annotate src/event/ngx_event_busy_lock.c @ 563:9c2f3ed7a247 release-0.3.3

nginx-0.3.3-RELEASE import *) Change: the "bl" and "af" parameters of the "listen" directive was renamed to the "backlog" and "accept_filter". *) Feature: the "rcvbuf" and "sndbuf" parameters of the "listen" directive. *) Change: the "$msec" log parameter does not require now the additional the gettimeofday() system call. *) Feature: the -t switch now tests the "listen" directives. *) Bugfix: if the invalid address was specified in the "listen" directive, then after the -HUP signal nginx left an open socket in the CLOSED state. *) Bugfix: the mime type may be incorrectly set to default value for index file with variable in the name; the bug had appeared in 0.3.0. *) Feature: the "timer_resolution" directive. *) Feature: the millisecond "$upstream_response_time" log parameter. *) Bugfix: a temporary file with client request body now is removed just after the response header was transferred to a client. *) Bugfix: OpenSSL 0.9.6 compatibility. *) Bugfix: the SSL certificate and key file paths could not be relative. *) Bugfix: the "ssl_prefer_server_ciphers" directive did not work in the ngx_imap_ssl_module. *) Bugfix: the "ssl_protocols" directive allowed to specify the single protocol only.
author Igor Sysoev <igor@sysoev.ru>
date Wed, 19 Oct 2005 12:33:58 +0000
parents 9b8c906f6e63
children 5dac8c7fb71b
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
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9 #include <ngx_event.h>
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a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
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12 static int ngx_event_busy_lock_look_cachable(ngx_event_busy_lock_t *bl,
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13 ngx_event_busy_lock_ctx_t *ctx);
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14 static void ngx_event_busy_lock_handler(ngx_event_t *ev);
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15 static void ngx_event_busy_lock_posted_handler(ngx_event_t *ev);
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16
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
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17
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
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18 /*
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19 * NGX_OK: the busy lock is held
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20 * NGX_AGAIN: the all busy locks are held but we will wait the specified time
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21 * NGX_BUSY: ctx->timer == 0: there are many the busy locks
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22 * ctx->timer != 0: there are many the waiting locks
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23 * NGX_ERROR: an error occured while the mutex locking
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24 */
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25
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26 ngx_int_t
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27 ngx_event_busy_lock(ngx_event_busy_lock_t *bl, ngx_event_busy_lock_ctx_t *ctx)
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28 {
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29 ngx_int_t rc;
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30
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31 ngx_mutex_lock(bl->mutex);
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32
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33 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ctx->event->log, 0,
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34 "event busy lock: b:%d mb:%d",
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35 bl->busy, bl->max_busy);
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36
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37 if (bl->busy < bl->max_busy) {
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38 bl->busy++;
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39 rc = NGX_OK;
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40
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41 } else if (ctx->timer && bl->waiting < bl->max_waiting) {
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42 bl->waiting++;
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43 ngx_add_timer(ctx->event, ctx->timer);
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44 ctx->event->handler = ngx_event_busy_lock_handler;
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45
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46 if (bl->events) {
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47 bl->last->next = ctx;
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48
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49 } else {
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50 bl->events = ctx;
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51 }
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52
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53 bl->last = ctx;
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54
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55 rc = NGX_AGAIN;
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56
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57 } else {
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58 rc = NGX_BUSY;
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59 }
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60
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61 ngx_mutex_unlock(bl->mutex);
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62
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63 return rc;
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64 }
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65
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66
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67 ngx_int_t
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68 ngx_event_busy_lock_cachable(ngx_event_busy_lock_t *bl,
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69 ngx_event_busy_lock_ctx_t *ctx)
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70 {
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71 ngx_int_t rc;
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72
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73 ngx_mutex_lock(bl->mutex);
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74
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75 rc = ngx_event_busy_lock_look_cachable(bl, ctx);
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76
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77 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ctx->event->log, 0,
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78 "event busy lock: %d w:%d mw:%d",
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79 rc, bl->waiting, bl->max_waiting);
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80
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81 /*
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82 * NGX_OK: no the same request, there is free slot and we locked it
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83 * NGX_BUSY: no the same request and there is no free slot
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84 * NGX_AGAIN: the same request is processing
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85 */
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86
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87 if (rc == NGX_AGAIN) {
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88
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89 if (ctx->timer && bl->waiting < bl->max_waiting) {
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90 bl->waiting++;
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91 ngx_add_timer(ctx->event, ctx->timer);
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92 ctx->event->handler = ngx_event_busy_lock_handler;
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93
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94 if (bl->events == NULL) {
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95 bl->events = ctx;
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96 } else {
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97 bl->last->next = ctx;
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98 }
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99 bl->last = ctx;
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100
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101 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
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102 rc = NGX_BUSY;
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103 }
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104 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
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105
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106 ngx_mutex_unlock(bl->mutex);
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107
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108 return rc;
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109 }
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110
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111
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112 void
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113 ngx_event_busy_unlock(ngx_event_busy_lock_t *bl,
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114 ngx_event_busy_lock_ctx_t *ctx)
276
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115 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
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diff changeset
116 ngx_event_t *ev;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
117 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
118
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
119 ngx_mutex_lock(bl->mutex);
276
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 if (bl->events) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
122 wakeup = bl->events;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
123 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
124
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
125 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
126 wakeup = NULL;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
127 bl->busy--;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
128 }
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 /*
277
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
131 * 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
132 * 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
133 */
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 if (wakeup == NULL) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136 ngx_mutex_unlock(bl->mutex);
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
137 return;
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
138 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
139
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
140 if (ctx->md5) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
141 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
142 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
143 continue;
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
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
146 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
147 wakeup->cache_updated = 1;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
148
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149 ev = wakeup->event;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
150
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
151 ngx_post_event(ev, &ngx_posted_events);
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152 }
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(bl->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 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
157 bl->waiting--;
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 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
160
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161 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
162 wakeup->locked = 1;
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 ev = wakeup->event;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
165
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166 if (ev->timer_set) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
167 ngx_del_timer(ev);
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
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
170 ngx_post_event(ev, &ngx_posted_events);
276
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
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
174
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
175 void
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
176 ngx_event_busy_lock_cancel(ngx_event_busy_lock_t *bl,
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
177 ngx_event_busy_lock_ctx_t *ctx)
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
179 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
180
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
181 ngx_mutex_lock(bl->mutex);
276
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 bl->waiting--;
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 if (ctx == bl->events) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
186 bl->events = ctx->next;
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 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
189 p = bl->events;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
190 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
191 if (c == ctx) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192 p->next = ctx->next;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
193 break;
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 p = c;
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 }
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 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
200 }
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
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
203 static ngx_int_t
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
204 ngx_event_busy_lock_look_cachable(ngx_event_busy_lock_t *bl,
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
205 ngx_event_busy_lock_ctx_t *ctx)
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
206 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
207 ngx_int_t free;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
208 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
209
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
210 bit = 0;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
211 cachable = 0;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
212 free = -1;
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 #if (NGX_SUPPRESS_WARN)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
215 mask = 0;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
216 #endif
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 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
219
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
220 if ((bit & 7) == 0) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
221 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
222 }
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 changeset
224 if (mask & 1) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
225 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
226 ctx->waiting = 1;
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
227 ctx->slot = i;
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
228 return NGX_AGAIN;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
229 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
230 cachable++;
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 } else if (free == -1) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
233 free = 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
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
236 if (cachable == bl->cachable) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
237 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
238 free = i + 1;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
239 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
240
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
241 break;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
242 }
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 mask >>= 1;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
245 bit++;
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
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
248 if (free == -1) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
249 return NGX_BUSY;
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
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
252 #if 0
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
253 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
254 return NGX_BUSY;
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 #endif
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 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
259 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
260 ctx->slot = free;
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 bl->cachable++;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
263 bl->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 return NGX_OK;
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
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
268
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
269 static void
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
270 ngx_event_busy_lock_handler(ngx_event_t *ev)
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
271 {
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
272 ev->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
273
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
274 ngx_post_event(ev, &ngx_posted_events);
276
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
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
277
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
278 static void
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
279 ngx_event_busy_lock_posted_handler(ngx_event_t *ev)
276
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 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
282
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
283 ctx = ev->data;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
284 ctx->handler(ev);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
285 }