#include <string.h>
+#include <stdlib.h>
#include "utils.h"
-int avl_strcmp(const void *k1, const void *k2, void *ptr)
+int
+avl_strcmp(const void *k1, const void *k2, void *ptr)
{
return strcmp(k1, k2);
}
+void
+vlist_init(struct vlist_tree *tree, avl_tree_comp cmp, vlist_update_cb update)
+{
+ tree->update = update;
+ tree->version = 1;
+
+ avl_init(&tree->avl, cmp, 0, tree);
+}
+
+void
+vlist_delete(struct vlist_tree *tree, struct vlist_node *node)
+{
+ if (!tree->no_delete)
+ avl_delete(&tree->avl, &node->avl);
+ tree->update(tree, NULL, node);
+}
+
+void
+vlist_add(struct vlist_tree *tree, struct vlist_node *node, void *key)
+{
+ struct vlist_node *old_node = NULL;
+ struct avl_node *anode;
+
+ node->avl.key = key;
+ node->version = tree->version;
+
+ anode = avl_find(&tree->avl, key);
+ if (anode) {
+ old_node = container_of(anode, struct vlist_node, avl);
+ if (tree->keep_old || tree->no_delete) {
+ old_node->version = tree->version;
+ goto update_only;
+ }
+
+ avl_delete(&tree->avl, anode);
+ }
+
+ avl_insert(&tree->avl, &node->avl);
+
+update_only:
+ tree->update(tree, node, old_node);
+}
+
+void
+vlist_flush(struct vlist_tree *tree)
+{
+ struct vlist_node *node, *tmp;
+
+ avl_for_each_element_safe(&tree->avl, node, avl, tmp) {
+ if ((node->version == tree->version || node->version == -1) &&
+ tree->version != -1)
+ continue;
+
+ vlist_delete(tree, node);
+ }
+}
+
+void
+vlist_flush_all(struct vlist_tree *tree)
+{
+ tree->version = -1;
+ 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 || n->version == -1) &&
+ tree->version != -1)
+ continue;
+
+ vlist_simple_delete(tree, n);
+ }
+}
+
+void
+vlist_simple_flush_all(struct vlist_simple_tree *tree)
+{
+ tree->version = -1;
+ vlist_simple_flush(tree);
+}