-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, int offset)
-{
- tree->key_offset = offset;
- 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)
-{
- struct vlist_node *old_node = NULL;
- struct avl_node *anode;
- void *key = (char *) node + tree->key_offset;
-
- 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)
- continue;
-
- vlist_delete(tree, node);
- }
-}
-
-void
-vlist_flush_all(struct vlist_tree *tree)
-{
- tree->version++;
- vlist_flush(tree);
-}
-
-