Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_recv.c @ 5267:13c006f0c40e
Events: honor NGX_USE_GREEDY_EVENT when kqueue support is enabled.
Currently this flag is needed for epoll and rtsig, and though these methods
usually present on different platforms than kqueue, nginx can be compiled to
support all of them.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Sat, 13 Jul 2013 03:24:30 +0400 |
parents | d620f497c50f |
children | ee78c7705a8e |
rev | line source |
---|---|
441
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1 |
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2 /* |
444
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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 |
91
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
103
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10 #include <ngx_event.h> |
96
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11 |
91
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12 |
469 | 13 #if (NGX_HAVE_KQUEUE) |
91
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14 |
1680 | 15 ssize_t |
16 ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
91
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17 { |
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18 ssize_t n; |
253
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19 ngx_err_t err; |
96
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20 ngx_event_t *rev; |
91
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21 |
96
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22 rev = c->read; |
91
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23 |
455 | 24 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
218
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25 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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26 "recv: eof:%d, avail:%d, err:%d", |
375
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27 rev->pending_eof, rev->available, rev->kq_errno); |
91
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28 |
96
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29 if (rev->available == 0) { |
587 | 30 if (rev->pending_eof) { |
148
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31 rev->ready = 0; |
163
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32 rev->eof = 1; |
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33 |
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34 if (rev->kq_errno) { |
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35 rev->error = 1; |
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36 ngx_set_socket_errno(rev->kq_errno); |
218
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37 |
537 | 38 return ngx_connection_error(c, rev->kq_errno, |
39 "kevent() reported about an closed connection"); | |
96
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40 } |
163
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41 |
96
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42 return 0; |
587 | 43 |
44 } else { | |
1875
c11d96cbad75
reset ready flag if no data is available,
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45 rev->ready = 0; |
587 | 46 return NGX_AGAIN; |
96
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47 } |
91
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48 } |
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49 } |
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50 |
96
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51 do { |
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52 n = recv(c->fd, buf, size, 0); |
91
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53 |
253
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54 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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55 "recv: fd:%d %d of %d", c->fd, n, size); |
93
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56 |
96
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57 if (n >= 0) { |
455 | 58 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
96
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59 rev->available -= n; |
163
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60 |
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61 /* |
583 | 62 * rev->available may be negative here because some additional |
587 | 63 * bytes may be received between kevent() and recv() |
163
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64 */ |
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65 |
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66 if (rev->available <= 0) { |
375
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67 if (!rev->pending_eof) { |
148
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68 rev->ready = 0; |
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69 } |
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70 |
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71 if (rev->available < 0) { |
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72 rev->available = 0; |
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73 } |
96
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74 } |
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75 |
605 | 76 if (n == 0) { |
77 | |
78 /* | |
79 * on FreeBSD recv() may return 0 on closed socket | |
80 * even if kqueue reported about available data | |
81 */ | |
82 | |
83 rev->eof = 1; | |
84 rev->available = 0; | |
85 } | |
86 | |
96
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87 return n; |
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88 } |
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89 |
5267
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90 if ((size_t) n < size |
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91 && !(ngx_event_flags & NGX_USE_GREEDY_EVENT)) |
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92 { |
96
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93 rev->ready = 0; |
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94 } |
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95 |
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96 if (n == 0) { |
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97 rev->eof = 1; |
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98 } |
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99 |
96
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100 return n; |
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101 } |
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102 |
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103 err = ngx_socket_errno; |
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104 |
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105 if (err == NGX_EAGAIN || err == NGX_EINTR) { |
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106 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
253
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107 "recv() not ready"); |
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108 n = NGX_AGAIN; |
91
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109 |
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110 } else { |
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111 n = ngx_connection_error(c, err, "recv() failed"); |
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112 break; |
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113 } |
91
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114 |
253
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115 } while (err == NGX_EINTR); |
188
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116 |
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117 rev->ready = 0; |
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118 |
3642 | 119 if (n == NGX_ERROR) { |
184
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120 rev->error = 1; |
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121 } |
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122 |
91
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123 return n; |
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124 } |
96
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125 |
469 | 126 #else /* ! NGX_HAVE_KQUEUE */ |
96
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127 |
1680 | 128 ssize_t |
129 ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
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130 { |
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nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
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131 ssize_t n; |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
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132 ngx_err_t err; |
96
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nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
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133 ngx_event_t *rev; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
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parents:
93
diff
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134 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
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parents:
93
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135 rev = c->read; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
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136 |
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nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
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137 do { |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
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138 n = recv(c->fd, buf, size, 0); |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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139 |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
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140 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
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141 "recv: fd:%d %d of %d", c->fd, n, size); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
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142 |
328
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
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143 if (n == 0) { |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
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144 rev->ready = 0; |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
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145 rev->eof = 1; |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
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146 return n; |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
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147 |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
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148 } else if (n > 0) { |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
149 |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
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150 if ((size_t) n < size |
455 | 151 && !(ngx_event_flags & NGX_USE_GREEDY_EVENT)) |
328
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
152 { |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
153 rev->ready = 0; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
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|
154 } |
163
fb61ba77beba
nginx-0.0.1-2003-10-28-18:45:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
148
diff
changeset
|
155 |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
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|
156 return n; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
157 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
158 |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
159 err = ngx_socket_errno; |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
160 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
161 if (err == NGX_EAGAIN || err == NGX_EINTR) { |
257
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
256
diff
changeset
|
162 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
163 "recv() not ready"); |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
164 n = NGX_AGAIN; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
165 |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
166 } else { |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
167 n = ngx_connection_error(c, err, "recv() failed"); |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
168 break; |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
169 } |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
170 |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
171 } while (err == NGX_EINTR); |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
diff
changeset
|
172 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
diff
changeset
|
173 rev->ready = 0; |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
diff
changeset
|
174 |
3642 | 175 if (n == NGX_ERROR) { |
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
163
diff
changeset
|
176 rev->error = 1; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
163
diff
changeset
|
177 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
163
diff
changeset
|
178 |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
179 return n; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
180 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
181 |
469 | 182 #endif /* NGX_HAVE_KQUEUE */ |