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/**
* @file
*
* @ingroup RTEMSImplClassicTask
*
* @brief This source file contains the implementation of
* rtems_task_wake_when().
*/
/*
* 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.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/tasks.h>
#include <rtems/rtems/clockimpl.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/todimpl.h>
#include <rtems/score/watchdogimpl.h>
rtems_status_code rtems_task_wake_when(
const rtems_time_of_day *time_buffer
)
{
uint32_t seconds;
Thread_Control *executing;
Per_CPU_Control *cpu_self;
rtems_status_code status;
if ( !_TOD_Is_set() )
return RTEMS_NOT_DEFINED;
status = _TOD_Validate( time_buffer, TOD_DISABLE_TICKS_VALIDATION );
if ( status != RTEMS_SUCCESSFUL ) {
return status;
}
seconds = _TOD_To_seconds( time_buffer );
if ( seconds <= _TOD_Seconds_since_epoch() )
return RTEMS_INVALID_CLOCK;
cpu_self = _Thread_Dispatch_disable();
executing = _Per_CPU_Get_executing( cpu_self );
_Thread_Set_state( executing, STATES_WAITING_FOR_TIME );
_Thread_Wait_flags_set( executing, THREAD_WAIT_STATE_BLOCKED );
_Thread_Timer_insert_realtime(
executing,
cpu_self,
_Thread_Timeout,
_Watchdog_Ticks_from_seconds( seconds )
);
_Thread_Dispatch_direct( cpu_self );
return RTEMS_SUCCESSFUL;
}
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