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/* $Id$
* =============================================================================
*
* = LIBRARY
* pace
*
* = FILENAME
* pace/win32/semaphore.c
*
* = AUTHOR
* Luther Baker
*
* ============================================================================= */
#include "pace/semaphore.h"
#if !defined (PACE_HAS_INLINE)
# include "pace/win32/semaphore.inl"
#endif /* ! PACE_HAS_INLINE */
#if (PACE_HAS_POSIX_NONUOF_FUNCS)
# include <stdio.h>
#endif /* PACE_HAS_POSIX_NONUOF_FUNCS */
#if (PACE_HAS_POSIX_NONUOF_FUNCS)
int
sem_close (pace_sem_t * sem)
{
PACE_WIN32CALL_RETURN
(PACE_ADAPT_RETVAL
(CloseHandle (sem), pace_result_), int, -1);
}
#endif /* PACE_HAS_POSIX_NONUOF_FUNCS */
#if (PACE_HAS_POSIX_NONUOF_FUNCS)
int
sem_destroy (pace_sem_t * sem)
{
PACE_WIN32CALL_RETURN
(PACE_ADAPT_RETVAL
(CloseHandle (sem), pace_result_), int, -1);
}
#endif /* PACE_HAS_POSIX_NONUOF_FUNCS */
#if (PACE_HAS_POSIX_NONUOF_FUNCS)
int
sem_init (pace_sem_t * sem, int pshared, unsigned int value)
{
PACE_UNUSED_ARG (pshared);
/* Create the semaphore with its value initialized to <count> and
its maximum value initialized to <max>.
How do we want to call CreateSemaphore? What about the char *?
*/
*sem = CreateSemaphore (0, value, 2147483647, "noname");
if (*sem == 0)
{
PACE_FAIL_RETURN (-1);
}
/* NOTREACHED */
else
{
return 0;
}
}
#endif /* PACE_HAS_POSIX_NONUOF_FUNCS */
#if (PACE_HAS_POSIX_NONUOF_FUNCS)
int
sem_post (pace_sem_t * sem)
{
PACE_WIN32CALL_RETURN
(PACE_ADAPT_RETVAL
(ReleaseSemaphore (*sem, 1, 0), pace_result_), int, -1);
}
#endif /* PACE_HAS_POSIX_NONUOF_FUNCS */
#if (PACE_HAS_POSIX_NONUOF_FUNCS)
int
sem_trywait (pace_sem_t * sem)
{
int result = WaitForSingleObject (*sem, 0);
if (result == WAIT_OBJECT_0)
{
return 0;
}
else
{
if (result == WAIT_TIMEOUT)
{
errno = EBUSY;
}
else
{
errno = GetLastError ();
}
/* This is a hack, we need to find an appropriate mapping... */
return -1;
}
}
#endif /* PACE_HAS_POSIX_NONUOF_FUNCS */
#if (PACE_HAS_POSIX_NONUOF_FUNCS)
int
sem_wait (pace_sem_t * sem)
{
switch (WaitForSingleObject (*sem, INFINITE))
{
case WAIT_OBJECT_0:
return 0;
default:
/* This is a hack, we need to find an appropriate mapping... */
errno = GetLastError ();
return -1;
}
}
#endif /* PACE_HAS_POSIX_NONUOF_FUNCS */
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