Google Benchmark

Benchmark 是 Google 一个用来对代码片段进行基准测试的库，类似单元测试，例如：

#include <benchmark/benchmark.h>



static void BM_SomeFunction(benchmark::State& state) {

  // Perform setup here

  for (auto _ : state) {

    // This code gets timed

    SomeFunction();

  }

}

// Register the function as a benchmark

BENCHMARK(BM_SomeFunction);

// Run the benchmark

BENCHMARK_MAIN();