多路复用之select、poll和epoll

https://blog.csdn.net/jqsfjqsf/article/details/113793897?utm_medium=distribute.pc_relevant.none-task-blog-2~default~baidujs_title~default-1.showsourcetag&spm=1001.2101.3001.4242.2

https://blog.csdn.net/u014753478/article/details/114277450

https://blog.csdn.net/u013851082/article/details/53942947