Mercurial > hg > nginx
annotate src/event/ngx_event_timer.c @ 218:05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 05 Jan 2004 20:55:48 +0000 |
parents | f536f91e8e99 |
children | 1119faf4635a |
rev | line source |
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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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7 /* |
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8 * TODO: in multithreaded enviroment all timer operations must be |
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9 * protected by the single mutex |
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10 */ |
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13 ngx_rbtree_t *ngx_event_timer_rbtree; |
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14 ngx_rbtree_t ngx_event_timer_sentinel; |
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15 |
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17 int ngx_event_timer_init(ngx_cycle_t *cycle) |
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18 { |
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19 if (ngx_event_timer_rbtree) { |
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20 return NGX_OK; |
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21 } |
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22 |
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23 ngx_event_timer_rbtree = &ngx_event_timer_sentinel; |
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24 |
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25 #if 0 |
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26 ngx_event_timer_sentinel.left = &ngx_event_timer_sentinel; |
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27 ngx_event_timer_sentinel.right = &ngx_event_timer_sentinel; |
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28 ngx_event_timer_sentinel.parent = &ngx_event_timer_sentinel; |
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29 #endif |
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30 |
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31 return NGX_OK; |
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32 } |
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33 |
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34 |
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35 void ngx_event_timer_done(ngx_cycle_t *cycle) |
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36 { |
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37 } |
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38 |
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39 |
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40 ngx_msec_t ngx_event_find_timer(void) |
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41 { |
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42 ngx_rbtree_t *node; |
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43 |
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44 if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { |
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45 return 0; |
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46 } |
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47 |
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48 node = ngx_rbtree_min(ngx_event_timer_rbtree, &ngx_event_timer_sentinel); |
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50 return (ngx_msec_t) |
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51 (node->key * NGX_TIMER_RESOLUTION - |
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52 ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION); |
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53 #if 0 |
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54 (node->key * NGX_TIMER_RESOLUTION - ngx_elapsed_msec); |
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55 #endif |
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56 } |
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57 |
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58 |
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59 void ngx_event_expire_timers(ngx_msec_t timer) |
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60 { |
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61 ngx_event_t *ev; |
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62 ngx_rbtree_t *node; |
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63 |
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64 for ( ;; ) { |
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65 |
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66 if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { |
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67 break; |
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68 } |
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69 |
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70 node = ngx_rbtree_min(ngx_event_timer_rbtree, |
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71 &ngx_event_timer_sentinel); |
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72 |
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73 if ((ngx_msec_t) node->key <= (ngx_msec_t) |
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74 (ngx_old_elapsed_msec + timer) / NGX_TIMER_RESOLUTION) |
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75 { |
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76 ev = (ngx_event_t *) |
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77 ((char *) node - offsetof(ngx_event_t, rbtree_key)); |
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78 |
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79 ngx_del_timer(ev); |
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80 |
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81 if (ev->delayed) { |
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82 ev->delayed = 0; |
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83 if (ev->ready == 0) { |
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84 continue; |
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85 } |
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86 |
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87 } else { |
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88 ev->timedout = 1; |
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89 } |
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90 |
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91 ev->event_handler(ev); |
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92 continue; |
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93 } |
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94 |
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95 break; |
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96 } |
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97 } |