Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_readv_chain.c @ 5425:1356a3b96924
SSL: added ability to set keys used for Session Tickets (RFC5077).
In order to support key rollover, ssl_session_ticket_key can be defined
multiple times. The first key will be used to issue and resume Session
Tickets, while the rest will be used only to resume them.
ssl_session_ticket_key session_tickets/current.key;
ssl_session_ticket_key session_tickets/prev-1h.key;
ssl_session_ticket_key session_tickets/prev-2h.key;
Please note that nginx supports Session Tickets even without explicit
configuration of the keys and this feature should be only used in setups
where SSL traffic is distributed across multiple nginx servers.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
author | Piotr Sikora <piotr@cloudflare.com> |
---|---|
date | Fri, 11 Oct 2013 16:05:24 -0700 |
parents | ee78c7705a8e |
children | d1bde5c3c5d2 |
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> |
73
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11 |
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12 |
501 | 13 #define NGX_IOVS 16 |
14 | |
15 | |
469 | 16 #if (NGX_HAVE_KQUEUE) |
188
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17 |
501 | 18 ssize_t |
19 ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain) | |
73
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20 { |
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21 u_char *prev; |
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22 ssize_t n, size; |
74
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23 ngx_err_t err; |
501 | 24 ngx_array_t vec; |
188
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25 ngx_event_t *rev; |
501 | 26 struct iovec *iov, iovs[NGX_IOVS]; |
188
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27 |
577 | 28 rev = c->read; |
188
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29 |
455 | 30 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
257
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31 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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32 "readv: eof:%d, avail:%d, err:%d", |
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33 rev->pending_eof, rev->available, rev->kq_errno); |
188
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34 |
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35 if (rev->available == 0) { |
587 | 36 if (rev->pending_eof) { |
188
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37 rev->ready = 0; |
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38 rev->eof = 1; |
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39 |
587 | 40 ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno, |
41 "kevent() reported about an closed connection"); | |
42 | |
188
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43 if (rev->kq_errno) { |
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44 rev->error = 1; |
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45 ngx_set_socket_errno(rev->kq_errno); |
587 | 46 return NGX_ERROR; |
188
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47 } |
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48 |
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49 return 0; |
587 | 50 |
51 } else { | |
52 return NGX_AGAIN; | |
188
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53 } |
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54 } |
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55 } |
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56 |
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57 prev = NULL; |
89
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58 iov = NULL; |
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59 size = 0; |
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60 |
501 | 61 vec.elts = iovs; |
62 vec.nelts = 0; | |
63 vec.size = sizeof(struct iovec); | |
64 vec.nalloc = NGX_IOVS; | |
65 vec.pool = c->pool; | |
73
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66 |
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67 /* coalesce the neighbouring bufs */ |
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68 |
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69 while (chain) { |
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70 if (prev == chain->buf->last) { |
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71 iov->iov_len += chain->buf->end - chain->buf->last; |
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72 |
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73 } else { |
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74 if (vec.nelts >= IOV_MAX) { |
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75 break; |
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76 } |
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77 |
501 | 78 iov = ngx_array_push(&vec); |
79 if (iov == NULL) { | |
80 return NGX_ERROR; | |
81 } | |
82 | |
343
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83 iov->iov_base = (void *) chain->buf->last; |
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84 iov->iov_len = chain->buf->end - chain->buf->last; |
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85 } |
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86 |
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87 size += chain->buf->end - chain->buf->last; |
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88 prev = chain->buf->end; |
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89 chain = chain->next; |
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90 } |
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91 |
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92 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
501 | 93 "readv: %d, last:%d", vec.nelts, iov->iov_len); |
75
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94 |
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95 rev = c->read; |
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96 |
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97 do { |
501 | 98 n = readv(c->fd, (struct iovec *) vec.elts, vec.nelts); |
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99 |
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100 if (n >= 0) { |
455 | 101 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
188
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102 rev->available -= n; |
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103 |
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104 /* |
587 | 105 * rev->available may be negative here because some additional |
106 * bytes may be received between kevent() and recv() | |
188
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107 */ |
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108 |
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109 if (rev->available <= 0) { |
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110 if (!rev->pending_eof) { |
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111 rev->ready = 0; |
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112 } |
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113 |
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114 if (rev->available < 0) { |
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115 rev->available = 0; |
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116 } |
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117 } |
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118 |
605 | 119 if (n == 0) { |
120 | |
121 /* | |
122 * on FreeBSD recv() may return 0 on closed socket | |
123 * even if kqueue reported about available data | |
124 */ | |
125 | |
627 | 126 #if 0 |
605 | 127 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
609 | 128 "readv() returned 0 while kevent() reported " |
605 | 129 "%d available bytes", rev->available); |
627 | 130 #endif |
605 | 131 |
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132 rev->ready = 0; |
605 | 133 rev->eof = 1; |
134 rev->available = 0; | |
135 } | |
136 | |
188
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137 return n; |
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138 } |
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139 |
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140 if (n < size && !(ngx_event_flags & NGX_USE_GREEDY_EVENT)) { |
188
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141 rev->ready = 0; |
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142 } |
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143 |
0061d1f0908d
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parents:
164
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144 if (n == 0) { |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
164
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145 rev->eof = 1; |
0061d1f0908d
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parents:
164
diff
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146 } |
0061d1f0908d
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147 |
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148 return n; |
73
4534060fde92
nginx-0.0.1-2003-04-10-19:08:54 import
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parents:
diff
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149 } |
4534060fde92
nginx-0.0.1-2003-04-10-19:08:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
150 |
257
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nginx-0.0.2-2004-02-11-20:08:49 import
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parents:
188
diff
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|
151 err = ngx_socket_errno; |
70e1c7d2b83d
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parents:
188
diff
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|
152 |
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parents:
188
diff
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|
153 if (err == NGX_EAGAIN || err == NGX_EINTR) { |
70e1c7d2b83d
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188
diff
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154 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
70e1c7d2b83d
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parents:
188
diff
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|
155 "readv() not ready"); |
70e1c7d2b83d
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parents:
188
diff
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156 n = NGX_AGAIN; |
188
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parents:
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157 |
257
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parents:
188
diff
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158 } else { |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
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parents:
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diff
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159 n = ngx_connection_error(c, err, "readv() failed"); |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
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parents:
188
diff
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|
160 break; |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
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|
161 } |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
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162 |
257
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
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parents:
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diff
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163 } while (err == NGX_EINTR); |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
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164 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
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165 rev->ready = 0; |
0061d1f0908d
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Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
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166 |
3642 | 167 if (n == NGX_ERROR) { |
164
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
163
diff
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168 c->read->error = 1; |
73
4534060fde92
nginx-0.0.1-2003-04-10-19:08:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
169 } |
4534060fde92
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parents:
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170 |
4534060fde92
nginx-0.0.1-2003-04-10-19:08:54 import
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171 return n; |
4534060fde92
nginx-0.0.1-2003-04-10-19:08:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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172 } |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
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173 |
469 | 174 #else /* ! NGX_HAVE_KQUEUE */ |
188
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175 |
501 | 176 ssize_t |
177 ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain) | |
188
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parents:
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178 { |
305
4b1a3a4acc60
nginx-0.0.3-2004-04-02-19:13:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
303
diff
changeset
|
179 u_char *prev; |
188
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parents:
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180 ssize_t n, size; |
0061d1f0908d
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parents:
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181 ngx_err_t err; |
501 | 182 ngx_array_t vec; |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
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diff
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183 ngx_event_t *rev; |
501 | 184 struct iovec *iov, iovs[NGX_IOVS]; |
188
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nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
164
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185 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
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|
186 prev = NULL; |
0061d1f0908d
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parents:
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187 iov = NULL; |
0061d1f0908d
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parents:
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188 size = 0; |
0061d1f0908d
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parents:
164
diff
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|
189 |
501 | 190 vec.elts = iovs; |
191 vec.nelts = 0; | |
192 vec.size = sizeof(struct iovec); | |
193 vec.nalloc = NGX_IOVS; | |
194 vec.pool = c->pool; | |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
164
diff
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|
195 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
328
diff
changeset
|
196 /* coalesce the neighbouring bufs */ |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
164
diff
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197 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
164
diff
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|
198 while (chain) { |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
328
diff
changeset
|
199 if (prev == chain->buf->last) { |
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
328
diff
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|
200 iov->iov_len += chain->buf->end - chain->buf->last; |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
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|
201 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
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|
202 } else { |
4597
4be36d5e78ae
Fixed ngx_readv_chain() to honor IOV_MAX (ticket #14).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
|
203 if (vec.nelts >= IOV_MAX) { |
4be36d5e78ae
Fixed ngx_readv_chain() to honor IOV_MAX (ticket #14).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
|
204 break; |
4be36d5e78ae
Fixed ngx_readv_chain() to honor IOV_MAX (ticket #14).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
|
205 } |
4be36d5e78ae
Fixed ngx_readv_chain() to honor IOV_MAX (ticket #14).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
|
206 |
501 | 207 iov = ngx_array_push(&vec); |
208 if (iov == NULL) { | |
209 return NGX_ERROR; | |
210 } | |
211 | |
561 | 212 iov->iov_base = (void *) chain->buf->last; |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
328
diff
changeset
|
213 iov->iov_len = chain->buf->end - chain->buf->last; |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
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|
214 } |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
215 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
328
diff
changeset
|
216 size += chain->buf->end - chain->buf->last; |
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
328
diff
changeset
|
217 prev = chain->buf->end; |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
164
diff
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|
218 chain = chain->next; |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
164
diff
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|
219 } |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
220 |
257
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
221 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
501 | 222 "readv: %d:%d", vec.nelts, iov->iov_len); |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
223 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
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|
224 rev = c->read; |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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parents:
164
diff
changeset
|
225 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
226 do { |
501 | 227 n = readv(c->fd, (struct iovec *) vec.elts, vec.nelts); |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
228 |
328
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
229 if (n == 0) { |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
230 rev->ready = 0; |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
231 rev->eof = 1; |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
232 |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
233 return n; |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
234 |
fb4dfb2ac0fc
nginx-0.0.3-2004-04-28-10:14:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
235 } 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
|
236 |
455 | 237 if (n < size && !(ngx_event_flags & NGX_USE_GREEDY_EVENT)) { |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
238 rev->ready = 0; |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
239 } |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
240 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
241 return n; |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
242 } |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
243 |
257
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
244 err = ngx_socket_errno; |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
245 |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
246 if (err == NGX_EAGAIN || err == NGX_EINTR) { |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
247 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
248 "readv() not ready"); |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
249 n = NGX_AGAIN; |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
250 |
257
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
251 } else { |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
252 n = ngx_connection_error(c, err, "readv() failed"); |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
253 break; |
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
254 } |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
255 |
257
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
188
diff
changeset
|
256 } while (err == NGX_EINTR); |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
257 |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
258 rev->ready = 0; |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
259 |
3642 | 260 if (n == NGX_ERROR) { |
188
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
261 c->read->error = 1; |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
262 } |
0061d1f0908d
nginx-0.0.1-2003-11-18-11:04:34 import
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263 |
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264 return n; |
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265 } |
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266 |
469 | 267 #endif /* NGX_HAVE_KQUEUE */ |