Subversion Repositories openrisc

/*

 *  $Id: mutexdestroy.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

 *

 *  11.3.2 Initializing and Destroying a Mutex, P1003.1c/Draft 10, p. 87

 */

int pthread_mutex_destroy(

  pthread_mutex_t           *mutex

)

{

  register POSIX_Mutex_Control *the_mutex;

  Objects_Locations             location;

  the_mutex = _POSIX_Mutex_Get( mutex, &location );

  switch ( location ) {

    case OBJECTS_REMOTE:

#if defined(RTEMS_MULTIPROCESSING)

      _Thread_Dispatch();

      return POSIX_MP_NOT_IMPLEMENTED();

      return EINVAL;

#endif

    case OBJECTS_ERROR:

      return EINVAL;

    case OBJECTS_LOCAL:

       /*

        * XXX: There is an error for the mutex being locked

        *  or being in use by a condition variable.

        */

      if ( _CORE_mutex_Is_locked( &the_mutex->Mutex ) ) {

        _Thread_Enable_dispatch();

        return EBUSY;

      }

      _Objects_Close( &_POSIX_Mutex_Information, &the_mutex->Object );

      _CORE_mutex_Flush(

        &the_mutex->Mutex,

#if defined(RTEMS_MULTIPROCESSING)

        _POSIX_Mutex_MP_Send_object_was_deleted,

#else

        NULL,

#endif

        EINVAL

      );

      _POSIX_Mutex_Free( the_mutex );

#if defined(RTEMS_MULTIPROCESSING)

      if ( the_mutex->process_shared == PTHREAD_PROCESS_SHARED ) {

        _Objects_MP_Close( &_POSIX_Mutex_Information, the_mutex->Object.id );

        _POSIX_Mutex_MP_Send_process_packet(

          POSIX_MUTEX_MP_ANNOUNCE_DELETE,

          the_mutex->Object.id,

          0,                         /* Not used */

        );

      }

#endif

      _Thread_Enable_dispatch();

      return 0;

  }

  return POSIX_BOTTOM_REACHED();

}