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/*

 *  16.1.7 Compare Thread IDs, p1003.1c/Draft 10, p. 153

 *

 *  NOTE:  POSIX does not define the behavior when either thread id is invalid.

 *

 *  COPYRIGHT (c) 1989-1999.

 *  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.OARcorp.com/rtems/license.html.

 *

 *  $Id: pthreadequal.c,v 1.2 2001-09-27 11:59:17 chris Exp $

 */

#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;

  /*

   *  By default this is not a match.

   */

  status = 0;

  /*

   *  Validate the first id and return 0 if it is not valid

   */

  (void) _POSIX_Threads_Get( t1, &location );

  switch ( location ) {

    case OBJECTS_ERROR:

    case OBJECTS_REMOTE:

      break;

    case OBJECTS_LOCAL:

      /*

       *  Validate the second id and return 0 if it is not valid

       */

      (void) _POSIX_Threads_Get( t2, &location );

      switch ( location ) {

        case OBJECTS_ERROR:

        case OBJECTS_REMOTE:

          break;

        case OBJECTS_LOCAL:

          status = _Objects_Are_ids_equal( t1, t2 );

          break;

      }

      _Thread_Unnest_dispatch();

      break;

  }

  _Thread_Enable_dispatch();

  return status;

#endif

}