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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#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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