Google benchmark
1.测量开发的某一段代码的性能；
2.开发性能测试程序
reference:
https://github.com/google/benchmark.git
https://blog.csdn.net/Tornado1102/article/details/77977720
https://blog.csdn.net/ruiruiafafafa/article/details/80801423
https://www.freesion.com/article/7006234278/