#include <string.h>
+#include <stdlib.h>
#include "utils.h"
int
return strcmp(k1, k2);
}
-static int
-vlist_cmp(const void *k1, const void *k2, void *ptr)
-{
- struct vlist_tree *vl = ptr;
- return memcmp(k1, k2, vl->data_len);
-}
-
void
-__vlist_init(struct vlist_tree *tree, vlist_update_cb update, int offset, int len)
+__vlist_init(struct vlist_tree *tree, avl_tree_comp cmp,
+ vlist_update_cb update, int offset)
{
- tree->data_offset = offset;
- tree->data_len = len;
+ tree->key_offset = offset;
tree->update = update;
tree->version = 1;
- avl_init(&tree->avl, vlist_cmp, 0, tree);
+ avl_init(&tree->avl, cmp, 0, tree);
}
void
vlist_delete(struct vlist_tree *tree, struct vlist_node *node)
{
- avl_delete(&tree->avl, &node->avl);
+ if (!tree->no_delete)
+ avl_delete(&tree->avl, &node->avl);
tree->update(tree, NULL, node);
}
{
struct vlist_node *old_node = NULL;
struct avl_node *anode;
+ void *key = (char *) node + tree->key_offset;
- node->avl.key = (char *) node + tree->data_offset;
+ node->avl.key = key;
node->version = tree->version;
- anode = avl_find(&tree->avl, (char *) node + tree->data_offset);
+ anode = avl_find(&tree->avl, key);
if (anode) {
old_node = container_of(anode, struct vlist_node, avl);
+ if (tree->keep_old || tree->no_delete)
+ goto update_only;
+
avl_delete(&tree->avl, anode);
}
avl_insert(&tree->avl, &node->avl);
+
+update_only:
tree->update(tree, node, old_node);
}
tree->version++;
vlist_flush(tree);
}
+
+
+void
+__vlist_simple_init(struct vlist_simple_tree *tree, int offset)
+{
+ INIT_LIST_HEAD(&tree->list);
+ tree->version = 1;
+ tree->head_offset = offset;
+}
+
+void
+vlist_simple_delete(struct vlist_simple_tree *tree, struct vlist_simple_node *node)
+{
+ char *ptr;
+
+ list_del(&node->list);
+ ptr = (char *) node - tree->head_offset;
+ free(ptr);
+}
+
+void
+vlist_simple_flush(struct vlist_simple_tree *tree)
+{
+ struct vlist_simple_node *n, *tmp;
+
+ list_for_each_entry_safe(n, tmp, &tree->list, list) {
+ if (n->version == tree->version)
+ continue;
+
+ vlist_simple_delete(tree, n);
+ }
+}
+
+void
+vlist_simple_flush_all(struct vlist_simple_tree *tree)
+{
+ tree->version++;
+ vlist_simple_flush(tree);
+}