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Mail Archives: cygwin/2004/08/05/05:15:21

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Date: Thu, 5 Aug 2004 11:15:23 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: question about shared memory in the cygwin daemon
Message-ID: <20040805091523.GF24647@cygbert.vinschen.de>
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References: <A5F4BEF689E6FA47BC56396D0B9F15057F15D7 AT daytonmsg2k DOT aero DOT ball DOT com>
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On Aug  4 14:53, Clarke, Trevor wrote:
> 
> We currently run on 32bit windows and 32/64but solaris with near future
> plans to run on 64bit windows. The product is for a specific client so
> we can assume 4gb or more of physical ram.

You can't access more than 2GB (or 3GB with the appropriate kernel flag)
from any 32 bit Windows process.  Since Cygwin's shared memory capabilities
are restricted to what the operating system allows, Cygwin won't change that
for you.  When running Cygwin on Windows 64, it's still a 32 bit DLL, only
linkable with 32 bit applications so the usual 32 bit restrictions still
apply.

Just as a friendly reminder, since you're talking about using Cygwin in
an apparently proprietary project, I'd like to point you to the Cygwin
licensing terms:  http://cygwin.com/licensing.html  


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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