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Re: io_select support for netfs

From: Thomas Bushnell, BSG
Subject: Re: io_select support for netfs
Date: 29 Jul 2004 13:16:02 -0700
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3

Bas Wijnen <b.wijnen@phys.rug.nl> writes:

> Even without network you should be careful.  If you have a
> multithreaded program, or a source which is read by multiple
> processes, or some other reason the state can have changed without
> the selecting thread doing anything, you may not be able to read any
> data after a successful select.  If you want to prevent blocking,
> you should use O_NONBLOCK, even if you use select.

That's a different category of care.  I was speaking about care in the
implementation of select; you're speaking about care in the use of select.


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