Subversion Repositories openrisc_2011-10-31

/*

 *  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: sus_tsk.c,v 1.2 2001-09-27 11:59:13 chris Exp $

 */

#include <limits.h>

#include <itron.h>

#include <rtems/score/thread.h>

#include <rtems/score/userext.h>

#include <rtems/score/wkspace.h>

#include <rtems/score/apiext.h>

#include <rtems/score/sysstate.h>

#include <rtems/itron/task.h>

/*

 *  Task-Dependent Synchronization Functions

 */

/*

 *  sus_tsk - Suspend Other Task

 */

ER sus_tsk(

  ID tskid

)

{

  register Thread_Control *the_thread;

  Objects_Locations        location;

  the_thread = _ITRON_Task_Get( tskid, &location );

  switch ( location ) {

    case OBJECTS_REMOTE:

    case OBJECTS_ERROR:

      return _ITRON_Task_Clarify_get_id_error( tskid );

    case OBJECTS_LOCAL:

      if ( _Thread_Is_executing( the_thread ) )

        _ITRON_return_errorno( E_OBJ );

      if (the_thread->suspend_count == INT_MAX )

        _ITRON_return_errorno( E_QOVR );

      _Thread_Suspend( the_thread );

      break;

  }

  _ITRON_return_errorno( E_OK );

}