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/*

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

 */

#include <assert.h>

#include <errno.h>

#include <pthread.h>

#include <rtems/system.h>

#include <rtems/score/coremutex.h>

#include <rtems/score/watchdog.h>

#if defined(RTEMS_MULTIPROCESSING)

#include <rtems/score/mpci.h>

#endif

#include <rtems/posix/mutex.h>

#include <rtems/posix/priority.h>

#include <rtems/posix/time.h>

/*PAGE

 *

 *  13.6.2 Change the Priority Ceiling of a Mutex, P1003.1c/Draft 10, p. 131

 */

int pthread_mutex_getprioceiling(

  pthread_mutex_t   *mutex,

  int               *prioceiling

)

{

  register POSIX_Mutex_Control *the_mutex;

  Objects_Locations             location;

  if ( !prioceiling )

    return EINVAL;

  the_mutex = _POSIX_Mutex_Get( mutex, &location );

  switch ( location ) {

    case OBJECTS_REMOTE:

#if defined(RTEMS_MULTIPROCESSING)

      return POSIX_MP_NOT_IMPLEMENTED();   /* XXX feels questionable */

#endif

    case OBJECTS_ERROR:

      return EINVAL;

    case OBJECTS_LOCAL:

      *prioceiling = _POSIX_Priority_From_core(

        the_mutex->Mutex.Attributes.priority_ceiling

      );

      _Thread_Enable_dispatch();

      return 0;

  }

  return POSIX_BOTTOM_REACHED();

}