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Re: [Chicken-hackers] [PATCH] Fix for poll() "special" values in revent
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From: |
Jim Ursetto |
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Subject: |
Re: [Chicken-hackers] [PATCH] Fix for poll() "special" values in revent |
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Date: |
Wed, 27 Feb 2013 15:59:11 -0600 |
On Feb 26, 2013, at 12:02 PM, Peter Bex wrote:
> Hi all,
>
> Here's a patch to deal with "special" situations in poll(). Mario found a
> problem on Linux: [...]
> In any case, we don't check poll() revents for any other values than
> POLLIN/POLLOUT, which is clearly wrong; if a pipe is closed, there's
> nothing to read, but it will be POLLHUP'ed. Apparently on non-Linux
> this generally won't be signalled like this (except maybe in some
> situations), which is why this wasn't noticed before.
Problem will likely occur on Solaris as well, according to
https://blogs.oracle.com/vlad/entry/poll_and_pollhup_in_solaris
Jim