1646
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
|
4 */
|
|
5
|
|
6
|
|
7 #include <ngx_config.h>
|
|
8 #include <ngx_core.h>
|
|
9
|
|
10
|
|
11 #ifndef _NGX_QUEUE_H_INCLUDED_
|
|
12 #define _NGX_QUEUE_H_INCLUDED_
|
|
13
|
|
14
|
|
15 typedef struct ngx_queue_s ngx_queue_t;
|
|
16
|
|
17 struct ngx_queue_s {
|
|
18 ngx_queue_t *prev;
|
|
19 ngx_queue_t *next;
|
|
20 };
|
|
21
|
|
22
|
1684
|
23 #define ngx_queue_init(q) \
|
|
24 (q)->prev = q; \
|
1763
|
25 (q)->next = q
|
1684
|
26
|
|
27
|
1646
|
28 #define ngx_queue_empty(h) \
|
|
29 (h == (h)->prev)
|
|
30
|
|
31
|
|
32 #define ngx_queue_insert_head(h, x) \
|
|
33 (x)->next = (h)->next; \
|
|
34 (x)->next->prev = x; \
|
|
35 (x)->prev = h; \
|
|
36 (h)->next = x
|
|
37
|
|
38
|
|
39 #define ngx_queue_head(h) \
|
|
40 (h)->next
|
|
41
|
|
42
|
|
43 #define ngx_queue_last(h) \
|
|
44 (h)->prev
|
|
45
|
|
46
|
|
47 #if (NGX_DEBUG)
|
|
48
|
|
49 #define ngx_queue_remove(x) \
|
|
50 (x)->next->prev = (x)->prev; \
|
|
51 (x)->prev->next = (x)->next; \
|
|
52 (x)->prev = NULL; \
|
|
53 (x)->next = NULL
|
|
54
|
|
55 #else
|
|
56
|
|
57 #define ngx_queue_remove(x) \
|
|
58 (x)->next->prev = (x)->prev; \
|
|
59 (x)->prev->next = (x)->next
|
|
60
|
|
61 #endif
|
|
62
|
|
63
|
|
64 #define ngx_queue_data(q, type, link) \
|
|
65 (type *) ((u_char *) q - offsetof(type, link))
|
|
66
|
|
67
|
|
68 #endif /* _NGX_QUEUE_H_INCLUDED_ */
|