Mercurial > hg > nginx

annotate src/os/unix/ngx_writev_chain.c @ 429:694cd6cdb714

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.11-2004-09-17-20:07:35 import
author Igor Sysoev <igor@sysoev.ru>
date Fri, 17 Sep 2004 16:07:35 +0000
parents 744ccb59062d
children da8c5707af39
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>
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1
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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2 #include <ngx_config.h>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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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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4 #include <ngx_event.h>
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5
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6
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694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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7 #define NGX_IOVS 8
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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8
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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9
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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10 ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
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11 {
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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12 u_char *prev;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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13 ssize_t n, size;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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14 off_t send, sprev, sent;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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15 ngx_uint_t eintr, complete;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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16 ngx_err_t err;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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17 ngx_array_t vec;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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18 ngx_chain_t *cl;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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19 ngx_event_t *wev;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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20 struct iovec *iov, iovs[NGX_IOVS];
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21
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34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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22 wev = c->write;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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23
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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24 if (!wev->ready) {
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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25 return in;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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26 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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27
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70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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28 #if (HAVE_KQUEUE)
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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29
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744ccb59062d nginx-0.0.7-2004-07-02-19:54:34 import
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30 if ((ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) && wev->pending_eof) {
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31 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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32 "kevent() reported about an closed connection");
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33
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34 wev->error = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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35 return NGX_CHAIN_ERROR;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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36 }
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37
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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38 #endif
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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39
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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40 send = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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41 complete = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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42
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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43 vec.elts = iovs;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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44 vec.size = sizeof(struct iovec);
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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45 vec.nalloc = NGX_IOVS;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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parents: 375
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46 vec.pool = c->pool;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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47
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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48 for ( ;; ) {
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34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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49 prev = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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50 iov = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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51 eintr = 0;
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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52 sprev = send;
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53
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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54 vec.nelts = 0;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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55
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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56 /* create the iovec and coalesce the neighbouring bufs */
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57
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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58 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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59 {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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60 if (ngx_buf_special(cl->buf)) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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61 continue;
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62 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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63
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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64 size = cl->buf->last - cl->buf->pos;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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65
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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66 if (send + size > limit) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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67 size = limit - send;
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68 }
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69
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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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70 if (prev == cl->buf->pos) {
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71 iov->iov_len += size;
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72
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73 } else {
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74 if (!(iov = ngx_array_push(&vec))) {
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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75 return NGX_CHAIN_ERROR;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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76 }
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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77
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78 iov->iov_base = (void *) cl->buf->pos;
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79 iov->iov_len = size;
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80 }
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81
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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82 prev = cl->buf->pos + size;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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83 send += size;
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84 }
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85
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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86 n = writev(c->fd, vec.elts, vec.nelts);
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87
198
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88 if (n == -1) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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89 err = ngx_errno;
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90
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91 if (err == NGX_EAGAIN || err == NGX_EINTR) {
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92 if (err == NGX_EINTR) {
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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93 eintr = 1;
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94 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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95
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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96 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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97 "writev() not ready");
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98
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99 } else {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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100 wev->error = 1;
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101 ngx_connection_error(c, err, "writev() failed");
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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102 return NGX_CHAIN_ERROR;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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103 }
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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104 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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105
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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106 sent = n > 0 ? n : 0;
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107
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70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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108 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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109 "writev: " OFF_T_FMT, sent);
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110
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111 if (send - sprev == sent) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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112 complete = 1;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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113 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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114
198
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115 c->sent += sent;
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116
198
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parents: 195
diff changeset
117 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
118 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
119 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
120 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
121
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
122 if (sent == 0) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
123 break;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
124 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
125
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
126 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
127
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
128 if (sent >= size) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
129 sent -= size;
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
130 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
131
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
132 continue;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
133 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
134
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
135 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
136
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
137 break;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
138 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
139
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
140 if (eintr) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
141 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
142 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
143
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
144 if (!complete) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
145 wev->ready = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
146 return cl;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
147 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
148
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
149 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
150 return cl;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
151 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
152
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
153 in = cl;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
155 }