecture Handbook, which at this writing can be
+ * found at ftp://ftp.netbsd.org/pub/NetBSD/misc/dec-docs/index.html.
+ * For gcc we implement the handbook's code directly with inline assembler.
+ */
+#define HAS_TEST_AND_SET
+
+typedef unsigned long slock_t;
+
+#define TAS(lock)  tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register slock_t _res;
+
+       __asm__ __volatile__(
+               "       ldq             $0, %1  \n"
+               "       bne             $0, 2f  \n"
+               "       ldq_l   %0, %1  \n"
+               "       bne             %0, 2f  \n"
+               "       mov             1,  $0  \n"
+               "       stq_c   $0, %1  \n"
+               "       beq             $0, 2f  \n"
+               "       mb                              \n"
+               "       br              3f              \n"
+               "2:     mov             1, %0   \n"
+               "3:                                     \n"
+:              "=&r"(_res), "+m"(*lock)
+:
+:              "memory", "0");
+       return (int) _res;
+}
+
+#define S_UNLOCK(lock) \
+do \
+{\
+       __asm__ __volatile__ (" mb \n"); \
+       *((volatile slock_t *) (lock)) = 0; \
+} while (0)
+
+#endif /* __alpha || __alpha__ */
+
+
+#if defined(__mips__) && !defined(__sgi)       /* non-SGI MIPS */
+/* Note: on SGI we use the OS' mutex ABI, see below */
+/* Note: R10000 processors require a separate SYNC */
+#define HAS_TEST_AND_SET
+
+typedef unsigned int slock_t;
+
+#define TAS(lock) tas(lock)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       register volatile slock_t *_l = lock;
+       register int _res;
+       register int _tmp;
+
+       __asm__ __volatile__(
+               "       .set push           \n"
+               "       .set mips2          \n"
+               "       .set noreorder      \n"
+               "       .set nomacro        \n"
+               "       ll      %0, %2      \n"
+               "       or      %1, %0, 1   \n"
+               "       sc      %1, %2      \n"
+               "       xori    %1, 1       \n"
+               "       or      %0, %0, %1  \n"
+               "       sync                \n"
+               "       .set pop              "
+:              "=&r" (_res), "=&r" (_tmp), "+R" (*_l)
+:
+:              "memory");
+       return _res;
+}
+
+/* MIPS S_UNLOCK is almost standard but requires a "sync" instruction */
+#define S_UNLOCK(lock) \
+do \
+{ \
+       __asm__ __volatile__( \
+               "       .set push           \n" \
+               "       .set mips2          \n" \
+               "       .set noreorder      \n" \
+               "       .set nomacro        \n" \
+               "       sync                \n" \
+               "       .set pop              "); \
+       *((volatile slock_t *) (lock)) = 0; \
+} while (0)
+
+#endif /* __mips__ && !__sgi */
+
+
+/* These live in s_lock.c, but only for gcc */
+
+
+#if defined(__m68k__) && !defined(__linux__)   /* non-Linux Motorola 68k */
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+#endif
+
+
+#endif /* __GNUC__ */
+
+
+
+/*
+ * ---------------------------------------------------------------------
+ * Platforms that use non-gcc inline assembly:
+ * ---------------------------------------------------------------------
+ */
+
+#if !defined(HAS_TEST_AND_SET) /* We didn't trigger above, let's try here */
+
+
+#if defined(USE_UNIVEL_CC)             /* Unixware compiler */
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+
+#define TAS(lock)      tas(lock)
+
+asm int
+tas(volatile slock_t *s_lock)
+{
+/* UNIVEL wants %mem in column 1, so we don't pg_indent this file */
+%mem s_lock
+       pushl %ebx
+       movl s_lock, %ebx
+       movl $255, %eax
+       lock
+       xchgb %al, (%ebx)
+       popl %ebx
+}
+
+#endif  /* defined(USE_UNIVEL_CC) */
+
+
+#if defined(__alpha) || defined(__alpha__)     /* Tru64 Unix Alpha compiler */
+/*
+ * The Tru64 compiler doesn't support gcc-style inline asm, but it does
+ * have some builtin functions that accomplish much the same results.
+ * For simplicity, slock_t is defined as long (ie, quadword) on Alpha
+ * regardless of the compiler in use.  LOCK_LONG and UNLOCK_LONG only
+ * operate on an int (ie, longword), but that's OK as long as we define
+ * S_INIT_LOCK to zero out the whole quadword.
+ */
+#define HAS_TEST_AND_SET
+
+typedef unsigned long slock_t;
+
+#include <alpha/builtins.h>
+#define S_INIT_LOCK(lock)  (*(lock) = 0)
+#define TAS(lock)                 (__LOCK_LONG_RETRY((lock), 1) == 0)
+#define S_UNLOCK(lock)    __UNLOCK_LONG(lock)
+
+#endif  /* __alpha || __alpha__ */
+
+
+#if defined(__hppa) || defined(__hppa__)       /* HP PA-RISC, GCC and HP compilers */
+/*
+ * HP's PA-RISC
+ *
+ * See src/backend/port/hpux/tas.c.template for details about LDCWX.  Because
+ * LDCWX requires a 16-byte-aligned address, we declare slock_t as a 16-byte
+ * struct.  The active word in the struct is whichever has the aligned address;
+ * the other three words just sit at -1.
+ *
+ * When using gcc, we can inline the required assembly code.
+ */
+#define HAS_TEST_AND_SET
+
+typedef struct
+{
+       int                     sema[4];
+} slock_t;
+
+#define TAS_ACTIVE_WORD(lock)  ((volatile int *) (((long) (lock) + 15) & ~15))
+
+#if defined(__GNUC__)
+
+static __inline__ int
+tas(volatile slock_t *lock)
+{
+       volatile int *lockword = TAS_ACTIVE_WORD(lock);
+       register int lockval;
+
+       __asm__ __volatile__(
+               "       ldcwx   0(0,%2),%0      \n"
+:              "=r"(lockval), "+m"(*lockword)
+:              "r"(lockword)
+:              "memory");
+       return (lockval == 0);
+}
+
+#endif /* __GNUC__ */
+
+#define S_UNLOCK(lock) (*TAS_ACTIVE_WORD(lock) = -1)
+
+#define S_INIT_LOCK(lock) \
+       do { \
+               volatile slock_t *lock_ = (lock); \
+               lock_->sema[0] = -1; \
+               lock_->sema[1] = -1; \
+               lock_->sema[2] = -1; \
+               lock_->sema[3] = -1; \
+       } while (0)
+
+#define S_LOCK_FREE(lock)      (*TAS_ACTIVE_WORD(lock) != 0)
+
+#endif  /* __hppa || __hppa__ */
+
+
+#if defined(__hpux) && defined(__ia64) && !defined(__GNUC__)
+
+#define HAS_TEST_AND_SET
+
+typedef unsigned int slock_t;
+
+#include <ia64/sys/inline.h>
+#define TAS(lock) _Asm_xchg(_SZ_W, lock, 1, _LDHINT_NONE)
+
+#endif /* HPUX on IA64, non gcc */
+
+
+#if defined(__sgi)     /* SGI compiler */
+/*
+ * SGI IRIX 5
+ * slock_t is defined as a unsigned long. We use the standard SGI
+ * mutex API.
+ *
+ * The following comment is left for historical reasons, but is probably
+ * not a good idea since the mutex ABI is supported.
+ *
+ * This stuff may be supplemented in the future with Masato Kataoka's MIPS-II
+ * assembly from his NECEWS SVR4 port, but we probably ought to retain this
+ * for the R3000 chips out there.
+ */
+#define HAS_TEST_AND_SET
+
+typedef unsigned long slock_t;
+
+#include "mutex.h"
+#define TAS(lock)      (test_and_set(lock,1))
+#define S_UNLOCK(lock) (test_then_and(lock,0))
+#define S_INIT_LOCK(lock)      (test_then_and(lock,0))
+#define S_LOCK_FREE(lock)      (test_then_add(lock,0) == 0)
+#endif  /* __sgi */
+
+
+#if defined(sinix)             /* Sinix */
+/*
+ * SINIX / Reliant UNIX
+ * slock_t is defined as a struct abilock_t, which has a single unsigned long
+ * member. (Basically same as SGI)
+ */
+#define HAS_TEST_AND_SET
+
+#include "abi_mutex.h"
+typedef abilock_t slock_t;
+
+#define TAS(lock)      (!acquire_lock(lock))
+#define S_UNLOCK(lock) release_lock(lock)
+#define S_INIT_LOCK(lock)      init_lock(lock)
+#define S_LOCK_FREE(lock)      (stat_lock(lock) == UNLOCKED)
+#endif  /* sinix */
+
+
+#if defined(_AIX)      /* AIX */
+/*
+ * AIX (POWER)
+ */
+#define HAS_TEST_AND_SET
+
+typedef unsigned int slock_t;
+
+#define TAS(lock)                      _check_lock(lock, 0, 1)
+#define S_UNLOCK(lock)         _clear_lock(lock, 0)
+#endif  /* _AIX */
+
+
+#if defined (nextstep)         /* Nextstep */
+#define HAS_TEST_AND_SET
+
+typedef struct mutex slock_t;
+
+#define APC_SLOCK_NONBLOCKING_LOCK_AVAILABLE 0  /* -- APC: non-blocking lock not available in this case -- */
+
+#define S_LOCK(lock)   mutex_lock(lock)
+#define S_UNLOCK(lock) mutex_unlock(lock)
+#define S_INIT_LOCK(lock)      mutex_init(lock)
+/* For Mach, we have to delve inside the entrails of `struct mutex'.  Ick! */
+#define S_LOCK_FREE(alock)     ((alock)->lock == 0)
+#endif  /* nextstep */
+
+
+/* These are in s_lock.c */
+
+
+#if defined(sun3)              /* Sun3 */
+#define HAS_TEST_AND_SET
+
+typedef unsigned char slock_t;
+#endif
+
+
+#if defined(__sun) && (defined(__i386) || defined(__x86_64__) || defined(__sparc__) || defined(__sparc))
+#define HAS_TEST_AND_SET
+
+#if defined(__i386) || defined(__x86_64__) || defined(__sparcv9) || defined(__sparcv8plus)
+typedef unsigned int slock_t;
+#else
+typedef unsigned char slock_t;
+#endif
+
+extern slock_t pg_atomic_cas(volatile slock_t *lock, slock_t with,
+                                                                         slock_t cmp);
+
+#define TAS(a) (pg_atomic_cas((a), 1, 0) != 0)
+#endif
+
+
+#ifdef WIN32_ONLY_COMPILER
+typedef LONG slock_t;
+
+#define HAS_TEST_AND_SET
+#define TAS(lock) (InterlockedCompareExchange(lock, 1, 0))
+
+#define SPIN_DELAY() spin_delay()
+
+static __forceinline void
+spin_delay(void)
+{
+       /* See comment for gcc code. Same code, MASM syntax */
+       __asm rep nop;
+}
+
+#endif
+
+  
+#endif /* !defined(HAS_TEST_AND_SET) */
+
+
+/* Blow up if we didn't have any way to do spinlocks */
+#ifndef HAS_TEST_AND_SET
+/* -- APC: We have better options in APC than this, that should be specified explicitly so just fail out and notify the user -- */
+#error Spin locking is not available on your platform, please select another locking method (see ./configure --help).
+/* #error PostgreSQL does not have native spinlock support on this platform.  To continue the compilation, rerun configure using --disable-spinlocks.  However, performance will be poor.  Please report this to pgsql-bugs@postgresql.org. */ 
+#endif
+
+
+#else  /* !HAVE_SPINLOCKS */
+
+
+/*
+ * Fake spinlock implementation using semaphores --- slow and prone
+ * to fall foul of kernel limits on number of semaphores, so don't use this
+ * unless you must!  The subroutines appear in spin.c.
+ */
+
+/* -- Removed for APC
+typedef PGSemaphoreData slock_t;
+
+extern bool s_lock_free_sema(volatile slock_t *lock);
+extern void s_unlock_sema(volatile slock_t *lock);
+extern void s_init_lock_sema(volatile slock_t *lock);
+extern int     tas_sema(volatile slock_t *lock);
+
+#define S_LOCK_FREE(lock)      s_lock_free_sema(lock)
+#define S_UNLOCK(lock)  s_unlock_sema(lock)
+#define S_INIT_LOCK(lock)      s_init_lock_sema(lock)
+#define TAS(lock)      tas_sema(lock)
+*/
+
+#endif /* HAVE_SPINLOCKS */
+
+
+/*
+ * Default Definitions - override these above as needed.
+ */
+
+#define APC_SLOCK_NONBLOCKING_LOCK_AVAILABLE 1 /* -- APC: Non-blocking lock available for this case -- */
+
+#if !defined(S_LOCK)
+#define S_LOCK(lock) \
+       do { \
+               if (TAS(lock)) \
+                       s_lock((lock), __FILE__, __LINE__); \
+       } while (0)
+#endif  /* S_LOCK */
+
+#if !defined(S_LOCK_FREE)
+#define S_LOCK_FREE(lock)      (*(lock) == 0)
+#endif  /* S_LOCK_FREE */
+
+#if !defined(S_UNLOCK)
+#define S_UNLOCK(lock)         (*((volatile slock_t *) (lock)) = 0)
+#endif  /* S_UNLOCK */
+
+#if !defined(S_INIT_LOCK)
+#define S_INIT_LOCK(lock)      S_UNLOCK(lock)
+#endif  /* S_INIT_LOCK */
+
+#if !defined(SPIN_DELAY)
+#define SPIN_DELAY()   ((void) 0)
+#endif  /* SPIN_DELAY */
+
+#if !defined(TAS)
+extern int     tas(volatile slock_t *lock);            /* in port/.../tas.s, or
+                                                                                                * s_lock.c */
+
+#define TAS(lock)              tas(lock)
+#endif  /* TAS */
+
+
+/*
+ * Platform-independent out-of-line support routines
+ */
+extern void s_lock(volatile slock_t *lock, const char *file, int line);
+
+/* Support for dynamic adjustment of spins_per_delay */
+#define DEFAULT_SPINS_PER_DELAY  100
+
+#if 0  /* -- Removed from APC use -- */
+extern void set_spins_per_delay(int shared_spins_per_delay);
+extern int     update_spins_per_delay(int shared_spins_per_delay);
+#endif
+
+#endif  /* S_LOCK_H */
diff -ubrN php-5.2.5-orig/ext/apc/php_apc.c php-5.2.5/ext/apc/php_apc.c
--- php-5.2.5-orig/ext/apc/php_apc.c    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/php_apc.c 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,991 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: php_apc.c,v 3.154 2007/12/26 22:31:20 rasmus Exp $ */
+
+#include "apc_zend.h"
+#include "apc_cache.h"
+#include "apc_main.h"
+#include "apc_sma.h"
+#include "apc_lock.h"
+#include "php_globals.h"
+#include "php_ini.h"
+#include "ext/standard/info.h"
+#include "SAPI.h"
+#include "rfc1867.h"
+#include "php_apc.h"
+#if PHP_API_VERSION <= 20020918
+#if HAVE_APACHE
+#ifdef APC_PHP4_STAT
+#undef XtOffsetOf
+#include "httpd.h"
+#endif
+#endif
+#endif
+
+#if HAVE_SIGACTION
+#include "apc_signal.h"
+#endif
+
+/* {{{ PHP_FUNCTION declarations */
+PHP_FUNCTION(apc_cache_info);
+PHP_FUNCTION(apc_clear_cache);
+PHP_FUNCTION(apc_sma_info);
+PHP_FUNCTION(apc_store);
+PHP_FUNCTION(apc_fetch);
+PHP_FUNCTION(apc_delete);
+PHP_FUNCTION(apc_compile_file);
+PHP_FUNCTION(apc_define_constants);
+PHP_FUNCTION(apc_load_constants);
+PHP_FUNCTION(apc_add);
+/* }}} */
+
+/* {{{ ZEND_DECLARE_MODULE_GLOBALS(apc) */
+ZEND_DECLARE_MODULE_GLOBALS(apc)
+
+/* True globals */
+apc_cache_t* apc_cache = NULL;       
+apc_cache_t* apc_user_cache = NULL;
+void* apc_compiled_filters = NULL;
+
+static void php_apc_init_globals(zend_apc_globals* apc_globals TSRMLS_DC)
+{
+    apc_globals->filters = NULL;
+    apc_globals->initialized = 0;
+    apc_globals->cache_stack = apc_stack_create(0);
+    apc_globals->cache_by_default = 1;
+    apc_globals->slam_defense = 0;
+    apc_globals->mem_size_ptr = NULL;
+    apc_globals->fpstat = 1;
+    apc_globals->stat_ctime = 0;
+    apc_globals->write_lock = 1;
+    apc_globals->report_autofilter = 0;
+    apc_globals->apc_optimize_function = NULL;
+#ifdef MULTIPART_EVENT_FORMDATA
+    apc_globals->rfc1867 = 0;
+#endif
+    apc_globals->copied_zvals = NULL;
+#ifdef ZEND_ENGINE_2
+    apc_globals->reserved_offset = -1;
+#endif
+    apc_globals->localcache = 0;
+    apc_globals->localcache_size = 0;
+    apc_globals->lcache = NULL;
+    apc_globals->force_file_update = 0;
+    apc_globals->coredump_unmap = 0;
+}
+
+static void php_apc_shutdown_globals(zend_apc_globals* apc_globals TSRMLS_DC)
+{
+    /* deallocate the ignore patterns */
+    if (apc_globals->filters != NULL) {
+        int i;
+        for (i=0; apc_globals->filters[i] != NULL; i++) {
+            apc_efree(apc_globals->filters[i]);
+        }
+        apc_efree(apc_globals->filters);
+    }
+
+    /* the stack should be empty */
+    assert(apc_stack_size(apc_globals->cache_stack) == 0); 
+
+    /* apc cleanup */
+    apc_stack_destroy(apc_globals->cache_stack);
+
+    /* the rest of the globals are cleaned up in apc_module_shutdown() */
+}
+
+/* }}} */
+
+/* {{{ PHP_INI */
+
+static PHP_INI_MH(OnUpdate_filters) /* {{{ */
+{
+    APCG(filters) = apc_tokenize(new_value, ',');
+    return SUCCESS;
+}
+/* }}} */
+
+static PHP_INI_MH(OnUpdateShmSegments) /* {{{ */
+{
+#if APC_MMAP
+    if(atoi(new_value)!=1) {
+        php_error_docref(NULL TSRMLS_CC, E_WARNING, "apc.shm_segments setting ignored in MMAP mode");
+    }
+    APCG(shm_segments) = 1; 
+#else
+    APCG(shm_segments) = atoi(new_value);
+#endif
+    return SUCCESS;
+}
+/* }}} */
+
+#ifdef MULTIPART_EVENT_FORMDATA
+static PHP_INI_MH(OnUpdateRfc1867Freq) /* {{{ */
+{
+    int tmp;
+    tmp = zend_atoi(new_value, new_value_length);
+    if(tmp < 0) {
+        apc_eprint("rfc1867_freq must be greater than or equal to zero.");
+        return FAILURE;
+    }
+    if(new_value[new_value_length-1] == '%') {
+        if(tmp > 100) {
+            apc_eprint("rfc1867_freq cannot be over 100%%");
+            return FAILURE;
+        }
+        APCG(rfc1867_freq) = tmp / 100.0;
+    } else {
+        APCG(rfc1867_freq) = tmp;
+    }
+    return SUCCESS;
+}
+/* }}} */
+#endif
+
+#ifdef ZEND_ENGINE_2
+#define OnUpdateInt OnUpdateLong
+#endif
+
+PHP_INI_BEGIN()
+STD_PHP_INI_BOOLEAN("apc.enabled",      "1",    PHP_INI_SYSTEM, OnUpdateBool,              enabled,         zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.shm_segments",   "1",    PHP_INI_SYSTEM, OnUpdateShmSegments,       shm_segments,    zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.shm_size",       "30",   PHP_INI_SYSTEM, OnUpdateInt,            shm_size,        zend_apc_globals, apc_globals)
+STD_PHP_INI_BOOLEAN("apc.include_once_override", "0", PHP_INI_SYSTEM, OnUpdateBool,     include_once,    zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.num_files_hint", "1000", PHP_INI_SYSTEM, OnUpdateInt,            num_files_hint,  zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.user_entries_hint", "4096", PHP_INI_SYSTEM, OnUpdateInt,          user_entries_hint, zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.gc_ttl",         "3600", PHP_INI_SYSTEM, OnUpdateInt,            gc_ttl,           zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.ttl",            "0",    PHP_INI_SYSTEM, OnUpdateInt,            ttl,              zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.user_ttl",       "0",    PHP_INI_SYSTEM, OnUpdateInt,            user_ttl,         zend_apc_globals, apc_globals)
+#if APC_MMAP
+STD_PHP_INI_ENTRY("apc.mmap_file_mask",  NULL,  PHP_INI_SYSTEM, OnUpdateString,         mmap_file_mask,   zend_apc_globals, apc_globals)
+#endif
+PHP_INI_ENTRY("apc.filters",        NULL,     PHP_INI_SYSTEM, OnUpdate_filters)
+STD_PHP_INI_BOOLEAN("apc.cache_by_default", "1",  PHP_INI_ALL, OnUpdateBool,         cache_by_default, zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.slam_defense", "0",      PHP_INI_SYSTEM, OnUpdateInt,            slam_defense,     zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.file_update_protection", "2", PHP_INI_SYSTEM, OnUpdateInt,file_update_protection,  zend_apc_globals, apc_globals)
+STD_PHP_INI_BOOLEAN("apc.enable_cli", "0",      PHP_INI_SYSTEM, OnUpdateBool,           enable_cli,       zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.max_file_size", "1M",    PHP_INI_SYSTEM, OnUpdateInt,            max_file_size,    zend_apc_globals, apc_globals)
+STD_PHP_INI_BOOLEAN("apc.stat", "1",            PHP_INI_SYSTEM, OnUpdateBool,           fpstat,           zend_apc_globals, apc_globals)
+STD_PHP_INI_BOOLEAN("apc.stat_ctime", "0",      PHP_INI_SYSTEM, OnUpdateBool,           stat_ctime,       zend_apc_globals, apc_globals)
+STD_PHP_INI_BOOLEAN("apc.write_lock", "1",      PHP_INI_SYSTEM, OnUpdateBool,           write_lock,       zend_apc_globals, apc_globals)
+STD_PHP_INI_BOOLEAN("apc.report_autofilter", "0", PHP_INI_SYSTEM, OnUpdateBool,         report_autofilter,zend_apc_globals, apc_globals)
+#ifdef MULTIPART_EVENT_FORMDATA
+STD_PHP_INI_BOOLEAN("apc.rfc1867", "0", PHP_INI_SYSTEM, OnUpdateBool, rfc1867, zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.rfc1867_prefix", "upload_", PHP_INI_SYSTEM, OnUpdateStringUnempty, rfc1867_prefix, zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.rfc1867_name", "APC_UPLOAD_PROGRESS", PHP_INI_SYSTEM, OnUpdateStringUnempty, rfc1867_name, zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.rfc1867_freq", "0", PHP_INI_SYSTEM, OnUpdateRfc1867Freq, rfc1867_freq, zend_apc_globals, apc_globals)
+#endif
+STD_PHP_INI_BOOLEAN("apc.localcache", "0", PHP_INI_SYSTEM, OnUpdateBool, localcache, zend_apc_globals, apc_globals)
+STD_PHP_INI_ENTRY("apc.localcache.size", "512", PHP_INI_SYSTEM, OnUpdateInt, localcache_size,  zend_apc_globals, apc_globals)
+STD_PHP_INI_BOOLEAN("apc.coredump_unmap", "0", PHP_INI_SYSTEM, OnUpdateBool, coredump_unmap, zend_apc_globals, apc_globals)
+PHP_INI_END()
+
+/* }}} */
+
+/* {{{ PHP_MINFO_FUNCTION(apc) */
+static PHP_MINFO_FUNCTION(apc)
+{
+    php_info_print_table_start();
+    php_info_print_table_row(2, "APC Support", APCG(enabled) ? "enabled" : "disabled");
+    php_info_print_table_row(2, "Version", APC_VERSION);
+#if APC_MMAP
+    php_info_print_table_row(2, "MMAP Support", "Enabled");
+    php_info_print_table_row(2, "MMAP File Mask", APCG(mmap_file_mask));
+#else
+    php_info_print_table_row(2, "MMAP Support", "Disabled");
+#endif
+#if APC_SEM_LOCKS
+    php_info_print_table_row(2, "Locking type", "IPC Semaphore");
+#elif APC_FUTEX_LOCKS
+    php_info_print_table_row(2, "Locking type", "Linux Futex Locks");
+#elif APC_PTHREADMUTEX_LOCKS
+    php_info_print_table_row(2, "Locking type", "pthread mutex Locks");
+#elif APC_SPIN_LOCKS
+    php_info_print_table_row(2, "Locking type", "spin Locks");
+#else
+    php_info_print_table_row(2, "Locking type", "File Locks");
+#endif
+    php_info_print_table_row(2, "Revision", "$Revision: 3.154 $");
+    php_info_print_table_row(2, "Build Date", __DATE__ " " __TIME__);
+    php_info_print_table_end();
+    DISPLAY_INI_ENTRIES();
+}
+/* }}} */
+
+#ifdef MULTIPART_EVENT_FORMDATA
+extern int apc_rfc1867_progress(unsigned int event, void *event_data, void **extra TSRMLS_DC);
+#endif
+
+/* {{{ PHP_MINIT_FUNCTION(apc) */
+static PHP_MINIT_FUNCTION(apc)
+{
+    ZEND_INIT_MODULE_GLOBALS(apc, php_apc_init_globals, php_apc_shutdown_globals);
+
+    REGISTER_INI_ENTRIES();
+
+    /* Disable APC in cli mode unless overridden by apc.enable_cli */
+    if(!APCG(enable_cli) && !strcmp(sapi_module.name, "cli")) {
+        APCG(enabled) = 0;
+    }
+
+    if (APCG(enabled)) {
+        if(APCG(initialized)) {
+            apc_process_init(module_number TSRMLS_CC);
+        } else {
+            apc_module_init(module_number TSRMLS_CC);
+            apc_zend_init(TSRMLS_C);
+            apc_process_init(module_number TSRMLS_CC);
+#ifdef MULTIPART_EVENT_FORMDATA
+            /* File upload progress tracking */
+            if(APCG(rfc1867)) {
+                php_rfc1867_callback = apc_rfc1867_progress;
+            }
+#endif
+        }
+    }
+
+    return SUCCESS;
+}
+/* }}} */
+
+/* {{{ PHP_MSHUTDOWN_FUNCTION(apc) */
+static PHP_MSHUTDOWN_FUNCTION(apc)
+{
+    if(APCG(enabled)) {
+        apc_process_shutdown(TSRMLS_C);
+        apc_zend_shutdown(TSRMLS_C);
+        apc_module_shutdown(TSRMLS_C);
+#ifndef ZTS
+        php_apc_shutdown_globals(&apc_globals);
+#endif
+    }
+#ifdef ZTS
+    ts_free_id(apc_globals_id);
+#endif
+    UNREGISTER_INI_ENTRIES();
+    return SUCCESS;
+}
+/* }}} */
+
+/* {{{ PHP_RINIT_FUNCTION(apc) */
+static PHP_RINIT_FUNCTION(apc)
+{
+    if(APCG(enabled)) {
+        apc_request_init(TSRMLS_C);
+
+#if HAVE_SIGACTION
+        apc_set_signals();
+#endif
+    }
+    return SUCCESS;
+}
+/* }}} */
+
+/* {{{ PHP_RSHUTDOWN_FUNCTION(apc) */
+static PHP_RSHUTDOWN_FUNCTION(apc)
+{
+    if(APCG(enabled)) {
+        apc_request_shutdown(TSRMLS_C);
+    }
+    return SUCCESS;
+}
+/* }}} */
+
+/* {{{ proto array apc_cache_info([string type] [, bool limited]) */
+PHP_FUNCTION(apc_cache_info)
+{
+    apc_cache_info_t* info;
+    apc_cache_link_t* p;
+    zval* list;
+    char *cache_type;
+    int ct_len;
+    zend_bool limited=0;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|sb", &cache_type, &ct_len, &limited) == FAILURE) {
+        return;
+    }
+
+    if(ZEND_NUM_ARGS()) {
+        if(!strcasecmp(cache_type,"user")) {
+            info = apc_cache_info(apc_user_cache, limited);
+        } else if(!strcasecmp(cache_type,"filehits")) {
+#ifdef APC_FILEHITS
+            RETVAL_ZVAL(APCG(filehits), 1, 0);
+            return;
+#else
+            RETURN_FALSE;
+#endif
+        } else {
+            info = apc_cache_info(apc_cache, limited);
+        }
+    } else info = apc_cache_info(apc_cache, limited);
+
+    if(!info) {
+        php_error_docref(NULL TSRMLS_CC, E_WARNING, "No APC info available.  Perhaps APC is not enabled? Check apc.enabled in your ini file");
+        RETURN_FALSE;
+    }
+
+    array_init(return_value);
+    add_assoc_long(return_value, "num_slots", info->num_slots);
+    add_assoc_long(return_value, "ttl", info->ttl);
+    add_assoc_long(return_value, "num_hits", info->num_hits);
+    add_assoc_long(return_value, "num_misses", info->num_misses);
+    add_assoc_long(return_value, "start_time", info->start_time);
+    add_assoc_long(return_value, "expunges", info->expunges);
+    add_assoc_long(return_value, "mem_size", info->mem_size);
+    add_assoc_long(return_value, "num_entries", info->num_entries);
+    add_assoc_long(return_value, "num_inserts", info->num_inserts);
+#ifdef MULTIPART_EVENT_FORMDATA
+    add_assoc_long(return_value, "file_upload_progress", 1);
+#else
+    add_assoc_long(return_value, "file_upload_progress", 0);
+#endif
+#if APC_MMAP
+    add_assoc_stringl(return_value, "memory_type", "mmap", sizeof("mmap")-1, 1);
+#else
+    add_assoc_stringl(return_value, "memory_type", "IPC shared", sizeof("IPC shared")-1, 1);
+#endif
+#if APC_SEM_LOCKS
+    add_assoc_stringl(return_value, "locking_type", "IPC semaphore", sizeof("IPC semaphore")-1, 1);
+#elif APC_FUTEX_LOCKS
+    add_assoc_stringl(return_value, "locking_type", "Linux Futex", sizeof("Linux Futex")-1, 1);
+#elif APC_PTHREADMUTEX_LOCKS
+    add_assoc_stringl(return_value, "locking_type", "pthread mutex", sizeof("pthread mutex")-1, 1);
+#elif APC_SPIN_LOCKS
+    add_assoc_stringl(return_value, "locking_type", "spin", sizeof("spin")-1, 1);
+#else
+    add_assoc_stringl(return_value, "locking_type", "file", sizeof("file")-1, 1);
+#endif
+    if(limited) {
+        apc_cache_free_info(info);
+        return;
+    }
+    
+    ALLOC_INIT_ZVAL(list);
+    array_init(list);
+
+    for (p = info->list; p != NULL; p = p->next) {
+        zval* link;
+
+        ALLOC_INIT_ZVAL(link);
+        array_init(link);
+
+        if(p->type == APC_CACHE_ENTRY_FILE) {
+            add_assoc_string(link, "filename", p->data.file.filename, 1);
+            add_assoc_long(link, "device", p->data.file.device);
+            add_assoc_long(link, "inode", p->data.file.inode);
+            add_assoc_string(link, "type", "file", 1);
+        } else if(p->type == APC_CACHE_ENTRY_USER) {
+            add_assoc_string(link, "info", p->data.user.info, 1);
+            add_assoc_long(link, "ttl", (long)p->data.user.ttl);
+            add_assoc_string(link, "type", "user", 1);
+        }
+        add_assoc_long(link, "num_hits", p->num_hits);
+        add_assoc_long(link, "mtime", p->mtime);
+        add_assoc_long(link, "creation_time", p->creation_time);
+        add_assoc_long(link, "deletion_time", p->deletion_time);
+        add_assoc_long(link, "access_time", p->access_time);
+        add_assoc_long(link, "ref_count", p->ref_count);
+        add_assoc_long(link, "mem_size", p->mem_size);
+        add_next_index_zval(list, link);
+    }
+    add_assoc_zval(return_value, "cache_list", list);
+
+    ALLOC_INIT_ZVAL(list);
+    array_init(list);
+
+    for (p = info->deleted_list; p != NULL; p = p->next) {
+        zval* link;
+
+        ALLOC_INIT_ZVAL(link);
+        array_init(link);
+
+        if(p->type == APC_CACHE_ENTRY_FILE) {
+            add_assoc_string(link, "filename", p->data.file.filename, 1);
+            add_assoc_long(link, "device", p->data.file.device);
+            add_assoc_long(link, "inode", p->data.file.inode);
+            add_assoc_string(link, "type", "file", 1);
+        } else if(p->type == APC_CACHE_ENTRY_USER) {
+            add_assoc_string(link, "info", p->data.user.info, 1);
+            add_assoc_long(link, "ttl", (long)p->data.user.ttl);
+            add_assoc_string(link, "type", "user", 1);
+        }
+        add_assoc_long(link, "num_hits", p->num_hits);
+        add_assoc_long(link, "mtime", p->mtime);
+        add_assoc_long(link, "creation_time", p->creation_time);
+        add_assoc_long(link, "deletion_time", p->deletion_time);
+        add_assoc_long(link, "access_time", p->access_time);
+        add_assoc_long(link, "ref_count", p->ref_count);
+        add_assoc_long(link, "mem_size", p->mem_size);
+        add_next_index_zval(list, link);
+    }
+    add_assoc_zval(return_value, "deleted_list", list);
+
+    apc_cache_free_info(info);
+}
+/* }}} */
+
+/* {{{ proto void apc_clear_cache() */
+PHP_FUNCTION(apc_clear_cache)
+{
+    char *cache_type;
+    int ct_len;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &cache_type, &ct_len) == FAILURE) {
+        return;
+    }
+
+    if(ZEND_NUM_ARGS()) {
+        if(!strcasecmp(cache_type,"user")) {
+            apc_cache_clear(apc_user_cache);
+            RETURN_TRUE;
+        }
+    }
+    apc_cache_clear(apc_cache);
+}
+/* }}} */
+
+/* {{{ proto array apc_sma_info([bool limited]) */
+PHP_FUNCTION(apc_sma_info)
+{
+    apc_sma_info_t* info;
+    zval* block_lists;
+    int i;
+    zend_bool limited = 0;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|b", &limited) == FAILURE) {
+        return;
+    }
+
+    info = apc_sma_info(limited);
+
+    if(!info) {
+        php_error_docref(NULL TSRMLS_CC, E_WARNING, "No APC SMA info available.  Perhaps APC is disabled via apc.enabled?");
+        RETURN_FALSE;
+    }
+
+    array_init(return_value);
+    add_assoc_long(return_value, "num_seg", info->num_seg);
+    add_assoc_long(return_value, "seg_size", info->seg_size);
+    add_assoc_long(return_value, "avail_mem", apc_sma_get_avail_mem());
+
+    if(limited) {
+        apc_sma_free_info(info);
+        return;
+    }
+
+#if ALLOC_DISTRIBUTION
+    {
+        size_t *adist = apc_sma_get_alloc_distribution();
+        zval* list;
+        ALLOC_INIT_ZVAL(list);
+        array_init(list);
+        for(i=0; i<30; i++) {
+            add_next_index_long(list, adist[i]);
+        }
+        add_assoc_zval(return_value, "adist", list);
+    }
+#endif
+    ALLOC_INIT_ZVAL(block_lists);
+    array_init(block_lists);
+
+    for (i = 0; i < info->num_seg; i++) {
+        apc_sma_link_t* p;
+        zval* list;
+
+        ALLOC_INIT_ZVAL(list);
+        array_init(list);
+
+        for (p = info->list[i]; p != NULL; p = p->next) {
+            zval* link;
+
+            ALLOC_INIT_ZVAL(link);
+            array_init(link);
+
+            add_assoc_long(link, "size", p->size);
+            add_assoc_long(link, "offset", p->offset);
+            add_next_index_zval(list, link);
+        }
+        add_next_index_zval(block_lists, list);
+    }
+    add_assoc_zval(return_value, "block_lists", block_lists);
+    apc_sma_free_info(info);
+}
+/* }}} */
+
+/* {{{ _apc_store */
+int _apc_store(char *strkey, int strkey_len, const zval *val, const unsigned int ttl, const int exclusive TSRMLS_DC) {
+    apc_cache_entry_t *entry;
+    apc_cache_key_t key;
+    time_t t;
+    size_t mem_size = 0;
+
+#if PHP_API_VERSION < 20041225
+#if HAVE_APACHE && defined(APC_PHP4_STAT)
+    t = ((request_rec *)SG(server_context))->request_time;
+#else
+    t = time(0);
+#endif
+#else
+    t = sapi_get_request_time(TSRMLS_C);
+#endif
+
+    if(!APCG(enabled)) return 0;
+
+    HANDLE_BLOCK_INTERRUPTIONS();
+
+    APCG(mem_size_ptr) = &mem_size;
+    if (!(entry = apc_cache_make_user_entry(strkey, strkey_len + 1, val, ttl))) {
+        APCG(mem_size_ptr) = NULL;
+        apc_cache_expunge(apc_cache,t);
+        apc_cache_expunge(apc_user_cache,t);
+        HANDLE_UNBLOCK_INTERRUPTIONS();
+        return 0;
+    }
+
+    if (!apc_cache_make_user_key(&key, strkey, strkey_len + 1, t)) {
+        APCG(mem_size_ptr) = NULL;
+        apc_cache_free_entry(entry);
+        apc_cache_expunge(apc_cache,t);
+        apc_cache_expunge(apc_user_cache,t);
+        HANDLE_UNBLOCK_INTERRUPTIONS();
+        return 0;
+    }
+
+    if (!apc_cache_user_insert(apc_user_cache, key, entry, t, exclusive TSRMLS_CC)) {
+        APCG(mem_size_ptr) = NULL;
+        apc_cache_free_entry(entry);
+        apc_cache_expunge(apc_cache,t);
+        apc_cache_expunge(apc_user_cache,t);
+        HANDLE_UNBLOCK_INTERRUPTIONS();
+        return 0;
+    }
+
+    APCG(mem_size_ptr) = NULL;
+
+    HANDLE_UNBLOCK_INTERRUPTIONS();
+
+    return 1;
+}
+/* }}} */
+
+/* {{{ proto int apc_store(string key, zval var [, ttl ])
+ */
+PHP_FUNCTION(apc_store) {
+    zval *val;
+    char *strkey;
+    int strkey_len;
+    long ttl = 0L;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz|l", &strkey, &strkey_len, &val, &ttl) == FAILURE) {
+        return;
+    }
+
+    if(!strkey_len) RETURN_FALSE;
+
+    if(_apc_store(strkey, strkey_len, val, (unsigned int)ttl, 0 TSRMLS_CC)) RETURN_TRUE;
+    RETURN_FALSE;
+}
+/* }}} */
+
+/* {{{ proto int apc_add(string key, zval var [, ttl ])
+ */
+PHP_FUNCTION(apc_add) {
+    zval *val;
+    char *strkey;
+    int strkey_len;
+    long ttl = 0L;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz|l", &strkey, &strkey_len, &val, &ttl) == FAILURE) {
+        return;
+    }
+
+    if(!strkey_len) RETURN_FALSE;
+
+    if(_apc_store(strkey, strkey_len, val, (unsigned int)ttl, 1 TSRMLS_CC)) RETURN_TRUE;
+    RETURN_FALSE;
+}
+/* }}} */
+
+void *apc_erealloc_wrapper(void *ptr, size_t size) {
+    return _erealloc(ptr, size, 0 ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC);
+}
+
+/* {{{ RETURN_ZVAL for php4 */
+#if !defined(ZEND_ENGINE_2) && !defined(RETURN_ZVAL)
+#define RETURN_ZVAL(zv, copy, dtor) { RETVAL_ZVAL(zv, copy, dtor); return; } 
+#define RETVAL_ZVAL(zv, copy, dtor)     ZVAL_ZVAL(return_value, zv, copy, dtor)
+#define ZVAL_ZVAL(z, zv, copy, dtor) {  \
+        int is_ref, refcount;           \
+        is_ref = (z)->is_ref;           \
+        refcount = (z)->refcount;       \
+        *(z) = *(zv);                   \
+        if (copy) {                     \
+            zval_copy_ctor(z);          \
+        }                               \
+        if (dtor) {                     \
+            if (!copy) {                \
+                ZVAL_NULL(zv);          \
+            }                           \
+            zval_ptr_dtor(&zv);         \
+        }                               \
+        (z)->is_ref = is_ref;           \
+        (z)->refcount = refcount;       \
+    }
+#endif
+/* }}} */
+
+/* {{{ proto mixed apc_fetch(mixed key)
+ */
+PHP_FUNCTION(apc_fetch) {
+    zval *key;
+    HashTable *hash;
+    HashPosition hpos;
+    zval **hentry;
+    zval *result;
+    zval *result_entry;
+    char *strkey;
+    int strkey_len;
+    apc_cache_entry_t* entry;
+    time_t t;
+
+    if(!APCG(enabled)) RETURN_FALSE;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &key) == FAILURE) {
+        return;
+    }
+
+#if PHP_API_VERSION < 20041225
+#if HAVE_APACHE && defined(APC_PHP4_STAT)
+    t = ((request_rec *)SG(server_context))->request_time;
+#else 
+    t = time(0);
+#endif
+#else
+    t = sapi_get_request_time(TSRMLS_C);
+#endif
+
+    if(Z_TYPE_P(key) != IS_STRING && Z_TYPE_P(key) != IS_ARRAY) {
+        convert_to_string(key);
+    }
+    
+    if(Z_TYPE_P(key) == IS_STRING) {
+        strkey = Z_STRVAL_P(key);
+        strkey_len = Z_STRLEN_P(key);
+        if(!strkey_len) RETURN_FALSE;
+        entry = apc_cache_user_find(apc_user_cache, strkey, strkey_len + 1, t);
+        if(entry) {
+            /* deep-copy returned shm zval to emalloc'ed return_value */
+            apc_cache_fetch_zval(return_value, entry->data.user.val, apc_php_malloc, apc_php_free);
+            apc_cache_release(apc_user_cache, entry);
+        } else {
+            RETURN_FALSE;
+        }
+    } else if(Z_TYPE_P(key) == IS_ARRAY) {
+        hash = Z_ARRVAL_P(key);
+        MAKE_STD_ZVAL(result);
+        array_init(result); 
+        zend_hash_internal_pointer_reset_ex(hash, &hpos);
+        while(zend_hash_get_current_data_ex(hash, (void**)&hentry, &hpos) == SUCCESS) {
+            if(Z_TYPE_PP(hentry) != IS_STRING) {
+                apc_wprint("apc_fetch() expects a string or array of strings.");
+                RETURN_FALSE;
+            }
+            entry = apc_cache_user_find(apc_user_cache, Z_STRVAL_PP(hentry), Z_STRLEN_PP(hentry) + 1, t);
+            if(entry) {
+                /* deep-copy returned shm zval to emalloc'ed return_value */
+                MAKE_STD_ZVAL(result_entry);
+                apc_cache_fetch_zval(result_entry, entry->data.user.val, apc_php_malloc, apc_php_free);
+                apc_cache_release(apc_user_cache, entry);
+                zend_hash_add(Z_ARRVAL_P(result), Z_STRVAL_PP(hentry), Z_STRLEN_PP(hentry) +1, &result_entry, sizeof(zval*), NULL);
+            } /* don't set values we didn't find */
+            zend_hash_move_forward_ex(hash, &hpos);
+        }
+        RETURN_ZVAL(result, 0, 1);
+    } else {
+        apc_wprint("apc_fetch() expects a string or array of strings.");
+        RETURN_FALSE;
+    }
+
+    return;
+}
+/* }}} */
+
+/* {{{ proto mixed apc_delete(string key)
+ */
+PHP_FUNCTION(apc_delete) {
+    char *strkey;
+    int strkey_len;
+
+    if(!APCG(enabled)) RETURN_FALSE;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &strkey, &strkey_len) == FAILURE) {
+        return;
+    }
+
+    if(!strkey_len) RETURN_FALSE;
+
+    if(apc_cache_user_delete(apc_user_cache, strkey, strkey_len + 1)) {
+        RETURN_TRUE;
+    } else {
+        RETURN_FALSE;
+    }
+}
+/* }}} */
+
+static void _apc_define_constants(zval *constants, zend_bool case_sensitive TSRMLS_DC) {
+    char *const_key;
+    unsigned int const_key_len;
+    zval **entry;
+    HashPosition pos;
+
+    zend_hash_internal_pointer_reset_ex(Z_ARRVAL_P(constants), &pos);
+    while (zend_hash_get_current_data_ex(Z_ARRVAL_P(constants), (void**)&entry, &pos) == SUCCESS) {
+        zend_constant c;
+        int key_type;
+        ulong num_key;
+
+        key_type = zend_hash_get_current_key_ex(Z_ARRVAL_P(constants), &const_key, &const_key_len, &num_key, 0, &pos);
+        if(key_type != HASH_KEY_IS_STRING) {
+            zend_hash_move_forward_ex(Z_ARRVAL_P(constants), &pos);
+            continue;
+        }
+        switch(Z_TYPE_PP(entry)) {
+            case IS_LONG:
+            case IS_DOUBLE:
+            case IS_STRING:
+            case IS_BOOL:
+            case IS_RESOURCE:
+            case IS_NULL:
+                break;
+            default:
+                zend_hash_move_forward_ex(Z_ARRVAL_P(constants), &pos);
+                continue;
+        }
+        c.value = **entry;
+        zval_copy_ctor(&c.value);
+        c.flags = case_sensitive;
+        c.name = zend_strndup(const_key, const_key_len);
+        c.name_len = const_key_len;
+#ifdef ZEND_ENGINE_2
+        c.module_number = PHP_USER_CONSTANT;
+#endif
+        zend_register_constant(&c TSRMLS_CC);
+
+        zend_hash_move_forward_ex(Z_ARRVAL_P(constants), &pos);
+    }
+}
+
+/* {{{ proto mixed apc_define_constants(string key, array constants [,bool case-sensitive])
+ */
+PHP_FUNCTION(apc_define_constants) {
+    char *strkey;
+    int strkey_len;
+    zval *constants = NULL;
+    zend_bool case_sensitive = 1;
+    int argc = ZEND_NUM_ARGS();
+
+    if (zend_parse_parameters(argc TSRMLS_CC, "sa|b", &strkey, &strkey_len, &constants, &case_sensitive) == FAILURE) {
+        return;
+    }
+
+    if(!strkey_len) RETURN_FALSE;
+
+    _apc_define_constants(constants, case_sensitive TSRMLS_CC);
+    if(_apc_store(strkey, strkey_len, constants, 0, 0 TSRMLS_CC)) RETURN_TRUE;
+    RETURN_FALSE;
+} /* }}} */
+
+/* {{{ proto mixed apc_load_constants(string key [, bool case-sensitive])
+ */
+PHP_FUNCTION(apc_load_constants) {
+    char *strkey;
+    int strkey_len;
+    apc_cache_entry_t* entry;
+    time_t t;
+    zend_bool case_sensitive = 1;
+
+    if(!APCG(enabled)) RETURN_FALSE;
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &strkey, &strkey_len, &case_sensitive) == FAILURE) {
+        return;
+    }
+
+    if(!strkey_len) RETURN_FALSE;
+
+#if PHP_API_VERSION < 20041225
+#if HAVE_APACHE && defined(APC_PHP4_STAT)
+    t = ((request_rec *)SG(server_context))->request_time;
+#else 
+    t = time(0);
+#endif
+#else 
+    t = sapi_get_request_time(TSRMLS_C);
+#endif
+
+    entry = apc_cache_user_find(apc_user_cache, strkey, strkey_len + 1, t);
+
+    if(entry) {
+        _apc_define_constants(entry->data.user.val, case_sensitive TSRMLS_CC);
+        apc_cache_release(apc_user_cache, entry);
+        RETURN_TRUE;
+    } else {
+        RETURN_FALSE;
+    }
+}
+/* }}} */
+
+/* {{{ proto boolean apc_compile_file(string filename)
+ */
+PHP_FUNCTION(apc_compile_file) {
+    char *filename;
+    int filename_len;
+    zend_file_handle file_handle;
+    zend_op_array *op_array;
+    long slam_defense = 0;
+    char** filters = NULL;
+    zend_bool cache_by_default = 1;
+    HashTable cg_function_table, cg_class_table, eg_function_table, eg_class_table;
+    HashTable *cg_orig_function_table, *cg_orig_class_table, *eg_orig_function_table, *eg_orig_class_table;
+
+    if(!APCG(enabled)) RETURN_FALSE;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &filename, &filename_len) == FAILURE) {
+        return;
+    }
+
+    if(!filename) RETURN_FALSE;
+
+    /* reset slam defense, filters, and cache_by_default */
+    slam_defense = APCG(slam_defense);
+    APCG(slam_defense) = 0;
+   
+    filters = APCG(filters);
+    APCG(filters) = NULL;
+
+    cache_by_default = APCG(cache_by_default);
+    APCG(cache_by_default) = 1;
+
+    /* Replace function/class tables to avoid namespace conflicts */
+    zend_hash_init_ex(&cg_function_table, 100, NULL, ZEND_FUNCTION_DTOR, 1, 0);
+    cg_orig_function_table = CG(function_table);
+    CG(function_table) = &cg_function_table;
+    zend_hash_init_ex(&cg_class_table, 10, NULL, ZEND_CLASS_DTOR, 1, 0);
+    cg_orig_class_table = CG(class_table);
+    CG(class_table) = &cg_class_table;
+    eg_orig_function_table = EG(function_table);
+    EG(function_table) = CG(function_table);
+    eg_orig_class_table = EG(class_table);
+    EG(class_table) = CG(class_table);
+    APCG(force_file_update) = 1;
+    
+    /* Compile the file, loading it into the cache */
+    file_handle.type = ZEND_HANDLE_FILENAME;
+    file_handle.filename = filename;
+    file_handle.free_filename = 0;
+    file_handle.opened_path = NULL;
+    zend_try {
+        op_array = zend_compile_file(&file_handle, ZEND_INCLUDE TSRMLS_CC);
+    } zend_catch {
+        apc_wprint("Error compiling %s in apc_compile_file.", filename);
+        op_array = NULL;
+    } zend_end_try();
+
+    /* Return class/function tables to previous states, destroy temp tables */
+    APCG(force_file_update) = 0;
+    CG(function_table) = cg_orig_function_table;
+    zend_hash_destroy(&cg_function_table);
+    CG(class_table) = cg_orig_class_table;
+    zend_hash_destroy(&cg_class_table);
+    EG(function_table) = eg_orig_function_table;
+    EG(class_table) = eg_orig_class_table;
+    
+    /* Restore global settings */
+    APCG(slam_defense) = slam_defense;
+    APCG(filters) = filters;
+    APCG(cache_by_default) = cache_by_default;
+
+    if(op_array == NULL) { RETURN_FALSE; }
+
+    /* Free up everything */
+    zend_destroy_file_handle(&file_handle TSRMLS_CC);
+#ifdef ZEND_ENGINE_2
+    destroy_op_array(op_array TSRMLS_CC);
+#else
+    destroy_op_array(op_array);
+#endif
+    efree(op_array);
+
+    RETURN_TRUE;
+}
+/* }}} */
+
+/* {{{ apc_functions[] */
+function_entry apc_functions[] = {
+       PHP_FE(apc_cache_info,          NULL)
+       PHP_FE(apc_clear_cache,         NULL)
+       PHP_FE(apc_sma_info,            NULL)
+       PHP_FE(apc_store,               NULL)
+       PHP_FE(apc_fetch,               NULL)
+       PHP_FE(apc_delete,              NULL)
+       PHP_FE(apc_define_constants,    NULL)
+       PHP_FE(apc_load_constants,      NULL)
+       PHP_FE(apc_compile_file,        NULL)
+       PHP_FE(apc_add,                 NULL)
+       {NULL,          NULL,                           NULL}
+};
+/* }}} */
+
+/* {{{ module definition structure */
+
+zend_module_entry apc_module_entry = {
+       STANDARD_MODULE_HEADER,
+       "apc",
+       apc_functions,
+       PHP_MINIT(apc),
+       PHP_MSHUTDOWN(apc),
+       PHP_RINIT(apc),
+       PHP_RSHUTDOWN(apc),
+       PHP_MINFO(apc),
+       APC_VERSION,
+       STANDARD_MODULE_PROPERTIES
+};
+
+#ifdef COMPILE_DL_APC
+ZEND_GET_MODULE(apc)
+#endif
+/* }}} */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/php_apc.h php-5.2.5/ext/apc/php_apc.h
--- php-5.2.5-orig/ext/apc/php_apc.h    1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/php_apc.h 2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,52 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Daniel Cowgill <dcowgill@communityconnect.com>              |
+  |          George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: php_apc.h,v 3.14 2006/03/12 00:31:45 rasmus Exp $ */
+
+#ifndef PHP_APC_H
+#define PHP_APC_H
+
+#include "apc_php.h"
+#include "apc_globals.h"
+
+extern zend_module_entry apc_module_entry;
+#define apc_module_ptr &apc_module_entry
+
+#define phpext_apc_ptr apc_module_ptr
+
+#endif /* PHP_APC_H */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */
diff -ubrN php-5.2.5-orig/ext/apc/TECHNOTES.txt php-5.2.5/ext/apc/TECHNOTES.txt
--- php-5.2.5-orig/ext/apc/TECHNOTES.txt        1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/TECHNOTES.txt     2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,361 @@
+APC Quick-Start Braindump
+
+This is a rapidly written braindump of how APC currently works in the
+form of a quick-start guide to start hacking on APC.
+
+1. Install and use APC a bit so you know what it does from the end-user's
+   perspective.  
+   user-space functions are all explained here: 
+
+2. Grab the current APC code from CVS:
+    
+    cvs -d:pserver:cvsread@cvs.php.net:/repository login
+    Password: phpfi
+    cvs -d:pserver:cvsread@cvs.php.net:/repository co pecl/apc
+
+   apc/php_apc.c has most of the code for the user-visible stuff.  It is
+   also a regular PHP extension in the sense that there are MINIT, MINFO, 
+   MSHUTDOWN, RSHUTDOWN, etc. functions.  
+
+3. Build it.
+
+   cd pecl/apc
+   phpize
+   ./configure --enable-apc --enable-mmap
+   make
+   cp modules/apc.so /usr/local/lib/php
+   apachectl restart
+
+4. Debugging Hints
+
+     apachectl stop
+     gdb /usr/bin/httpd
+     break ??
+     run -X
+
+   Grab the .gdbinit from the PHP source tree and have a look at the macros.
+
+5. Look through apc/apc_sma.c
+   It is a pretty standard memory allocator.
+
+   apc_sma_malloc, apc_sma_realloc, apc_sma_strdup and apc_sma_free behave to the
+   caller just like malloc, realloc, strdup and free
+
+   On server startup the MINIT hook in php_apc.c calls apc_module_init() in
+   apc_main.c which in turn calls apc_sma_init().  apc_sma_init calls into
+   apc_mmap.c to mmap the specified sized segment (I tend to just use a single
+   segment).  apc_mmap.c should be self-explanatory.  It mmaps a temp file and
+   then unlinks that file right after the mmap to provide automatic shared memory
+   cleanup in case the process dies.
+
+   Once the region has been initialized we stick a header_t at the beginning
+   of the region.  It contains the total size in header->segsize and the number 
+   of bytes available in header->avail.  
+
+   After the header comes a bit of a hack.  A zero-sized block is inserted just
+   to make things easier later on.  And then a huge block that is basically
+   the size of the entire segment minus the two (for the 0-sized block, and this one)
+   block headers.
+
+   The code for this is:
+
+     header = (header_t*) shmaddr;
+     header->segsize = sma_segsize;
+     header->avail = sma_segsize - sizeof(header_t) - sizeof(block_t) - alignword(sizeof(int));
+     memset(&header->lock,0,sizeof(header->lock));
+     sma_lock = &header->lock;
+     block = BLOCKAT(sizeof(header_t));
+     block->size = 0;
+     block->next = sizeof(header_t) + sizeof(block_t);
+     block = BLOCKAT(block->next);
+     block->size = header->avail;
+     block->next = 0;
+
+   So the shared memory looks like this:
+
+     +--------+-------+---------------------------------+
+     | header | block |             block               |
+     +--------+-------+---------------------------------+
+
+   sma_shmaddrs[0] gives you the address of header
+
+   The blocks are just a simple offset-based linked list (so no pointers):
+
+     typedef struct block_t block_t;
+     struct block_t {
+         size_t size;       /* size of this block */
+         size_t next;       /* offset in segment of next free block */
+         size_t canary;     /* canary to check for memory overwrites */
+#ifdef __APC_SMA_DEBUG__
+         int id;         /* identifier for the memory block */
+#endif
+     };
+
+   The BLOCKAT macro turns an offset into an actual address for you:
+
+     #define BLOCKAT(offset) ((block_t*)((char *)shmaddr + offset))
+
+   where shmaddr = sma_shaddrs[0]
+
+   And the OFFSET macro goes the other way:
+
+     #define OFFSET(block) ((int)(((char*)block) - (char*)shmaddr))
+
+   Allocating a block with a call to apc_sma_allocate() walks through the
+   linked list of blocks until it finds one that is >= to the requested size.
+   The first call to apc_sma_allocate() will hit the second block.  We then
+   chop up that block so it looks like this:
+
+     +--------+-------+-------+-------------------------+
+     | header | block | block |         block           |
+     +--------+-------+-------+-------------------------+
+
+   Then we unlink that block from the linked list so it won't show up
+   as an available block on the next allocate.  So we actually have:
+
+     +--------+-------+       +-------------------------+
+     | header | block |------>|         block           |
+     +--------+-------+       +-------------------------+
+
+   And header->avail along with block->size of the remaining large
+   block are updated accordingly.  The arrow there representing the
+   link which now points to a block with an offset further along in
+   the segment.
+
+   When the block is freed using apc_sma_deallocate() the steps are
+   basically just reversed.  The block is put back and then the deallocate
+   code looks at the block before and after to see if the block immediately
+   before and after are free and if so the blocks are combined.  So you never
+   have 2 free blocks next to each other, apart from at the front with that
+   0-sized dummy block.  This mostly prevents fragmentation.  I have been
+   toying with the idea of always allocating block at 2^n boundaries to make
+   it more likely that they will be re-used to cut down on fragmentation further.
+   That's what the POWER_OF_TWO_BLOCKSIZE you see in apc_sma.c is all about.
+  
+   Of course, anytime we fiddle with our shared memory segment we lock using
+   the locking macros, LOCK() and UNLOCK().
+
+   That should mostly take care of the low-level shared memory handling.
+
+6. Next up is apc_main.c and apc_cache.c which implement the meat of the
+   cache logic.
+
+   The apc_main.c file mostly calls functions in apc_sma.c to allocate memory
+   and apc_cache.c for actual cache manipulation.  
+  
+   After the shared memory segment is created and the caches are initialized,
+   apc_module_init() installs the my_compile_file() function overriding Zend's
+   version.  I'll talk about my_compile_file() and the rest of apc_compile.c
+   in the next section.  For now I will stick with apc_main.c and apc_cache.c
+   and talk about the actual caches.  A cache consists of a block of shared
+   memory returned by apc_sma_allocate() via apc_sma_malloc().  You will 
+   notice references to apc_emalloc().  apc_emalloc() is just a thin wrapper
+   around PHP's own emalloc() function which allocates per-process memory from
+   PHP's pool-based memory allocator.  Don't confuse apc_emalloc() and 
+   apc_sma_malloc() as the first is per-process and the second is shared memory.
+
+   The cache is stored in/described by this struct allocated locally using
+   emalloc():
+
+     struct apc_cache_t {
+         void* shmaddr;              /* process (local) address of shared cache */
+         header_t* header;           /* cache header (stored in SHM) */
+         slot_t** slots;             /* array of cache slots (stored in SHM) */
+         int num_slots;              /* number of slots in cache */
+         int gc_ttl;                 /* maximum time on GC list for a slot */
+         int ttl;                    /* if slot is needed and entry's access time is older than this ttl, remove it */
+     };
+
+   Whenever you see functions that take a 'cache' argument, this is what they
+   take.  And apc_cache_create() returns a pointer to this populated struct.
+
+   At the beginning of the cache we have a header.  Remember, we are down a level now
+   from the sma stuff.  The sma stuff is the low-level shared-memory allocator which
+   has its own header which is completely separate and invisible to apc_cache.c.  
+   As far as apc_cache.c is concerned the block of memory it is working with could 
+   have come from a call to malloc().
+
+   The header looks like this:
+
+     typedef struct header_t header_t;
+     struct header_t {
+         int num_hits;               /* total successful hits in cache */
+         int num_misses;             /* total unsuccessful hits in cache */
+         slot_t* deleted_list;       /* linked list of to-be-deleted slots */
+     };
+
+   Since this is at the start of the shared memory segment, these values are accessible
+   across all the yapache processes and hence access to them has to be locked.
+
+   After the header we have an array of slots.  The number of slots is user-defined
+   through the apc.num_slots ini hint.  Each slot is described by:
+
+     typedef struct slot_t slot_t;
+     struct slot_t {
+         apc_cache_key_t key;        /* slot key */
+         apc_cache_entry_t* value;   /* slot value */
+         slot_t* next;               /* next slot in linked list */
+         int num_hits;               /* number of hits to this bucket */
+        time_t creation_time;       /* time slot was initialized */
+        time_t deletion_time;       /* time slot was removed from cache */
+        time_t access_time;         /* time slot was last accessed */
+     };
+
+   The slot_t *next there is a linked list to other slots that happened to hash to the
+   same array position.
+
+   apc_cache_insert() shows what happens on a new cache insert.
+
+     slot = &cache->slots[hash(key) % cache->num_slots];
+
+   cache->slots is our array of slots in the segment.  hash() is simply:
+
+     static unsigned int hash(apc_cache_key_t key)
+     {
+         return key.data.file.device + key.data.file.inode;
+     }
+
+   That is, we use the file's device and inode to uniquely identify it.  Initially
+   we had used the file's full path, but getting that requires a realpath() call which
+   is amazingly expensive since it has to stat each component of the path to resolve
+   symlinks and get rid of relative path components.  By using the device+inode we
+   can uniquely identify a file with a single stat.
+
+   So, on an insert we find the array position in the slots array by hasing the device+inode.
+   If there are currently no other slots there, we just create the slot and stick it into
+   the array:
+
+     *slot = make_slot(key, value, *slot, t)
+
+   If there are other slots already at this position we walk the link list to get to
+   the end.  Here is the loop:
+
+     while (*slot) {
+         if (key_equals((*slot)->key.data.file, key.data.file)) {
+            /* If existing slot for the same device+inode is different, remove it and insert the new version */
+            if ((*slot)->key.mtime != key.mtime) {
+                remove_slot(cache, slot);
+                break;
+            }
+            UNLOCK(cache);
+            return 0;
+        } else if(cache->ttl && (*slot)->access_time < (t - cache->ttl)) {
+             remove_slot(cache, slot);
+             continue;
+         }
+         slot = &(*slot)->next;
+     }
+
+   That first key_equals() check sees if we have an exact match meaning the file
+   is already in the cache.  Since we try to find the file in the cache before doing
+   an insert, this will generally only happen if another process managed to beat us
+   to inserting it.  If we have a newer version of the file at this point we remove
+   it an insert the new version.  If our version is not newer we just return without
+   doing anything.
+
+   While walking the linked list we also check to see if the cache has a TTL defined.
+   If while walking the linked list we see a slot that has expired, we remove it
+   since we are right there looking at it.  This is the only place we remove stale
+   entries unless the shared memory segment fills up and we force a full expunge via
+   apc_cache_expunge().  apc_cache_expunge() walks the entire slots array and walks
+   down every linked list removing stale slots to free up room.  This is obviously
+   slow and thus only happens when we have run out of room.
+
+   apc_cache_find() simply hashes and returns the entry if it is there.  If it is there
+   but older than the mtime in the entry we are looking for, we delete the one that is
+   there and return indicating we didn't find it.
+
+   Next we need to understand what an actual cache entry looks like.  Have a look at
+   apc_cache.h for the structs.  I sort of glossed over the key part earlier saying
+   that we just used the device+inode to find a hash slot.  It is actually a bit more
+   complex than that because we have two kinds of caches.  We have the standard file
+   cache containing opcode arrays, but we also have a user-controlled cache that the
+   user can insert whatever they want into via apc_store().  For the user cache we
+   obviously don't have a device+inode.  The actual identifier is provided by the user
+   as a char *.  So the key is actually a union that looks like this:
+
+     typedef union _apc_cache_key_data_t {
+         struct {
+             int device;             /* the filesystem device */
+             int inode;              /* the filesystem inode */
+         } file;
+         struct {
+             char *identifier;
+         } user;
+     } apc_cache_key_data_t;
+
+     struct apc_cache_key_t {
+         apc_cache_key_data_t data;
+         int mtime;                  /* the mtime of this cached entry */
+     };   
+
+   And we have two sets of functions to do inserts and finds.  apc_cache_user_find() 
+   and apc_cache_user_insert() operate on the user cache.
+
+   Ok, on to the actual cache entry.  Again, because we have two kinds of caches, we
+   also have the corresponding two kinds of cache entries described by this union:
+
+     typedef union _apc_cache_entry_value_t {
+         struct {
+             char *filename;             /* absolute path to source file */
+             zend_op_array* op_array;    /* op_array allocated in shared memory */
+             apc_function_t* functions;  /* array of apc_function_t's */
+             apc_class_t* classes;       /* array of apc_class_t's */
+         } file;
+         struct {
+             char *info;
+             zval *val;
+             unsigned int ttl;
+         } user;
+     } apc_cache_entry_value_t;
+
+   And then the actual cache entry:
+
+     struct apc_cache_entry_t {
+         apc_cache_entry_value_t data;
+         unsigned char type;
+         int ref_count;
+     };
+
+   The user entry is pretty simple and not all that important for now.  I will
+   concentrate on the file entries since that is what holds the actual compiled
+   opcode arrays along with the functions and classes required by the executor.
+
+   apc_cache_make_file_entry() in apc_cache.c shows how an entry is constructed.
+   The main thing to understand here is that we need more than just the opcode
+   array, we also need the functions and classes created by the compiler when it
+   created the opcode array.  As far as the executor is concerned, it doesn't know
+   that it isn't operating in normal mode being called right after the parse/compile
+   phase, so we need to recreate everything so it looks exactly like it would at
+   that point. 
+
+7. my_compile_file() and apc_compile.c
+
+   my_compile_file() in apc_main.c controls where we get the opcodes from.  If
+   the user-specified filters exclude the file from being cached, then we just
+   call the original compile function and return.  Otherwise we fetch the request
+   time from Apache to avoid an extra syscall, create the key so we can look up
+   the file in the cache.  If we find it we stick it on a local stack which we
+   use at cleanup time to make sure we return everything back to normal after a 
+   request and call cached_compile() which installs the functions and classes
+   associated with the op_array in this entry and then copy the op_array down
+   into our memory space for execution.
+
+   If we didn't find the file in the cache, we need to compile it and insert it.
+   To compile it we simply call the original compile function:
+
+      op_array = old_compile_file(h, type TSRMLS_CC);
+
+   To do the insert we need to copy the functions, classes and the opcode array
+   the compile phase created into shared memory.  This all happens in apc_compile.c
+   in the apc_copy_op_array(), apc_copy_new_functions() and apc_copy_new_classes()
+   functions.  Then we make the file entry and do the insert.  Both of these
+   operations were described in the previous section.  
+
+8. The Optimizer
+   
+   The optimizer has been deprecated.
+
+If you made it to the end of this, you should have a pretty good idea of where things are in
+the code.  I skimmed over a lot of things, so plan on spending some time reading through the code.
+
diff -ubrN php-5.2.5-orig/ext/apc/tests/apc_001.phpt php-5.2.5/ext/apc/tests/apc_001.phpt
--- php-5.2.5-orig/ext/apc/tests/apc_001.phpt   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/tests/apc_001.phpt        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,27 @@
+--TEST--
+APC: apc_store/fetch with strings
+--SKIPIF--
+<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+--INI--
+apc.enabled=1
+apc.enable_cli=1
+apc.file_update_protection=0
+--FILE--
+<?php
+
+$foo = 'hello world';
+var_dump($foo);
+apc_store('foo',$foo);
+$bar = apc_fetch('foo');
+var_dump($bar);
+$bar = 'nice';
+var_dump($bar);
+
+?>
+===DONE===
+<?php exit(0); ?>
+--EXPECTF--
+string(11) "hello world"
+string(11) "hello world"
+string(4) "nice"
+===DONE===
diff -ubrN php-5.2.5-orig/ext/apc/tests/apc_002.phpt php-5.2.5/ext/apc/tests/apc_002.phpt
--- php-5.2.5-orig/ext/apc/tests/apc_002.phpt   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/tests/apc_002.phpt        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,34 @@
+--TEST--
+APC: apc_store/fetch with objects
+--SKIPIF--
+<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+--INI--
+apc.enabled=1
+apc.enable_cli=1
+apc.file_update_protection=0
+--FILE--
+<?php
+
+class foo { }
+$foo = new foo;
+var_dump($foo);
+apc_store('foo',$foo);
+unset($foo);
+$bar = apc_fetch('foo');
+var_dump($bar);
+$bar->a = true;
+var_dump($bar);
+
+?>
+===DONE===
+<?php exit(0); ?>
+--EXPECTF--
+object(foo)#%d (0) {
+}
+object(foo)#%d (0) {
+}
+object(foo)#%d (1) {
+  ["a"]=>
+  bool(true)
+}
+===DONE===
diff -ubrN php-5.2.5-orig/ext/apc/tests/apc_003.phpt php-5.2.5/ext/apc/tests/apc_003.phpt
--- php-5.2.5-orig/ext/apc/tests/apc_003.phpt   1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/tests/apc_003.phpt        2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,112 @@
+--TEST--
+APC: apc_store/fetch with objects
+--SKIPIF--
+<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+--INI--
+apc.enabled=1
+apc.enable_cli=1
+apc.file_update_protection=0
+--FILE--
+<?php
+
+class foo { }
+$foo = new foo;
+var_dump($foo);
+apc_store('foo',$foo);
+unset($foo);
+$bar = apc_fetch('foo');
+var_dump($bar);
+$bar->a = true;
+var_dump($bar);
+
+class bar extends foo
+{
+       public    $pub = 'bar';
+       protected $pro = 'bar';
+       private   $pri = 'bar'; // we don't see this, we'd need php 5.1 new serialization
+       
+       function __construct()
+       {
+               $this->bar = true;
+       }
+       
+       function change()
+       {
+               $this->pri = 'mod';
+       }
+}
+
+class baz extends bar
+{
+       private $pri = 'baz';
+
+       function __construct()
+       {
+               parent::__construct();
+               $this->baz = true;
+       }
+}
+
+$baz = new baz;
+var_dump($baz);
+$baz->change();
+var_dump($baz);
+apc_store('baz', $baz);
+unset($baz);
+var_dump(apc_fetch('baz'));
+
+?>
+===DONE===
+<?php exit(0); ?>
+--EXPECTF--
+object(foo)#%d (0) {
+}
+object(foo)#%d (0) {
+}
+object(foo)#%d (1) {
+  ["a"]=>
+  bool(true)
+}
+object(baz)#%d (6) {
+  ["pri:private"]=>
+  string(3) "baz"
+  ["pub"]=>
+  string(3) "bar"
+  ["pro:protected"]=>
+  string(3) "bar"
+  ["pri:private"]=>
+  string(3) "bar"
+  ["bar"]=>
+  bool(true)
+  ["baz"]=>
+  bool(true)
+}
+object(baz)#%d (6) {
+  ["pri:private"]=>
+  string(3) "baz"
+  ["pub"]=>
+  string(3) "bar"
+  ["pro:protected"]=>
+  string(3) "bar"
+  ["pri:private"]=>
+  string(3) "mod"
+  ["bar"]=>
+  bool(true)
+  ["baz"]=>
+  bool(true)
+}
+object(baz)#%d (6) {
+  ["pri:private"]=>
+  string(3) "baz"
+  ["pub"]=>
+  string(3) "bar"
+  ["pro:protected"]=>
+  string(3) "bar"
+  ["pri:private"]=>
+  string(3) "mod"
+  ["bar"]=>
+  bool(true)
+  ["baz"]=>
+  bool(true)
+}
+===DONE===
diff -ubrN php-5.2.5-orig/ext/apc/tests/skipif.inc php-5.2.5/ext/apc/tests/skipif.inc
--- php-5.2.5-orig/ext/apc/tests/skipif.inc     1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/tests/skipif.inc  2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,6 @@
+<?php
+
+if (!extension_loaded("apc")) die("skip");
+//if (!ini_get('apc.enabled')) die("skip apc not enabled");
+
+?>
diff -ubrN php-5.2.5-orig/ext/apc/TODO php-5.2.5/ext/apc/TODO
--- php-5.2.5-orig/ext/apc/TODO 1969-12-31 18:00:00.000000000 -0600
+++ php-5.2.5/ext/apc/TODO      2007-12-26 16:51:32.000000000 -0600
@@ -0,0 +1,30 @@
+Known Bugs
+ 
+1.   Gallery2 doesn't work with PHP5+APC.  There is something wrong
+     with the way methods are restored in some edge case I haven't
+     been able to figure out yet.
+     To reproduce install gallery2 and click down to an individual photo.
+
+2.   apc_store() probably needs some checks to skip trying to store
+     internal classes.  Something along the lines of:
+
+     if(Z_TYPE_P(val) == IS_OBJECT) {
+        zend_class_entry *ce = Z_OBJCE_P(val);
+        if(ce->type == ZEND_INTERNAL_CLASS) {
+            php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot cache internal objects");
+            RETURN_FALSE;
+        }
+     }
+
+     in the apc_store() function in php_apc.c but I am wondering if it needs to do more
+     than that.
+
+Enhancements
+
+1.   Some faster platform-specific locking mechanisms wouldd be nice.  futex support
+     for the 2.6 Linux kernels, and/or x86-specific spinlock support.
+
+2.   The optimizer needs a lot of work.  
+
+3.   Assert() elimination in the optimizer when some debug flag somewhere isn't set.
+