Mercurial > hg > nginx-quic
view src/os/win32/ngx_atomic.h @ 545:0148586012ab release-0.2.1
nginx-0.2.1-RELEASE import
*) Bugfix: if all backend using in load-balancing failed after one
error, then nginx may got caught in an endless loop; the bug had
appeared in 0.2.0.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Fri, 23 Sep 2005 14:43:49 +0000 |
parents | d7c90bb5ce83 |
children | e48ebafc6939 |
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/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_ATOMIC_H_INCLUDED_ #define _NGX_ATOMIC_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #define NGX_HAVE_ATOMIC_OPS 1 typedef int32_t ngx_atomic_int_t; typedef uint32_t ngx_atomic_uint_t; typedef volatile ngx_atomic_uint_t ngx_atomic_t; #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 #define ngx_atomic_inc(p) InterlockedIncrement((long *) p) #define ngx_atomic_dec(p) InterlockedDecrement((long *) p) #if defined( __WATCOMC__ ) || defined( __BORLANDC__ ) || ( _MSC_VER >= 1300 ) /* the new SDK headers */ #define ngx_atomic_cmp_set(lock, old, set) \ (InterlockedCompareExchange((long *) lock, set, old) == old) #else /* the old MS VC6.0SP2 SDK headers */ #define ngx_atomic_cmp_set(lock, old, set) \ (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \ == (void *) old) #endif void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin); #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) #define ngx_unlock(lock) *(lock) = 0 #endif /* _NGX_ATOMIC_H_INCLUDED_ */