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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>
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_Control *executing;
Thread_queue_Context queue_context;
the_semaphore = _POSIX_Semaphore_Get( sem, &queue_context );
if ( the_semaphore == NULL ) {
rtems_set_errno_and_return_minus_one( EINVAL );
}
executing = _Thread_Executing;
_CORE_semaphore_Seize(
&the_semaphore->Semaphore,
executing,
blocking,
timeout,
&queue_context
);
if ( executing->Wait.return_code == CORE_SEMAPHORE_STATUS_SUCCESSFUL ) {
return 0;
}
rtems_set_errno_and_return_minus_one(
_POSIX_Semaphore_Translate_core_semaphore_return_code(
executing->Wait.return_code
)
);
}
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