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comparison src/event/ngx_event_timer.h @ 42:41ccba1aba45 NGINX_0_1_21

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nginx 0.1.21 *) Bugfix: the ngx_http_stub_status_module showed incorrect statistics if "rtsig" method was used or if several worker process ran on SMP. *) Bugfix: nginx could not be built by the icc compiler on Linux or if the zlib-1.2.x library was building from sources. *) Bugfix: nginx could not be built on NetBSD 2.0.
author Igor Sysoev <http://sysoev.ru>
date Tue, 22 Feb 2005 00:00:00 +0300
parents 74b1868dd3cd
children 72eb30262aac
comparison
equal deleted inserted replaced
41:4d8e7a81b3a0 42:41ccba1aba45
14 14
15 15
16 #define NGX_TIMER_INFINITE -1 16 #define NGX_TIMER_INFINITE -1
17 #define NGX_TIMER_ERROR -2 17 #define NGX_TIMER_ERROR -2
18 18
19
19 /* 20 /*
20 * 32 bit timer key value resolution 21 * the 32-bit timer key value resolution
21 * 22 *
22 * 1 msec - 24 days 23 * 1 msec - 24 days
23 * 10 msec - 8 months 24 * 10 msec - 8 months
24 * 50 msec - 3 years 5 months 25 * 50 msec - 3 years 5 months
25 * 100 msec - 6 years 10 months 26 * 100 msec - 6 years 10 months
26 */ 27 */
27 28
28 #define NGX_TIMER_RESOLUTION 1 29 #define NGX_TIMER_RESOLUTION 1
30
31 #define NGX_TIMER_LAZY_DELAY 300
29 32
30 33
31 ngx_int_t ngx_event_timer_init(ngx_log_t *log); 34 ngx_int_t ngx_event_timer_init(ngx_log_t *log);
32 ngx_msec_t ngx_event_find_timer(void); 35 ngx_msec_t ngx_event_find_timer(void);
33 void ngx_event_expire_timers(ngx_msec_t timer); 36 void ngx_event_expire_timers(ngx_msec_t timer);
40 43
41 extern ngx_thread_volatile ngx_rbtree_t *ngx_event_timer_rbtree; 44 extern ngx_thread_volatile ngx_rbtree_t *ngx_event_timer_rbtree;
42 extern ngx_rbtree_t ngx_event_timer_sentinel; 45 extern ngx_rbtree_t ngx_event_timer_sentinel;
43 46
44 47
45 static ngx_inline void ngx_event_del_timer(ngx_event_t *ev) 48 static ngx_inline void
49 ngx_event_del_timer(ngx_event_t *ev)
46 { 50 {
47 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, 51 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
48 "event timer del: %d: %d", 52 "event timer del: %d: %d",
49 ngx_event_ident(ev->data), ev->rbtree_key); 53 ngx_event_ident(ev->data), ev->rbtree_key);
50 54
66 70
67 ev->timer_set = 0; 71 ev->timer_set = 0;
68 } 72 }
69 73
70 74
71 static ngx_inline void ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer) 75 static ngx_inline void
76 ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer)
72 { 77 {
73 ngx_int_t key; 78 ngx_int_t key;
74 79
75 key = (ngx_int_t) 80 key = (ngx_int_t)
76 (ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION 81 (ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION
81 86
82 if (ev->timer_set) { 87 if (ev->timer_set) {
83 88
84 /* 89 /*
85 * Use the previous timer value if a difference between them is less 90 * Use the previous timer value if a difference between them is less
86 * then 100 milliseconds. It allows to minimize the rbtree operations 91 * then NGX_TIMER_LAZY_DELAY milliseconds. It allows to minimize
87 * for the fast connections. 92 * the rbtree operations for the fast connections.
88 */ 93 */
89 94
90 if (abs(key - ev->rbtree_key) < 100 / NGX_TIMER_RESOLUTION) { 95 if (abs(key - ev->rbtree_key)
96 < NGX_TIMER_LAZY_DELAY / NGX_TIMER_RESOLUTION)
97 {
91 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, 98 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
92 "event timer: %d, old: %i, new: %i", 99 "event timer: %d, old: %i, new: %i",
93 ngx_event_ident(ev->data), ev->rbtree_key, key); 100 ngx_event_ident(ev->data), ev->rbtree_key, key);
94 return; 101 return;
95 } 102 }