Mercurial > hg > nginx-quic
annotate src/os/win32/ngx_wsasend_chain.c @ 4448:539355d9e675 stable-1.0
Merge of r4404:
Fixed sched_setaffinity(2) to correctly pass size.
Second argument (cpusetsize) is size in bytes, not in bits. Previously
used constant 32 resulted in reading of uninitialized memory and caused
EINVAL to be returned on some Linux kernels.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Sun, 05 Feb 2012 19:25:24 +0000 |
parents | 88987e52be42 |
children | d620f497c50f |
rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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5 |
103
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
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10 |
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11 |
461 | 12 #define NGX_WSABUFS 8 |
13 | |
14 | |
501 | 15 ngx_chain_t * |
16 ngx_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
103
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17 { |
184
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18 int rc; |
292
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19 u_char *prev; |
473 | 20 u_long size, sent, send, prev_send; |
461 | 21 ngx_uint_t complete; |
184
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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]; | |
184
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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 complete = 0; | |
43 | |
184
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44 /* |
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45 * WSABUFs must be 4-byte aligned otherwise |
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46 * WSASend() will return undocumented WSAEINVAL error. |
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47 */ |
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48 |
461 | 49 vec.elts = wsabufs; |
50 vec.size = sizeof(WSABUF); | |
577 | 51 vec.nalloc = NGX_WSABUFS; |
461 | 52 vec.pool = c->pool; |
184
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53 |
461 | 54 for ( ;; ) { |
55 prev = NULL; | |
56 wsabuf = NULL; | |
473 | 57 prev_send = send; |
184
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58 |
461 | 59 vec.nelts = 0; |
184
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60 |
461 | 61 /* create the WSABUF and coalesce the neighbouring bufs */ |
184
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62 |
461 | 63 for (cl = in; |
64 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
65 cl = cl->next) | |
66 { | |
67 if (ngx_buf_special(cl->buf)) { | |
68 continue; | |
69 } | |
184
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70 |
461 | 71 size = cl->buf->last - cl->buf->pos; |
184
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72 |
461 | 73 if (send + size > limit) { |
74 size = (u_long) (limit - send); | |
75 } | |
184
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76 |
461 | 77 if (prev == cl->buf->pos) { |
78 wsabuf->len += cl->buf->last - cl->buf->pos; | |
184
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79 |
461 | 80 } else { |
501 | 81 wsabuf = ngx_array_push(&vec); |
82 if (wsabuf == NULL) { | |
461 | 83 return NGX_CHAIN_ERROR; |
84 } | |
184
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85 |
461 | 86 wsabuf->buf = (char *) cl->buf->pos; |
87 wsabuf->len = cl->buf->last - cl->buf->pos; | |
184
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88 } |
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89 |
461 | 90 prev = cl->buf->last; |
91 send += size; | |
184
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92 } |
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93 |
461 | 94 sent = 0; |
95 | |
96 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, NULL, NULL); | |
97 | |
98 if (rc == -1) { | |
99 err = ngx_errno; | |
100 | |
101 if (err == WSAEWOULDBLOCK) { | |
102 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
103 "WSASend() not ready"); | |
104 | |
105 } else { | |
106 wev->error = 1; | |
107 ngx_connection_error(c, err, "WSASend() failed"); | |
108 return NGX_CHAIN_ERROR; | |
109 } | |
110 } | |
111 | |
112 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
113 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
114 | |
473 | 115 if (send - prev_send == sent) { |
461 | 116 complete = 1; |
184
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117 } |
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118 |
461 | 119 c->sent += sent; |
120 | |
2614 | 121 for (cl = in; cl; cl = cl->next) { |
122 | |
461 | 123 if (ngx_buf_special(cl->buf)) { |
124 continue; | |
125 } | |
126 | |
127 if (sent == 0) { | |
128 break; | |
129 } | |
130 | |
131 size = cl->buf->last - cl->buf->pos; | |
132 | |
133 if (sent >= size) { | |
134 sent -= size; | |
135 cl->buf->pos = cl->buf->last; | |
184
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136 |
461 | 137 continue; |
138 } | |
139 | |
140 cl->buf->pos += sent; | |
141 | |
142 break; | |
143 } | |
144 | |
145 if (!complete) { | |
146 wev->ready = 0; | |
147 return cl; | |
148 } | |
149 | |
150 if (send >= limit || cl == NULL) { | |
151 return cl; | |
152 } | |
153 | |
154 in = cl; | |
184
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155 } |
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156 } |
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157 |
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158 |
501 | 159 ngx_chain_t * |
160 ngx_overlapped_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
184
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161 { |
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162 int rc; |
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163 u_char *prev; |
473 | 164 u_long size, send, sent; |
184
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165 ngx_err_t err; |
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166 ngx_event_t *wev; |
461 | 167 ngx_array_t vec; |
184
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168 ngx_chain_t *cl; |
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169 LPWSAOVERLAPPED ovlp; |
501 | 170 LPWSABUF wsabuf; |
461 | 171 WSABUF wsabufs[NGX_WSABUFS]; |
184
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172 |
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173 wev = c->write; |
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174 |
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175 if (!wev->ready) { |
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176 return in; |
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177 } |
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178 |
461 | 179 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
180 "wev->complete: %d", wev->complete); | |
181 | |
184
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182 if (!wev->complete) { |
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183 |
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184 /* post the overlapped WSASend() */ |
473 | 185 |
186 /* the maximum limit size is the maximum u_long value - the page size */ | |
187 | |
188 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) { | |
189 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize; | |
190 } | |
577 | 191 |
184
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192 /* |
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193 * WSABUFs must be 4-byte aligned otherwise |
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194 * WSASend() will return undocumented WSAEINVAL error. |
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195 */ |
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196 |
461 | 197 vec.elts = wsabufs; |
198 vec.nelts = 0; | |
199 vec.size = sizeof(WSABUF); | |
577 | 200 vec.nalloc = NGX_WSABUFS; |
461 | 201 vec.pool = c->pool; |
184
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202 |
461 | 203 send = 0; |
184
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204 prev = NULL; |
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205 wsabuf = NULL; |
577 | 206 |
184
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207 /* create the WSABUF and coalesce the neighbouring bufs */ |
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208 |
461 | 209 for (cl = in; |
210 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
211 cl = cl->next) | |
212 { | |
213 if (ngx_buf_special(cl->buf)) { | |
214 continue; | |
215 } | |
216 | |
217 size = cl->buf->last - cl->buf->pos; | |
218 | |
219 if (send + size > limit) { | |
220 size = (u_long) (limit - send); | |
221 } | |
184
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222 |
343
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223 if (prev == cl->buf->pos) { |
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224 wsabuf->len += cl->buf->last - cl->buf->pos; |
461 | 225 |
184
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226 } else { |
501 | 227 wsabuf = ngx_array_push(&vec); |
228 if (wsabuf == NULL) { | |
461 | 229 return NGX_CHAIN_ERROR; |
230 } | |
231 | |
343
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232 wsabuf->buf = (char *) cl->buf->pos; |
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233 wsabuf->len = cl->buf->last - cl->buf->pos; |
184
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234 } |
461 | 235 |
236 prev = cl->buf->last; | |
237 send += size; | |
184
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238 } |
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239 |
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240 ovlp = (LPWSAOVERLAPPED) &c->write->ovlp; |
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241 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); |
577 | 242 |
461 | 243 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, ovlp, NULL); |
184
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244 |
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245 wev->complete = 0; |
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246 |
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247 if (rc == -1) { |
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248 err = ngx_errno; |
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249 |
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250 if (err == WSA_IO_PENDING) { |
461 | 251 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
252 "WSASend() posted"); | |
184
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253 wev->active = 1; |
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254 return in; |
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255 |
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256 } else { |
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257 wev->error = 1; |
278
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258 ngx_connection_error(c, err, "WSASend() failed"); |
184
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259 return NGX_CHAIN_ERROR; |
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260 } |
577 | 261 |
184
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262 } else if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
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263 |
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264 /* |
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265 * if a socket was bound with I/O completion port then |
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266 * GetQueuedCompletionStatus() would anyway return its status |
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267 * despite that WSASend() was already complete |
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268 */ |
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269 |
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270 wev->active = 1; |
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271 return in; |
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272 } |
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273 |
461 | 274 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
275 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
276 | |
184
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277 } else { |
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278 |
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279 /* the overlapped WSASend() complete */ |
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280 |
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281 wev->complete = 0; |
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282 wev->active = 0; |
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283 |
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284 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
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285 if (wev->ovlp.error) { |
278
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nginx-0.0.2-2004-03-04-10:04:55 import
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286 ngx_connection_error(c, wev->ovlp.error, "WSASend() failed"); |
184
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287 return NGX_CHAIN_ERROR; |
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288 } |
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289 |
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290 sent = wev->available; |
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291 |
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292 } else { |
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293 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &wev->ovlp, |
2776 | 294 &sent, 0, NULL) |
295 == 0) | |
296 { | |
278
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297 ngx_connection_error(c, ngx_socket_errno, |
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298 "WSASend() or WSAGetOverlappedResult() failed"); |
577 | 299 |
184
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300 return NGX_CHAIN_ERROR; |
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301 } |
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302 } |
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303 } |
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304 |
461 | 305 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
306 "WSASend ovlp: fd:%d, s:%ul", c->fd, sent); | |
184
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307 |
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308 c->sent += sent; |
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309 |
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310 for (cl = in; cl && sent > 0; cl = cl->next) { |
461 | 311 if (ngx_buf_special(cl->buf)) { |
312 continue; | |
313 } | |
314 | |
315 if (sent == 0) { | |
316 break; | |
317 } | |
184
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318 |
343
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319 size = cl->buf->last - cl->buf->pos; |
184
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320 |
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321 if (sent >= size) { |
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322 sent -= size; |
461 | 323 cl->buf->pos = cl->buf->last; |
184
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324 |
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325 continue; |
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326 } |
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327 |
461 | 328 cl->buf->pos += sent; |
184
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329 |
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330 break; |
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331 } |
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332 |
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333 if (cl) { |
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nginx-0.0.1-2003-11-14-10:20:34 import
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334 wev->ready = 0; |
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335 |
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336 } else { |
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337 wev->ready = 1; |
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338 } |
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339 |
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340 return cl; |
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341 } |