Mercurial > hg > nginx
annotate src/os/win32/ngx_wsasend_chain.c @ 5851:150df089fe47
Removed the "complete" variable from various send chain functions.
It was made redundant by the previous change, since the "sent" variable
is no longer modified.
| author | Valentin Bartenev <vbart@nginx.com> |
|---|---|
| date | Wed, 13 Aug 2014 15:11:45 +0400 |
| parents | f9c83484d9ce |
| children | a6e83ac70af9 |
| rev | line source |
|---|---|
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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. |
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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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11 |
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12 |
| 461 | 13 #define NGX_WSABUFS 8 |
| 14 | |
| 15 | |
| 501 | 16 ngx_chain_t * |
| 17 ngx_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
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103
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18 { |
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19 int rc; |
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20 u_char *prev; |
| 473 | 21 u_long size, sent, send, prev_send; |
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22 ngx_err_t err; |
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23 ngx_event_t *wev; |
| 461 | 24 ngx_array_t vec; |
| 501 | 25 ngx_chain_t *cl; |
| 461 | 26 LPWSABUF wsabuf; |
| 27 WSABUF wsabufs[NGX_WSABUFS]; | |
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28 |
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29 wev = c->write; |
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30 |
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31 if (!wev->ready) { |
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32 return in; |
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33 } |
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34 |
| 473 | 35 /* the maximum limit size is the maximum u_long value - the page size */ |
| 36 | |
| 37 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) { | |
| 38 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize; | |
| 39 } | |
| 40 | |
| 461 | 41 send = 0; |
| 42 | |
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43 /* |
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44 * WSABUFs must be 4-byte aligned otherwise |
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45 * WSASend() will return undocumented WSAEINVAL error. |
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46 */ |
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47 |
| 461 | 48 vec.elts = wsabufs; |
| 49 vec.size = sizeof(WSABUF); | |
| 577 | 50 vec.nalloc = NGX_WSABUFS; |
| 461 | 51 vec.pool = c->pool; |
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52 |
| 461 | 53 for ( ;; ) { |
| 54 prev = NULL; | |
| 55 wsabuf = NULL; | |
| 473 | 56 prev_send = send; |
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57 |
| 461 | 58 vec.nelts = 0; |
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59 |
| 461 | 60 /* create the WSABUF and coalesce the neighbouring bufs */ |
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61 |
| 461 | 62 for (cl = in; |
| 63 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
| 64 cl = cl->next) | |
| 65 { | |
| 66 if (ngx_buf_special(cl->buf)) { | |
| 67 continue; | |
| 68 } | |
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69 |
| 461 | 70 size = cl->buf->last - cl->buf->pos; |
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71 |
| 461 | 72 if (send + size > limit) { |
| 73 size = (u_long) (limit - send); | |
| 74 } | |
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75 |
| 461 | 76 if (prev == cl->buf->pos) { |
| 77 wsabuf->len += cl->buf->last - cl->buf->pos; | |
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78 |
| 461 | 79 } else { |
| 501 | 80 wsabuf = ngx_array_push(&vec); |
| 81 if (wsabuf == NULL) { | |
| 461 | 82 return NGX_CHAIN_ERROR; |
| 83 } | |
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84 |
| 461 | 85 wsabuf->buf = (char *) cl->buf->pos; |
| 86 wsabuf->len = cl->buf->last - cl->buf->pos; | |
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87 } |
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88 |
| 461 | 89 prev = cl->buf->last; |
| 90 send += size; | |
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91 } |
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92 |
| 461 | 93 sent = 0; |
| 94 | |
| 95 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, NULL, NULL); | |
| 96 | |
| 97 if (rc == -1) { | |
| 98 err = ngx_errno; | |
| 99 | |
| 100 if (err == WSAEWOULDBLOCK) { | |
| 101 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
| 102 "WSASend() not ready"); | |
| 103 | |
| 104 } else { | |
| 105 wev->error = 1; | |
| 106 ngx_connection_error(c, err, "WSASend() failed"); | |
| 107 return NGX_CHAIN_ERROR; | |
| 108 } | |
| 109 } | |
| 110 | |
| 111 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
| 112 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
| 113 | |
| 114 c->sent += sent; | |
| 115 | |
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5850
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Moved the code for adjusting sent buffers in a separate function.
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116 cl = ngx_handle_sent_chain(in, sent); |
| 461 | 117 |
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5851
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118 if (send - prev_send != sent) { |
| 461 | 119 wev->ready = 0; |
| 120 return cl; | |
| 121 } | |
| 122 | |
| 123 if (send >= limit || cl == NULL) { | |
| 124 return cl; | |
| 125 } | |
| 126 | |
| 127 in = cl; | |
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128 } |
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129 } |
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130 |
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131 |
| 501 | 132 ngx_chain_t * |
| 133 ngx_overlapped_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
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134 { |
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135 int rc; |
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136 u_char *prev; |
| 473 | 137 u_long size, send, sent; |
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138 ngx_err_t err; |
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139 ngx_event_t *wev; |
| 461 | 140 ngx_array_t vec; |
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141 ngx_chain_t *cl; |
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142 LPWSAOVERLAPPED ovlp; |
| 501 | 143 LPWSABUF wsabuf; |
| 461 | 144 WSABUF wsabufs[NGX_WSABUFS]; |
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145 |
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146 wev = c->write; |
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147 |
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148 if (!wev->ready) { |
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149 return in; |
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150 } |
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151 |
| 461 | 152 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 153 "wev->complete: %d", wev->complete); | |
| 154 | |
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155 if (!wev->complete) { |
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156 |
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157 /* post the overlapped WSASend() */ |
| 473 | 158 |
| 159 /* the maximum limit size is the maximum u_long value - the page size */ | |
| 160 | |
| 161 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) { | |
| 162 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize; | |
| 163 } | |
| 577 | 164 |
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165 /* |
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166 * WSABUFs must be 4-byte aligned otherwise |
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167 * WSASend() will return undocumented WSAEINVAL error. |
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168 */ |
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169 |
| 461 | 170 vec.elts = wsabufs; |
| 171 vec.nelts = 0; | |
| 172 vec.size = sizeof(WSABUF); | |
| 577 | 173 vec.nalloc = NGX_WSABUFS; |
| 461 | 174 vec.pool = c->pool; |
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175 |
| 461 | 176 send = 0; |
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177 prev = NULL; |
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178 wsabuf = NULL; |
| 577 | 179 |
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180 /* create the WSABUF and coalesce the neighbouring bufs */ |
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181 |
| 461 | 182 for (cl = in; |
| 183 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
| 184 cl = cl->next) | |
| 185 { | |
| 186 if (ngx_buf_special(cl->buf)) { | |
| 187 continue; | |
| 188 } | |
| 189 | |
| 190 size = cl->buf->last - cl->buf->pos; | |
| 191 | |
| 192 if (send + size > limit) { | |
| 193 size = (u_long) (limit - send); | |
| 194 } | |
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195 |
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196 if (prev == cl->buf->pos) { |
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197 wsabuf->len += cl->buf->last - cl->buf->pos; |
| 461 | 198 |
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199 } else { |
| 501 | 200 wsabuf = ngx_array_push(&vec); |
| 201 if (wsabuf == NULL) { | |
| 461 | 202 return NGX_CHAIN_ERROR; |
| 203 } | |
| 204 | |
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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:
292
diff
changeset
|
205 wsabuf->buf = (char *) cl->buf->pos; |
|
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:
292
diff
changeset
|
206 wsabuf->len = cl->buf->last - cl->buf->pos; |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
207 } |
| 461 | 208 |
| 209 prev = cl->buf->last; | |
| 210 send += size; | |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
211 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
212 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
213 ovlp = (LPWSAOVERLAPPED) &c->write->ovlp; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
214 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); |
| 577 | 215 |
| 461 | 216 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, ovlp, NULL); |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
217 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
218 wev->complete = 0; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
219 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
220 if (rc == -1) { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
221 err = ngx_errno; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
222 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
223 if (err == WSA_IO_PENDING) { |
| 461 | 224 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
| 225 "WSASend() posted"); | |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
226 wev->active = 1; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
227 return in; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
228 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
229 } else { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
230 wev->error = 1; |
|
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
257
diff
changeset
|
231 ngx_connection_error(c, err, "WSASend() failed"); |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
232 return NGX_CHAIN_ERROR; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
233 } |
| 577 | 234 |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
235 } else if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
236 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
237 /* |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
238 * if a socket was bound with I/O completion port then |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
239 * GetQueuedCompletionStatus() would anyway return its status |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
240 * despite that WSASend() was already complete |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
241 */ |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
242 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
243 wev->active = 1; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
244 return in; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
245 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
246 |
| 461 | 247 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 248 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
| 249 | |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
250 } else { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
251 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
252 /* the overlapped WSASend() complete */ |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
253 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
254 wev->complete = 0; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
255 wev->active = 0; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
256 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
257 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
258 if (wev->ovlp.error) { |
|
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
257
diff
changeset
|
259 ngx_connection_error(c, wev->ovlp.error, "WSASend() failed"); |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
260 return NGX_CHAIN_ERROR; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
261 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
262 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
263 sent = wev->available; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
264 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
265 } else { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
266 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &wev->ovlp, |
| 2776 | 267 &sent, 0, NULL) |
| 268 == 0) | |
| 269 { | |
|
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
257
diff
changeset
|
270 ngx_connection_error(c, ngx_socket_errno, |
|
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
257
diff
changeset
|
271 "WSASend() or WSAGetOverlappedResult() failed"); |
| 577 | 272 |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
273 return NGX_CHAIN_ERROR; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
274 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
275 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
276 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
277 |
| 461 | 278 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 279 "WSASend ovlp: fd:%d, s:%ul", c->fd, sent); | |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
280 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
281 c->sent += sent; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
282 |
|
5850
f9c83484d9ce
Moved the code for adjusting sent buffers in a separate function.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
|
283 cl = ngx_handle_sent_chain(in, sent); |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
284 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
285 if (cl) { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
286 wev->ready = 0; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
287 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
288 } else { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
289 wev->ready = 1; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
290 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
291 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
292 return cl; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
293 } |