Mercurial > hg > nginx
annotate src/event/ngx_event_busy_lock.c @ 277:e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 03 Mar 2004 16:14:15 +0000 |
parents | a2d1ccc96111 |
children | ee394e997c77 |
rev | line source |
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276
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nginx-0.0.2-2004-03-03-00:14:37 import
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1 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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2 #include <ngx_config.h> |
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nginx-0.0.2-2004-03-03-00:14:37 import
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3 #include <ngx_core.h> |
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nginx-0.0.2-2004-03-03-00:14:37 import
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4 #include <ngx_event.h> |
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nginx-0.0.2-2004-03-03-00:14:37 import
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5 |
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6 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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7 static int ngx_event_busy_lock_look_cachable(ngx_event_busy_lock_t *bl, |
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nginx-0.0.2-2004-03-03-00:14:37 import
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8 ngx_event_busy_lock_ctx_t *ctx); |
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nginx-0.0.2-2004-03-03-00:14:37 import
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9 static void ngx_event_busy_lock_handler(ngx_event_t *ev); |
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nginx-0.0.2-2004-03-03-00:14:37 import
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10 static void ngx_event_busy_lock_posted_handler(ngx_event_t *ev); |
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11 |
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12 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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13 /* |
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nginx-0.0.2-2004-03-03-00:14:37 import
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14 * NGX_OK: the busy lock is held |
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nginx-0.0.2-2004-03-03-00:14:37 import
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15 * NGX_BUSY: there are many the busy locks or many the waiting locks |
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nginx-0.0.2-2004-03-03-00:14:37 import
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16 * NGX_AGAIN: the all busy locks are held but we will wait the specified time |
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nginx-0.0.2-2004-03-03-00:14:37 import
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17 * NGX_ERROR: there was error while the mutex locking |
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nginx-0.0.2-2004-03-03-00:14:37 import
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18 */ |
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19 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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20 ngx_int_t ngx_event_busy_lock(ngx_event_busy_lock_t *bl, |
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nginx-0.0.2-2004-03-03-00:14:37 import
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21 ngx_event_busy_lock_ctx_t *ctx) |
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nginx-0.0.2-2004-03-03-00:14:37 import
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22 { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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23 ngx_int_t rc; |
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24 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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25 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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26 return NGX_ERROR; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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27 } |
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nginx-0.0.2-2004-03-03-00:14:37 import
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28 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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29 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ctx->event->log, 0, |
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nginx-0.0.2-2004-03-03-00:14:37 import
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30 "event busy lock: b:%d mb:%d", |
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nginx-0.0.2-2004-03-03-00:14:37 import
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31 bl->busy, bl->max_busy); |
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32 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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33 if (bl->busy < bl->max_busy) { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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34 bl->busy++; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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35 rc = NGX_OK; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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36 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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37 } else if (ctx->timer && bl->waiting < bl->max_waiting) { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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38 bl->waiting++; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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39 ngx_add_timer(ctx->event, ctx->timer); |
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nginx-0.0.2-2004-03-03-00:14:37 import
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40 ctx->event->event_handler = ngx_event_busy_lock_handler; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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41 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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42 if (bl->events == NULL) { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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43 bl->events = ctx; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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44 } else { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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45 bl->last->next = ctx; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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46 } |
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nginx-0.0.2-2004-03-03-00:14:37 import
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47 bl->last = ctx; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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48 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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49 rc = NGX_AGAIN; |
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50 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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51 } else { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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52 rc = NGX_BUSY; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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53 } |
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nginx-0.0.2-2004-03-03-00:14:37 import
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54 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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55 ngx_mutex_unlock(bl->mutex); |
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56 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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57 return rc; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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58 } |
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nginx-0.0.2-2004-03-03-00:14:37 import
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59 |
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60 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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61 ngx_int_t ngx_event_busy_lock_cachable(ngx_event_busy_lock_t *bl, |
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62 ngx_event_busy_lock_ctx_t *ctx) |
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nginx-0.0.2-2004-03-03-00:14:37 import
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63 { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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64 ngx_int_t rc; |
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65 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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66 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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67 return NGX_ERROR; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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68 } |
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nginx-0.0.2-2004-03-03-00:14:37 import
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69 |
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70 rc = ngx_event_busy_lock_look_cachable(bl, ctx); |
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71 |
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72 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ctx->event->log, 0, |
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73 "event busy lock: %d w:%d mw:%d", |
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nginx-0.0.2-2004-03-03-00:14:37 import
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74 rc, bl->waiting, bl->max_waiting); |
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75 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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76 /* |
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nginx-0.0.2-2004-03-03-00:14:37 import
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77 * NGX_OK: no the same request, there is free slot and we locked it |
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nginx-0.0.2-2004-03-03-00:14:37 import
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78 * NGX_BUSY: no the same request and there is no free slot |
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nginx-0.0.2-2004-03-03-00:14:37 import
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79 * NGX_AGAIN: the same request is processing |
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nginx-0.0.2-2004-03-03-00:14:37 import
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80 */ |
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nginx-0.0.2-2004-03-03-00:14:37 import
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81 |
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82 if (rc == NGX_AGAIN) { |
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83 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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84 if (ctx->timer && bl->waiting < bl->max_waiting) { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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85 bl->waiting++; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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86 ngx_add_timer(ctx->event, ctx->timer); |
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nginx-0.0.2-2004-03-03-00:14:37 import
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87 ctx->event->event_handler = ngx_event_busy_lock_handler; |
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88 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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89 if (bl->events == NULL) { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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90 bl->events = ctx; |
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91 } else { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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92 bl->last->next = ctx; |
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93 } |
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94 bl->last = ctx; |
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95 |
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96 } else { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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97 rc = NGX_BUSY; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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98 } |
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nginx-0.0.2-2004-03-03-00:14:37 import
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99 } |
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nginx-0.0.2-2004-03-03-00:14:37 import
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100 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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101 ngx_mutex_unlock(bl->mutex); |
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102 |
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103 return rc; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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104 } |
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105 |
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106 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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107 ngx_int_t ngx_event_busy_unlock(ngx_event_busy_lock_t *bl, |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
108 ngx_event_busy_lock_ctx_t *ctx) |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
109 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
110 ngx_event_t *ev; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
111 ngx_event_busy_lock_ctx_t *wakeup; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
112 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
113 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
114 return NGX_ERROR; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
115 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
116 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
117 if (bl->events) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
118 wakeup = bl->events; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
119 bl->events = bl->events->next; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
120 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
121 } else { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
122 wakeup = NULL; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
123 bl->busy--; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
124 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
125 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
126 /* |
277
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
127 * MP: all ctx's and their queue must be in shared memory, |
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
128 * each ctx has pid to wake up |
276
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
129 */ |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
130 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
131 if (wakeup == NULL) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
132 ngx_mutex_unlock(bl->mutex); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
133 return NGX_OK; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
134 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
135 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
136 if (ctx->md5) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
137 for (wakeup = bl->events; wakeup; wakeup = wakeup->next) { |
277
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
138 if (wakeup->md5 == NULL || wakeup->slot != ctx->slot) { |
276
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
139 continue; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
140 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
141 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
142 wakeup->handler = ngx_event_busy_lock_posted_handler; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
143 wakeup->cache_updated = 1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
144 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
145 ev = wakeup->event; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
146 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
147 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
148 return NGX_ERROR; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
149 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
150 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
151 ev->next = (ngx_event_t *) ngx_posted_events; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
152 ngx_posted_events = ev; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
153 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
154 ngx_mutex_unlock(ngx_posted_events_mutex); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
155 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
156 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
157 ngx_mutex_unlock(bl->mutex); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
158 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
159 } else { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
160 bl->waiting--; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
161 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
162 ngx_mutex_unlock(bl->mutex); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
163 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
164 wakeup->handler = ngx_event_busy_lock_posted_handler; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
165 wakeup->locked = 1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
166 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
167 ev = wakeup->event; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
168 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
169 if (ev->timer_set) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
170 ngx_del_timer(ev); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
171 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
172 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
173 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
174 return NGX_ERROR; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
175 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
176 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
177 ev->next = (ngx_event_t *) ngx_posted_events; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
178 ngx_posted_events = ev; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
179 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
180 ngx_mutex_unlock(ngx_posted_events_mutex); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
181 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
182 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
183 return NGX_OK; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
184 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
185 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
186 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
187 ngx_int_t ngx_event_busy_lock_cancel(ngx_event_busy_lock_t *bl, |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
188 ngx_event_busy_lock_ctx_t *ctx) |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
189 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
190 ngx_event_busy_lock_ctx_t *c, *p; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
191 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
192 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
193 return NGX_ERROR; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
194 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
195 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
196 bl->waiting--; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
197 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
198 if (ctx == bl->events) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
199 bl->events = ctx->next; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
200 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
201 } else { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
202 p = bl->events; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
203 for (c = bl->events->next; c; c = c->next) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
204 if (c == ctx) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
205 p->next = ctx->next; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
206 break; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
207 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
208 p = c; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
209 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
210 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
211 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
212 ngx_mutex_unlock(bl->mutex); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
213 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
214 return NGX_OK; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
215 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
216 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
217 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
218 static int ngx_event_busy_lock_look_cachable(ngx_event_busy_lock_t *bl, |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
219 ngx_event_busy_lock_ctx_t *ctx) |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
220 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
221 ngx_int_t free; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
222 ngx_uint_t i, bit, cachable, mask; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
223 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
224 bit = 0; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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225 cachable = 0; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
226 free = -1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
227 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
228 #if (NGX_SUPPRESS_WARN) |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
229 mask = 0; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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230 #endif |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
231 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
232 for (i = 0; i < bl->max_busy; i++) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
233 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
234 if ((bit & 7) == 0) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
235 mask = bl->md5_mask[i / 8]; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
236 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
237 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
238 if (mask & 1) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
239 if (ngx_memcmp(&bl->md5[i * 16], ctx->md5, 16) == 0) { |
277
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
240 ctx->waiting = 1; |
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
241 ctx->slot = i; |
276
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
242 return NGX_AGAIN; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
243 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
244 cachable++; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
245 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
246 } else if (free == -1) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
247 free = i; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
248 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
249 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
250 if (cachable == bl->cachable) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
251 if (free == -1 && cachable < bl->max_busy) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
252 free = i + 1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
253 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
254 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
255 break; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
256 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
257 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
258 mask >>= 1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
259 bit++; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
260 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
261 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
262 if (free == -1) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
263 return NGX_BUSY; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
264 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
265 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
266 #if 0 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
267 if (bl->busy == bl->max_busy) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
268 return NGX_BUSY; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
269 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
270 #endif |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
271 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
272 ngx_memcpy(&bl->md5[free * 16], ctx->md5, 16); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
273 bl->md5_mask[free / 8] |= 1 << (free & 7); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
274 ctx->slot = free; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
275 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
276 bl->cachable++; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
277 bl->busy++; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
278 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
279 return NGX_OK; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
280 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
281 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
282 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
283 static void ngx_event_busy_lock_handler(ngx_event_t *ev) |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
284 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
285 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
286 return; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
287 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
288 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
289 ev->next = (ngx_event_t *) ngx_posted_events; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
290 ngx_posted_events = ev; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
291 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
292 ngx_mutex_unlock(ngx_posted_events_mutex); |
277
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
293 |
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
294 ev->event_handler = ngx_event_busy_lock_posted_handler; |
276
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
295 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
296 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
297 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
298 static void ngx_event_busy_lock_posted_handler(ngx_event_t *ev) |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
299 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
300 ngx_event_busy_lock_ctx_t *ctx; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
301 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
302 ctx = ev->data; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
303 ctx->handler(ev); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
304 } |