Mercurial > hg > nginx

annotate src/os/unix/ngx_writev_chain.c @ 290:87e73f067470

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.2-2004-03-16-10:10:12 import
author Igor Sysoev <igor@sysoev.ru>
date Tue, 16 Mar 2004 07:10:12 +0000
parents 70e1c7d2b83d
children 6bdf858bff8c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 #include <ngx_config.h>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
3 #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
4 #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
5
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
6
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7 ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in)
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8 {
290
87e73f067470 nginx-0.0.2-2004-03-16-10:10:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 257
diff changeset
9 u_char *prev;
103
6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
10 ssize_t n, size;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11 off_t sent;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
12 struct iovec *iov;
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
13 ngx_int_t eintr;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
14 ngx_err_t err;
170
c42be4185301 nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 144
diff changeset
15 ngx_array_t io;
c42be4185301 nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 144
diff changeset
16 ngx_chain_t *cl;
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
17 ngx_event_t *wev;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
18
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
19 wev = c->write;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
20
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
21 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
22 return in;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
diff changeset
23 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
diff changeset
24
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
25 #if (HAVE_KQUEUE)
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
26
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
27 if ((ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) && wev->kq_eof) {
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
28 ngx_log_error(NGX_LOG_INFO, c->log, wev->kq_errno,
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
29 "kevent() reported about an closed connection");
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
30
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
31 wev->error = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
32 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
33 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
34
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
35 #endif
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
36
170
c42be4185301 nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 144
diff changeset
37 ngx_init_array(io, c->pool, 10, sizeof(struct iovec), NGX_CHAIN_ERROR);
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
38
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
39 do {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
40 prev = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
41 iov = NULL;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
42 eintr = 0;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
43
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
44 /* create the iovec and coalesce the neighbouring hunks */
184
1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents: 170
diff changeset
45
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
46 for (cl = in; cl; cl = cl->next) {
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
47
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
48 if (prev == cl->hunk->pos) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
49 iov->iov_len += cl->hunk->last - cl->hunk->pos;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
50 prev = cl->hunk->last;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
51
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
52 } else {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
53 ngx_test_null(iov, ngx_push_array(&io), NGX_CHAIN_ERROR);
290
87e73f067470 nginx-0.0.2-2004-03-16-10:10:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 257
diff changeset
54 iov->iov_base = (void *) cl->hunk->pos;
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
55 iov->iov_len = cl->hunk->last - cl->hunk->pos;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
56 prev = cl->hunk->last;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
57 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
58 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
59
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
60 n = writev(c->fd, io.elts, io.nelts);
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
61
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
62 if (n == -1) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
63 err = ngx_errno;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
64
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
65 if (err == NGX_EAGAIN || err == NGX_EINTR) {
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
66 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
67 eintr = 1;
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
68 }
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
69
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
70 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
71 "writev() not ready");
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
72
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
73 } else {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
74 wev->error = 1;
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
75 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
76 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
77 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
78 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
79
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
80 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
81
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
82 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 198
diff changeset
83 "writev: " OFF_T_FMT, sent);
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
84
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
85 c->sent += sent;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
86
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
87 for (cl = in; cl && sent > 0; cl = cl->next) {
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
88
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
89 size = cl->hunk->last - cl->hunk->pos;
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 if (sent >= size) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
92 sent -= size;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
93
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
94 if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
95 cl->hunk->pos = cl->hunk->last;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
96 }
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
97
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
98 continue;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
99 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
100
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
101 if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
102 cl->hunk->pos += sent;
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
103 }
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
104
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
105 break;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
106 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
107
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
108 } while (eintr);
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
109
198
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
110 if (cl) {
34995c5ec6c4 nginx-0.0.1-2003-11-27-22:01:37 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
111 wev->ready = 0;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
113
170
c42be4185301 nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 144
diff changeset
114 return cl;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
115 }