Mercurial > hg > nginx
annotate src/event/ngx_event_timer.h @ 559:c1f965ef9718 release-0.3.1
nginx-0.3.1-RELEASE import
*) Bugfix: the segmentation fault occurred when the signal queue
overflowed if the "rtsig" method was used; the bug had appeared in
0.2.0.
*) Change: correct handling of the "\\", "\"", "\'", and "\$" pairs in
SSI.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 10 Oct 2005 12:59:41 +0000 |
parents | ecd9c160f25b |
children | e48ebafc6939 |
rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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7 #ifndef _NGX_EVENT_TIMER_H_INCLUDED_ |
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8 #define _NGX_EVENT_TIMER_H_INCLUDED_ |
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11 #include <ngx_config.h> |
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12 #include <ngx_core.h> |
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13 #include <ngx_event.h> |
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14 |
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15 |
501 | 16 #define NGX_TIMER_INFINITE (ngx_msec_t) -1 |
17 #define NGX_TIMER_ERROR (ngx_msec_t) -2 | |
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18 |
493 | 19 #define NGX_TIMER_LAZY_DELAY 300 |
20 | |
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22 ngx_int_t ngx_event_timer_init(ngx_log_t *log); |
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23 ngx_msec_t ngx_event_find_timer(void); |
557 | 24 void ngx_event_expire_timers(void); |
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27 #if (NGX_THREADS) |
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28 extern ngx_mutex_t *ngx_event_timer_mutex; |
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29 #endif |
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31 |
559 | 32 extern ngx_thread_volatile ngx_rbtree_t ngx_event_timer_rbtree; |
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34 |
493 | 35 static ngx_inline void |
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 | 39 "event timer del: %d: %M", |
559 | 40 ngx_event_ident(ev->data), ev->timer.key); |
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42 if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { |
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43 return; |
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44 } |
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45 |
559 | 46 ngx_rbtree_delete(&ngx_event_timer_rbtree, &ev->timer); |
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48 ngx_mutex_unlock(ngx_event_timer_mutex); |
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50 #if (NGX_DEBUG) |
559 | 51 ev->timer.left = NULL; |
52 ev->timer.right = NULL; | |
53 ev->timer.parent = NULL; | |
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54 #endif |
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56 ev->timer_set = 0; |
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57 } |
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59 |
493 | 60 static ngx_inline void |
61 ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer) | |
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62 { |
557 | 63 ngx_rbtree_key_t key; |
64 ngx_rbtree_key_int_t diff; | |
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557 | 66 key = ngx_current_time + timer; |
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68 if (ev->timer_set) { |
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69 |
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70 /* |
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71 * Use the previous timer value if a difference between them is less |
493 | 72 * then NGX_TIMER_LAZY_DELAY milliseconds. It allows to minimize |
73 * the rbtree operations for the fast connections. | |
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74 */ |
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75 |
559 | 76 diff = (ngx_rbtree_key_int_t) (key - ev->timer.key); |
557 | 77 |
78 if (ngx_abs(diff) < NGX_TIMER_LAZY_DELAY) { | |
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79 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
557 | 80 "event timer: %d, old: %M, new: %M", |
559 | 81 ngx_event_ident(ev->data), ev->timer.key, key); |
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82 return; |
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83 } |
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84 |
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85 ngx_del_timer(ev); |
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86 } |
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87 |
559 | 88 ev->timer.key = key; |
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89 |
557 | 90 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
91 "event timer add: %d: %M:%M", | |
559 | 92 ngx_event_ident(ev->data), timer, ev->timer.key); |
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94 if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { |
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95 return; |
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96 } |
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97 |
559 | 98 ngx_rbtree_insert(&ngx_event_timer_rbtree, &ev->timer); |
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100 ngx_mutex_unlock(ngx_event_timer_mutex); |
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102 ev->timer_set = 1; |
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103 } |
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104 |
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106 #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */ |