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/**
* @file
*
* @brief RTEMS Task Wake When
* @ingroup ClassicTasks
*/
/*
* 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.rtems.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/tasks.h>
#include <rtems/rtems/clock.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/watchdogimpl.h>
rtems_status_code rtems_task_wake_when(
rtems_time_of_day *time_buffer
)
{
Watchdog_Interval seconds;
if ( !_TOD.is_set )
return RTEMS_NOT_DEFINED;
if ( !time_buffer )
return RTEMS_INVALID_ADDRESS;
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;
}
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