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/**
* @file
*
* @brief Announce a Clock Tick
* @ingroup ClassicClock
*/
/*
* COPYRIGHT (c) 1989-2009.
* 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/clock.h>
#include <rtems/score/schedulerimpl.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/todimpl.h>
#include <rtems/score/watchdogimpl.h>
rtems_status_code rtems_clock_tick( void )
{
#if defined( RTEMS_SMP )
_Thread_Disable_dispatch();
#endif
_TOD_Tickle_ticks();
_Watchdog_Tickle_ticks();
_Scheduler_Tick();
#if defined( RTEMS_SMP )
_Thread_Enable_dispatch();
#else
if ( _Thread_Is_context_switch_necessary() &&
_Thread_Dispatch_is_enabled() )
_Thread_Dispatch();
#endif
return RTEMS_SUCCESSFUL;
}
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