Subversion Repositories openrisc_2011-10-31

/*

 *  Timer Manager

 *

 *

 *  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: timerfireafter.c,v 1.2 2001-09-27 11:59:19 chris Exp $

 */

#include <rtems/system.h>

#include <rtems/rtems/status.h>

#include <rtems/rtems/support.h>

#include <rtems/score/object.h>

#include <rtems/score/thread.h>

#include <rtems/rtems/timer.h>

#include <rtems/score/tod.h>

#include <rtems/score/watchdog.h>

/*PAGE

 *

 *  rtems_timer_fire_after

 *

 *  This directive allows a thread to start a timer.

 *

 *  Input parameters:

 *    id      - timer id

 *    ticks   - interval until routine is fired

 *    routine - routine to schedule

 *

 *  Output parameters:

 *    RTEMS_SUCCESSFUL - if successful

 *    error code        - if unsuccessful

 */

rtems_status_code rtems_timer_fire_after(

  Objects_Id                         id,

  rtems_interval                     ticks,

  rtems_timer_service_routine_entry  routine,

  void                              *user_data

)

{

  Timer_Control      *the_timer;

  Objects_Locations   location;

  if ( ticks == 0 )

    return RTEMS_INVALID_NUMBER;

  the_timer = _Timer_Get( id, &location );

  switch ( location ) {

    case OBJECTS_REMOTE:            /* should never return this */

      return RTEMS_INTERNAL_ERROR;

    case OBJECTS_ERROR:

      return RTEMS_INVALID_ID;

    case OBJECTS_LOCAL:

      (void) _Watchdog_Remove( &the_timer->Ticker );

      the_timer->the_class = TIMER_INTERVAL;

      _Watchdog_Initialize( &the_timer->Ticker, routine, id, user_data );

      _Watchdog_Insert_ticks( &the_timer->Ticker, ticks );

      _Thread_Enable_dispatch();

      return RTEMS_SUCCESSFUL;

  }

  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */

}