Mercurial > hg > nginx
annotate src/event/ngx_event_timer.c @ 230:1119faf4635a
nginx-0.0.1-2004-01-16-09:15:48 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 16 Jan 2004 06:15:48 +0000 |
parents | 05592fd7a436 |
children | 5238e93961a1 |
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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11 |
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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 void ngx_event_timer_init(void) |
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18 { |
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19 if (ngx_event_timer_rbtree) { |
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20 return; |
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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 |
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27 ngx_msec_t ngx_event_find_timer(void) |
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28 { |
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29 ngx_rbtree_t *node; |
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30 |
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31 if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { |
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32 return 0; |
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33 } |
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34 |
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35 node = ngx_rbtree_min(ngx_event_timer_rbtree, &ngx_event_timer_sentinel); |
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37 return (ngx_msec_t) |
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38 (node->key * NGX_TIMER_RESOLUTION - |
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39 ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION); |
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40 #if 0 |
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41 (node->key * NGX_TIMER_RESOLUTION - ngx_elapsed_msec); |
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42 #endif |
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43 } |
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44 |
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45 |
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46 void ngx_event_expire_timers(ngx_msec_t timer) |
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47 { |
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48 ngx_event_t *ev; |
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49 ngx_rbtree_t *node; |
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50 |
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51 for ( ;; ) { |
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52 |
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53 if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { |
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54 break; |
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55 } |
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56 |
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57 node = ngx_rbtree_min(ngx_event_timer_rbtree, |
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58 &ngx_event_timer_sentinel); |
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59 |
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60 if ((ngx_msec_t) node->key <= (ngx_msec_t) |
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61 (ngx_old_elapsed_msec + timer) / NGX_TIMER_RESOLUTION) |
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62 { |
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63 ev = (ngx_event_t *) |
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64 ((char *) node - offsetof(ngx_event_t, rbtree_key)); |
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65 |
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66 ngx_del_timer(ev); |
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67 |
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68 if (ev->delayed) { |
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69 ev->delayed = 0; |
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70 if (ev->ready == 0) { |
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71 continue; |
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72 } |
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73 |
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74 } else { |
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75 ev->timedout = 1; |
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76 } |
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77 |
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78 ev->event_handler(ev); |
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79 continue; |
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80 } |
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81 |
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82 break; |
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83 } |
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84 } |