From: Gerd Stolpmann <info@gerd-stolpmann.de>
To: Matej Kosik <kosik@fiit.stuba.sk>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] interesting (unexpected) sideeffect
Date: Tue, 13 Sep 2011 20:44:52 +0200 [thread overview]
Message-ID: <1315939492.7337.4.camel@thinkpad> (raw)
In-Reply-To: <4E6F400C.8020303@fiit.stuba.sk>
Am Dienstag, den 13.09.2011, 13:35 +0200 schrieb Matej Kosik:
> Hi,
>
> I have noticed that when I compile my program with
>
> ocamlc -vmthread ... threads.cma ...
>
> options, then
>
> Unix.set_nonblock
>
> function does not work. I.e. Unix.recv function called with a given
> socket can block. Is this an intended behavior?
Maybe not intended, but accepted (I reported that already years ago).
The VM threads have serious limits, and are not meant as a replacement
for kernel threads. So, some properties of file descriptors are always
reset on occasion (VM context switch, or Unix.select). I guess it is too
difficult to get this right.
Gerd
--
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Gerd Stolpmann, Darmstadt, Germany gerd@gerd-stolpmann.de
Creator of GODI and camlcity.org.
Contact details: http://www.camlcity.org/contact.html
Company homepage: http://www.gerd-stolpmann.de
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prev parent reply other threads:[~2011-09-13 18:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-13 11:35 Matej Kosik
2011-09-13 18:44 ` Gerd Stolpmann [this message]
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