Mercurial > hg > nginx

annotate src/os/unix/ngx_writev_chain.c @ 461:a88a3e4e158f release-0.1.5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.1.5-RELEASE import *) Bugfix: on Solaris and Linux there may be too many "recvmsg() returned not enough data" alerts. *) Bugfix: there were the "writev() failed (22: Invalid argument)" errors on Solaris in proxy mode without sendfile. On other platforms that do not support sendfile at all the process got caught in an endless loop. *) Bugfix: segmentation fault on Solaris in proxy mode and using sendfile. *) Bugfix: segmentation fault on Solaris. *) Bugfix: on-line upgrade did not work on Linux. *) Bugfix: the ngx_http_autoindex_module module did not escape the spaces, the quotes, and the percent signs in the directory listing. *) Change: the decrease of the copy operations. *) Feature: the userid_p3p directive.
author Igor Sysoev <igor@sysoev.ru>
date Thu, 11 Nov 2004 14:07:14 +0000
parents 295d97d70c69
children 2ff194b74f1e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 429
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2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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4 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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5
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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7 #include <ngx_config.h>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
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8 #include <ngx_core.h>
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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9 #include <ngx_event.h>
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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11
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a88a3e4e158f nginx-0.1.5-RELEASE import
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diff changeset
12 #define NGX_IOVS 16
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694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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14
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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15 ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
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16 {
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694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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17 u_char *prev;
461
a88a3e4e158f nginx-0.1.5-RELEASE import
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18 ssize_t n, size, sent;
a88a3e4e158f nginx-0.1.5-RELEASE import
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19 off_t send, sprev;
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694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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20 ngx_uint_t eintr, complete;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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21 ngx_err_t err;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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22 ngx_array_t vec;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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23 ngx_chain_t *cl;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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24 ngx_event_t *wev;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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25 struct iovec *iov, iovs[NGX_IOVS];
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26
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34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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27 wev = c->write;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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28
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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29 if (!wev->ready) {
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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30 return in;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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31 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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32
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70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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33 #if (HAVE_KQUEUE)
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34
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295d97d70c69 nginx-0.1.2-RELEASE import
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35 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) {
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36 ngx_log_error(NGX_LOG_INFO, c->log, wev->kq_errno,
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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37 "kevent() reported about an closed connection");
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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38
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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39 wev->error = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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40 return NGX_CHAIN_ERROR;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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41 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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42
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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43 #endif
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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44
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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45 send = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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46 complete = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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47
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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48 vec.elts = iovs;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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49 vec.size = sizeof(struct iovec);
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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parents: 375
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50 vec.nalloc = NGX_IOVS;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
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51 vec.pool = c->pool;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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52
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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53 for ( ;; ) {
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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54 prev = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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55 iov = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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56 eintr = 0;
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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57 sprev = send;
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58
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694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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59 vec.nelts = 0;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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60
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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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61 /* create the iovec and coalesce the neighbouring bufs */
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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63 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
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64 {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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65 if (ngx_buf_special(cl->buf)) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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66 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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67 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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68
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69 #if 1
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70 if (!ngx_buf_in_memory(cl->buf)) {
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71 ngx_debug_point();
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72 }
a88a3e4e158f nginx-0.1.5-RELEASE import
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73 #endif
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74
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75 size = cl->buf->last - cl->buf->pos;
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76
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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77 if (send + size > limit) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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78 size = limit - send;
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79 }
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parents:
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80
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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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81 if (prev == cl->buf->pos) {
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82 iov->iov_len += size;
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83
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84 } else {
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694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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85 if (!(iov = ngx_array_push(&vec))) {
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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86 return NGX_CHAIN_ERROR;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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87 }
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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88
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89 iov->iov_base = (void *) cl->buf->pos;
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90 iov->iov_len = size;
198
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91 }
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92
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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93 prev = cl->buf->pos + size;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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94 send += size;
93
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95 }
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96
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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97 n = writev(c->fd, vec.elts, vec.nelts);
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98
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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99 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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100 err = ngx_errno;
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101
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102 if (err == NGX_EAGAIN || err == NGX_EINTR) {
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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103 if (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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104 eintr = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
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105 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
diff changeset
106
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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107 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
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108 "writev() not ready");
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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109
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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110 } else {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
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111 wev->error = 1;
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
diff changeset
112 ngx_connection_error(c, err, "writev() failed");
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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113 return NGX_CHAIN_ERROR;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
diff changeset
114 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
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115 }
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 sent = n > 0 ? n : 0;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
118
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
119 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "writev: %z", sent);
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
120
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
121 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
122 complete = 1;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
123 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
124
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
125 c->sent += sent;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
126
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
127 for (cl = in; cl; cl = cl->next) {
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
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 (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
130 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
131 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
132
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
133 if (sent == 0) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
134 break;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
135 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136
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
137 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
138
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
139 if (sent >= size) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
140 sent -= size;
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
141 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
142
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
143 continue;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
144 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
145
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
146 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
147
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
148 break;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
150
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
151 if (eintr) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
152 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
153 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
155 if (!complete) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
156 wev->ready = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
157 return cl;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
158 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
159
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
160 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
161 return cl;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
162 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
163
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
164 in = cl;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
165 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166 }