nginx: src/os/unix/ngx_writev

annotate src/os/unix/ngx_writev_chain.c @ 5914:4dd67e5d958e

Refactored ngx_solaris_sendfilev_chain(). Though ngx_solaris_sendfilev_chain() shouldn't suffer from the problem mentioned in d1bde5c3c5d2 since currently IOV_MAX on Solaris is 16, but this follows the change from 3d5717550371 in order to make the code look similar to other systems and potentially eliminates the problem in the future.

author	Valentin Bartenev <vbart@nginx.com>
date	Wed, 19 Nov 2014 21:17:11 +0300
parents	8e903522c17a
children	2c64b69daec5

rev	line source
441 da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 429 diff changeset	1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 429 diff changeset	2 /*
444 42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright Igor Sysoev <igor@sysoev.ru> parents: 441 diff changeset	3 * Copyright (C) Igor Sysoev
4412 d620f497c50f Copyright updated. Maxim Konovalov <maxim@nginx.com> parents: 3063 diff changeset	4 * Copyright (C) Nginx, Inc.
441 da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 429 diff changeset	5 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 429 diff changeset	6
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	7
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	8 #include <ngx_config.h>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	9 #include <ngx_core.h>
144 ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import Igor Sysoev <igor@sysoev.ru> parents: 103 diff changeset	10 #include <ngx_event.h>
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	11
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	12
501 d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 477 diff changeset	13 ngx_chain_t *
d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 477 diff changeset	14 ngx_writev_chain(ngx_connection_t c, ngx_chain_t in, off_t limit)
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	15 {
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	16 ssize_t n, sent;
473 8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	17 off_t send, prev_send;
5851 150df089fe47 Removed the "complete" variable from various send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5850 diff changeset	18 ngx_uint_t eintr;
429 694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	19 ngx_err_t err;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	20 ngx_chain_t *cl;
694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	21 ngx_event_t *wev;
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	22 ngx_iovec_t vec;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	23 struct iovec iovs[NGX_IOVS_PREALLOCATE];
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	24
198 34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	25 wev = c->write;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	26
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	27 if (!wev->ready) {
144 ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import Igor Sysoev <igor@sysoev.ru> parents: 103 diff changeset	28 return in;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import Igor Sysoev <igor@sysoev.ru> parents: 103 diff changeset	29 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import Igor Sysoev <igor@sysoev.ru> parents: 103 diff changeset	30
469 2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	31 #if (NGX_HAVE_KQUEUE)
257 70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	32
587 284cc140593b nginx-0.3.15-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 581 diff changeset	33 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) {
537 c9ad0d9c7d59 nginx-0.1.43-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	34 (void) ngx_connection_error(c, wev->kq_errno,
c9ad0d9c7d59 nginx-0.1.43-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	35 "kevent() reported about an closed connection");
257 70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	36 wev->error = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	37 return NGX_CHAIN_ERROR;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	38 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	39
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	40 #endif
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	41
473 8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	42 /* the maximum limit size is the maximum size_t value - the page size */
8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	43
1354 f69d1aab6a0f make 64-bit ngx_int_t on 64-bit platforms Igor Sysoev <igor@sysoev.ru> parents: 597 diff changeset	44 if (limit == 0 \|\| limit > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) {
477 ad1e9ebf93bb nginx-0.1.13-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 473 diff changeset	45 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize;
473 8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	46 }
8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	47
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	48 send = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	49
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	50 vec.iovs = iovs;
5854 b63e829621ab Generalized definitions of the number of preallocated iovec's. Valentin Bartenev <vbart@nginx.com> parents: 5853 diff changeset	51 vec.nalloc = NGX_IOVS_PREALLOCATE;
429 694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	52
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	53 for ( ;; ) {
198 34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	54 eintr = 0;
473 8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	55 prev_send = send;
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	56
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	57 /* create the iovec and coalesce the neighbouring bufs */
184 1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import Igor Sysoev <igor@sysoev.ru> parents: 170 diff changeset	58
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	59 cl = ngx_output_chain_to_iovec(&vec, in, limit - send, c->log);
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	60
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	61 if (cl == NGX_CHAIN_ERROR) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	62 return NGX_CHAIN_ERROR;
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	63 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	64
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	65 if (cl && cl->buf->in_file) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	66 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	67 "file buf in writev "
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	68 "t:%d r:%d f:%d %p %p-%p %p %O-%O",
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	69 cl->buf->temporary,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	70 cl->buf->recycled,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	71 cl->buf->in_file,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	72 cl->buf->start,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	73 cl->buf->pos,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	74 cl->buf->last,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	75 cl->buf->file,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	76 cl->buf->file_pos,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	77 cl->buf->file_last);
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	78
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	79 ngx_debug_point();
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	80
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	81 return NGX_CHAIN_ERROR;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	82 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	83
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	84 send += vec.size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	85
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	86 n = writev(c->fd, vec.iovs, vec.count);
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	87
198 34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	88 if (n == -1) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	89 err = ngx_errno;
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	90
3063 6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	91 switch (err) {
6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	92 case NGX_EAGAIN:
6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	93 break;
257 70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	94
3063 6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	95 case NGX_EINTR:
6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	96 eintr = 1;
6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	97 break;
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	98
3063 6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	99 default:
198 34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	100 wev->error = 1;
537 c9ad0d9c7d59 nginx-0.1.43-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	101 (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	102 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	103 }
3063 6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	104
6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	105 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
6f6d7ea70805 refactor EAGAIN/EINTR processing Igor Sysoev <igor@sysoev.ru> parents: 1354 diff changeset	106 "writev() not ready");
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	107 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	108
198 34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	109 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	110
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 455 diff changeset	111 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	112
198 34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	113 c->sent += sent;
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	114
5912 de68ed551bfb Renamed ngx_handle_sent_chain() to ngx_chain_update_sent(). Valentin Bartenev <vbart@nginx.com> parents: 5868 diff changeset	115 in = ngx_chain_update_sent(in, sent);
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	116
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	117 if (eintr) {
5868 6bbad2e73245 Fixed counting of sent bytes in the send chain functions on EINTR. Valentin Bartenev <vbart@nginx.com> parents: 5854 diff changeset	118 send = prev_send;
362 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 }
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	121
5851 150df089fe47 Removed the "complete" variable from various send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5850 diff changeset	122 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	123 wev->ready = 0;
5853 a6e83ac70af9 Reduced difference between the send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5851 diff changeset	124 return in;
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	125 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	126
5853 a6e83ac70af9 Reduced difference between the send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5851 diff changeset	127 if (send >= limit \|\| in == NULL) {
a6e83ac70af9 Reduced difference between the send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5851 diff changeset	128 return in;
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	129 }
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	130 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	131 }
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	132
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	133
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	134 ngx_chain_t *
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	135 ngx_output_chain_to_iovec(ngx_iovec_t vec, ngx_chain_t in, size_t limit,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	136 ngx_log_t *log)
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	137 {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	138 size_t total, size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	139 u_char *prev;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	140 ngx_uint_t n;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	141 struct iovec *iov;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	142
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	143 iov = NULL;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	144 prev = NULL;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	145 total = 0;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	146 n = 0;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	147
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	148 for ( /* void */ ; in && total < limit; in = in->next) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	149
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	150 if (ngx_buf_special(in->buf)) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	151 continue;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	152 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	153
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	154 if (in->buf->in_file) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	155 break;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	156 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	157
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	158 if (!ngx_buf_in_memory(in->buf)) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	159 ngx_log_error(NGX_LOG_ALERT, log, 0,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	160 "bad buf in output chain "
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	161 "t:%d r:%d f:%d %p %p-%p %p %O-%O",
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	162 in->buf->temporary,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	163 in->buf->recycled,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	164 in->buf->in_file,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	165 in->buf->start,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	166 in->buf->pos,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	167 in->buf->last,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	168 in->buf->file,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	169 in->buf->file_pos,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	170 in->buf->file_last);
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	171
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	172 ngx_debug_point();
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	173
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	174 return NGX_CHAIN_ERROR;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	175 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	176
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	177 size = in->buf->last - in->buf->pos;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	178
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	179 if (size > limit - total) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	180 size = limit - total;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	181 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	182
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	183 if (prev == in->buf->pos) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	184 iov->iov_len += size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	185
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	186 } else {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	187 if (n == vec->nalloc) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	188 break;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	189 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	190
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	191 iov = &vec->iovs[n++];
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	192
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	193 iov->iov_base = (void *) in->buf->pos;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	194 iov->iov_len = size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	195 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	196
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	197 prev = in->buf->pos + size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	198 total += size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	199 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	200
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	201 vec->count = n;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	202 vec->size = total;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	203
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	204 return in;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	205 }

Mercurial > hg > nginx

annotate src/os/unix/ngx_writev_chain.c @ 5914:4dd67e5d958e