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/**
* @file
*
* @brief Compare Thread IDs
* @ingroup POSIXAPI
*/
/*
* NOTE: POSIX does not define the behavior when either thread id is invalid.
*
* COPYRIGHT (c) 1989-2007.
* 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.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <rtems/system.h>
#include <rtems/posix/pthread.h>
#include <rtems/score/thread.h>
int pthread_equal(
pthread_t t1,
pthread_t t2
)
{
/*
* If the system is configured for debug, then we will do everything we
* can to insure that both ids are valid. Otherwise, we will do the
* cheapest possible thing to determine if they are equal.
*/
#ifndef RTEMS_DEBUG
return _Objects_Are_ids_equal( t1, t2 );
#else
int status;
Objects_Locations location;
Thread_Control *thread_1;
Thread_Control *thread_2;
/*
* By default this is not a match.
*/
status = 0;
/*
* Validate the first id and return 0 if it is not valid
*/
thread_1 = _Thread_Get( t1, &location );
switch ( location ) {
case OBJECTS_LOCAL:
/*
* Validate the second id and return 0 if it is not valid
*/
thread_2 = _Thread_Get( t2, &location );
switch ( location ) {
case OBJECTS_LOCAL:
status = _Objects_Are_ids_equal( t1, t2 );
_Objects_Put_without_thread_dispatch( &thread_2->Object );
_Objects_Put( &thread_1->Object );
break;
case OBJECTS_ERROR:
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
#endif
/* t1 must have been valid so exit the critical section */
_Objects_Put( &thread_1->Object );
/* return status == 0 */
break;
}
break;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
#endif
case OBJECTS_ERROR:
/* return status == 0 */
break;
}
return status;
#endif
}
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