Mercurial > hg > nginx-vendor-current
annotate src/os/unix/ngx_aio_write_chain.c @ 92:45945fa8b8ba NGINX_0_2_0
nginx 0.2.0
*) The pid-file names used during online upgrade was changed and now is
not required a manual rename operation. The old master process adds
the ".oldbin" suffix to its pid-file and executes a new binary file.
The new master process creates usual pid-file without the ".newbin"
suffix. If the master process exits, then old master process renames
back its pid-file with the ".oldbin" suffix to the pid-file without
suffix.
*) Change: the "worker_connections" directive, new name of the
"connections" directive; now the directive specifies maximum number
of connections, but not maximum socket descriptor number.
*) Feature: SSL supports the session cache inside one worker process.
*) Feature: the "satisfy_any" directive.
*) Change: the ngx_http_access_module and ngx_http_auth_basic_module do
not run for subrequests.
*) Feature: the "worker_rlimit_nofile" and "worker_rlimit_sigpending"
directives.
*) Bugfix: if all backend using in load-balancing failed after one
error, then nginx did not try do connect to them during 60 seconds.
*) Bugfix: in IMAP/POP3 command argument parsing.
Thanks to Rob Mueller.
*) Bugfix: errors while using SSL in IMAP/POP3 proxy.
*) Bugfix: errors while using SSI and gzipping.
*) Bugfix: the "Expires" and "Cache-Control" header lines were omitted
from the 304 responses.
Thanks to Alexandr Kukushkin.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Fri, 23 Sep 2005 00:00:00 +0400 |
parents | 72eb30262aac |
children | df17fbafec8f |
rev | line source |
---|---|
0 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 #include <ngx_event.h> | |
10 #include <ngx_aio.h> | |
11 | |
12 | |
13 ngx_chain_t *ngx_aio_write_chain(ngx_connection_t *c, ngx_chain_t *in, | |
14 off_t limit) | |
15 { | |
16 u_char *buf, *prev; | |
17 off_t send, sent; | |
18 size_t len; | |
10 | 19 ssize_t n, size; |
0 | 20 ngx_chain_t *cl; |
21 | |
22 | 22 /* the maximum limit size is the maximum size_t value - the page size */ |
23 | |
26 | 24 if (limit == 0 || limit > NGX_MAX_SIZE_T_VALUE - ngx_pagesize) { |
25 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize; | |
22 | 26 } |
27 | |
0 | 28 send = 0; |
29 sent = 0; | |
30 cl = in; | |
31 | |
32 while (cl) { | |
33 | |
34 if (cl->buf->pos == cl->buf->last) { | |
35 cl = cl->next; | |
36 continue; | |
37 } | |
38 | |
39 /* we can post the single aio operation only */ | |
40 | |
41 if (!c->write->ready) { | |
42 return cl; | |
43 } | |
44 | |
45 buf = cl->buf->pos; | |
46 prev = buf; | |
47 len = 0; | |
48 | |
49 /* coalesce the neighbouring bufs */ | |
50 | |
51 while (cl && prev == cl->buf->pos && send < limit) { | |
52 if (ngx_buf_special(cl->buf)) { | |
53 continue; | |
54 } | |
55 | |
56 size = cl->buf->last - cl->buf->pos; | |
57 | |
58 if (send + size > limit) { | |
59 size = limit - send; | |
60 } | |
61 | |
62 len += size; | |
63 prev = cl->buf->pos + size; | |
64 send += size; | |
65 cl = cl->next; | |
66 } | |
67 | |
68 n = ngx_aio_write(c, buf, len); | |
69 | |
10 | 70 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_write: %z", n); |
0 | 71 |
72 if (n == NGX_ERROR) { | |
73 return NGX_CHAIN_ERROR; | |
74 } | |
75 | |
76 if (n > 0) { | |
77 sent += n; | |
78 c->sent += n; | |
79 } | |
80 | |
81 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
10 | 82 "aio_write sent: %O", c->sent); |
0 | 83 |
84 for (cl = in; cl; cl = cl->next) { | |
85 | |
86 if (sent >= cl->buf->last - cl->buf->pos) { | |
87 sent -= cl->buf->last - cl->buf->pos; | |
88 cl->buf->pos = cl->buf->last; | |
89 | |
90 continue; | |
91 } | |
92 | |
93 cl->buf->pos += sent; | |
94 | |
95 break; | |
96 } | |
97 } | |
98 | |
99 return cl; | |
100 } |