|
0
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #ifndef _NGX_EVENT_TIMER_H_INCLUDED_
|
|
|
8 #define _NGX_EVENT_TIMER_H_INCLUDED_
|
|
|
9
|
|
|
10
|
|
|
11 #include <ngx_config.h>
|
|
|
12 #include <ngx_core.h>
|
|
|
13 #include <ngx_event.h>
|
|
|
14
|
|
|
15
|
|
50
|
16 #define NGX_TIMER_INFINITE (ngx_msec_t) -1
|
|
0
|
17
|
|
42
|
18 #define NGX_TIMER_LAZY_DELAY 300
|
|
|
19
|
|
0
|
20
|
|
|
21 ngx_int_t ngx_event_timer_init(ngx_log_t *log);
|
|
|
22 ngx_msec_t ngx_event_find_timer(void);
|
|
106
|
23 void ngx_event_expire_timers(void);
|
|
0
|
24
|
|
|
25
|
|
|
26 #if (NGX_THREADS)
|
|
|
27 extern ngx_mutex_t *ngx_event_timer_mutex;
|
|
|
28 #endif
|
|
|
29
|
|
|
30
|
|
108
|
31 extern ngx_thread_volatile ngx_rbtree_t ngx_event_timer_rbtree;
|
|
0
|
32
|
|
|
33
|
|
42
|
34 static ngx_inline void
|
|
|
35 ngx_event_del_timer(ngx_event_t *ev)
|
|
0
|
36 {
|
|
|
37 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
|
|
106
|
38 "event timer del: %d: %M",
|
|
108
|
39 ngx_event_ident(ev->data), ev->timer.key);
|
|
0
|
40
|
|
112
|
41 ngx_mutex_lock(ngx_event_timer_mutex);
|
|
0
|
42
|
|
108
|
43 ngx_rbtree_delete(&ngx_event_timer_rbtree, &ev->timer);
|
|
0
|
44
|
|
|
45 ngx_mutex_unlock(ngx_event_timer_mutex);
|
|
|
46
|
|
|
47 #if (NGX_DEBUG)
|
|
108
|
48 ev->timer.left = NULL;
|
|
|
49 ev->timer.right = NULL;
|
|
|
50 ev->timer.parent = NULL;
|
|
0
|
51 #endif
|
|
|
52
|
|
|
53 ev->timer_set = 0;
|
|
|
54 }
|
|
|
55
|
|
|
56
|
|
42
|
57 static ngx_inline void
|
|
|
58 ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer)
|
|
0
|
59 {
|
|
110
|
60 ngx_msec_t key;
|
|
|
61 ngx_msec_int_t diff;
|
|
0
|
62
|
|
112
|
63 key = ngx_current_msec + timer;
|
|
0
|
64
|
|
|
65 if (ev->timer_set) {
|
|
|
66
|
|
|
67 /*
|
|
362
|
68 * Use a previous timer value if difference between it and a new
|
|
|
69 * value is less than NGX_TIMER_LAZY_DELAY milliseconds: this allows
|
|
|
70 * to minimize the rbtree operations for fast connections.
|
|
0
|
71 */
|
|
|
72
|
|
110
|
73 diff = (ngx_msec_int_t) (key - ev->timer.key);
|
|
106
|
74
|
|
|
75 if (ngx_abs(diff) < NGX_TIMER_LAZY_DELAY) {
|
|
0
|
76 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
|
|
106
|
77 "event timer: %d, old: %M, new: %M",
|
|
108
|
78 ngx_event_ident(ev->data), ev->timer.key, key);
|
|
0
|
79 return;
|
|
|
80 }
|
|
|
81
|
|
|
82 ngx_del_timer(ev);
|
|
|
83 }
|
|
|
84
|
|
108
|
85 ev->timer.key = key;
|
|
0
|
86
|
|
106
|
87 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
|
|
|
88 "event timer add: %d: %M:%M",
|
|
108
|
89 ngx_event_ident(ev->data), timer, ev->timer.key);
|
|
0
|
90
|
|
112
|
91 ngx_mutex_lock(ngx_event_timer_mutex);
|
|
0
|
92
|
|
108
|
93 ngx_rbtree_insert(&ngx_event_timer_rbtree, &ev->timer);
|
|
0
|
94
|
|
|
95 ngx_mutex_unlock(ngx_event_timer_mutex);
|
|
|
96
|
|
|
97 ev->timer_set = 1;
|
|
|
98 }
|
|
|
99
|
|
|
100
|
|
|
101 #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */
|
