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/*
* Time of Day (TOD) Handler - get uptime
*/
/* COPYRIGHT (c) 1989-2008.
* 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.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/score/isr.h>
#include <rtems/score/timestamp.h>
#include <rtems/score/tod.h>
#include <rtems/score/watchdog.h>
/*
* _TOD_Get_uptime
*
* This routine is used to obtain the system uptime
*
* Input parameters:
* time - pointer to the timestamp structure
*
* Output parameters: NONE
*/
void _TOD_Get_uptime(
Timestamp_Control *uptime
)
{
ISR_Level level;
Timestamp_Control offset;
Timestamp_Control up;
long nanoseconds;
/* assume time checked for NULL by caller */
/* _TOD_Uptime is in native timestamp format */
nanoseconds = 0;
_ISR_Disable( level );
up = _TOD_Uptime;
if ( _Watchdog_Nanoseconds_since_tick_handler )
nanoseconds = (*_Watchdog_Nanoseconds_since_tick_handler)();
_ISR_Enable( level );
_Timestamp_Set( &offset, 0, nanoseconds );
_Timestamp_Add_to( &up, &offset );
*uptime = up;
}
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