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/*

 *  RTEMS Task 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: taskwakewhen.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/rtems/modes.h>

#include <rtems/score/object.h>

#include <rtems/score/stack.h>

#include <rtems/score/states.h>

#include <rtems/rtems/tasks.h>

#include <rtems/score/thread.h>

#include <rtems/score/threadq.h>

#include <rtems/score/tod.h>

#include <rtems/score/userext.h>

#include <rtems/score/wkspace.h>

#include <rtems/score/apiext.h>

#include <rtems/score/sysstate.h>

/*PAGE

 *

 *  rtems_task_wake_when

 *

 *  This directive blocks the requesting thread until the given date and

 *  time is reached.

 *

 *  Input parameters:

 *    time_buffer - pointer to the time and date structure

 *

 *  Output parameters:

 *    RTEMS_SUCCESSFUL - if successful

 *    error code        - if unsuccessful

 */

rtems_status_code rtems_task_wake_when(

rtems_time_of_day *time_buffer

)

{

  Watchdog_Interval   seconds;

  if ( !_TOD_Is_set )

    return RTEMS_NOT_DEFINED;

  time_buffer->ticks = 0;

  if ( !_TOD_Validate( time_buffer ) )

    return RTEMS_INVALID_CLOCK;

  seconds = _TOD_To_seconds( time_buffer );

  if ( seconds <= _TOD_Seconds_since_epoch )

    return RTEMS_INVALID_CLOCK;

  _Thread_Disable_dispatch();

    _Thread_Set_state( _Thread_Executing, STATES_WAITING_FOR_TIME );

    _Watchdog_Initialize(

      &_Thread_Executing->Timer,

      _Thread_Delay_ended,

      _Thread_Executing->Object.id,

      NULL

    );

    _Watchdog_Insert_seconds(

      &_Thread_Executing->Timer,

      seconds - _TOD_Seconds_since_epoch

    );

  _Thread_Enable_dispatch();

  return RTEMS_SUCCESSFUL;

}