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/**
* @file
*
* @brief Returns a Current TOD with Nanosecond Granularity
* @ingroup ScoreTODConstants
*/
/*
* 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.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/todimpl.h>
#include <rtems/score/isrlevel.h>
Timestamp_Control *_TOD_Get_with_nanoseconds(
Timestamp_Control *snapshot,
const Timestamp_Control *clock
)
{
TOD_Control *tod = &_TOD;
ISR_lock_Context lock_context;
Timestamp_Control offset;
Timestamp_Control now;
uint32_t nanoseconds;
_TOD_Acquire( tod, &lock_context );
nanoseconds = ( *tod->nanoseconds_since_last_tick )();
now = *clock;
_TOD_Release( tod, &lock_context );
_Timestamp_Set( &offset, 0, nanoseconds );
_Timestamp_Add_to( &now, &offset );
*snapshot = now;
return snapshot;
}
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