2 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 vlist_init(struct vlist_tree
*tree
, avl_tree_comp cmp
, vlist_update_cb update
)
21 tree
->update
= update
;
24 avl_init(&tree
->avl
, cmp
, 0, tree
);
28 vlist_delete(struct vlist_tree
*tree
, struct vlist_node
*node
)
31 avl_delete(&tree
->avl
, &node
->avl
);
32 tree
->update(tree
, NULL
, node
);
36 vlist_add(struct vlist_tree
*tree
, struct vlist_node
*node
, void *key
)
38 struct vlist_node
*old_node
= NULL
;
39 struct avl_node
*anode
;
42 node
->version
= tree
->version
;
44 anode
= avl_find(&tree
->avl
, key
);
46 old_node
= container_of(anode
, struct vlist_node
, avl
);
47 if (tree
->keep_old
|| tree
->no_delete
) {
48 old_node
->version
= tree
->version
;
52 avl_delete(&tree
->avl
, anode
);
55 avl_insert(&tree
->avl
, &node
->avl
);
58 tree
->update(tree
, node
, old_node
);
62 vlist_flush(struct vlist_tree
*tree
)
64 struct vlist_node
*node
, *tmp
;
66 avl_for_each_element_safe(&tree
->avl
, node
, avl
, tmp
) {
67 if ((node
->version
== tree
->version
|| node
->version
== -1) &&
71 vlist_delete(tree
, node
);
76 vlist_flush_all(struct vlist_tree
*tree
)