in BenchmarkNdkSample/benchmark/cpp/benchmark/SampleBenchmarks.cpp [27:33]
static void BM_Atomic(benchmark::State &state) {
std::atomic_int myAtomic;
while (state.KeepRunning()) {
myAtomic.fetch_add(1);
}
::benchmark::DoNotOptimize(myAtomic);
} BENCHMARK(BM_Atomic);