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Date: Tue, 6 Nov 2007 16:45:50 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: why is pthread_key_create failing?
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On Nov  6 16:30, Corinna Vinschen wrote:
> On Nov  6 15:12, Bruno Haible wrote:
> > Hi,
> > 
> > In the test program below, pthread_key_create is failing with return value
> > EBUSY with no good reason.
> > [...]
> > The Cygwin version that I'm using is:
> > $ grep VERSION /usr/include/cygwin/version.h | head -2
> > #define CYGWIN_VERSION_DLL_MAJOR 1005
> > #define CYGWIN_VERSION_DLL_MINOR 19
> 
> Time to update.
> 
> However, regardless of the version you're using, it's a bug in Cygwin.
> The pthread_key_create function checks the incoming pthread_key_t pointer
> for being a valid object already and,if so, bails out with EBUSY.  This
> is arguably wrong, as your example shows, which reuses pthread_key_t
> slots already used before.  Besides, EBUSY isn't defined as a valid
> error code returned by pthread_key_create.

Heh, I just re-read the whole discussion at
http://www.mail-archive.com/cygwin%40cygwin.com/msg49835.html again,
and it's interesting how the point of view changes with another
testcase.  Pity.  Returning EBUSY really looked like a good idea.


Corinna

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

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