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/*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdarg.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <semaphore.h>
#include <limits.h>
#include <rtems/system.h>
#include <rtems/score/object.h>
#include <rtems/posix/semaphore.h>
#include <rtems/posix/time.h>
#include <rtems/seterr.h>
/*PAGE
*
* sem_close
*
* Routine to close a semaphore that has been opened or initialized.
*
* 11.2.4 Close a Named Semaphore, P1003.1b-1993, p.224
*/
int sem_close(
sem_t *sem
)
{
register POSIX_Semaphore_Control *the_semaphore;
Objects_Locations location;
the_semaphore = _POSIX_Semaphore_Get( sem, &location );
switch ( location ) {
case OBJECTS_ERROR:
set_errno_and_return_minus_one( EINVAL );
case OBJECTS_REMOTE:
_Thread_Dispatch();
return POSIX_MP_NOT_IMPLEMENTED();
set_errno_and_return_minus_one( EINVAL );
case OBJECTS_LOCAL:
the_semaphore->open_count -= 1;
_POSIX_Semaphore_Delete( the_semaphore );
_Thread_Enable_dispatch();
return 0;
}
return POSIX_BOTTOM_REACHED();
}
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