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annotate src/event/ngx_event_posted.h @ 6059:c81d79a7befd

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SPDY: always push pending data. This helps to avoid suboptimal behavior when a client waits for a control frame or more data to increase window size, but the frames have been delayed in the socket buffer. The delays can be caused by bad interaction between Nagle's algorithm on nginx side and delayed ACK on the client side or by TCP_CORK/TCP_NOPUSH if SPDY was working without SSL and sendfile() was used. The pushing code is now very similar to ngx_http_set_keepalive().
author Valentin Bartenev <vbart@nginx.com>
date Mon, 23 Mar 2015 21:04:13 +0300
parents 3f5f0ab59b35
children 3d4730eada9c
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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3 * Copyright (C) Igor Sysoev
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d620f497c50f Copyright updated.
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_EVENT_POSTED_H_INCLUDED_
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9 #define _NGX_EVENT_POSTED_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_event.h>
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17 #define ngx_post_event(ev, q) \
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18 \
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19 if (!ev->posted) { \
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20 ev->posted = 1; \
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21 ngx_queue_insert_tail(q, &ev->queue); \
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22 \
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23 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, "post event %p", ev); \
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24 \
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25 } else { \
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26 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, \
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27 "update posted event %p", ev); \
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28 }
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31 #define ngx_delete_posted_event(ev) \
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32 \
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33 ev->posted = 0; \
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34 ngx_queue_remove(&ev->queue); \
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35 \
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36 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, \
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37 "delete posted event %p", ev);
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41 void ngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted);
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44 extern ngx_queue_t ngx_posted_accept_events;
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45 extern ngx_queue_t ngx_posted_events;
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48 #endif /* _NGX_EVENT_POSTED_H_INCLUDED_ */