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/**
* @file
*
* @ingroup RTEMSImplClassicSemaphore
*
* @brief This source file contains the implementation of
* rtems_semaphore_flush().
*/
/*
* COPYRIGHT (c) 1989-2014.
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/semimpl.h>
rtems_status_code rtems_semaphore_flush( rtems_id id )
{
Semaphore_Control *the_semaphore;
Thread_queue_Context queue_context;
uintptr_t flags;
Semaphore_Variant variant;
the_semaphore = _Semaphore_Get( id, &queue_context );
if ( the_semaphore == NULL ) {
#if defined(RTEMS_MULTIPROCESSING)
if ( _Semaphore_MP_Is_remote( id ) ) {
return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
}
#endif
return RTEMS_INVALID_ID;
}
_Thread_queue_Acquire_critical(
&the_semaphore->Core_control.Wait_queue,
&queue_context
);
_Thread_queue_Context_set_MP_callout(
&queue_context,
_Semaphore_MP_Send_object_was_deleted
);
flags = _Semaphore_Get_flags( the_semaphore );
variant = _Semaphore_Get_variant( flags );
switch ( variant ) {
#if defined(RTEMS_SMP)
case SEMAPHORE_VARIANT_MRSP:
_Thread_queue_Release(
&the_semaphore->Core_control.Wait_queue,
&queue_context
);
return RTEMS_NOT_DEFINED;
#endif
default:
_Assert(
variant == SEMAPHORE_VARIANT_MUTEX_INHERIT_PRIORITY
|| variant == SEMAPHORE_VARIANT_MUTEX_PRIORITY_CEILING
|| variant == SEMAPHORE_VARIANT_MUTEX_NO_PROTOCOL
|| variant == SEMAPHORE_VARIANT_SIMPLE_BINARY
|| variant == SEMAPHORE_VARIANT_COUNTING
);
_Thread_queue_Flush_critical(
&the_semaphore->Core_control.Wait_queue.Queue,
_Semaphore_Get_operations( flags ),
_Thread_queue_Flush_status_unavailable,
&queue_context
);
break;
}
return RTEMS_SUCCESSFUL;
}
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