Mercurial > hg > nginx-vendor-1-0
annotate src/core/ngx_spinlock.c @ 644:ad25218fd14b NGINX_1_0_12
nginx 1.0.12
*) Feature: the "TLSv1.1" and "TLSv1.2" parameters of the
"ssl_protocols" directive.
*) Feature: the "if" SSI command supports captures in regular
expressions.
*) Bugfix: the "if" SSI command did not work inside the "block" command.
*) Bugfix: in AIO error handling on FreeBSD.
*) Bugfix: in the OpenSSL library initialization.
*) Bugfix: the "worker_cpu_affinity" directive might not work.
*) Bugfix: the "limit_conn_log_level" and "limit_req_log_level"
directives might not work.
*) Bugfix: the "read_ahead" directive might not work combined with
"try_files" and "open_file_cache".
*) Bugfix: the "proxy_cache_use_stale" directive with "error" parameter
did not return answer from cache if there were no live upstreams.
*) Bugfix: a segmentation fault might occur in a worker process if small
time was used in the "inactive" parameter of the "proxy_cache_path"
directive.
*) Bugfix: responses from cache might hang.
*) Bugfix: in error handling while connecting to a backend.
Thanks to Piotr Sikora.
*) Bugfix: in the "epoll" event method.
Thanks to Yichun Zhang.
*) Bugfix: the $sent_http_cache_control variable might contain a wrong
value if the "expires" directive was used.
Thanks to Yichun Zhang.
*) Bugfix: the "limit_rate" directive did not allow to use full
throughput, even if limit value was very high.
*) Bugfix: the "sendfile_max_chunk" directive did not work, if the
"limit_rate" directive was used.
*) Bugfix: nginx could not be built on Solaris; the bug had appeared in
1.0.11.
*) Bugfix: in the ngx_http_scgi_module.
*) Bugfix: in the ngx_http_mp4_module.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 06 Feb 2012 00:00:00 +0400 |
parents | 73e8476f9142 |
children |
rev | line source |
---|---|
0 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
644 | 4 * Copyright (C) Nginx, Inc. |
0 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 | |
11 | |
112 | 12 void |
160 | 13 ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin) |
0 | 14 { |
15 | |
16 #if (NGX_HAVE_ATOMIC_OPS) | |
17 | |
160 | 18 ngx_uint_t i, n; |
0 | 19 |
20 for ( ;; ) { | |
21 | |
160 | 22 if (*lock == 0 && ngx_atomic_cmp_set(lock, 0, value)) { |
23 return; | |
24 } | |
25 | |
26 if (ngx_ncpu > 1) { | |
27 | |
28 for (n = 1; n < spin; n <<= 1) { | |
0 | 29 |
160 | 30 for (i = 0; i < n; i++) { |
31 ngx_cpu_pause(); | |
32 } | |
0 | 33 |
160 | 34 if (*lock == 0 && ngx_atomic_cmp_set(lock, 0, value)) { |
35 return; | |
36 } | |
0 | 37 } |
38 } | |
160 | 39 |
40 ngx_sched_yield(); | |
0 | 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 } |