Linux五种IO模型
https://www.cnblogs.com/renxs/p/3683189.html
转载:http://blog.csdn.net/jay900323/article/details/18141217
https://www.cnblogs.com/renxs/p/3683189.html
转载:http://blog.csdn.net/jay900323/article/details/18141217
