Prior written multithreaded under linux, such as
https://www.cnblogs.com/lqerio/p/11117657.html
But did not use <thread>
This note-taking is to use <thread> method (c ++ 11 the introduction of new technology)
reference:
C ++ 11 multi-threaded programming
https://blog.csdn.net/weixin_36049506/article/details/93333549
https://www.cnblogs.com/yssjun/p/11533346.html