Re: Can you select() socketpair()-generated descriptors?

From: Brian Raiter (blr_at_drizzle.com)
Date: 09/29/04 

Date: Wed, 29 Sep 2004 20:15:21 +0000 (UTC)

> I'm using select() as I do with all the socket descriptors and pipe
> descriptors, but it just times out, as though the socket was never
> sent.

It is almost certainly a bug in your code. Did you remember to set the
first argument to select() to be the value of your largest file
descriptor PLUS one? Did you remember to re-initialize your file
descriptor masks before EVERY call to select()?

> If I create a set of descriptors using socketpair(AF_UNIX,
> SOL_SOCKET, 0, desAncils), does select() treat those descriptors the
> same as those created with pipe(), accept() or connect()?

Yes. Or open(). Or the 0, 1, and 2 descriptors automatically created
for you. As far as select() is concerned, a file descriptor is a file
descriptor is a file descriptor. You can select() on all of them.

b

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