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X-HELO: calimero.vinschen.de
Date: Fri, 21 Nov 2014 11:38:03 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Instability with signals and threads
Message-ID: <20141121103803.GC3810@calimero.vinschen.de>
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References: <alpine DOT DEB DOT 2 DOT 02 DOT 1411202055420 DOT 8559 AT artax DOT karlin DOT mff DOT cuni DOT cz> <20141121101502 DOT GA3810 AT calimero DOT vinschen DOT de>
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On Nov 21 11:15, Corinna Vinschen wrote:
> I can't reproduce your backtrace, but I can reproduce another one, which
> is related to thread_exit.  At one point after a couple thousand runs
> through your testcase I have a variable number of threads hanging in
> thread_exit, and a timer thread which is unable to send its signal.  the
> other threads all hang in thread_exit, waiting for a muto which is taken
> by a thread which doesn't exist anymore.  That's a very serious downside
> of the muto implementation not being able to recognize being abandoned.
> I wonder if that shouldn't be using a real OS mutex.

s/thread_exit/exit_thread/g


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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