58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TNT_MATH_BENCHMARK_PEROFRMANCECOUNTERS_H
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#define TNT_MATH_BENCHMARK_PEROFRMANCECOUNTERS_H
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#include <benchmark/benchmark.h>
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#include <utils/Profiler.h>
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#include <cmath>
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class PerformanceCounters {
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benchmark::State& state;
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utils::Profiler profiler;
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utils::Profiler::Counters counters{};
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public:
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explicit PerformanceCounters(benchmark::State& state)
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: state(state) {
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profiler.resetEvents(utils::Profiler::EV_CPU_CYCLES | utils::Profiler::EV_BPU_MISSES);
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profiler.start();
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}
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void stop() {
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profiler.stop();
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}
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~PerformanceCounters() {
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profiler.stop();
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counters = profiler.readCounters();
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if (profiler.isValid()) {
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auto avgItem = double(state.iterations()) / state.items_processed();
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state.counters.insert({
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{ "C", { avgItem * (double)counters.getCpuCycles(), benchmark::Counter::kAvgIterations }},
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{ "I", { avgItem * (double)counters.getInstructions(), benchmark::Counter::kAvgIterations }},
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{ "BPU", { std::floor(0.5 + avgItem * (double)counters.getBranchMisses() / state.iterations()), benchmark::Counter::kDefaults }},
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{ "CPI", { (double)counters.getCPI(), benchmark::Counter::kAvgThreads }},
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});
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}
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}
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};
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#endif //TNT_MATH_BENCHMARK_PEROFRMANCECOUNTERS_H
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