Socket Select with empty fd set

Posted by whoi on Stack Overflow See other posts from Stack Overflow or by whoi
Published on 2010-04-08T08:01:00Z Indexed on 2010/04/08 8:03 UTC
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socket

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select

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c

Hi; Suppose you have an fd set which can have zero or more sockets in it. When I try to call select operation on empty fd set, what I get is -1 as the number of fds which are set, meaning error. So what would you suggest to overcome this problem, you might say do not call if empty but I have a loop and any time fd set can hold 0 or more sockets. What is the best approach about this problem? (we are on C programming language)

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