Mercurial > hg > nginx-vendor-current
annotate src/core/ngx_spinlock.c @ 122:d25a1d6034f1 NGINX_0_3_8
nginx 0.3.8
*) Security: nginx now checks URI got from a backend in
"X-Accel-Redirect" header line or in SSI file for the "/../" paths
and zeroes.
*) Change: nginx now does not treat the empty user name in the
"Authorization" header line as valid one.
*) Feature: the "ssl_session_timeout" directives of the
ngx_http_ssl_module and ngx_imap_ssl_module.
*) Feature: the "auth_http_header" directive of the
ngx_imap_auth_http_module.
*) Feature: the "add_header" directive.
*) Feature: the ngx_http_realip_module.
*) Feature: the new variables to use in the "log_format" directive:
$bytes_sent, $apache_bytes_sent, $status, $time_gmt, $uri,
$request_time, $request_length, $upstream_status,
$upstream_response_time, $gzip_ratio, $uid_got, $uid_set,
$connection, $pipe, and $msec. The parameters in the "%name" form
will be canceled soon.
*) Change: now the false variable values in the "if" directive are the
empty string "" and string starting with "0".
*) Bugfix: while using proxied or FastCGI-server nginx may leave
connections and temporary files with client requests in open state.
*) Bugfix: the worker processes did not flush the buffered logs on
graceful exit.
*) Bugfix: if the request URI was changes by the "rewrite" directive
and the request was proxied in location given by regular expression,
then the incorrect request was transferred to backend; bug appeared
in 0.2.6.
*) Bugfix: the "expires" directive did not remove the previous
"Expires" header.
*) Bugfix: nginx may stop to accept requests if the "rtsig" method and
several worker processes were used.
*) Bugfix: the "\"" and "\'" escape symbols were incorrectly handled in
SSI commands.
*) Bugfix: if the response was ended just after the SSI command and
gzipping was used, then the response did not transferred complete or
did not transferred at all.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Wed, 09 Nov 2005 00:00:00 +0300 |
parents | 408f195b3482 |
children | 73e8476f9142 |
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 | |
10 | |
42 | 11 /* |
12 * TODO: the P4 optimized assembler version with the "pause" operation | |
13 */ | |
14 | |
112 | 15 void |
16 ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin) | |
0 | 17 { |
18 | |
19 #if (NGX_HAVE_ATOMIC_OPS) | |
20 | |
21 ngx_uint_t tries; | |
22 | |
23 tries = 0; | |
24 | |
25 for ( ;; ) { | |
26 | |
27 if (*lock) { | |
28 if (ngx_ncpu > 1 && tries++ < spin) { | |
29 continue; | |
30 } | |
31 | |
32 ngx_sched_yield(); | |
33 | |
34 tries = 0; | |
35 | |
36 } else { | |
37 if (ngx_atomic_cmp_set(lock, 0, 1)) { | |
38 return; | |
39 } | |
40 } | |
41 } | |
42 | |
43 #else | |
44 | |
45 #if (NGX_THREADS) | |
46 | |
47 #error ngx_spinlock() or ngx_atomic_cmp_set() are not defined ! | |
48 | |
49 #endif | |
50 | |
51 #endif | |
52 | |
53 } |