[Haskell-cafe] Re: sendfile leaking descriptors on Linux?

Thomas Hartman tphyahoo at gmail.com
Tue Feb 9 19:47:53 EST 2010

Matt, have you seen this thread?

Jeremy, are you saying this a bug in the sendfile library on hackage,
or something underlying?


2010/2/9 Jeremy Shaw <jeremy at n-heptane.com>:
> On Sun, Feb 7, 2010 at 9:22 AM, Bardur Arantsson <spam at scientician.net>
> wrote:
>> True, it is perhaps technically not a bug, but it is certainly a
>> misfeature since there is no easy way (at least AFAICT) to discover that
>> something bad has happened for the file descriptor and act accordingly.
>> AFAICT any solution would have to be based on a separate thread which either
>> 1) "checks" the FD periodically somehow, or 2) simply lets the thread doing
>> the threadWaitWrite time out after a set period of inactivity. Neither is
>> very optimal.
>> Either way, I'd certainly expect the sendfile library to work around this
>> somehow such that this situation doesn't occur. I'm just having a hard time
>> thinking up a good solution :).
> Well, it is certainly a bug in sendfile that needs to be fixed. I'm not sure
> how to fix it either. If we can simplify the test case, we can ask Simon
> Marlow..
> - jeremy
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