nginx: src/os/unix/ngx_writev

annotate src/os/unix/ngx_writev_chain.c @ 7670:ccb5ff87ab3e

Cache: introduced min_free cache clearing. Clearing cache based on free space left on a file system is expected to allow better disk utilization in some cases, notably when disk space might be also used for something other than nginx cache (including nginx own temporary files) and while loading cache (when cache size might be inaccurate for a while, effectively disabling max_size cache clearing). Based on a patch by Adam Bambuch.

author	Maxim Dounin <mdounin@mdounin.ru>
date	Mon, 22 Jun 2020 18:03:00 +0300
parents	2c64b69daec5
children

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;
429 694cd6cdb714 nginx-0.0.11-2004-09-17-20:07:35 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	18 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	19 ngx_event_t *wev;
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	20 ngx_iovec_t vec;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	21 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	22
198 34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	23 wev = c->write;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	24
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	25 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	26 return in;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import Igor Sysoev <igor@sysoev.ru> parents: 103 diff changeset	27 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import Igor Sysoev <igor@sysoev.ru> parents: 103 diff changeset	28
469 2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	29 #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	30
587 284cc140593b nginx-0.3.15-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 581 diff changeset	31 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	32 (void) ngx_connection_error(c, wev->kq_errno,
c9ad0d9c7d59 nginx-0.1.43-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	33 "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	34 wev->error = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	35 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	36 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	37
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	38 #endif
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	39
473 8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	40 /* 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	41
1354 f69d1aab6a0f make 64-bit ngx_int_t on 64-bit platforms Igor Sysoev <igor@sysoev.ru> parents: 597 diff changeset	42 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	43 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	44 }
8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	45
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	46 send = 0;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	47
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	48 vec.iovs = iovs;
5854 b63e829621ab Generalized definitions of the number of preallocated iovec's. Valentin Bartenev <vbart@nginx.com> parents: 5853 diff changeset	49 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	50
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	51 for ( ;; ) {
473 8e8f3af115b5 nginx-0.1.11-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	52 prev_send = send;
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	53
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	54 /* 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	55
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	56 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	57
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	58 if (cl == NGX_CHAIN_ERROR) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	59 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	60 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	61
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	62 if (cl && cl->buf->in_file) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	63 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	64 "file buf in writev "
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	65 "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	66 cl->buf->temporary,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	67 cl->buf->recycled,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	68 cl->buf->in_file,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	69 cl->buf->start,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	70 cl->buf->pos,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	71 cl->buf->last,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	72 cl->buf->file,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	73 cl->buf->file_pos,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	74 cl->buf->file_last);
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	75
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	76 ngx_debug_point();
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	77
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	78 return NGX_CHAIN_ERROR;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	79 }
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 send += vec.size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	82
5917 2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	83 n = ngx_writev(c, &vec);
257 70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import Igor Sysoev <igor@sysoev.ru> parents: 198 diff changeset	84
5917 2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	85 if (n == NGX_ERROR) {
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	86 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	87 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	88
5917 2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	89 sent = (n == NGX_AGAIN) ? 0 : n;
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	90
198 34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import Igor Sysoev <igor@sysoev.ru> parents: 195 diff changeset	91 c->sent += sent;
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	92
5912 de68ed551bfb Renamed ngx_handle_sent_chain() to ngx_chain_update_sent(). Valentin Bartenev <vbart@nginx.com> parents: 5868 diff changeset	93 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	94
5851 150df089fe47 Removed the "complete" variable from various send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5850 diff changeset	95 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	96 wev->ready = 0;
5853 a6e83ac70af9 Reduced difference between the send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5851 diff changeset	97 return in;
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	98 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	99
5853 a6e83ac70af9 Reduced difference between the send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5851 diff changeset	100 if (send >= limit \|\| in == NULL) {
a6e83ac70af9 Reduced difference between the send chain functions. Valentin Bartenev <vbart@nginx.com> parents: 5851 diff changeset	101 return in;
362 7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import Igor Sysoev <igor@sysoev.ru> parents: 343 diff changeset	102 }
93 738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	103 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	104 }
5913 8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	105
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	106
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	107 ngx_chain_t *
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	108 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	109 ngx_log_t *log)
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	110 {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	111 size_t total, size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	112 u_char *prev;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	113 ngx_uint_t n;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	114 struct iovec *iov;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	115
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	116 iov = NULL;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	117 prev = NULL;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	118 total = 0;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	119 n = 0;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	120
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	121 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	122
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	123 if (ngx_buf_special(in->buf)) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	124 continue;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	125 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	126
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	127 if (in->buf->in_file) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	128 break;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	129 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	130
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	131 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	132 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	133 "bad buf in output chain "
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	134 "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	135 in->buf->temporary,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	136 in->buf->recycled,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	137 in->buf->in_file,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	138 in->buf->start,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	139 in->buf->pos,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	140 in->buf->last,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	141 in->buf->file,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	142 in->buf->file_pos,
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	143 in->buf->file_last);
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	144
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	145 ngx_debug_point();
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	146
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	147 return NGX_CHAIN_ERROR;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	148 }
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 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	151
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	152 if (size > limit - total) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	153 size = limit - total;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	154 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	155
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	156 if (prev == in->buf->pos) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	157 iov->iov_len += size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	158
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	159 } else {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	160 if (n == vec->nalloc) {
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	161 break;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	162 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	163
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	164 iov = &vec->iovs[n++];
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	165
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	166 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	167 iov->iov_len = size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	168 }
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	169
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	170 prev = in->buf->pos + size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	171 total += size;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	172 }
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 vec->count = n;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	175 vec->size = total;
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 return in;
8e903522c17a Introduced the ngx_output_chain_to_iovec() function. Valentin Bartenev <vbart@nginx.com> parents: 5912 diff changeset	178 }
5917 2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	179
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	180
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	181 ssize_t
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	182 ngx_writev(ngx_connection_t c, ngx_iovec_t vec)
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	183 {
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	184 ssize_t n;
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	185 ngx_err_t err;
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	186
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	187 eintr:
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	188
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	189 n = writev(c->fd, vec->iovs, vec->count);
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	190
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	191 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	192 "writev: %z of %uz", n, vec->size);
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	193
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	194 if (n == -1) {
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	195 err = ngx_errno;
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	196
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	197 switch (err) {
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	198 case NGX_EAGAIN:
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	199 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	200 "writev() not ready");
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	201 return NGX_AGAIN;
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	202
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	203 case NGX_EINTR:
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	204 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	205 "writev() was interrupted");
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	206 goto eintr;
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	207
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	208 default:
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	209 c->write->error = 1;
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	210 ngx_connection_error(c, err, "writev() failed");
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	211 return NGX_ERROR;
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	212 }
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	213 }
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	214
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	215 return n;
2c64b69daec5 Moved writev() handling code to a separate function. Valentin Bartenev <vbart@nginx.com> parents: 5913 diff changeset	216 }

Mercurial > hg > nginx

annotate src/os/unix/ngx_writev_chain.c @ 7670:ccb5ff87ab3e