Mercurial > hg > nginx-quic
annotate src/event/ngx_event_busy_lock.c @ 297:ee394e997c77
nginx-0.0.3-2004-03-29-21:43:58 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 29 Mar 2004 17:43:58 +0000 |
parents | e91499541410 |
children | af4c6b45a687 |
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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5 |
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6 |
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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_AGAIN: the all busy locks are held but we will wait the specified time |
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nginx-0.0.3-2004-03-29-21:43:58 import
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16 * NGX_BUSY: ctx->timer == 0: there are many the busy locks |
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17 * ctx->timer != 0: there are many the waiting locks |
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18 * NGX_ERROR: an error occured while the mutex locking |
276
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19 */ |
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20 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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21 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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22 ngx_event_busy_lock_ctx_t *ctx) |
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23 { |
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24 ngx_int_t rc; |
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25 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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26 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) { |
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27 return NGX_ERROR; |
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28 } |
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29 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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30 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ctx->event->log, 0, |
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31 "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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32 bl->busy, bl->max_busy); |
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33 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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34 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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35 bl->busy++; |
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36 rc = NGX_OK; |
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37 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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38 } 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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39 bl->waiting++; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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40 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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41 ctx->event->event_handler = ngx_event_busy_lock_handler; |
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42 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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43 if (bl->events == NULL) { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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44 bl->events = ctx; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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45 } else { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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46 bl->last->next = ctx; |
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47 } |
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nginx-0.0.2-2004-03-03-00:14:37 import
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48 bl->last = ctx; |
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49 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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50 rc = NGX_AGAIN; |
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51 |
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52 } else { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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53 rc = NGX_BUSY; |
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54 } |
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55 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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56 ngx_mutex_unlock(bl->mutex); |
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57 |
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58 return rc; |
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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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61 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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62 ngx_int_t ngx_event_busy_lock_cachable(ngx_event_busy_lock_t *bl, |
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63 ngx_event_busy_lock_ctx_t *ctx) |
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64 { |
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65 ngx_int_t rc; |
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66 |
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67 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) { |
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68 return NGX_ERROR; |
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69 } |
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70 |
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71 rc = ngx_event_busy_lock_look_cachable(bl, ctx); |
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72 |
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73 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ctx->event->log, 0, |
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74 "event busy lock: %d w:%d mw:%d", |
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75 rc, bl->waiting, bl->max_waiting); |
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76 |
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77 /* |
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nginx-0.0.2-2004-03-03-00:14:37 import
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78 * NGX_OK: no the same request, there is free slot and we locked it |
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79 * NGX_BUSY: no the same request and there is no free slot |
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80 * NGX_AGAIN: the same request is processing |
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81 */ |
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82 |
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83 if (rc == NGX_AGAIN) { |
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84 |
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85 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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86 bl->waiting++; |
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87 ngx_add_timer(ctx->event, ctx->timer); |
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88 ctx->event->event_handler = ngx_event_busy_lock_handler; |
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89 |
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90 if (bl->events == NULL) { |
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91 bl->events = ctx; |
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92 } else { |
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93 bl->last->next = ctx; |
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94 } |
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95 bl->last = ctx; |
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96 |
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97 } else { |
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nginx-0.0.2-2004-03-03-00:14:37 import
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98 rc = NGX_BUSY; |
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99 } |
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100 } |
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101 |
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nginx-0.0.2-2004-03-03-00:14:37 import
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102 ngx_mutex_unlock(bl->mutex); |
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103 |
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104 return rc; |
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nginx-0.0.2-2004-03-03-00:14:37 import
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105 } |
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106 |
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107 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
108 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
|
109 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
|
110 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
111 ngx_event_t *ev; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
112 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
|
113 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
114 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
|
115 return NGX_ERROR; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
118 if (bl->events) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
119 wakeup = bl->events; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
120 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
|
121 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
122 } else { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
123 wakeup = NULL; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
124 bl->busy--; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
127 /* |
277
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
128 * 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
|
129 * 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
|
130 */ |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
131 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
132 if (wakeup == NULL) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
133 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
|
134 return NGX_OK; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
137 if (ctx->md5) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
138 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
|
139 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
|
140 continue; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
143 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
|
144 wakeup->cache_updated = 1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
145 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
146 ev = wakeup->event; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
147 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
148 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
|
149 return NGX_ERROR; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
152 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
|
153 ngx_posted_events = ev; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
154 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
155 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
|
156 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
157 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
158 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
|
159 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
160 } else { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
161 bl->waiting--; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
162 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
163 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
|
164 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
165 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
|
166 wakeup->locked = 1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
167 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
168 ev = wakeup->event; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
169 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
170 if (ev->timer_set) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
171 ngx_del_timer(ev); |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
174 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
|
175 return NGX_ERROR; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
178 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
|
179 ngx_posted_events = ev; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
180 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
181 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
|
182 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
183 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
184 return NGX_OK; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
188 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
|
189 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
|
190 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
191 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
|
192 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
193 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
|
194 return NGX_ERROR; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
197 bl->waiting--; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
198 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
199 if (ctx == bl->events) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
200 bl->events = ctx->next; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
201 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
202 } else { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
203 p = bl->events; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
204 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
|
205 if (c == ctx) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
206 p->next = ctx->next; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
207 break; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
208 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
209 p = c; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
213 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
|
214 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
215 return NGX_OK; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
219 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
changeset
|
220 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
|
221 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
222 ngx_int_t free; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
223 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
|
224 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
225 bit = 0; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
226 cachable = 0; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
227 free = -1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
228 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
229 #if (NGX_SUPPRESS_WARN) |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
230 mask = 0; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
231 #endif |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
232 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
233 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
|
234 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
235 if ((bit & 7) == 0) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
236 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
|
237 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
238 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
239 if (mask & 1) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
240 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
|
241 ctx->waiting = 1; |
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
242 ctx->slot = i; |
276
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
243 return NGX_AGAIN; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
244 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
245 cachable++; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
246 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
247 } else if (free == -1) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
248 free = i; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
251 if (cachable == bl->cachable) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
252 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
|
253 free = i + 1; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
256 break; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
259 mask >>= 1; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
260 bit++; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
263 if (free == -1) { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
264 return NGX_BUSY; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
267 #if 0 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
268 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
|
269 return NGX_BUSY; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
270 } |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
271 #endif |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
272 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
273 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
|
274 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
|
275 ctx->slot = free; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
276 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
277 bl->cachable++; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
278 bl->busy++; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
279 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
280 return NGX_OK; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
284 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
|
285 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
286 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
|
287 return; |
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
290 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
|
291 ngx_posted_events = ev; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
292 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
293 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
|
294 |
e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
276
diff
changeset
|
295 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
|
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 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
299 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
|
300 { |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
301 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
|
302 |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
303 ctx = ev->data; |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
304 ctx->handler(ev); |
a2d1ccc96111
nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
305 } |