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

 */

#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>

/*

 *  ref_tsk - Reference Task Status

 */

ER ref_tsk(

  T_RTSK *pk_rtsk,

  ID      tskid

)

{

  register Thread_Control *the_thread;

  Objects_Locations        location;

  Priority_Control         core_priority;

  if (!pk_rtsk)

    return E_PAR;

  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 ( location != OBJECTS_LOCAL )

        return  _ITRON_Task_Clarify_get_id_error( tskid );

      /*

       * The following are extended functions [level X ].

       * XXX - tskwait, wid, wupcnt, and tskatr are presently not implemented.

       */

      pk_rtsk->tskwait = 0;

      pk_rtsk->wid     = 0;

      pk_rtsk->wupcnt  = 0;

      pk_rtsk->suscnt  = the_thread->suspend_count;

      pk_rtsk->tskatr  = 0;       /* XXX - Not correctly implemented */

      pk_rtsk->task    = (FP) the_thread->Start.entry_point;

      core_priority    = the_thread->Start.initial_priority;

      pk_rtsk->itskpri = _ITRON_Task_Core_to_Priority( core_priority );

      pk_rtsk->stksz   = the_thread->Start.Initial_stack.size;

      /*

       * The following are required.

       */

      pk_rtsk->exinf   = NULL;   /* extended information */

      pk_rtsk->tskpri  =

                    _ITRON_Task_Core_to_Priority(the_thread->current_priority);

      /*

       * Mask in the tskstat information

       * Convert the task state XXX double check this

       */

      pk_rtsk->tskstat = 0;

      if ( the_thread == _Thread_Executing )

        pk_rtsk->tskstat |= TTS_RUN;

      if ( _States_Is_ready(the_thread->current_state) )

        pk_rtsk->tskstat |= TTS_RDY;

      if ( _States_Is_dormant( the_thread->current_state) )

        pk_rtsk->tskstat |= TTS_DMT;

      if ( _States_Is_suspended(the_thread->current_state) )

        pk_rtsk->tskstat |= TTS_SUS;

      if ( _States_Is_blocked(the_thread->current_state) )

        pk_rtsk->tskstat |= TTS_WAI;

      break;

  }

  _ITRON_return_errorno( E_OK );

}