annotate src/event/ngx_event_timer.h @ 4412:d620f497c50f

Copyright updated.
author Maxim Konovalov <maxim@nginx.com>
date Wed, 18 Jan 2012 15:07:43 +0000
parents 1739becf3f83
children 1f513d7f1b45
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
4412
d620f497c50f Copyright updated.
Maxim Konovalov <maxim@nginx.com>
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4 * Copyright (C) Nginx, Inc.
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 371
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5 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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7
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b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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parents:
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8 #ifndef _NGX_EVENT_TIMER_H_INCLUDED_
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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parents:
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9 #define _NGX_EVENT_TIMER_H_INCLUDED_
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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10
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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11
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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12 #include <ngx_config.h>
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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13 #include <ngx_core.h>
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14 #include <ngx_event.h>
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15
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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16
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d4ea69372b94 nginx-0.1.25-RELEASE import
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17 #define NGX_TIMER_INFINITE (ngx_msec_t) -1
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7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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18
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19 #define NGX_TIMER_LAZY_DELAY 300
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20
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21
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22 ngx_int_t ngx_event_timer_init(ngx_log_t *log);
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9aa426375256 nginx-0.0.1-2003-12-05-10:11:46 import
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23 ngx_msec_t ngx_event_find_timer(void);
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24 void ngx_event_expire_timers(void);
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26
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7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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27 #if (NGX_THREADS)
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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28 extern ngx_mutex_t *ngx_event_timer_mutex;
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29 #endif
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31
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32 extern ngx_thread_volatile ngx_rbtree_t ngx_event_timer_rbtree;
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33
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34
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35 static ngx_inline void
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36 ngx_event_del_timer(ngx_event_t *ev)
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37 {
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38 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
557
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39 "event timer del: %d: %M",
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40 ngx_event_ident(ev->data), ev->timer.key);
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41
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42 ngx_mutex_lock(ngx_event_timer_mutex);
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43
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44 ngx_rbtree_delete(&ngx_event_timer_rbtree, &ev->timer);
205
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45
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46 ngx_mutex_unlock(ngx_event_timer_mutex);
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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47
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e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import
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48 #if (NGX_DEBUG)
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49 ev->timer.left = NULL;
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50 ev->timer.right = NULL;
c1f965ef9718 nginx-0.3.1-RELEASE import
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51 ev->timer.parent = NULL;
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52 #endif
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53
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54 ev->timer_set = 0;
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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55 }
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57
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58 static ngx_inline void
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59 ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer)
205
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60 {
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61 ngx_msec_t key;
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62 ngx_msec_int_t diff;
205
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63
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64 key = ngx_current_msec + timer;
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65
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00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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66 if (ev->timer_set) {
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bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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67
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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68 /*
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69 * Use a previous timer value if difference between it and a new
1739becf3f83 fix comment
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70 * value is less than NGX_TIMER_LAZY_DELAY milliseconds: this allows
1739becf3f83 fix comment
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71 * to minimize the rbtree operations for fast connections.
304
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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72 */
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73
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74 diff = (ngx_msec_int_t) (key - ev->timer.key);
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75
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76 if (ngx_abs(diff) < NGX_TIMER_LAZY_DELAY) {
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77 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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78 "event timer: %d, old: %M, new: %M",
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79 ngx_event_ident(ev->data), ev->timer.key, key);
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80 return;
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81 }
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82
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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83 ngx_del_timer(ev);
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84 }
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85
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86 ev->timer.key = key;
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87
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88 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
ecd9c160f25b nginx-0.3.0-RELEASE import
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89 "event timer add: %d: %M:%M",
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90 ngx_event_ident(ev->data), timer, ev->timer.key);
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91
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92 ngx_mutex_lock(ngx_event_timer_mutex);
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93
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94 ngx_rbtree_insert(&ngx_event_timer_rbtree, &ev->timer);
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95
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96 ngx_mutex_unlock(ngx_event_timer_mutex);
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97
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98 ev->timer_set = 1;
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99 }
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100
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101
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102 #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */