From: Jeff King <peff@peff.net>
Date: Fri, 01 Apr 2011 20:05:37 GMT
Subject: Re: [PATCH 5/4] run-command: implement abort_async for pthreads
Message-ID: <20110401200537.GA15778@sigill.intra.peff.net>
In-Reply-To: <AANLkTimKPD6rw1B9gG3ZN0KEOY41nk=6jE0MVcdotpkp@mail.gmail.com>

On Fri, Apr 01, 2011 at 09:57:14PM +0200, Erik Faye-Lund wrote:

> > But this does not help the case at hand in any way. How would you interrupt a
> > thread that is blocked in ReadFile()? The point of pthread_cancel() is that
> > it interrupts blocked system calls
> 
> There is no mention of such a guarantee in POSIX (section 2.9.5 Thread
> Cancellation), so relying on that is undefined behavior.

Eh? My pthreads(7) says that read() is required to be a cancellation
point acrroding to POSIX. I didn't dig up the actual reference in the
standard, though.

-Peff