annotate src/event/ngx_event_timer.h @ 304:bcbe876f4262

nginx-0.0.3-2004-04-02-09:14:40 import
author Igor Sysoev <igor@sysoev.ru>
date Fri, 02 Apr 2004 05:14:40 +0000
parents 00c5660d2707
children 39b6f2df45c0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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1 #ifndef _NGX_EVENT_TIMER_H_INCLUDED_
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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2 #define _NGX_EVENT_TIMER_H_INCLUDED_
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3
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4
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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5 #include <ngx_config.h>
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6 #include <ngx_core.h>
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b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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7 #include <ngx_event.h>
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8
b288069a8696 nginx-0.0.1-2003-01-23-21:47:54 import
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9
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7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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10 #define NGX_TIMER_ERROR (ngx_msec_t) -1
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11
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12 /*
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00cafae0bdf1 nginx-0.0.1-2003-12-14-23:10:27 import
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13 * 32 bit timer key value resolution
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9aa426375256 nginx-0.0.1-2003-12-05-10:11:46 import
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14 *
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4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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15 * 1 msec - 49 days
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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16 * 10 msec - 1 years 4 months
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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17 * 50 msec - 6 years 10 months
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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18 * 100 msec - 13 years 8 months
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19 */
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20
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21 #define NGX_TIMER_RESOLUTION 1
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23
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24 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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25 ngx_msec_t ngx_event_find_timer(void);
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26 void ngx_event_expire_timers(ngx_msec_t timer);
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27
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28
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7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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29 #if (NGX_THREADS)
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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30 extern ngx_mutex_t *ngx_event_timer_mutex;
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31 #endif
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33
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34 extern ngx_thread_volatile ngx_rbtree_t *ngx_event_timer_rbtree;
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35 extern ngx_rbtree_t ngx_event_timer_sentinel;
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36
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4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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38 ngx_inline static void ngx_event_del_timer(ngx_event_t *ev)
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39 {
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40 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import
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41 "event timer del: %d: %d",
e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import
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42 ngx_event_ident(ev->data), ev->rbtree_key);
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43
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44 #if (NGX_THREADS)
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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45 if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) {
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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46 return;
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47 }
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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48 #endif
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49
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50 ngx_rbtree_delete((ngx_rbtree_t **) &ngx_event_timer_rbtree,
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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parents: 270
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51 &ngx_event_timer_sentinel,
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9aa426375256 nginx-0.0.1-2003-12-05-10:11:46 import
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52 (ngx_rbtree_t *) &ev->rbtree_key);
205
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53
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54 #if (NGX_THREADS)
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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55 ngx_mutex_unlock(ngx_event_timer_mutex);
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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56 #endif
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57
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58 #if (NGX_DEBUG)
e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import
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59 ev->rbtree_left = NULL;
e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import
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60 ev->rbtree_right = NULL;
e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import
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61 ev->rbtree_parent = NULL;
e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import
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62 #endif
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63
205
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64 ev->timer_set = 0;
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65 }
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66
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67
205
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68 ngx_inline static void ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer)
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69 {
303
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70 ngx_int_t key;
205
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71
303
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72 key = (ngx_int_t)
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00cafae0bdf1 nginx-0.0.1-2003-12-14-23:10:27 import
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73 (ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION
00cafae0bdf1 nginx-0.0.1-2003-12-14-23:10:27 import
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74 + timer) / NGX_TIMER_RESOLUTION;
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75 #if 0
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
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76 (ngx_elapsed_msec + timer) / NGX_TIMER_RESOLUTION;
210
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77 #endif
205
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78
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00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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79 if (ev->timer_set) {
304
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80
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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81 /*
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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82 * Use the previous timer value if a difference between them is less
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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83 * then 100 milliseconds. It allows to minimize the rbtree operations
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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84 * for the fast connections.
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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85 */
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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86
bcbe876f4262 nginx-0.0.3-2004-04-02-09:14:40 import
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87 if (key - ev->rbtree_key < 100 / NGX_TIMER_RESOLUTION) {
303
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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88 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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89 "event timer: %d, old: %d, new: %d",
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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90 ngx_event_ident(ev->data), ev->rbtree_key, key);
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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91 return;
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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92 }
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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93
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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94 ngx_del_timer(ev);
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95 }
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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96
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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97 ev->rbtree_key = key;
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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98
214
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99 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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100 "event timer add: %d: %d",
e0c502f15852 nginx-0.0.1-2003-12-22-12:40:48 import
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parents: 213
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101 ngx_event_ident(ev->data), ev->rbtree_key);
213
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102
270
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103 #if (NGX_THREADS)
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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104 if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) {
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105 return;
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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106 }
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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107 #endif
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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108
272
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109 ngx_rbtree_insert((ngx_rbtree_t **) &ngx_event_timer_rbtree,
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110 &ngx_event_timer_sentinel,
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111 (ngx_rbtree_t *) &ev->rbtree_key);
205
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112
270
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113 #if (NGX_THREADS)
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
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114 ngx_mutex_unlock(ngx_event_timer_mutex);
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diff changeset
115 #endif
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 230
diff changeset
116
205
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
117 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
118 }
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
119
4a9a2b1dd6fa nginx-0.0.1-2003-12-04-17:53:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
120
59
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 53
diff changeset
121 #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */