annotate src/event/ngx_event_mutex.c @ 212:56688ed172c8 NGINX_0_3_53

nginx 0.3.53 *) Change: the "add_header" directive adds the string to 204, 301, and 302 responses. *) Feature: the "server" directive in the "upstream" context supports the "weight" parameter. *) Feature: the "server_name" directive supports the "*" wildcard. *) Feature: nginx supports the request body size more than 2G. *) Bugfix: if a client was successfully authorized using "satisfy_any on", then anyway the message "access forbidden by rule" was written in the log. *) Bugfix: the "PUT" method may erroneously not create a file and return the 409 code. *) Bugfix: if the IMAP/POP3 backend returned an error, then nginx continued proxying anyway.
author Igor Sysoev <http://sysoev.ru>
date Fri, 07 Jul 2006 00:00:00 +0400
parents 46833bd150cb
children d0f7a625f27c
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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12 ngx_int_t ngx_event_mutex_timedlock(ngx_event_mutex_t *m, ngx_msec_t timer,
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13 ngx_event_t *ev)
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14 {
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15 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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16 "lock event mutex %p lock:%XD", m, m->lock);
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18 if (m->lock) {
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20 if (m->events == NULL) {
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21 m->events = ev;
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22
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23 } else {
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24 m->last->next = ev;
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25 }
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27 m->last = ev;
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28 ev->next = NULL;
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29
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30 #if (NGX_THREADS0)
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31 ev->light = 1;
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32 #endif
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33
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34 ngx_add_timer(ev, timer);
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36 return NGX_AGAIN;
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37 }
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39 m->lock = 1;
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40
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41 return NGX_OK;
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42 }
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45 ngx_int_t ngx_event_mutex_unlock(ngx_event_mutex_t *m, ngx_log_t *log)
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46 {
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47 ngx_event_t *ev;
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48
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49 if (m->lock == 0) {
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50 ngx_log_error(NGX_LOG_ALERT, log, 0,
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51 "tring to unlock the free event mutex %p", m);
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52 return NGX_ERROR;
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53 }
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55 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, log, 0,
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56 "unlock event mutex %p, next event: %p", m, m->events);
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58 m->lock = 0;
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60 if (m->events) {
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61 ev = m->events;
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62 m->events = ev->next;
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64 ev->next = (ngx_event_t *) ngx_posted_events;
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65 ngx_posted_events = ev;
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66 }
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68 return NGX_OK;
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69 }