Mercurial > hg > nginx-quic
annotate src/event/ngx_event_accept.c @ 4207:4fc91bae6f83
Better recheck of dead upstream servers.
Previously nginx used to mark backend again as live as soon as fail_timeout
passes (10s by default) since last failure. On the other hand, detecting
dead backend takes up to 60s (proxy_connect_timeout) in typical situation
"backend is down and doesn't respond to any packets". This resulted in
suboptimal behaviour in the above situation (up to 23% of requests were
directed to dead backend with default settings).
More detailed description of the problem may be found here (in Russian):
http://mailman.nginx.org/pipermail/nginx-ru/2011-August/042172.html
Fix is to only allow one request after fail_timeout passes, and
mark backend as "live" only if this request succeeds.
Note that with new code backend will not be marked "live" unless "check"
request is completed, and this may take a while in some specific workloads
(e.g. streaming). This is believed to be acceptable.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 12 Oct 2011 14:22:48 +0000 |
parents | c870fb78550c |
children | d620f497c50f |
rev | line source |
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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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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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11 |
573 | 12 static ngx_int_t ngx_enable_accept_events(ngx_cycle_t *cycle); |
13 static ngx_int_t ngx_disable_accept_events(ngx_cycle_t *cycle); | |
543 | 14 static void ngx_close_accepted_connection(ngx_connection_t *c); |
191
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15 |
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16 |
493 | 17 void |
18 ngx_event_accept(ngx_event_t *ev) | |
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19 { |
714 | 20 socklen_t socklen; |
483 | 21 ngx_err_t err; |
22 ngx_log_t *log; | |
23 ngx_socket_t s; | |
24 ngx_event_t *rev, *wev; | |
543 | 25 ngx_listening_t *ls; |
26 ngx_connection_t *c, *lc; | |
483 | 27 ngx_event_conf_t *ecf; |
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28 u_char sa[NGX_SOCKADDRLEN]; |
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29 #if (NGX_HAVE_ACCEPT4) |
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30 static ngx_uint_t use_accept4 = 1; |
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31 #endif |
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32 |
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33 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); |
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34 |
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35 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) { |
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36 ev->available = 1; |
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37 |
455 | 38 } else if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { |
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39 ev->available = ecf->multi_accept; |
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40 } |
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41 |
543 | 42 lc = ev->data; |
43 ls = lc->listening; | |
44 ev->ready = 0; | |
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45 |
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46 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
543 | 47 "accept on %V, ready: %d", &ls->addr_text, ev->available); |
57
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48 |
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49 do { |
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50 socklen = NGX_SOCKADDRLEN; |
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51 |
3786 | 52 #if (NGX_HAVE_ACCEPT4) |
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53 if (use_accept4) { |
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54 s = accept4(lc->fd, (struct sockaddr *) sa, &socklen, |
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55 SOCK_NONBLOCK); |
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56 } else { |
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57 s = accept(lc->fd, (struct sockaddr *) sa, &socklen); |
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58 } |
3786 | 59 #else |
714 | 60 s = accept(lc->fd, (struct sockaddr *) sa, &socklen); |
3786 | 61 #endif |
477 | 62 |
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63 if (s == -1) { |
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64 err = ngx_socket_errno; |
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65 |
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66 if (err == NGX_EAGAIN) { |
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67 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, |
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68 "accept() not ready"); |
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69 return; |
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70 } |
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71 |
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72 #if (NGX_HAVE_ACCEPT4) |
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73 ngx_log_error((ngx_uint_t) ((err == NGX_ECONNABORTED) ? |
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74 NGX_LOG_ERR : NGX_LOG_ALERT), |
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75 ev->log, err, |
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76 use_accept4 ? "accept4() failed" : "accept() failed"); |
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77 |
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78 if (use_accept4 && err == NGX_ENOSYS) { |
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79 use_accept4 = 0; |
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80 ngx_inherited_nonblocking = 0; |
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81 continue; |
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82 } |
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83 #else |
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84 ngx_log_error((ngx_uint_t) ((err == NGX_ECONNABORTED) ? |
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85 NGX_LOG_ERR : NGX_LOG_ALERT), |
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86 ev->log, err, "accept() failed"); |
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87 #endif |
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88 |
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89 if (err == NGX_ECONNABORTED) { |
455 | 90 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
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91 ev->available--; |
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92 } |
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93 |
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94 if (ev->available) { |
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95 continue; |
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96 } |
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97 } |
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98 |
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99 return; |
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100 } |
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101 |
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102 #if (NGX_STAT_STUB) |
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103 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); |
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104 #endif |
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105 |
2255 | 106 ngx_accept_disabled = ngx_cycle->connection_n / 8 |
543 | 107 - ngx_cycle->free_connection_n; |
108 | |
109 c = ngx_get_connection(s, ev->log); | |
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110 |
543 | 111 if (c == NULL) { |
112 if (ngx_close_socket(s) == -1) { | |
113 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno, | |
114 ngx_close_socket_n " failed"); | |
115 } | |
119
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116 |
543 | 117 return; |
118 } | |
119 | |
635 | 120 #if (NGX_STAT_STUB) |
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121 (void) ngx_atomic_fetch_add(ngx_stat_active, 1); |
635 | 122 #endif |
123 | |
543 | 124 c->pool = ngx_create_pool(ls->pool_size, ev->log); |
125 if (c->pool == NULL) { | |
126 ngx_close_accepted_connection(c); | |
127 return; | |
128 } | |
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129 |
714 | 130 c->sockaddr = ngx_palloc(c->pool, socklen); |
543 | 131 if (c->sockaddr == NULL) { |
132 ngx_close_accepted_connection(c); | |
133 return; | |
134 } | |
135 | |
714 | 136 ngx_memcpy(c->sockaddr, sa, socklen); |
543 | 137 |
138 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); | |
139 if (log == NULL) { | |
140 ngx_close_accepted_connection(c); | |
87
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141 return; |
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142 } |
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143 |
487 | 144 /* set a blocking mode for aio and non-blocking mode for others */ |
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145 |
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146 if (ngx_inherited_nonblocking) { |
543 | 147 if (ngx_event_flags & NGX_USE_AIO_EVENT) { |
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148 if (ngx_blocking(s) == -1) { |
543 | 149 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno, |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
150 ngx_blocking_n " failed"); |
543 | 151 ngx_close_accepted_connection(c); |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
152 return; |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
153 } |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
154 } |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
155 |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
156 } else { |
346
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
323
diff
changeset
|
157 if (!(ngx_event_flags & (NGX_USE_AIO_EVENT|NGX_USE_RTSIG_EVENT))) { |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
158 if (ngx_nonblocking(s) == -1) { |
543 | 159 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno, |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
160 ngx_nonblocking_n " failed"); |
543 | 161 ngx_close_accepted_connection(c); |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
162 return; |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
163 } |
59
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
164 } |
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
165 } |
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
166 |
543 | 167 *log = ls->log; |
168 | |
169 c->recv = ngx_recv; | |
170 c->send = ngx_send; | |
577 | 171 c->recv_chain = ngx_recv_chain; |
543 | 172 c->send_chain = ngx_send_chain; |
103
6dfda4cf5200
nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
100
diff
changeset
|
173 |
543 | 174 c->log = log; |
175 c->pool->log = log; | |
103
6dfda4cf5200
nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
100
diff
changeset
|
176 |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
177 c->socklen = socklen; |
543 | 178 c->listening = ls; |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
179 c->local_sockaddr = ls->sockaddr; |
543 | 180 |
181 c->unexpected_eof = 1; | |
182 | |
3230
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
183 #if (NGX_HAVE_UNIX_DOMAIN) |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
184 if (c->sockaddr->sa_family == AF_UNIX) { |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
185 c->tcp_nopush = NGX_TCP_NOPUSH_DISABLED; |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
186 c->tcp_nodelay = NGX_TCP_NODELAY_DISABLED; |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
187 #if (NGX_SOLARIS) |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
188 /* Solaris's sendfilev() supports AF_NCA, AF_INET, and AF_INET6 */ |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
189 c->sendfile = 0; |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
190 #endif |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
191 } |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
192 #endif |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
193 |
561 | 194 rev = c->read; |
195 wev = c->write; | |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
196 |
164
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
121
diff
changeset
|
197 wev->ready = 1; |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
198 |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
380
diff
changeset
|
199 if (ngx_event_flags & (NGX_USE_AIO_EVENT|NGX_USE_RTSIG_EVENT)) { |
493 | 200 /* rtsig, aio, iocp */ |
164
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
121
diff
changeset
|
201 rev->ready = 1; |
59
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
202 } |
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
203 |
245
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
204 if (ev->deferred_accept) { |
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
205 rev->ready = 1; |
523 | 206 #if (NGX_HAVE_KQUEUE) |
207 rev->available = 1; | |
208 #endif | |
245
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
209 } |
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
210 |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
211 rev->log = log; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
212 wev->log = log; |
57
a499e0d1f16e
nginx-0.0.1-2003-01-30-10:28:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
44
diff
changeset
|
213 |
208
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
214 /* |
561 | 215 * TODO: MT: - ngx_atomic_fetch_add() |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
260
diff
changeset
|
216 * or protection by critical section or light mutex |
208
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
217 * |
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
218 * TODO: MP: - allocated in a shared memory |
561 | 219 * - ngx_atomic_fetch_add() |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
260
diff
changeset
|
220 * or protection by critical section or light mutex |
208
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
221 */ |
212
679f60139863
nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
222 |
561 | 223 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
26
53cb81681040
nginx-0.0.1-2002-12-15-09:25:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
24
diff
changeset
|
224 |
495 | 225 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
Igor Sysoev <igor@sysoev.ru>
parents:
2723
diff
changeset
|
226 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
495 | 227 #endif |
228 | |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
350
diff
changeset
|
229 #if (NGX_THREADS) |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
350
diff
changeset
|
230 rev->lock = &c->lock; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
350
diff
changeset
|
231 wev->lock = &c->lock; |
380
5ce6561246a5
nginx-0.0.7-2004-07-07-10:15:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
232 rev->own_lock = &c->lock; |
5ce6561246a5
nginx-0.0.7-2004-07-07-10:15:04 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
233 wev->own_lock = &c->lock; |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
350
diff
changeset
|
234 #endif |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
350
diff
changeset
|
235 |
543 | 236 if (ls->addr_ntop) { |
2049 | 237 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
238 if (c->addr_text.data == NULL) { |
543 | 239 ngx_close_accepted_connection(c); |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
240 return; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
241 } |
577 | 242 |
2198
5975975eedc0
ngx_sock_ntop() takes family from sockaddr, remove duplicate field
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
243 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->addr_text.data, |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
244 ls->addr_text_max_len, 0); |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
245 if (c->addr_text.len == 0) { |
543 | 246 ngx_close_accepted_connection(c); |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
247 return; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
248 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
249 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
250 |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
251 #if (NGX_DEBUG) |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
252 { |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
253 |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
254 in_addr_t i; |
665 | 255 ngx_event_debug_t *dc; |
479 | 256 struct sockaddr_in *sin; |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
257 |
479 | 258 sin = (struct sockaddr_in *) sa; |
665 | 259 dc = ecf->debug_connection.elts; |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
260 for (i = 0; i < ecf->debug_connection.nelts; i++) { |
665 | 261 if ((sin->sin_addr.s_addr & dc[i].mask) == dc[i].addr) { |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
262 log->log_level = NGX_LOG_DEBUG_CONNECTION|NGX_LOG_DEBUG_ALL; |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
263 break; |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
264 } |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
265 } |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
266 |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
267 } |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
268 #endif |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
269 |
665 | 270 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, log, 0, |
271 "*%d accept: %V fd:%d", c->number, &c->addr_text, s); | |
272 | |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
380
diff
changeset
|
273 if (ngx_add_conn && (ngx_event_flags & NGX_USE_EPOLL_EVENT) == 0) { |
97
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
274 if (ngx_add_conn(c) == NGX_ERROR) { |
543 | 275 ngx_close_accepted_connection(c); |
87
5f6d848dcbef
nginx-0.0.1-2003-05-13-20:02:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
86
diff
changeset
|
276 return; |
64
34d647deb1da
nginx-0.0.1-2003-03-04-09:33:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
277 } |
34d647deb1da
nginx-0.0.1-2003-03-04-09:33:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
278 } |
34d647deb1da
nginx-0.0.1-2003-03-04-09:33:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
279 |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
280 log->data = NULL; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
281 log->handler = NULL; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
282 |
543 | 283 ls->handler(c); |
57
a499e0d1f16e
nginx-0.0.1-2003-01-30-10:28:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
44
diff
changeset
|
284 |
455 | 285 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
286 ev->available--; |
57
a499e0d1f16e
nginx-0.0.1-2003-01-30-10:28:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
44
diff
changeset
|
287 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
288 |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
289 } while (ev->available); |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
290 } |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
291 |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
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parents:
164
diff
changeset
|
292 |
493 | 293 ngx_int_t |
294 ngx_trylock_accept_mutex(ngx_cycle_t *cycle) | |
301
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parents:
290
diff
changeset
|
295 { |
611 | 296 if (ngx_shmtx_trylock(&ngx_accept_mutex)) { |
297 | |
301
744965ec6275
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298 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, |
744965ec6275
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299 "accept mutex locked"); |
744965ec6275
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parents:
290
diff
changeset
|
300 |
719
f30b1a75fd3b
Solaris 10 event ports support
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parents:
714
diff
changeset
|
301 if (ngx_accept_mutex_held |
f30b1a75fd3b
Solaris 10 event ports support
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714
diff
changeset
|
302 && ngx_accept_events == 0 |
f30b1a75fd3b
Solaris 10 event ports support
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parents:
714
diff
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303 && !(ngx_event_flags & NGX_USE_RTSIG_EVENT)) |
f30b1a75fd3b
Solaris 10 event ports support
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parents:
714
diff
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|
304 { |
573 | 305 return NGX_OK; |
306 } | |
301
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290
diff
changeset
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307 |
573 | 308 if (ngx_enable_accept_events(cycle) == NGX_ERROR) { |
611 | 309 ngx_shmtx_unlock(&ngx_accept_mutex); |
573 | 310 return NGX_ERROR; |
301
744965ec6275
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parents:
290
diff
changeset
|
311 } |
744965ec6275
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parents:
290
diff
changeset
|
312 |
719
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Solaris 10 event ports support
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diff
changeset
|
313 ngx_accept_events = 0; |
573 | 314 ngx_accept_mutex_held = 1; |
315 | |
301
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316 return NGX_OK; |
744965ec6275
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parents:
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diff
changeset
|
317 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
318 |
719
f30b1a75fd3b
Solaris 10 event ports support
Igor Sysoev <igor@sysoev.ru>
parents:
714
diff
changeset
|
319 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, |
f30b1a75fd3b
Solaris 10 event ports support
Igor Sysoev <igor@sysoev.ru>
parents:
714
diff
changeset
|
320 "accept mutex lock failed: %ui", ngx_accept_mutex_held); |
f30b1a75fd3b
Solaris 10 event ports support
Igor Sysoev <igor@sysoev.ru>
parents:
714
diff
changeset
|
321 |
302
1526e7686b20
nginx-0.0.3-2004-04-01-10:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
301
diff
changeset
|
322 if (ngx_accept_mutex_held) { |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
323 if (ngx_disable_accept_events(cycle) == NGX_ERROR) { |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
290
diff
changeset
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324 return NGX_ERROR; |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
290
diff
changeset
|
325 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
326 |
302
1526e7686b20
nginx-0.0.3-2004-04-01-10:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
301
diff
changeset
|
327 ngx_accept_mutex_held = 0; |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
290
diff
changeset
|
328 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
290
diff
changeset
|
329 |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
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changeset
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330 return NGX_OK; |
744965ec6275
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parents:
290
diff
changeset
|
331 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
290
diff
changeset
|
332 |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
290
diff
changeset
|
333 |
573 | 334 static ngx_int_t |
493 | 335 ngx_enable_accept_events(ngx_cycle_t *cycle) |
301
744965ec6275
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parents:
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diff
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|
336 { |
543 | 337 ngx_uint_t i; |
338 ngx_listening_t *ls; | |
339 ngx_connection_t *c; | |
301
744965ec6275
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parents:
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diff
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|
340 |
543 | 341 ls = cycle->listening.elts; |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
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diff
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342 for (i = 0; i < cycle->listening.nelts; i++) { |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
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diff
changeset
|
343 |
543 | 344 c = ls[i].connection; |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
345 |
346
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
323
diff
changeset
|
346 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) { |
573 | 347 |
543 | 348 if (ngx_add_conn(c) == NGX_ERROR) { |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
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parents:
290
diff
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349 return NGX_ERROR; |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
350 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
351 |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
352 } else { |
543 | 353 if (ngx_add_event(c->read, NGX_READ_EVENT, 0) == NGX_ERROR) { |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
354 return NGX_ERROR; |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
355 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
356 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
357 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
358 |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
359 return NGX_OK; |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
360 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
361 |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
362 |
573 | 363 static ngx_int_t |
493 | 364 ngx_disable_accept_events(ngx_cycle_t *cycle) |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
365 { |
543 | 366 ngx_uint_t i; |
367 ngx_listening_t *ls; | |
368 ngx_connection_t *c; | |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
369 |
543 | 370 ls = cycle->listening.elts; |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
371 for (i = 0; i < cycle->listening.nelts; i++) { |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
372 |
543 | 373 c = ls[i].connection; |
374 | |
375 if (!c->read->active) { | |
376 continue; | |
377 } | |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
378 |
346
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
323
diff
changeset
|
379 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) { |
543 | 380 if (ngx_del_conn(c, NGX_DISABLE_EVENT) == NGX_ERROR) { |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
381 return NGX_ERROR; |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
382 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
383 |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
384 } else { |
543 | 385 if (ngx_del_event(c->read, NGX_READ_EVENT, NGX_DISABLE_EVENT) |
386 == NGX_ERROR) | |
301
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
387 { |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
388 return NGX_ERROR; |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
389 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
390 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
391 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
392 |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
393 return NGX_OK; |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
394 } |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
395 |
744965ec6275
nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
290
diff
changeset
|
396 |
493 | 397 static void |
543 | 398 ngx_close_accepted_connection(ngx_connection_t *c) |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
399 { |
543 | 400 ngx_socket_t fd; |
401 | |
402 ngx_free_connection(c); | |
403 | |
404 fd = c->fd; | |
405 c->fd = (ngx_socket_t) -1; | |
406 | |
407 if (ngx_close_socket(fd) == -1) { | |
408 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno, | |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
409 ngx_close_socket_n " failed"); |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
410 } |
495 | 411 |
543 | 412 if (c->pool) { |
413 ngx_destroy_pool(c->pool); | |
414 } | |
415 | |
495 | 416 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
Igor Sysoev <igor@sysoev.ru>
parents:
2723
diff
changeset
|
417 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
495 | 418 #endif |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
419 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
420 |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
421 |
543 | 422 u_char * |
493 | 423 ngx_accept_log_error(ngx_log_t *log, u_char *buf, size_t len) |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
424 { |
543 | 425 return ngx_snprintf(buf, len, " while accepting new connection on %V", |
426 log->data); | |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
427 } |