Mercurial > hg > nginx

annotate src/os/unix/ngx_writev_chain.c @ 597:9262f520ce21 release-0.3.20

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.3.20-RELEASE import *) Bugfix: in SSI handling. *) Bugfix: the ngx_http_memcached_module did not support the keys in the "/usr?args" form.
author Igor Sysoev <igor@sysoev.ru>
date Wed, 11 Jan 2006 15:26:57 +0000
parents 284cc140593b
children f69d1aab6a0f
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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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
441
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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6
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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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
597
9262f520ce21 nginx-0.3.20-RELEASE import
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12 #if (IOV_MAX > 64)
9262f520ce21 nginx-0.3.20-RELEASE import
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13 #define NGX_IOVS 64
9262f520ce21 nginx-0.3.20-RELEASE import
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diff changeset
14 #else
9262f520ce21 nginx-0.3.20-RELEASE import
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15 #define NGX_IOVS IOV_MAX
9262f520ce21 nginx-0.3.20-RELEASE import
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16 #endif
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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17
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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18
501
d4ea69372b94 nginx-0.1.25-RELEASE import
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19 ngx_chain_t *
d4ea69372b94 nginx-0.1.25-RELEASE import
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20 ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
93
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21 {
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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22 u_char *prev;
461
a88a3e4e158f nginx-0.1.5-RELEASE import
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23 ssize_t n, size, sent;
473
8e8f3af115b5 nginx-0.1.11-RELEASE import
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24 off_t send, prev_send;
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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25 ngx_uint_t eintr, complete;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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26 ngx_err_t err;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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27 ngx_array_t vec;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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28 ngx_chain_t *cl;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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29 ngx_event_t *wev;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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30 struct iovec *iov, iovs[NGX_IOVS];
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31
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34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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32 wev = c->write;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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33
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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34 if (!wev->ready) {
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35 return in;
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36 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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37
469
2ff194b74f1e nginx-0.1.9-RELEASE import
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38 #if (NGX_HAVE_KQUEUE)
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39
587
284cc140593b nginx-0.3.15-RELEASE import
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40 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) {
537
c9ad0d9c7d59 nginx-0.1.43-RELEASE import
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41 (void) ngx_connection_error(c, wev->kq_errno,
c9ad0d9c7d59 nginx-0.1.43-RELEASE import
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42 "kevent() reported about an closed connection");
257
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43 wev->error = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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44 return NGX_CHAIN_ERROR;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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45 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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46
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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47 #endif
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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48
473
8e8f3af115b5 nginx-0.1.11-RELEASE import
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49 /* the maximum limit size is the maximum size_t value - the page size */
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50
477
ad1e9ebf93bb nginx-0.1.13-RELEASE import
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51 if (limit == 0 || limit > NGX_MAX_SIZE_T_VALUE - ngx_pagesize) {
ad1e9ebf93bb nginx-0.1.13-RELEASE import
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52 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize;
473
8e8f3af115b5 nginx-0.1.11-RELEASE import
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53 }
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54
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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55 send = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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56 complete = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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57
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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58 vec.elts = iovs;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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parents: 375
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59 vec.size = sizeof(struct iovec);
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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60 vec.nalloc = NGX_IOVS;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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61 vec.pool = c->pool;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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62
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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63 for ( ;; ) {
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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64 prev = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
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65 iov = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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66 eintr = 0;
473
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67 prev_send = send;
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68
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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69 vec.nelts = 0;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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70
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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71 /* 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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72
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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73 for (cl = in; cl && vec.nelts < IOV_MAX && send < limit; cl = cl->next)
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74 {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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75 if (ngx_buf_special(cl->buf)) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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76 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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77 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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78
461
a88a3e4e158f nginx-0.1.5-RELEASE import
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79 #if 1
a88a3e4e158f nginx-0.1.5-RELEASE import
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80 if (!ngx_buf_in_memory(cl->buf)) {
a88a3e4e158f nginx-0.1.5-RELEASE import
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81 ngx_debug_point();
a88a3e4e158f nginx-0.1.5-RELEASE import
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82 }
a88a3e4e158f nginx-0.1.5-RELEASE import
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83 #endif
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84
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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85 size = cl->buf->last - cl->buf->pos;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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86
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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87 if (send + size > limit) {
561
e48ebafc6939 nginx-0.3.2-RELEASE import
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parents: 555
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88 size = (ssize_t) (limit - send);
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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89 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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90
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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parents: 290
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91 if (prev == cl->buf->pos) {
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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92 iov->iov_len += size;
93
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93
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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94 } else {
501
d4ea69372b94 nginx-0.1.25-RELEASE import
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95 iov = ngx_array_push(&vec);
d4ea69372b94 nginx-0.1.25-RELEASE import
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diff changeset
96 if (iov == NULL) {
429
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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97 return NGX_CHAIN_ERROR;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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diff changeset
98 }
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import
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diff changeset
99
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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100 iov->iov_base = (void *) cl->buf->pos;
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
diff changeset
101 iov->iov_len = size;
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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diff changeset
102 }
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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103
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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diff changeset
104 prev = cl->buf->pos + size;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
diff changeset
105 send += size;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
diff changeset
106 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
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107
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
diff changeset
108 n = writev(c->fd, vec.elts, vec.nelts);
93
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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parents: 195
diff changeset
110 if (n == -1) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
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parents: 195
diff changeset
111 err = ngx_errno;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents:
diff changeset
112
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
diff changeset
113 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
diff changeset
114 if (err == NGX_EINTR) {
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
115 eintr = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
diff changeset
116 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
diff changeset
117
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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parents: 198
diff changeset
118 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
diff changeset
119 "writev() not ready");
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
120
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
121 } else {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
122 wev->error = 1;
537
c9ad0d9c7d59 nginx-0.1.43-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
123 (void) ngx_connection_error(c, err, "writev() failed");
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
124 return NGX_CHAIN_ERROR;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
125 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
126 }
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 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
129
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
130 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
131
473
8e8f3af115b5 nginx-0.1.11-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
132 if (send - prev_send == sent) {
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
133 complete = 1;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
134 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
135
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
136 c->sent += sent;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
137
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
138 for (cl = in; cl; cl = cl->next) {
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
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 (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
141 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
142 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
143
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
144 if (sent == 0) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
145 break;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
146 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
147
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
148 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
149
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
150 if (sent >= size) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
151 sent -= size;
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
152 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
153
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
154 continue;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
155 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
157 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
158
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
159 break;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
162 if (eintr) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
163 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
164 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
165
362
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
166 if (!complete) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
167 wev->ready = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
168 return cl;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
169 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
170
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
171 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
172 return cl;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
173 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
174
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
175 in = cl;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
176 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
177 }