1、循环轮询系统 循环轮询系统(polling loop)通常的软件结构C 代码如下: 该结构的程序依次检查系统每一个输入条件,一旦条件成立就能进行相应的处理, 这种结构是我们刚刚接...
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polling loop system 循环轮询系统
Don't you need a polling loop to see when a request is finished?
难道不需要进行轮询循环就能查看何时完成请求吗?
If poll is called in a loop, these expensive system calls involved in polling can dramatically affect the overall performance when a large number of file descriptors are monitored.
在监视大量文件描述符时,如果在循环中调用poll ,poll所涉及的这些高成本的系统调用会严重影响总体性能。
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