source: trunk/debian/packages/libubox/trunk/vlist.h @ 857

Last change on this file since 857 was 857, checked in by amain, 4 years ago

libubox: initial import / part 4

File size: 2.2 KB
Line 
1/*
2 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
3 *
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.
7 *
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.
15 */
16
17#ifndef __LIBUBOX_VLIST_H
18#define __LIBUBOX_VLIST_H
19
20#include "avl.h"
21
22struct vlist_tree;
23struct vlist_node;
24
25typedef void (*vlist_update_cb)(struct vlist_tree *tree,
26                                struct vlist_node *node_new,
27                                struct vlist_node *node_old);
28
29struct vlist_tree {
30        struct avl_tree avl;
31
32        vlist_update_cb update;
33        bool keep_old;
34        bool no_delete;
35
36        int version;
37};
38
39struct vlist_node {
40        struct avl_node avl;
41        int version;
42};
43
44#define VLIST_TREE_INIT(_name, _comp, _update, _keep_old, _no_delete)   \
45        {                                                               \
46                .avl = AVL_TREE_INIT(_name.avl, _comp, false, NULL),    \
47                .update = _update,                                      \
48                .version = 1,                                           \
49                .keep_old = _keep_old,                                  \
50                .no_delete = _no_delete,                                \
51        }
52
53#define VLIST_TREE(_name, ...)                                          \
54        struct vlist_tree _name =                                       \
55                VLIST_TREE_INIT(_name, __VA_ARGS__)
56
57void vlist_init(struct vlist_tree *tree, avl_tree_comp cmp, vlist_update_cb update);
58
59#define vlist_find(tree, name, element, node_member) \
60        avl_find_element(&(tree)->avl, name, element, node_member.avl)
61
62static inline void vlist_update(struct vlist_tree *tree)
63{
64        tree->version++;
65}
66
67void vlist_add(struct vlist_tree *tree, struct vlist_node *node, const void *key);
68void vlist_delete(struct vlist_tree *tree, struct vlist_node *node);
69void vlist_flush(struct vlist_tree *tree);
70void vlist_flush_all(struct vlist_tree *tree);
71
72#define vlist_for_each_element(tree, element, node_member) \
73        avl_for_each_element(&(tree)->avl, element, node_member.avl)
74
75#endif
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