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Date: Fri, 5 Aug 2005 13:32:04 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: 1.5.18: pthread_cond_wait() can return ETIMEDOUT too early
Message-ID: <20050805113204.GD14783@calimero.vinschen.de>
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On Aug  4 15:57, Bart Van Assche wrote:
> Hello,
>   
>      For me it is convenient to call pthread_cond_timedwait() to
> specify { 0x7fffffff, 0 } as the deadline instead of calling
> pthread_cond_wait(). Apparently this works with the Linux
> implementation of pthread_cond_timedwait() I tried, but not with
> Cygwin's implementation. I had a look at Cygwin's implementation
> (winsup/cygwin/thread.c version 1.190), and I expect that this bug is
> caused by an arithmetic overflow during the conversion of the timespec
> deadline into a signed 32-bit timeout in milliseconds.

Thanks for the testcase.  I've applied a patch to current CVS which
should avoid overflow problems.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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