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/******************************************************
The interface to the operating system synchronization primitives.
(c) 1995 Innobase Oy
Created 9/6/1995 Heikki Tuuri
*******************************************************/
#ifdef __WIN__
#include <winbase.h>
#endif
#ifndef _WIN32
/**************************************************************
Acquires ownership of a fast mutex. */
UNIV_INLINE
ulint
os_fast_mutex_trylock(
/*==================*/
/* out: 0 if success, != 0 if
was reserved by another
thread */
os_fast_mutex_t* fast_mutex) /* in: mutex to acquire */
{
#ifdef __WIN__
int ret;
/* TODO: TryEnterCriticalSection is probably not found from
NT versions < 4! */
ret = TryEnterCriticalSection(fast_mutex);
if (ret) {
return(0);
}
return(1);
#else
return((ulint) pthread_mutex_trylock(fast_mutex));
#endif
}
#endif
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