/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RtemsCpuuseValCpuuse
*/
/*
* Copyright (C) 2021 embedded brains GmbH & Co. KG
*
* 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.
*/
/*
* This file is part of the RTEMS quality process and was automatically
* generated. If you find something that needs to be fixed or
* worded better please post a report or patch to an RTEMS mailing list
* or raise a bug report:
*
* https://www.rtems.org/bugs.html
*
* For information on updating and regenerating please refer to the How-To
* section in the Software Requirements Engineering chapter of the
* RTEMS Software Engineering manual. The manual is provided as a part of
* a release. For development sources please refer to the online
* documentation at:
*
* https://docs.rtems.org
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/cpuuse.h>
#include <rtems/score/threadimpl.h>
#include "tx-support.h"
#include <rtems/test.h>
/**
* @defgroup RtemsCpuuseValCpuuse spec:/rtems/cpuuse/val/cpuuse
*
* @ingroup TestsuitesValidationNoClock0
*
* @brief Tests the CPU usage reporting and reset.
*
* This test case performs the following actions:
*
* - Create a worker thread. Generate some CPU usage.
*
* - Check that we have a non-zero CPU usage. Reset the CPU usage. Check
* that it was cleared to zero.
*
* - Clean up all used resources.
*
* @{
*/
static void Worker( rtems_task_argument arg )
{
(void) arg;
while ( true ) {
Yield();
}
}
/**
* @brief Create a worker thread. Generate some CPU usage.
*/
static void RtemsCpuuseValCpuuse_Action_0( void )
{
rtems_id id;
Thread_Control *self;
Thread_Control *other;
Timestamp_Control cpu_usage_self;
Timestamp_Control cpu_usage_other;
uint32_t idle_tasks;
uint32_t cpu_index;
idle_tasks = 0;
for ( cpu_index = 0; cpu_index < rtems_scheduler_get_processor_maximum(); ++cpu_index ) {
rtems_status_code sc;
rtems_id unused;
sc = rtems_scheduler_ident_by_processor( cpu_index, &unused );
if ( sc == RTEMS_SUCCESSFUL ) {
++idle_tasks;
}
}
id = CreateTask( "WORK", GetSelfPriority() );
StartTask( id, Worker, NULL );
self = GetThread( RTEMS_SELF );
other = GetThread( id );
Yield();
Yield();
/*
* Check that we have a non-zero CPU usage. Reset the CPU usage. Check that
* it was cleared to zero.
*/
TimecounterTick();
cpu_usage_self = _Thread_Get_CPU_time_used( self );
cpu_usage_other = _Thread_Get_CPU_time_used( other );
T_gt_i64( _Thread_Get_CPU_time_used_after_last_reset( self ), 0 );
T_gt_i64( _Thread_Get_CPU_time_used_after_last_reset( other ), 0 );
rtems_cpu_usage_reset();
/*
* Our CPU usage after the last reset is now exactly one tick of the
* software timecounter.
*/
T_eq_i64( _Thread_Get_CPU_time_used_after_last_reset( self ), 4295 );
T_eq_i64(
_Thread_Get_CPU_time_used( self ),
cpu_usage_self + 12885 + 4295 * idle_tasks
);
T_eq_i64( _Thread_Get_CPU_time_used_after_last_reset( other ), 0 );
T_eq_i64( _Thread_Get_CPU_time_used( other ), cpu_usage_other );
/*
* Clean up all used resources.
*/
DeleteTask( id );
}
/**
* @fn void T_case_body_RtemsCpuuseValCpuuse( void )
*/
T_TEST_CASE( RtemsCpuuseValCpuuse )
{
RtemsCpuuseValCpuuse_Action_0();
}
/** @} */
