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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
#define ngx_atomic_inc(p) InterlockedIncrement((long *) p)
#if defined( __WATCOMC__ ) || defined( __BORLANDC__ )
/* 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_ */
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