http://fpcfjf.blog.163.com/blog/static/55469793201452095738566/?suggestedreading&wumii
http://fpcfjf.blog.163.com/blog/static/5546979320146193451475/
ING【转载】epoll总结系列
原文：http://www.cnblogs.com/charlesblc/p/5918529.html
