Mercurial > hg > nginx-quic
annotate src/event/ngx_event_accept.c @ 6454:f61472978419
Core: use ngx_palloc_small() to allocate ngx_pool_large_t.
This structure cannot be allocated as a large block anyway, otherwise that will
result in infinite recursion, since each large allocation requires to allocate
another ngx_pool_large_t.
The room for the structure is guaranteed by the NGX_MIN_POOL_SIZE constant.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Wed, 23 Mar 2016 17:44:04 +0300 |
parents | 8f038068f4bc |
children | 2f98b5709d79 |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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12 |
573 | 13 static ngx_int_t ngx_enable_accept_events(ngx_cycle_t *cycle); |
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14 static ngx_int_t ngx_disable_accept_events(ngx_cycle_t *cycle, ngx_uint_t all); |
543 | 15 static void ngx_close_accepted_connection(ngx_connection_t *c); |
6436 | 16 #if (NGX_DEBUG) |
17 static void ngx_debug_accepted_connection(ngx_event_conf_t *ecf, | |
18 ngx_connection_t *c); | |
19 #endif | |
191
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20 |
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21 |
493 | 22 void |
23 ngx_event_accept(ngx_event_t *ev) | |
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24 { |
714 | 25 socklen_t socklen; |
483 | 26 ngx_err_t err; |
27 ngx_log_t *log; | |
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28 ngx_uint_t level; |
483 | 29 ngx_socket_t s; |
30 ngx_event_t *rev, *wev; | |
543 | 31 ngx_listening_t *ls; |
32 ngx_connection_t *c, *lc; | |
483 | 33 ngx_event_conf_t *ecf; |
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34 u_char sa[NGX_SOCKADDRLEN]; |
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35 #if (NGX_HAVE_ACCEPT4) |
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36 static ngx_uint_t use_accept4 = 1; |
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37 #endif |
26
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38 |
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39 if (ev->timedout) { |
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40 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { |
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41 return; |
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42 } |
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43 |
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44 ev->timedout = 0; |
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45 } |
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46 |
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47 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); |
97
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48 |
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49 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { |
248
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50 ev->available = ecf->multi_accept; |
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51 } |
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52 |
543 | 53 lc = ev->data; |
54 ls = lc->listening; | |
55 ev->ready = 0; | |
57
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56 |
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57 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
543 | 58 "accept on %V, ready: %d", &ls->addr_text, ev->available); |
57
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59 |
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60 do { |
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61 socklen = NGX_SOCKADDRLEN; |
191
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62 |
3786 | 63 #if (NGX_HAVE_ACCEPT4) |
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64 if (use_accept4) { |
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65 s = accept4(lc->fd, (struct sockaddr *) sa, &socklen, |
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66 SOCK_NONBLOCK); |
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67 } else { |
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68 s = accept(lc->fd, (struct sockaddr *) sa, &socklen); |
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69 } |
3786 | 70 #else |
714 | 71 s = accept(lc->fd, (struct sockaddr *) sa, &socklen); |
3786 | 72 #endif |
477 | 73 |
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74 if (s == (ngx_socket_t) -1) { |
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75 err = ngx_socket_errno; |
57
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76 |
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77 if (err == NGX_EAGAIN) { |
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78 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, |
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79 "accept() not ready"); |
87
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80 return; |
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81 } |
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82 |
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83 level = NGX_LOG_ALERT; |
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84 |
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85 if (err == NGX_ECONNABORTED) { |
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86 level = NGX_LOG_ERR; |
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87 |
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88 } else if (err == NGX_EMFILE || err == NGX_ENFILE) { |
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89 level = NGX_LOG_CRIT; |
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90 } |
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91 |
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92 #if (NGX_HAVE_ACCEPT4) |
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93 ngx_log_error(level, ev->log, err, |
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94 use_accept4 ? "accept4() failed" : "accept() failed"); |
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95 |
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96 if (use_accept4 && err == NGX_ENOSYS) { |
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97 use_accept4 = 0; |
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98 ngx_inherited_nonblocking = 0; |
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99 continue; |
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100 } |
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101 #else |
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102 ngx_log_error(level, ev->log, err, "accept() failed"); |
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103 #endif |
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104 |
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105 if (err == NGX_ECONNABORTED) { |
455 | 106 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
248
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107 ev->available--; |
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108 } |
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109 |
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110 if (ev->available) { |
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111 continue; |
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112 } |
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113 } |
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114 |
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115 if (err == NGX_EMFILE || err == NGX_ENFILE) { |
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116 if (ngx_disable_accept_events((ngx_cycle_t *) ngx_cycle, 1) |
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117 != NGX_OK) |
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118 { |
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119 return; |
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120 } |
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121 |
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122 if (ngx_use_accept_mutex) { |
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123 if (ngx_accept_mutex_held) { |
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124 ngx_shmtx_unlock(&ngx_accept_mutex); |
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125 ngx_accept_mutex_held = 0; |
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126 } |
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127 |
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128 ngx_accept_disabled = 1; |
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Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
129 |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
130 } else { |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
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parents:
4613
diff
changeset
|
131 ngx_add_timer(ev, ecf->accept_mutex_delay); |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
132 } |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
133 } |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
134 |
97
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
135 return; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
136 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
137 |
426
3f88935a02e8
nginx-0.0.10-2004-09-14-23:39:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
425
diff
changeset
|
138 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
Igor Sysoev <igor@sysoev.ru>
parents:
2723
diff
changeset
|
139 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); |
426
3f88935a02e8
nginx-0.0.10-2004-09-14-23:39:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
425
diff
changeset
|
140 #endif |
323
ba876b26b76d
nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
315
diff
changeset
|
141 |
2255 | 142 ngx_accept_disabled = ngx_cycle->connection_n / 8 |
543 | 143 - ngx_cycle->free_connection_n; |
144 | |
145 c = ngx_get_connection(s, ev->log); | |
323
ba876b26b76d
nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
315
diff
changeset
|
146 |
543 | 147 if (c == NULL) { |
148 if (ngx_close_socket(s) == -1) { | |
149 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno, | |
150 ngx_close_socket_n " failed"); | |
151 } | |
119
cd54bcbaf3b5
nginx-0.0.1-2003-07-21-01:15:59 import
Igor Sysoev <igor@sysoev.ru>
parents:
117
diff
changeset
|
152 |
543 | 153 return; |
154 } | |
155 | |
6436 | 156 c->type = SOCK_STREAM; |
157 | |
635 | 158 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
Igor Sysoev <igor@sysoev.ru>
parents:
2723
diff
changeset
|
159 (void) ngx_atomic_fetch_add(ngx_stat_active, 1); |
635 | 160 #endif |
161 | |
543 | 162 c->pool = ngx_create_pool(ls->pool_size, ev->log); |
163 if (c->pool == NULL) { | |
164 ngx_close_accepted_connection(c); | |
165 return; | |
166 } | |
97
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
167 |
714 | 168 c->sockaddr = ngx_palloc(c->pool, socklen); |
543 | 169 if (c->sockaddr == NULL) { |
170 ngx_close_accepted_connection(c); | |
171 return; | |
172 } | |
173 | |
714 | 174 ngx_memcpy(c->sockaddr, sa, socklen); |
543 | 175 |
176 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); | |
177 if (log == NULL) { | |
178 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
|
179 return; |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
180 } |
6
669801705ab1
nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
181 |
6125
4dc8e7b62216
Removed the obsolete aio module.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
182 /* set a blocking mode for iocp and non-blocking mode for others */ |
59
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
183 |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
184 if (ngx_inherited_nonblocking) { |
6125
4dc8e7b62216
Removed the obsolete aio module.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
185 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
186 if (ngx_blocking(s) == -1) { |
543 | 187 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
|
188 ngx_blocking_n " failed"); |
543 | 189 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
|
190 return; |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
191 } |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
192 } |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
193 |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
194 } else { |
6126
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
195 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) { |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
196 if (ngx_nonblocking(s) == -1) { |
543 | 197 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
|
198 ngx_nonblocking_n " failed"); |
543 | 199 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
|
200 return; |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
201 } |
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 } |
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
204 |
543 | 205 *log = ls->log; |
206 | |
207 c->recv = ngx_recv; | |
208 c->send = ngx_send; | |
577 | 209 c->recv_chain = ngx_recv_chain; |
543 | 210 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
|
211 |
543 | 212 c->log = log; |
213 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
|
214 |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
215 c->socklen = socklen; |
543 | 216 c->listening = ls; |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
217 c->local_sockaddr = ls->sockaddr; |
5463
1ab1cf63f885
Core: keep the length of the local sockaddr.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
218 c->local_socklen = ls->socklen; |
543 | 219 |
220 c->unexpected_eof = 1; | |
221 | |
3230
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
222 #if (NGX_HAVE_UNIX_DOMAIN) |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
223 if (c->sockaddr->sa_family == AF_UNIX) { |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
224 c->tcp_nopush = NGX_TCP_NOPUSH_DISABLED; |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
225 c->tcp_nodelay = NGX_TCP_NODELAY_DISABLED; |
a7491af45540
http listen unix domain sockets
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parents:
2951
diff
changeset
|
226 #if (NGX_SOLARIS) |
a7491af45540
http listen unix domain sockets
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parents:
2951
diff
changeset
|
227 /* 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
|
228 c->sendfile = 0; |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
229 #endif |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
230 } |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
231 #endif |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
232 |
561 | 233 rev = c->read; |
234 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
|
235 |
164
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
121
diff
changeset
|
236 wev->ready = 1; |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
237 |
6126
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
238 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
164
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
121
diff
changeset
|
239 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
|
240 } |
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
241 |
245
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
242 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
|
243 rev->ready = 1; |
523 | 244 #if (NGX_HAVE_KQUEUE) |
245 rev->available = 1; | |
246 #endif | |
245
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
247 } |
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
248 |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
249 rev->log = log; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
250 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
|
251 |
208
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
252 /* |
561 | 253 * 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
|
254 * 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
|
255 * |
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
256 * TODO: MP: - allocated in a shared memory |
561 | 257 * - 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
|
258 * 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
|
259 */ |
212
679f60139863
nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
260 |
561 | 261 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
|
262 |
495 | 263 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
Igor Sysoev <igor@sysoev.ru>
parents:
2723
diff
changeset
|
264 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
495 | 265 #endif |
266 | |
543 | 267 if (ls->addr_ntop) { |
2049 | 268 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
|
269 if (c->addr_text.data == NULL) { |
543 | 270 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
|
271 return; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
272 } |
577 | 273 |
5263
05ba5bce31e0
Core: extended ngx_sock_ntop() with socklen parameter.
Vladimir Homutov <vl@nginx.com>
parents:
4618
diff
changeset
|
274 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
05ba5bce31e0
Core: extended ngx_sock_ntop() with socklen parameter.
Vladimir Homutov <vl@nginx.com>
parents:
4618
diff
changeset
|
275 c->addr_text.data, |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
276 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
|
277 if (c->addr_text.len == 0) { |
543 | 278 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
|
279 return; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
280 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
281 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
282 |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
283 #if (NGX_DEBUG) |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
284 { |
6436 | 285 ngx_str_t addr; |
286 u_char text[NGX_SOCKADDR_STRLEN]; | |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
287 |
6436 | 288 ngx_debug_accepted_connection(ecf, c); |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
289 |
5704
524741fd50ed
Core: output client port number when logging accept event.
Ruslan Ermilov <ru@nginx.com>
parents:
5600
diff
changeset
|
290 if (log->log_level & NGX_LOG_DEBUG_EVENT) { |
524741fd50ed
Core: output client port number when logging accept event.
Ruslan Ermilov <ru@nginx.com>
parents:
5600
diff
changeset
|
291 addr.data = text; |
524741fd50ed
Core: output client port number when logging accept event.
Ruslan Ermilov <ru@nginx.com>
parents:
5600
diff
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|
292 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, |
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293 NGX_SOCKADDR_STRLEN, 1); |
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294 |
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295 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, log, 0, |
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296 "*%uA accept: %V fd:%d", c->number, &addr, s); |
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297 } |
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298 |
307
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299 } |
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300 #endif |
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301 |
381
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302 if (ngx_add_conn && (ngx_event_flags & NGX_USE_EPOLL_EVENT) == 0) { |
97
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303 if (ngx_add_conn(c) == NGX_ERROR) { |
543 | 304 ngx_close_accepted_connection(c); |
87
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305 return; |
64
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306 } |
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307 } |
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308 |
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309 log->data = NULL; |
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310 log->handler = NULL; |
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311 |
543 | 312 ls->handler(c); |
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313 |
455 | 314 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
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315 ev->available--; |
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316 } |
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318 } while (ev->available); |
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319 } |
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321 |
6436 | 322 #if !(NGX_WIN32) |
323 | |
324 void | |
325 ngx_event_recvmsg(ngx_event_t *ev) | |
326 { | |
327 ssize_t n; | |
328 ngx_log_t *log; | |
329 ngx_err_t err; | |
330 ngx_event_t *rev, *wev; | |
331 struct iovec iov[1]; | |
332 struct msghdr msg; | |
333 ngx_listening_t *ls; | |
334 ngx_event_conf_t *ecf; | |
335 ngx_connection_t *c, *lc; | |
336 u_char sa[NGX_SOCKADDRLEN]; | |
337 static u_char buffer[65535]; | |
338 | |
339 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) | |
340 | |
341 #if (NGX_HAVE_IP_RECVDSTADDR) | |
342 u_char msg_control[CMSG_SPACE(sizeof(struct in_addr))]; | |
343 #elif (NGX_HAVE_IP_PKTINFO) | |
344 u_char msg_control[CMSG_SPACE(sizeof(struct in_pktinfo))]; | |
345 #endif | |
346 | |
347 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) | |
348 u_char msg_control6[CMSG_SPACE(sizeof(struct in6_pktinfo))]; | |
349 #endif | |
350 | |
351 #endif | |
352 | |
353 if (ev->timedout) { | |
354 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { | |
355 return; | |
356 } | |
357 | |
358 ev->timedout = 0; | |
359 } | |
360 | |
361 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); | |
362 | |
363 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { | |
364 ev->available = ecf->multi_accept; | |
365 } | |
366 | |
367 lc = ev->data; | |
368 ls = lc->listening; | |
369 ev->ready = 0; | |
370 | |
371 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, | |
372 "recvmsg on %V, ready: %d", &ls->addr_text, ev->available); | |
373 | |
374 do { | |
375 ngx_memzero(&msg, sizeof(struct msghdr)); | |
376 | |
377 iov[0].iov_base = (void *) buffer; | |
378 iov[0].iov_len = sizeof(buffer); | |
379 | |
380 msg.msg_name = &sa; | |
381 msg.msg_namelen = sizeof(sa); | |
382 msg.msg_iov = iov; | |
383 msg.msg_iovlen = 1; | |
384 | |
385 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) | |
386 | |
387 if (ls->wildcard) { | |
388 | |
389 #if (NGX_HAVE_IP_RECVDSTADDR || NGX_HAVE_IP_PKTINFO) | |
390 if (ls->sockaddr->sa_family == AF_INET) { | |
391 msg.msg_control = &msg_control; | |
392 msg.msg_controllen = sizeof(msg_control); | |
393 } | |
394 #endif | |
395 | |
396 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) | |
397 if (ls->sockaddr->sa_family == AF_INET6) { | |
398 msg.msg_control = &msg_control6; | |
399 msg.msg_controllen = sizeof(msg_control6); | |
400 } | |
401 #endif | |
402 } | |
403 | |
404 #endif | |
405 | |
406 n = recvmsg(lc->fd, &msg, 0); | |
407 | |
408 if (n == -1) { | |
409 err = ngx_socket_errno; | |
410 | |
411 if (err == NGX_EAGAIN) { | |
412 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, | |
413 "recvmsg() not ready"); | |
414 return; | |
415 } | |
416 | |
417 ngx_log_error(NGX_LOG_ALERT, ev->log, err, "recvmsg() failed"); | |
418 | |
419 return; | |
420 } | |
421 | |
422 #if (NGX_STAT_STUB) | |
423 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); | |
424 #endif | |
425 | |
426 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) | |
427 if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) { | |
428 ngx_log_error(NGX_LOG_ALERT, ev->log, 0, | |
429 "recvmsg() truncated data"); | |
430 continue; | |
431 } | |
432 #endif | |
433 | |
434 ngx_accept_disabled = ngx_cycle->connection_n / 8 | |
435 - ngx_cycle->free_connection_n; | |
436 | |
437 c = ngx_get_connection(lc->fd, ev->log); | |
438 if (c == NULL) { | |
439 return; | |
440 } | |
441 | |
442 c->shared = 1; | |
443 c->type = SOCK_DGRAM; | |
444 c->socklen = msg.msg_namelen; | |
445 | |
446 #if (NGX_STAT_STUB) | |
447 (void) ngx_atomic_fetch_add(ngx_stat_active, 1); | |
448 #endif | |
449 | |
450 c->pool = ngx_create_pool(ls->pool_size, ev->log); | |
451 if (c->pool == NULL) { | |
452 ngx_close_accepted_connection(c); | |
453 return; | |
454 } | |
455 | |
456 c->sockaddr = ngx_palloc(c->pool, c->socklen); | |
457 if (c->sockaddr == NULL) { | |
458 ngx_close_accepted_connection(c); | |
459 return; | |
460 } | |
461 | |
462 ngx_memcpy(c->sockaddr, msg.msg_name, c->socklen); | |
463 | |
464 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); | |
465 if (log == NULL) { | |
466 ngx_close_accepted_connection(c); | |
467 return; | |
468 } | |
469 | |
470 *log = ls->log; | |
471 | |
472 c->send = ngx_udp_send; | |
473 | |
474 c->log = log; | |
475 c->pool->log = log; | |
476 | |
477 c->listening = ls; | |
478 c->local_sockaddr = ls->sockaddr; | |
479 c->local_socklen = ls->socklen; | |
480 | |
481 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) | |
482 | |
483 if (ls->wildcard) { | |
484 struct cmsghdr *cmsg; | |
485 struct sockaddr *sockaddr; | |
486 | |
487 sockaddr = ngx_palloc(c->pool, c->local_socklen); | |
488 if (sockaddr == NULL) { | |
489 ngx_close_accepted_connection(c); | |
490 return; | |
491 } | |
492 | |
493 ngx_memcpy(sockaddr, c->local_sockaddr, c->local_socklen); | |
494 c->local_sockaddr = sockaddr; | |
495 | |
496 for (cmsg = CMSG_FIRSTHDR(&msg); | |
497 cmsg != NULL; | |
498 cmsg = CMSG_NXTHDR(&msg, cmsg)) | |
499 { | |
500 | |
501 #if (NGX_HAVE_IP_RECVDSTADDR) | |
502 | |
503 if (cmsg->cmsg_level == IPPROTO_IP | |
504 && cmsg->cmsg_type == IP_RECVDSTADDR | |
505 && sockaddr->sa_family == AF_INET) | |
506 { | |
507 struct in_addr *addr; | |
508 struct sockaddr_in *sin; | |
509 | |
510 addr = (struct in_addr *) CMSG_DATA(cmsg); | |
511 sin = (struct sockaddr_in *) sockaddr; | |
512 sin->sin_addr = *addr; | |
513 | |
514 break; | |
515 } | |
516 | |
517 #elif (NGX_HAVE_IP_PKTINFO) | |
518 | |
519 if (cmsg->cmsg_level == IPPROTO_IP | |
520 && cmsg->cmsg_type == IP_PKTINFO | |
521 && sockaddr->sa_family == AF_INET) | |
522 { | |
523 struct in_pktinfo *pkt; | |
524 struct sockaddr_in *sin; | |
525 | |
526 pkt = (struct in_pktinfo *) CMSG_DATA(cmsg); | |
527 sin = (struct sockaddr_in *) sockaddr; | |
528 sin->sin_addr = pkt->ipi_addr; | |
529 | |
530 break; | |
531 } | |
532 | |
533 #endif | |
534 | |
535 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) | |
536 | |
537 if (cmsg->cmsg_level == IPPROTO_IPV6 | |
538 && cmsg->cmsg_type == IPV6_PKTINFO | |
539 && sockaddr->sa_family == AF_INET6) | |
540 { | |
541 struct in6_pktinfo *pkt6; | |
542 struct sockaddr_in6 *sin6; | |
543 | |
544 pkt6 = (struct in6_pktinfo *) CMSG_DATA(cmsg); | |
545 sin6 = (struct sockaddr_in6 *) sockaddr; | |
546 sin6->sin6_addr = pkt6->ipi6_addr; | |
547 | |
548 break; | |
549 } | |
550 | |
551 #endif | |
552 | |
553 } | |
554 } | |
555 | |
556 #endif | |
557 | |
558 c->buffer = ngx_create_temp_buf(c->pool, n); | |
559 if (c->buffer == NULL) { | |
560 ngx_close_accepted_connection(c); | |
561 return; | |
562 } | |
563 | |
564 c->buffer->last = ngx_cpymem(c->buffer->last, buffer, n); | |
565 | |
566 rev = c->read; | |
567 wev = c->write; | |
568 | |
569 wev->ready = 1; | |
570 | |
571 rev->log = log; | |
572 wev->log = log; | |
573 | |
574 /* | |
575 * TODO: MT: - ngx_atomic_fetch_add() | |
576 * or protection by critical section or light mutex | |
577 * | |
578 * TODO: MP: - allocated in a shared memory | |
579 * - ngx_atomic_fetch_add() | |
580 * or protection by critical section or light mutex | |
581 */ | |
582 | |
583 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
584 | |
585 #if (NGX_STAT_STUB) | |
586 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); | |
587 #endif | |
588 | |
589 if (ls->addr_ntop) { | |
590 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); | |
591 if (c->addr_text.data == NULL) { | |
592 ngx_close_accepted_connection(c); | |
593 return; | |
594 } | |
595 | |
596 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, | |
597 c->addr_text.data, | |
598 ls->addr_text_max_len, 0); | |
599 if (c->addr_text.len == 0) { | |
600 ngx_close_accepted_connection(c); | |
601 return; | |
602 } | |
603 } | |
604 | |
605 #if (NGX_DEBUG) | |
606 { | |
607 ngx_str_t addr; | |
608 u_char text[NGX_SOCKADDR_STRLEN]; | |
609 | |
610 ngx_debug_accepted_connection(ecf, c); | |
611 | |
612 if (log->log_level & NGX_LOG_DEBUG_EVENT) { | |
613 addr.data = text; | |
614 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, | |
615 NGX_SOCKADDR_STRLEN, 1); | |
616 | |
617 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, | |
618 "*%uA recvmsg: %V fd:%d n:%z", | |
619 c->number, &addr, c->fd, n); | |
620 } | |
621 | |
622 } | |
623 #endif | |
624 | |
625 log->data = NULL; | |
626 log->handler = NULL; | |
627 | |
628 ls->handler(c); | |
629 | |
630 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { | |
631 ev->available -= n; | |
632 } | |
633 | |
634 } while (ev->available); | |
635 } | |
636 | |
637 #endif | |
638 | |
639 | |
493 | 640 ngx_int_t |
641 ngx_trylock_accept_mutex(ngx_cycle_t *cycle) | |
301
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642 { |
611 | 643 if (ngx_shmtx_trylock(&ngx_accept_mutex)) { |
644 | |
301
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645 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, |
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646 "accept mutex locked"); |
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648 if (ngx_accept_mutex_held && ngx_accept_events == 0) { |
573 | 649 return NGX_OK; |
650 } | |
301
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651 |
573 | 652 if (ngx_enable_accept_events(cycle) == NGX_ERROR) { |
611 | 653 ngx_shmtx_unlock(&ngx_accept_mutex); |
573 | 654 return NGX_ERROR; |
301
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655 } |
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656 |
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657 ngx_accept_events = 0; |
573 | 658 ngx_accept_mutex_held = 1; |
659 | |
301
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660 return NGX_OK; |
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661 } |
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662 |
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663 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, |
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664 "accept mutex lock failed: %ui", ngx_accept_mutex_held); |
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665 |
302
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666 if (ngx_accept_mutex_held) { |
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667 if (ngx_disable_accept_events(cycle, 0) == NGX_ERROR) { |
301
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668 return NGX_ERROR; |
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669 } |
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670 |
302
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671 ngx_accept_mutex_held = 0; |
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672 } |
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673 |
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674 return NGX_OK; |
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675 } |
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676 |
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677 |
573 | 678 static ngx_int_t |
493 | 679 ngx_enable_accept_events(ngx_cycle_t *cycle) |
301
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680 { |
543 | 681 ngx_uint_t i; |
682 ngx_listening_t *ls; | |
683 ngx_connection_t *c; | |
301
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684 |
543 | 685 ls = cycle->listening.elts; |
301
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686 for (i = 0; i < cycle->listening.nelts; i++) { |
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687 |
543 | 688 c = ls[i].connection; |
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689 |
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690 if (c == NULL || c->read->active) { |
4618
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691 continue; |
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692 } |
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693 |
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694 if (ngx_add_event(c->read, NGX_READ_EVENT, 0) == NGX_ERROR) { |
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695 return NGX_ERROR; |
301
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696 } |
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697 } |
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698 |
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699 return NGX_OK; |
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700 } |
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701 |
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702 |
573 | 703 static ngx_int_t |
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704 ngx_disable_accept_events(ngx_cycle_t *cycle, ngx_uint_t all) |
301
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705 { |
543 | 706 ngx_uint_t i; |
707 ngx_listening_t *ls; | |
708 ngx_connection_t *c; | |
301
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709 |
543 | 710 ls = cycle->listening.elts; |
301
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711 for (i = 0; i < cycle->listening.nelts; i++) { |
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712 |
543 | 713 c = ls[i].connection; |
714 | |
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715 if (c == NULL || !c->read->active) { |
543 | 716 continue; |
717 } | |
301
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718 |
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719 #if (NGX_HAVE_REUSEPORT) |
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720 |
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721 /* |
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722 * do not disable accept on worker's own sockets |
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723 * when disabling accept events due to accept mutex |
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724 */ |
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725 |
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726 if (ls[i].reuseport && !all) { |
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727 continue; |
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728 } |
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729 |
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730 #endif |
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731 |
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732 if (ngx_del_event(c->read, NGX_READ_EVENT, NGX_DISABLE_EVENT) |
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733 == NGX_ERROR) |
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734 { |
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735 return NGX_ERROR; |
301
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736 } |
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737 } |
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738 |
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739 return NGX_OK; |
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740 } |
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741 |
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742 |
493 | 743 static void |
543 | 744 ngx_close_accepted_connection(ngx_connection_t *c) |
419
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745 { |
543 | 746 ngx_socket_t fd; |
747 | |
748 ngx_free_connection(c); | |
749 | |
750 fd = c->fd; | |
751 c->fd = (ngx_socket_t) -1; | |
752 | |
6436 | 753 if (!c->shared && ngx_close_socket(fd) == -1) { |
543 | 754 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno, |
419
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755 ngx_close_socket_n " failed"); |
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756 } |
495 | 757 |
543 | 758 if (c->pool) { |
759 ngx_destroy_pool(c->pool); | |
760 } | |
761 | |
495 | 762 #if (NGX_STAT_STUB) |
2951
5acd98486a33
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2723
diff
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|
763 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
495 | 764 #endif |
419
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765 } |
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766 |
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|
767 |
543 | 768 u_char * |
493 | 769 ngx_accept_log_error(ngx_log_t *log, u_char *buf, size_t len) |
191
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770 { |
543 | 771 return ngx_snprintf(buf, len, " while accepting new connection on %V", |
772 log->data); | |
191
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773 } |
6436 | 774 |
775 | |
776 #if (NGX_DEBUG) | |
777 | |
778 static void | |
779 ngx_debug_accepted_connection(ngx_event_conf_t *ecf, ngx_connection_t *c) | |
780 { | |
781 struct sockaddr_in *sin; | |
782 ngx_cidr_t *cidr; | |
783 ngx_uint_t i; | |
784 #if (NGX_HAVE_INET6) | |
785 struct sockaddr_in6 *sin6; | |
786 ngx_uint_t n; | |
787 #endif | |
788 | |
789 cidr = ecf->debug_connection.elts; | |
790 for (i = 0; i < ecf->debug_connection.nelts; i++) { | |
791 if (cidr[i].family != (ngx_uint_t) c->sockaddr->sa_family) { | |
792 goto next; | |
793 } | |
794 | |
795 switch (cidr[i].family) { | |
796 | |
797 #if (NGX_HAVE_INET6) | |
798 case AF_INET6: | |
799 sin6 = (struct sockaddr_in6 *) c->sockaddr; | |
800 for (n = 0; n < 16; n++) { | |
801 if ((sin6->sin6_addr.s6_addr[n] | |
802 & cidr[i].u.in6.mask.s6_addr[n]) | |
803 != cidr[i].u.in6.addr.s6_addr[n]) | |
804 { | |
805 goto next; | |
806 } | |
807 } | |
808 break; | |
809 #endif | |
810 | |
811 #if (NGX_HAVE_UNIX_DOMAIN) | |
812 case AF_UNIX: | |
813 break; | |
814 #endif | |
815 | |
816 default: /* AF_INET */ | |
817 sin = (struct sockaddr_in *) c->sockaddr; | |
818 if ((sin->sin_addr.s_addr & cidr[i].u.in.mask) | |
819 != cidr[i].u.in.addr) | |
820 { | |
821 goto next; | |
822 } | |
823 break; | |
824 } | |
825 | |
826 c->log->log_level = NGX_LOG_DEBUG_CONNECTION|NGX_LOG_DEBUG_ALL; | |
827 break; | |
828 | |
829 next: | |
830 continue; | |
831 } | |
832 } | |
833 | |
834 #endif |