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Stevens在文章中一共比较了五种IO Model:
* blocking IO
* nonblocking IO
* IO multiplexing
* signal driven IO
* asynchronous IO
由signal driven IO在实际中并不常用,所以主要介绍其余四种IO Model。
http://www.cnblogs.com/Forever-Kenlen-Ja/p/4480718.html
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原文地址:http://www.cnblogs.com/cutepig/p/4480761.html