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| author | Igor Sysoev <igor@sysoev.ru> | 2004-06-30 15:30:41 +0000 |
|---|---|---|
| committer | Igor Sysoev <igor@sysoev.ru> | 2004-06-30 15:30:41 +0000 |
| commit | 078d1b2c2263690f2f6b7217b567eeeb525910d0 (patch) | |
| tree | dfb82cccd10c3dee8a500506f7692b0445200e5c /src/core/ngx_atomic.h | |
| parent | 0a94cfd2ae9ca87b4d988b5066f739a3034f3bff (diff) | |
| download | nginx-078d1b2c2263690f2f6b7217b567eeeb525910d0.tar.gz nginx-078d1b2c2263690f2f6b7217b567eeeb525910d0.tar.bz2 | |
nginx-0.0.7-2004-06-30-19:30:41 import
Diffstat (limited to 'src/core/ngx_atomic.h')
| -rw-r--r-- | src/core/ngx_atomic.h | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/src/core/ngx_atomic.h b/src/core/ngx_atomic.h deleted file mode 100644 index a149ad28b..000000000 --- a/src/core/ngx_atomic.h +++ /dev/null @@ -1,106 +0,0 @@ -#ifndef _NGX_ATOMIC_H_INCLUDED_ -#define _NGX_ATOMIC_H_INCLUDED_ - - -#include <ngx_config.h> -#include <ngx_core.h> - - -#if ( __i386__ || __amd64__ ) - -typedef volatile uint32_t ngx_atomic_t; - -#if (NGX_SMP) -#define NGX_SMP_LOCK "lock;" -#else -#define NGX_SMP_LOCK -#endif - - -static ngx_inline uint32_t ngx_atomic_inc(ngx_atomic_t *value) -{ - uint32_t old; - - __asm__ volatile ( - - NGX_SMP_LOCK - " xaddl %0, %2; " - " incl %0; " - - : "=q" (old) : "0" (1), "m" (*value)); - - return old; -} - - -static ngx_inline uint32_t ngx_atomic_dec(ngx_atomic_t *value) -{ - uint32_t old; - - __asm__ volatile ( - - NGX_SMP_LOCK - " xaddl %0, %1; " - " decl %0; " - - : "=q" (old) : "0" (-1), "m" (*value)); - - return old; -} - - -static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock, - ngx_atomic_t old, - ngx_atomic_t set) -{ - uint32_t res; - - __asm__ volatile ( - - NGX_SMP_LOCK - " cmpxchgl %3, %1; " - " setz %%al; " - " movzbl %%al, %0; " - - : "=a" (res) : "m" (*lock), "a" (old), "q" (set)); - - return res; -} - - -#elif (WIN32) - -#define ngx_atomic_inc(p) InterlockedIncrement((long *) p) -#define ngx_atomic_dec(p) InterlockedDecrement((long *) p) - -#if defined(__WATCOMC__) || defined(__BORLANDC__) - -#define ngx_atomic_cmp_set(lock, old, set) \ - (InterlockedCompareExchange((long *) lock, set, old) == old) - -#else - -#define ngx_atomic_cmp_set(lock, old, set) \ - (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \ - == (void *) old) - -#endif - -#else - -typedef volatile uint32_t ngx_atomic_t; - -/* STUB */ -#define ngx_atomic_inc(x) (*(x))++; -#define ngx_atomic_dec(x) (*(x))--; -#define ngx_atomic_cmp_set(lock, old, set) 1 -/**/ - -#endif - - -#define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) -#define ngx_unlock(lock) *(lock) = 0 - - -#endif /* _NGX_ATOMIC_H_INCLUDED_ */ |
