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/**
* @file
*
* @brief POSIX Semaphore Wait Support
* @ingroup POSIXSemaphorePrivate
*/
/*
* COPYRIGHT (c) 1989-2012.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <semaphore.h>
#include <rtems/posix/semaphoreimpl.h>
#include <rtems/posix/posixapi.h>
THREAD_QUEUE_OBJECT_ASSERT( POSIX_Semaphore_Control, Semaphore.Wait_queue );
int _POSIX_Semaphore_Wait_support(
sem_t *sem,
bool blocking,
Watchdog_Interval timeout
)
{
POSIX_Semaphore_Control *the_semaphore;
Thread_queue_Context queue_context;
Status_Control status;
the_semaphore = _POSIX_Semaphore_Get( sem, &queue_context );
if ( the_semaphore == NULL ) {
rtems_set_errno_and_return_minus_one( EINVAL );
}
_Thread_queue_Context_set_relative_timeout( &queue_context, timeout );
status = _CORE_semaphore_Seize(
&the_semaphore->Semaphore,
POSIX_SEMAPHORE_TQ_OPERATIONS,
_Thread_Executing,
blocking,
&queue_context
);
return _POSIX_Zero_or_minus_one_plus_errno( status );
}
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