starboard/benchmark/thread_benchmark.cc

// Copyright 2019 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "third_party/google_benchmark/include/benchmark/benchmark.h"

namespace starboard {
namespace benchmark {
namespace {

void BM_IntegerAccumulation(::benchmark::State& state) {
  const int kIterations = 1024 * 1024;
  for (auto _ : state) {
    int x = 0;
    for (int i = 0; i < kIterations; ++i) {
      ::benchmark::DoNotOptimize(x += i);
    }
  }
  state.SetItemsProcessed(kIterations);
}

BENCHMARK(BM_IntegerAccumulation)->DenseThreadRange(1, 8)->UseRealTime();

}  // namespace
}  // namespace benchmark
}  // namespace starboard