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1e494cf4 JB |
1 | /* |
2 | * Copyright (C) 2010 The Android Open Source Project | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #ifndef _CUTILS_LIST_H_ | |
18 | #define _CUTILS_LIST_H_ | |
19 | ||
20 | #include <stddef.h> | |
21 | ||
22 | #ifdef __cplusplus | |
23 | extern "C" { | |
24 | #endif /* __cplusplus */ | |
25 | ||
26 | struct listnode | |
27 | { | |
28 | struct listnode *next; | |
29 | struct listnode *prev; | |
30 | }; | |
31 | ||
32 | #define node_to_item(node, container, member) \ | |
33 | (container *) (((char*) (node)) - offsetof(container, member)) | |
34 | ||
35 | #define list_declare(name) \ | |
36 | struct listnode name = { \ | |
37 | .next = &name, \ | |
38 | .prev = &name, \ | |
39 | } | |
40 | ||
41 | #define list_for_each(node, list) \ | |
42 | for (node = (list)->next; node != (list); node = node->next) | |
43 | ||
44 | #define list_for_each_reverse(node, list) \ | |
45 | for (node = (list)->prev; node != (list); node = node->prev) | |
46 | ||
47 | void list_init(struct listnode *list); | |
48 | void list_add_tail(struct listnode *list, struct listnode *item); | |
49 | void list_remove(struct listnode *item); | |
50 | ||
51 | #define list_empty(list) ((list) == (list)->next) | |
52 | #define list_head(list) ((list)->next) | |
53 | #define list_tail(list) ((list)->prev) | |
54 | ||
55 | #ifdef __cplusplus | |
56 | }; | |
57 | #endif /* __cplusplus */ | |
58 | ||
59 | #endif |