blob: ab97ee195ebe849c7782fc8c254b03ab353219f4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#if (NGX_THREADS)
ngx_mutex_t *ngx_event_timer_mutex;
#endif
ngx_thread_volatile ngx_rbtree_t *ngx_event_timer_rbtree;
ngx_rbtree_t ngx_event_timer_sentinel;
ngx_int_t ngx_event_timer_init(ngx_log_t *log)
{
if (ngx_event_timer_rbtree) {
#if (NGX_THREADS)
ngx_event_timer_mutex->log = log;
#endif
return NGX_OK;
}
ngx_event_timer_rbtree = &ngx_event_timer_sentinel;
#if (NGX_THREADS)
if (!(ngx_event_timer_mutex = ngx_mutex_init(log, 0))) {
return NGX_ERROR;
}
#endif
return NGX_OK;
}
ngx_msec_t ngx_event_find_timer(void)
{
ngx_msec_t timer;
ngx_rbtree_t *node;
if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) {
return 0;
}
if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) {
return NGX_TIMER_ERROR;
}
node = ngx_rbtree_min((ngx_rbtree_t *) ngx_event_timer_rbtree,
&ngx_event_timer_sentinel);
ngx_mutex_unlock(ngx_event_timer_mutex);
timer = (ngx_msec_t)
(node->key * NGX_TIMER_RESOLUTION -
ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION);
#if 0
(node->key * NGX_TIMER_RESOLUTION - ngx_elapsed_msec);
#endif
return timer > 0 ? timer: -1 ;
}
void ngx_event_expire_timers(ngx_msec_t timer)
{
ngx_event_t *ev;
ngx_rbtree_t *node;
for ( ;; ) {
if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) {
break;
}
if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) {
return;
}
node = ngx_rbtree_min((ngx_rbtree_t *) ngx_event_timer_rbtree,
&ngx_event_timer_sentinel);
ngx_mutex_unlock(ngx_event_timer_mutex);
if ((ngx_msec_t) node->key <= (ngx_msec_t)
(ngx_old_elapsed_msec + timer) / NGX_TIMER_RESOLUTION)
{
ev = (ngx_event_t *)
((char *) node - offsetof(ngx_event_t, rbtree_key));
ngx_del_timer(ev);
if (ev->delayed) {
ev->delayed = 0;
if (ev->ready == 0) {
continue;
}
} else {
ev->timedout = 1;
}
if (ngx_threaded) {
if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
return;
}
ngx_post_event(ev);
ngx_mutex_unlock(ngx_posted_events_mutex);
continue;
}
ev->event_handler(ev);
continue;
}
break;
}
}
|