Mercurial > hg > nginx-vendor-0-7
comparison src/event/ngx_event_timer.h @ 42:41ccba1aba45 NGINX_0_1_21
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> |
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date | Tue, 22 Feb 2005 00:00:00 +0300 |
parents | 74b1868dd3cd |
children | 72eb30262aac |
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41:4d8e7a81b3a0 | 42:41ccba1aba45 |
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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 } |