Mercurial > hg > nginx

annotate src/os/unix/ngx_writev_chain.c @ 362:7650aea1816f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.7-2004-06-21-19:59:32 import
author Igor Sysoev <igor@sysoev.ru>
date Mon, 21 Jun 2004 15:59:32 +0000
parents 6bdf858bff8c
children 744ccb59062d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 #include <ngx_config.h>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
3 #include <ngx_core.h>
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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parents: 103
diff changeset
4 #include <ngx_event.h>
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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5
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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6
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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7 ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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8 {
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87e73f067470 nginx-0.0.2-2004-03-16-10:10:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 257
diff changeset
9 u_char *prev;
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
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10 ssize_t n, size;
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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11 off_t send, sprev, sent;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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12 struct iovec *iov;
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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13 ngx_uint_t eintr, complete;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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14 ngx_err_t err;
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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15 ngx_array_t vec;
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c42be4185301 nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 144
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16 ngx_chain_t *cl;
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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17 ngx_event_t *wev;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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18
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34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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19 wev = c->write;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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20
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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21 if (!wev->ready) {
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
Igor Sysoev <igor@sysoev.ru>
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22 return in;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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23 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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24
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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25 #if (HAVE_KQUEUE)
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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26
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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27 if ((ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) && wev->kq_eof) {
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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28 ngx_log_error(NGX_LOG_INFO, c->log, wev->kq_errno,
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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29 "kevent() reported about an closed connection");
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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30
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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31 wev->error = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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32 return NGX_CHAIN_ERROR;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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33 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
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34
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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35 #endif
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
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36
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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37 ngx_init_array(vec, c->pool, 10, sizeof(struct iovec), NGX_CHAIN_ERROR);
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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38
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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39 send = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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40 complete = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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41
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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42 for ( ;; ) {
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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43 prev = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
44 iov = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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45 eintr = 0;
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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46 sprev = send;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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47
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: 290
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48 /* create the iovec and coalesce the neighbouring bufs */
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents: 170
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49
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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50 for (cl = in; cl && vec.nelts < IOV_MAX && send < limit; cl = cl->next)
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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51 {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
52 if (ngx_buf_special(cl->buf)) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
53 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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54 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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55
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
56 size = cl->buf->last - cl->buf->pos;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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57
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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58 if (send + size > limit) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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59 size = limit - send;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
60 }
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
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61
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: 290
diff changeset
62 if (prev == cl->buf->pos) {
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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63 iov->iov_len += size;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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64
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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65 } else {
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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66 ngx_test_null(iov, ngx_push_array(&vec), NGX_CHAIN_ERROR);
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6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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67 iov->iov_base = (void *) cl->buf->pos;
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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68 iov->iov_len = size;
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parents: 195
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69 }
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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70
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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71 prev = cl->buf->pos + size;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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72 send += size;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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73 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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74
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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75 n = writev(c->fd, vec.elts, vec.nelts);
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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76
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34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
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77 if (n == -1) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
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78 err = ngx_errno;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
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79
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70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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80 if (err == NGX_EAGAIN || err == NGX_EINTR) {
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
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81 if (err == NGX_EINTR) {
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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82 eintr = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
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83 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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84
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
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85 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: 198
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86 "writev() not ready");
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
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87
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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88 } else {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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89 wev->error = 1;
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
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90 ngx_connection_error(c, err, "writev() failed");
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
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91 return NGX_CHAIN_ERROR;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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92 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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93 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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94
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
diff changeset
95 sent = n > 0 ? n : 0;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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96
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
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97 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
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98 "writev: " OFF_T_FMT, sent);
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
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99
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
diff changeset
100 if (send - sprev == sent) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
101 complete = 1;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
102 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
103
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
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104 c->sent += sent;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
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105
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
diff changeset
106 for (cl = in; cl && sent > 0; cl = cl->next) {
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
107 if (ngx_buf_special(cl->buf)) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
108 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
109 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
110
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
111 if (sent == 0) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
112 break;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
113 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
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114
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: 290
diff changeset
115 size = cl->buf->last - cl->buf->pos;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
116
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
117 if (sent >= size) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
118 sent -= size;
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
119 cl->buf->pos = cl->buf->last;
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
120
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
121 continue;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
122 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
123
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
124 cl->buf->pos += sent;
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
125
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
126 break;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
127 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
128
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
129 if (eintr) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
130 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
131 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
132
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
133 if (!complete) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
134 wev->ready = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
135 return cl;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
136 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
137
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
138 if (send >= limit || cl == NULL) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
139 return cl;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
140 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
141
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
142 in = cl;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
143 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
144 }