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2cb3d75d9e
Measure the runtime of 1000 no-operation instructions. This may help to investigate runtime measurement variations which do not result from code generation or source code changes. The runtime measurement of a function which does nothing and just returns gives an estimate of the measurement overhead. Update #3716.
271 lines
6.7 KiB
C
271 lines
6.7 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup ScoreCpuValPerf
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*/
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/*
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* Copyright (C) 2023 embedded brains GmbH & Co. KG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This file is part of the RTEMS quality process and was automatically
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* generated. If you find something that needs to be fixed or
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* worded better please post a report or patch to an RTEMS mailing list
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* or raise a bug report:
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*
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* https://www.rtems.org/bugs.html
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*
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* For information on updating and regenerating please refer to the How-To
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* section in the Software Requirements Engineering chapter of the
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* RTEMS Software Engineering manual. The manual is provided as a part of
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* a release. For development sources please refer to the online
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* documentation at:
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*
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* https://docs.rtems.org
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems/score/cpuimpl.h>
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#include "tx-support.h"
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#include <rtems/test.h>
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/**
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* @defgroup ScoreCpuValPerf spec:/score/cpu/val/perf
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*
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* @ingroup TestsuitesPerformanceNoClock0
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*
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* @brief This test case provides a context to run CPU port performance tests.
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*
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* @{
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*/
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/**
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* @brief Test context for spec:/score/cpu/val/perf test case.
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*/
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typedef struct {
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/**
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* @brief This member references the measure runtime context.
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*/
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T_measure_runtime_context *context;
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/**
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* @brief This member provides the measure runtime request.
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*/
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T_measure_runtime_request request;
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/**
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* @brief This member provides an optional measurement begin time point.
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*/
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T_ticks begin;
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/**
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* @brief This member provides an optional measurement end time point.
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*/
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T_ticks end;
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} ScoreCpuValPerf_Context;
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static ScoreCpuValPerf_Context
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ScoreCpuValPerf_Instance;
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static void ScoreCpuValPerf_Setup_Context( ScoreCpuValPerf_Context *ctx )
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{
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T_measure_runtime_config config;
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memset( &config, 0, sizeof( config ) );
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config.sample_count = 100;
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ctx->request.arg = ctx;
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ctx->request.flags = T_MEASURE_RUNTIME_REPORT_SAMPLES;
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ctx->context = T_measure_runtime_create( &config );
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T_assert_not_null( ctx->context );
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}
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static void ScoreCpuValPerf_Setup_Wrap( void *arg )
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{
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ScoreCpuValPerf_Context *ctx;
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ctx = arg;
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ScoreCpuValPerf_Setup_Context( ctx );
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}
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static T_fixture ScoreCpuValPerf_Fixture = {
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.setup = ScoreCpuValPerf_Setup_Wrap,
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.stop = NULL,
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.teardown = NULL,
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.scope = NULL,
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.initial_context = &ScoreCpuValPerf_Instance
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};
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/**
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* @defgroup ScoreCpuReqPerfEmpty spec:/score/cpu/req/perf-empty
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*
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* @{
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*/
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/**
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* @brief Do nothing and just return.
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*/
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static void ScoreCpuReqPerfEmpty_Body( ScoreCpuValPerf_Context *ctx )
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{
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/* No code */
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}
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static void ScoreCpuReqPerfEmpty_Body_Wrap( void *arg )
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{
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ScoreCpuValPerf_Context *ctx;
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ctx = arg;
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ScoreCpuReqPerfEmpty_Body( ctx );
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}
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/**
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* @brief Discard samples interrupted by a clock tick.
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*/
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static bool ScoreCpuReqPerfEmpty_Teardown(
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ScoreCpuValPerf_Context *ctx,
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T_ticks *delta,
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uint32_t tic,
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uint32_t toc,
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unsigned int retry
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)
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{
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return tic == toc;
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}
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static bool ScoreCpuReqPerfEmpty_Teardown_Wrap(
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void *arg,
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T_ticks *delta,
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uint32_t tic,
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uint32_t toc,
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unsigned int retry
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)
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{
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ScoreCpuValPerf_Context *ctx;
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ctx = arg;
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return ScoreCpuReqPerfEmpty_Teardown( ctx, delta, tic, toc, retry );
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}
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/** @} */
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/**
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* @defgroup ScoreCpuReqPerfNops spec:/score/cpu/req/perf-nops
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*
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* @{
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*/
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/**
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* @brief Execute exactly 1000 no-operation instructions.
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*/
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static void ScoreCpuReqPerfNops_Body( ScoreCpuValPerf_Context *ctx )
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{
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#define NOPS_10 \
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_CPU_Instruction_no_operation(); _CPU_Instruction_no_operation(); \
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_CPU_Instruction_no_operation(); _CPU_Instruction_no_operation(); \
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_CPU_Instruction_no_operation(); _CPU_Instruction_no_operation(); \
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_CPU_Instruction_no_operation(); _CPU_Instruction_no_operation(); \
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_CPU_Instruction_no_operation(); _CPU_Instruction_no_operation();
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#define NOPS_100 NOPS_10 NOPS_10 NOPS_10 NOPS_10 NOPS_10 NOPS_10 NOPS_10 \
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NOPS_10 NOPS_10 NOPS_10
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NOPS_100
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NOPS_100
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NOPS_100
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NOPS_100
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NOPS_100
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NOPS_100
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NOPS_100
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NOPS_100
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NOPS_100
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NOPS_100
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}
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static void ScoreCpuReqPerfNops_Body_Wrap( void *arg )
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{
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ScoreCpuValPerf_Context *ctx;
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ctx = arg;
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ScoreCpuReqPerfNops_Body( ctx );
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}
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/**
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* @brief Discard samples interrupted by a clock tick.
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*/
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static bool ScoreCpuReqPerfNops_Teardown(
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ScoreCpuValPerf_Context *ctx,
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T_ticks *delta,
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uint32_t tic,
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uint32_t toc,
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unsigned int retry
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)
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{
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return tic == toc;
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}
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static bool ScoreCpuReqPerfNops_Teardown_Wrap(
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void *arg,
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T_ticks *delta,
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uint32_t tic,
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uint32_t toc,
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unsigned int retry
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)
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{
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ScoreCpuValPerf_Context *ctx;
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ctx = arg;
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return ScoreCpuReqPerfNops_Teardown( ctx, delta, tic, toc, retry );
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}
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/** @} */
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/**
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* @fn void T_case_body_ScoreCpuValPerf( void )
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*/
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T_TEST_CASE_FIXTURE( ScoreCpuValPerf, &ScoreCpuValPerf_Fixture )
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{
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ScoreCpuValPerf_Context *ctx;
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ctx = T_fixture_context();
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ctx->request.name = "ScoreCpuReqPerfEmpty";
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ctx->request.setup = NULL;
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ctx->request.body = ScoreCpuReqPerfEmpty_Body_Wrap;
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ctx->request.teardown = ScoreCpuReqPerfEmpty_Teardown_Wrap;
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T_measure_runtime( ctx->context, &ctx->request );
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ctx->request.name = "ScoreCpuReqPerfNops";
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ctx->request.setup = NULL;
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ctx->request.body = ScoreCpuReqPerfNops_Body_Wrap;
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ctx->request.teardown = ScoreCpuReqPerfNops_Teardown_Wrap;
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T_measure_runtime( ctx->context, &ctx->request );
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}
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/** @} */
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