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/**
* @file
*
* @ingroup RTEMSScoreThread
*
* @brief This source file contains the implementation of
* _Thread_Get_CPU_time_used() and _Thread_Get_CPU_time_used_locked().
*/
/*
* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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/threadimpl.h>
#include <rtems/score/schedulerimpl.h>
static bool _Thread_Is_scheduled( const Thread_Control *the_thread )
{
#if defined(RTEMS_SMP)
return the_thread->Scheduler.state == THREAD_SCHEDULER_SCHEDULED;
#else
return _Thread_Is_executing( the_thread );
#endif
}
Timestamp_Control _Thread_Get_CPU_time_used_locked(
Thread_Control *the_thread
)
{
_Assert( _Thread_State_is_owner( the_thread ) );
_Assert(
_ISR_lock_Is_owner(
&_Scheduler_Get_context( _Thread_Scheduler_get_home( the_thread ) )->Lock
)
);
if ( _Thread_Is_scheduled( the_thread ) ) {
_Thread_Update_CPU_time_used( the_thread, _Thread_Get_CPU( the_thread ) );
}
return the_thread->cpu_time_used;
}
Timestamp_Control _Thread_Get_CPU_time_used( Thread_Control *the_thread )
{
const Scheduler_Control *scheduler;
ISR_lock_Context state_lock_context;
ISR_lock_Context scheduler_lock_context;
Timestamp_Control cpu_time_used;
_Thread_State_acquire( the_thread, &state_lock_context );
scheduler = _Thread_Scheduler_get_home( the_thread );
_Scheduler_Acquire_critical( scheduler, &scheduler_lock_context );
cpu_time_used = _Thread_Get_CPU_time_used_locked( the_thread );
_Scheduler_Release_critical( scheduler, &scheduler_lock_context );
_Thread_State_release( the_thread, &state_lock_context );
return cpu_time_used;
}
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