https://asplos.dev/wordpress/2018/12/13/%e6%89%be%e5%88%b0%e4%b8%80%e4%b8%aa%e5%8f%af%e4%bb%a5%e7%94%a8%e6%9d%a5%e8%a7%a3%e9%87%8ahw4_3-cpp%e7%9a%84%e5%9b%be/