Mercurial > hg > nginx

view src/event/ngx_event_posted.c @ 509:9b8c906f6e63 release-0.1.29

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.1.29-RELEASE import *) Feature: the ngx_http_ssi_module supports "include virtual" command. *) Feature: the ngx_http_ssi_module supports the condition command like 'if expr="$NAME"' and "else" and "endif" commands. Only one nested level is supported. *) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and DATE_GMT variables and "config timefmt" command. *) Feature: the "ssi_ignore_recycled_buffers" directive. *) Bugfix: the "echo" command did not show the default value for the empty QUERY_STRING variable. *) Change: the ngx_http_proxy_module was rewritten. *) Feature: the "proxy_redirect", "proxy_pass_request_headers", "proxy_pass_request_body", and "proxy_method" directives. *) Feature: the "proxy_set_header" directive. The "proxy_x_var" was canceled and must be replaced with the proxy_set_header directive. *) Change: the "proxy_preserve_host" is canceled and must be replaced with the "proxy_set_header Host $host" and the "proxy_redirect off" directives, the "proxy_set_header Host $host:$proxy_port" directive and the appropriate proxy_redirect directives. *) Change: the "proxy_set_x_real_ip" is canceled and must be replaced with the "proxy_set_header X-Real-IP $remote_addr" directive. *) Change: the "proxy_add_x_forwarded_for" is canceled and must be replaced with the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for" directive. *) Change: the "proxy_set_x_url" is canceled and must be replaced with the "proxy_set_header X-URL http://$host:$server_port$request_uri" directive. *) Feature: the "fastcgi_param" directive. *) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params" directive are canceled and must be replaced with the fastcgi_param directives. *) Feature: the "index" directive can use the variables. *) Feature: the "index" directive can be used at http and server levels. *) Change: the last index only in the "index" directive can be absolute. *) Feature: the "rewrite" directive can use the variables. *) Feature: the "internal" directive. *) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR, SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME, REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables. *) Change: nginx now passes the invalid lines in a client request headers or a backend response header. *) Bugfix: if the backend did not transfer response for a long time and the "send_timeout" was less than "proxy_read_timeout", then nginx returned the 408 response. *) Bugfix: the segmentation fault was occurred if the backend sent an invalid line in response header; the bug had appeared in 0.1.26. *) Bugfix: the segmentation fault may occurred in FastCGI fault tolerance configuration. *) Bugfix: the "expires" directive did not remove the previous "Expires" and "Cache-Control" headers. *) Bugfix: nginx did not take into account trailing dot in "Host" header line. *) Bugfix: the ngx_http_auth_module did not work under Linux. *) Bugfix: the rewrite directive worked incorrectly, if the arguments were in a request. *) Bugfix: nginx could not be built on MacOS X.
author Igor Sysoev <igor@sysoev.ru>
date Thu, 12 May 2005 14:58:06 +0000
parents d4ea69372b94
children 9c2f3ed7a247
line wrap: on
line source


/*
 * Copyright (C) Igor Sysoev
 */


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>


ngx_thread_volatile ngx_event_t  *ngx_posted_events;

#if (NGX_THREADS)
ngx_mutex_t                      *ngx_posted_events_mutex;
#endif


void ngx_event_process_posted(ngx_cycle_t *cycle)
{
    ngx_event_t  *ev;

    for ( ;; ) {

        ev = (ngx_event_t *) ngx_posted_events;

        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                      "posted event %p", ev);

        if (ev == NULL) {
            return;
        }

        ngx_delete_posted_event(ev);

        ev->handler(ev);
    }
}


#if (NGX_THREADS) && !(NGX_WIN32)

void ngx_wakeup_worker_thread(ngx_cycle_t *cycle)
{
    ngx_int_t     i;
#if 0
    ngx_uint_t    busy;
    ngx_event_t  *ev;

    busy = 1;

    if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
        return;
    }

    for (ev = (ngx_event_t *) ngx_posted_events; ev; ev = ev->next) {
        if (*(ev->lock) == 0) {
            busy = 0;
            break;
        }
    }

    ngx_mutex_unlock(ngx_posted_events_mutex);

    if (busy) {
        return;
    }
#endif

    for (i = 0; i < ngx_threads_n; i++) {
        if (ngx_threads[i].state == NGX_THREAD_FREE) {
            ngx_cond_signal(ngx_threads[i].cv);
            return;
        }
    }
}


ngx_int_t ngx_event_thread_process_posted(ngx_cycle_t *cycle)
{
    ngx_event_t  *ev;

    for ( ;; ) {

        ev = (ngx_event_t *) ngx_posted_events;

        for ( ;; ) {

            ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                          "posted event %p", ev);

            if (ev == NULL) {
                return NGX_OK;
            }

            if (ngx_trylock(ev->lock) == 0) {

                ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                               "posted event %p is busy", ev);

                ev = ev->next;
                continue;
            }

            if (ev->lock != ev->own_lock) {
                if (*(ev->own_lock)) {
                    ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
                             "the own lock of the posted event %p is busy", ev);
                    ngx_unlock(ev->lock);
                    ev = ev->next;
                    continue;
                }
                *(ev->own_lock) = 1;
            }

            ngx_delete_posted_event(ev);

            ev->locked = 1;

            ev->ready |= ev->posted_ready;
            ev->timedout |= ev->posted_timedout;
            ev->pending_eof |= ev->posted_eof;
#if (NGX_HAVE_KQUEUE)
            ev->kq_errno |= ev->posted_errno;
#endif
            if (ev->posted_available) {
                ev->available = ev->posted_available;
            }

            ev->posted_ready = 0;
            ev->posted_timedout = 0;
            ev->posted_eof = 0;
#if (NGX_HAVE_KQUEUE)
            ev->posted_errno = 0;
#endif
            ev->posted_available = 0;

            ngx_mutex_unlock(ngx_posted_events_mutex);

            ev->handler(ev);

            if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
                return NGX_ERROR;
            }

            if (ev->locked) {
                ngx_unlock(ev->lock);

                if (ev->lock != ev->own_lock) {
                    ngx_unlock(ev->own_lock);
                }
            }

            ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                           "posted event %p is done", ev);

            break;
        }
    }
}

#else

void ngx_wakeup_worker_thread(ngx_cycle_t *cycle)
{
}

#endif