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/**
* @file
*
* @ingroup RTEMSScoreTOD
*
* @brief This source file contains the implementation of
* _TOD_Adjust().
*/
/*
* COPYRIGHT (c) 1989-2014.
* 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/score/todimpl.h>
Status_Control _TOD_Adjust(
const struct timespec *delta
)
{
ISR_lock_Context lock_context;
struct timespec tod;
Status_Control status;
/*
* Currently, RTEMS does the adjustment in one movement.
* Given interest, requirements, and sponsorship, a future
* enhancement would be to adjust the time in smaller increments
* at each clock tick. Until then, there is no outstanding
* adjustment.
*/
_TOD_Lock();
_TOD_Acquire( &lock_context );
_TOD_Get( &tod );
_Timespec_Add_to( &tod, delta );
status = _TOD_Is_valid_new_time_of_day( &tod );
if ( status == STATUS_SUCCESSFUL ) {
status = _TOD_Set( &tod, &lock_context );
}
_TOD_Unlock();
return status;
}
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