Mercurial > hg > nginx-vendor-1-0
annotate src/core/ngx_spinlock.c @ 18:6f8b0dc0f8dd NGINX_0_1_9
nginx 0.1.9
*) Bugfix: the proxied request was sent without arguments if the
request contains "//", "/./", "/../" or "%XX".
*) Bugfix: the large compressed responses may be transferred not
completely.
*) Bugfix: the files bigger than 2G was not transferred on Linux that
does not support sendfile64().
*) Bugfix: while the build configuration on Linux the
--with-poll_module parameter was required; bug appeared in 0.1.8.
| author | Igor Sysoev <http://sysoev.ru> |
|---|---|
| date | Thu, 25 Nov 2004 00:00:00 +0300 |
| parents | f0b350454894 |
| children | 41ccba1aba45 |
| 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 | |
| 11 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin) | |
| 12 { | |
| 13 | |
| 14 #if (NGX_HAVE_ATOMIC_OPS) | |
| 15 | |
| 16 ngx_uint_t tries; | |
| 17 | |
| 18 tries = 0; | |
| 19 | |
| 20 for ( ;; ) { | |
| 21 | |
| 22 if (*lock) { | |
| 23 if (ngx_ncpu > 1 && tries++ < spin) { | |
| 24 continue; | |
| 25 } | |
| 26 | |
| 27 ngx_sched_yield(); | |
| 28 | |
| 29 tries = 0; | |
| 30 | |
| 31 } else { | |
| 32 if (ngx_atomic_cmp_set(lock, 0, 1)) { | |
| 33 return; | |
| 34 } | |
| 35 } | |
| 36 } | |
| 37 | |
| 38 #else | |
| 39 | |
| 40 #if (NGX_THREADS) | |
| 41 | |
| 42 #error ngx_spinlock() or ngx_atomic_cmp_set() are not defined ! | |
| 43 | |
| 44 #endif | |
| 45 | |
| 46 #endif | |
| 47 | |
| 48 } |