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Date:	Wed, 19 May 2004 09:27:51 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Unsufficient number of semaphores in a set
Message-ID:	<20040519072751.GH1387@cygbert.vinschen.de>
Reply-To:	cygwin AT cygwin DOT com
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References:	<c8e8ft$5ij$1 AT sea DOT gmane DOT org>
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In-Reply-To:	<c8e8ft$5ij$1@sea.gmane.org>
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On May 19 02:08, Krzysztof Duleba wrote:
> Hello
> 
> I expreience strange Cygwin behaviour when I try to create a big semaphore
> set. I wrote a simple test case as following:
> [...]
> My Cygwin returns:
> 
> $ echo 59|./semtest
> ok
> 
> $ echo 60|./semtest
> ok
> 
> $ echo 61|./semtest
> 22; Invalid argument
> 
> 
> 
> On my friend's Linux box:
> 
> $ echo 61|./semtest
> ok
> $ echo 250|./semtest
> ok
> $ echo 251|./semtest
> 22; Invalid argument
> 
> 
> In /usr/include/cygipc/sys one can find
> 
> #define SEMMSL  32              /* <= 512 max num of semaphores per id */
> 
> It's obviously not the case. How can I have Cygwin allowing semaphore set
> of size 250?

First question:  Are you using cygipc or cygserver?

If you're using cygipc, somebody else will have to answer your question.

If you're using cygserver, the include files in /usr/include/cygipc
are irrelevant.  Look into /usr/include/sys.  If you want to change
the values, reading /usr/share/doc/Cygwin/cygserver.README will help.


Corinna

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

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