Mercurial > hg > nginx-quic
annotate src/event/ngx_event_timer.c @ 424:84c527908237
nginx-0.0.10-2004-09-14-09:45:22 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 14 Sep 2004 05:45:22 +0000 |
parents | 02a511569afb |
children | da8c5707af39 |
rev | line source |
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50
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nginx-0.0.1-2003-01-23-21:47:54 import
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1 |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 #include <ngx_event.h> |
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5 |
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nginx-0.0.2-2004-02-23-23:57:12 import
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7 #if (NGX_THREADS) |
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8 ngx_mutex_t *ngx_event_timer_mutex; |
266
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9 #endif |
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11 |
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nginx-0.0.2-2004-03-02-18:40:59 import
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12 ngx_thread_volatile ngx_rbtree_t *ngx_event_timer_rbtree; |
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13 ngx_rbtree_t ngx_event_timer_sentinel; |
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14 |
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15 |
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16 ngx_int_t ngx_event_timer_init(ngx_log_t *log) |
205
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17 { |
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nginx-0.0.1-2004-01-05-23:55:48 import
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18 if (ngx_event_timer_rbtree) { |
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19 #if (NGX_THREADS) |
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20 ngx_event_timer_mutex->log = log; |
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21 #endif |
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22 return NGX_OK; |
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23 } |
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24 |
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25 ngx_event_timer_rbtree = &ngx_event_timer_sentinel; |
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27 #if (NGX_THREADS) |
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28 if (!(ngx_event_timer_mutex = ngx_mutex_init(log, 0))) { |
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29 return NGX_ERROR; |
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30 } |
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31 #endif |
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32 |
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33 return NGX_OK; |
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34 } |
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35 |
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36 |
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nginx-0.0.1-2003-12-05-10:11:46 import
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37 ngx_msec_t ngx_event_find_timer(void) |
205
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38 { |
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nginx-0.0.3-2004-04-14-21:44:28 import
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39 ngx_msec_t timer; |
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40 ngx_rbtree_t *node; |
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41 |
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42 if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { |
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nginx-0.0.3-2004-04-15-00:34:05 import
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43 return NGX_TIMER_INFINITE; |
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nginx-0.0.1-2003-12-19-15:45:27 import
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44 } |
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45 |
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nginx-0.0.2-2004-02-25-23:16:15 import
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46 if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { |
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47 return NGX_TIMER_ERROR; |
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48 } |
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49 |
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nginx-0.0.2-2004-03-01-00:03:02 import
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50 node = ngx_rbtree_min((ngx_rbtree_t *) ngx_event_timer_rbtree, |
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51 &ngx_event_timer_sentinel); |
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52 |
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nginx-0.0.2-2004-02-25-23:16:15 import
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53 ngx_mutex_unlock(ngx_event_timer_mutex); |
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54 |
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nginx-0.0.3-2004-04-14-21:44:28 import
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55 timer = (ngx_msec_t) |
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nginx-0.0.1-2003-12-14-23:10:27 import
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56 (node->key * NGX_TIMER_RESOLUTION - |
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57 ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION); |
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58 #if 0 |
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59 (node->key * NGX_TIMER_RESOLUTION - ngx_elapsed_msec); |
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nginx-0.0.1-2003-12-14-23:10:27 import
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60 #endif |
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nginx-0.0.3-2004-04-14-21:44:28 import
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61 |
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nginx-0.0.3-2004-04-15-00:34:05 import
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62 return timer > 0 ? timer: 0 ; |
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63 } |
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64 |
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65 |
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66 void ngx_event_expire_timers(ngx_msec_t timer) |
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67 { |
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68 ngx_event_t *ev; |
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69 ngx_rbtree_t *node; |
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70 |
379
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71 if (timer < 0) { |
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72 /* avoid the endless loop if the time goes backward for some reason */ |
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73 timer = 0; |
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74 } |
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75 |
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76 for ( ;; ) { |
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77 |
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78 if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { |
371
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nginx-0.0.7-2004-06-28-20:05:02 import
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79 return; |
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80 } |
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81 |
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82 if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { |
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83 return; |
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84 } |
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85 |
272
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86 node = ngx_rbtree_min((ngx_rbtree_t *) ngx_event_timer_rbtree, |
207
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nginx-0.0.1-2003-12-05-20:07:27 import
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87 &ngx_event_timer_sentinel); |
205
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nginx-0.0.1-2003-12-04-17:53:00 import
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88 |
316
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nginx-0.0.3-2004-04-15-00:34:05 import
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89 if (node->key <= (ngx_msec_t) |
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nginx-0.0.1-2003-12-05-20:07:27 import
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90 (ngx_old_elapsed_msec + timer) / NGX_TIMER_RESOLUTION) |
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91 { |
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nginx-0.0.1-2003-12-04-17:53:00 import
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92 ev = (ngx_event_t *) |
206
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nginx-0.0.1-2003-12-05-10:11:46 import
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93 ((char *) node - offsetof(ngx_event_t, rbtree_key)); |
205
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nginx-0.0.1-2003-12-04-17:53:00 import
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94 |
372
c9fdfccebc49
nginx-0.0.7-2004-06-29-01:03:14 import
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95 #if (NGX_THREADS) |
375
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nginx-0.0.7-2004-07-02-19:54:34 import
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96 |
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nginx-0.0.7-2004-07-02-19:54:34 import
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97 if (ngx_threaded && ngx_trylock(ev->lock) == 0) { |
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nginx-0.0.7-2004-07-02-19:54:34 import
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98 |
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99 /* |
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nginx-0.0.7-2004-07-02-19:54:34 import
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100 * We can not change the timer of the event that is been |
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
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parents:
374
diff
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101 * handling by another thread. And we can not easy walk |
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
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parents:
374
diff
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102 * the rbtree to find a next expired timer so we exit the loop. |
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
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103 * However it should be rare case when the event that is |
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
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104 * been handling has expired timer. |
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
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105 */ |
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
changeset
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106 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
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107 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
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108 "event " PTR_FMT " is busy in expire timers", |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
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109 ev); |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
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110 break; |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
111 } |
372
c9fdfccebc49
nginx-0.0.7-2004-06-29-01:03:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
371
diff
changeset
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112 #endif |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
113 |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
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114 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
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115 "event timer del: %d: %d", |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
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116 ngx_event_ident(ev->data), ev->rbtree_key); |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
117 |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
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118 ngx_rbtree_delete((ngx_rbtree_t **) &ngx_event_timer_rbtree, |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
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119 &ngx_event_timer_sentinel, |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
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120 (ngx_rbtree_t *) &ev->rbtree_key); |
205
4a9a2b1dd6fa
nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
121 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
122 ngx_mutex_unlock(ngx_event_timer_mutex); |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
123 |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
124 #if (NGX_DEBUG) |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
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125 ev->rbtree_left = NULL; |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
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126 ev->rbtree_right = NULL; |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
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127 ev->rbtree_parent = NULL; |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
128 #endif |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
129 |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
130 ev->timer_set = 0; |
205
4a9a2b1dd6fa
nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
131 |
375
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
changeset
|
132 #if (NGX_THREADS) |
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
changeset
|
133 if (ngx_threaded) { |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
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134 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) { |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
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|
135 return; |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
changeset
|
136 } |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
changeset
|
137 |
374
213f17e9f776
nginx-0.0.7-2004-07-02-09:47:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
372
diff
changeset
|
138 ev->posted_timedout = 1; |
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
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|
139 ngx_post_event(ev); |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
changeset
|
140 |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
changeset
|
141 ngx_mutex_unlock(ngx_posted_events_mutex); |
375
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
changeset
|
142 |
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
changeset
|
143 ngx_unlock(ev->lock); |
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
changeset
|
144 |
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
changeset
|
145 continue; |
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
275
diff
changeset
|
146 } |
375
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
374
diff
changeset
|
147 #endif |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
266
diff
changeset
|
148 |
374
213f17e9f776
nginx-0.0.7-2004-07-02-09:47:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
372
diff
changeset
|
149 ev->timedout = 1; |
213f17e9f776
nginx-0.0.7-2004-07-02-09:47:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
372
diff
changeset
|
150 |
205
4a9a2b1dd6fa
nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
151 ev->event_handler(ev); |
374
213f17e9f776
nginx-0.0.7-2004-07-02-09:47:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
372
diff
changeset
|
152 |
205
4a9a2b1dd6fa
nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
153 continue; |
4a9a2b1dd6fa
nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
154 } |
374
213f17e9f776
nginx-0.0.7-2004-07-02-09:47:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
372
diff
changeset
|
155 |
205
4a9a2b1dd6fa
nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
156 break; |
4a9a2b1dd6fa
nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
157 } |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
158 |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
159 ngx_mutex_unlock(ngx_event_timer_mutex); |
205
4a9a2b1dd6fa
nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
160 } |