nginx: src/event/ngx_event

annotate src/event/ngx_event_timer.h @ 6929:3069dd358ba2

Cancelable timers are now preserved if there are other timers. There is no need to cancel timers early if there are other timers blocking shutdown anyway. Preserving such timers allows nginx to continue some periodic work till the shutdown is actually possible. With the new approach, timers with ev->cancelable are simply ignored when checking if there are any timers left during shutdown.

author	Maxim Dounin <mdounin@mdounin.ru>
date	Tue, 07 Mar 2017 18:51:15 +0300
parents	3efdd7788bb0
children

rev	line source
441 da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 371 diff changeset	1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 371 diff changeset	2 /*
444 42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright Igor Sysoev <igor@sysoev.ru> parents: 441 diff changeset	3 * Copyright (C) Igor Sysoev
4412 d620f497c50f Copyright updated. Maxim Konovalov <maxim@nginx.com> parents: 1807 diff changeset	4 * Copyright (C) Nginx, Inc.
441 da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 371 diff changeset	5 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 371 diff changeset	6
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 371 diff changeset	7
50 b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	8 #ifndef _NGX_EVENT_TIMER_H_INCLUDED_
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	9 #define _NGX_EVENT_TIMER_H_INCLUDED_
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	10
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	11
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	12 #include <ngx_config.h>
103 6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import Igor Sysoev <igor@sysoev.ru> parents: 91 diff changeset	13 #include <ngx_core.h>
50 b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	14 #include <ngx_event.h>
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	15
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	16
501 d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 493 diff changeset	17 #define NGX_TIMER_INFINITE (ngx_msec_t) -1
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 230 diff changeset	18
493 975f62e77f02 nginx-0.1.21-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 467 diff changeset	19 #define NGX_TIMER_LAZY_DELAY 300
975f62e77f02 nginx-0.1.21-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 467 diff changeset	20
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	21
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 230 diff changeset	22 ngx_int_t ngx_event_timer_init(ngx_log_t *log);
206 9aa426375256 nginx-0.0.1-2003-12-05-10:11:46 import Igor Sysoev <igor@sysoev.ru> parents: 205 diff changeset	23 ngx_msec_t ngx_event_find_timer(void);
557 ecd9c160f25b nginx-0.3.0-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	24 void ngx_event_expire_timers(void);
6929 3069dd358ba2 Cancelable timers are now preserved if there are other timers. Maxim Dounin <mdounin@mdounin.ru> parents: 5896 diff changeset	25 ngx_int_t ngx_event_no_timers_left(void);
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	26
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	27
5894 1f513d7f1b45 Events: removed broken thread support from event timers. Valentin Bartenev <vbart@nginx.com> parents: 4412 diff changeset	28 extern ngx_rbtree_t ngx_event_timer_rbtree;
207 6e0fef527732 nginx-0.0.1-2003-12-05-20:07:27 import Igor Sysoev <igor@sysoev.ru> parents: 206 diff changeset	29
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	30
493 975f62e77f02 nginx-0.1.21-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 467 diff changeset	31 static ngx_inline void
975f62e77f02 nginx-0.1.21-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 467 diff changeset	32 ngx_event_del_timer(ngx_event_t *ev)
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	33 {
214 e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import Igor Sysoev <igor@sysoev.ru> parents: 213 diff changeset	34 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
557 ecd9c160f25b nginx-0.3.0-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	35 "event timer del: %d: %M",
559 c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	36 ngx_event_ident(ev->data), ev->timer.key);
213 f536f91e8e99 nginx-0.0.1-2003-12-19-15:45:27 import Igor Sysoev <igor@sysoev.ru> parents: 210 diff changeset	37
559 c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	38 ngx_rbtree_delete(&ngx_event_timer_rbtree, &ev->timer);
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	39
214 e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import Igor Sysoev <igor@sysoev.ru> parents: 213 diff changeset	40 #if (NGX_DEBUG)
559 c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	41 ev->timer.left = NULL;
c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	42 ev->timer.right = NULL;
c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	43 ev->timer.parent = NULL;
214 e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import Igor Sysoev <igor@sysoev.ru> parents: 213 diff changeset	44 #endif
e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import Igor Sysoev <igor@sysoev.ru> parents: 213 diff changeset	45
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	46 ev->timer_set = 0;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	47 }
50 b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	48
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	49
493 975f62e77f02 nginx-0.1.21-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 467 diff changeset	50 static ngx_inline void
975f62e77f02 nginx-0.1.21-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 467 diff changeset	51 ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer)
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	52 {
561 e48ebafc6939 nginx-0.3.2-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 559 diff changeset	53 ngx_msec_t key;
e48ebafc6939 nginx-0.3.2-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 559 diff changeset	54 ngx_msec_int_t diff;
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	55
563 9c2f3ed7a247 nginx-0.3.3-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 561 diff changeset	56 key = ngx_current_msec + timer;
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	57
303 00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	58 if (ev->timer_set) {
304 bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import Igor Sysoev <igor@sysoev.ru> parents: 303 diff changeset	59
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import Igor Sysoev <igor@sysoev.ru> parents: 303 diff changeset	60 /*
1807 1739becf3f83 fix comment Igor Sysoev <igor@sysoev.ru> parents: 563 diff changeset	61 * Use a previous timer value if difference between it and a new
1739becf3f83 fix comment Igor Sysoev <igor@sysoev.ru> parents: 563 diff changeset	62 * value is less than NGX_TIMER_LAZY_DELAY milliseconds: this allows
1739becf3f83 fix comment Igor Sysoev <igor@sysoev.ru> parents: 563 diff changeset	63 * to minimize the rbtree operations for fast connections.
304 bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import Igor Sysoev <igor@sysoev.ru> parents: 303 diff changeset	64 */
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import Igor Sysoev <igor@sysoev.ru> parents: 303 diff changeset	65
561 e48ebafc6939 nginx-0.3.2-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 559 diff changeset	66 diff = (ngx_msec_int_t) (key - ev->timer.key);
557 ecd9c160f25b nginx-0.3.0-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	67
ecd9c160f25b nginx-0.3.0-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	68 if (ngx_abs(diff) < NGX_TIMER_LAZY_DELAY) {
303 00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	69 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
557 ecd9c160f25b nginx-0.3.0-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	70 "event timer: %d, old: %M, new: %M",
559 c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	71 ngx_event_ident(ev->data), ev->timer.key, key);
303 00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	72 return;
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	73 }
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	74
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	75 ngx_del_timer(ev);
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	76 }
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	77
559 c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	78 ev->timer.key = key;
303 00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import Igor Sysoev <igor@sysoev.ru> parents: 275 diff changeset	79
557 ecd9c160f25b nginx-0.3.0-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	80 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
ecd9c160f25b nginx-0.3.0-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	81 "event timer add: %d: %M:%M",
559 c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	82 ngx_event_ident(ev->data), timer, ev->timer.key);
213 f536f91e8e99 nginx-0.0.1-2003-12-19-15:45:27 import Igor Sysoev <igor@sysoev.ru> parents: 210 diff changeset	83
559 c1f965ef9718 nginx-0.3.1-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 557 diff changeset	84 ngx_rbtree_insert(&ngx_event_timer_rbtree, &ev->timer);
205 4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	85
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	86 ev->timer_set = 1;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	87 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	88
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	89
59 e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import Igor Sysoev <igor@sysoev.ru> parents: 53 diff changeset	90 #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */

Mercurial > hg > nginx

annotate src/event/ngx_event_timer.h @ 6929:3069dd358ba2