X-Recipient: archive-cygwin AT delorie DOT com
X-Spam-Check-By: sourceware.org
Date: Wed, 3 Aug 2011 22:25:26 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: git-svn hang starting with 20110721 snapshot.
Message-ID: <20110803202526.GD18612@calimero.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <4E383AC9 DOT 4000406 AT acm DOT org> <20110803084427 DOT GA999 AT calimero DOT vinschen DOT de> <20110803134528 DOT GA27354 AT ednor DOT casa DOT cgf DOT cx> <20110803140013 DOT GA27420 AT ednor DOT casa DOT cgf DOT cx> <20110803180231 DOT GA481 AT ednor DOT casa DOT cgf DOT cx> <4E399617 DOT 7020900 AT acm DOT org> <20110803190314 DOT GB18612 AT calimero DOT vinschen DOT de> <1312401761 DOT 7008 DOT 17 DOT camel AT YAAKOV04> <20110803201952 DOT GC18612 AT calimero DOT vinschen DOT de>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
In-Reply-To: <20110803201952.GC18612@calimero.vinschen.de>
User-Agent: Mutt/1.5.21 (2010-09-15)
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

On Aug  3 22:19, Corinna Vinschen wrote:
> On Aug  3 15:02, Yaakov (Cygwin/X) wrote:
> > On Wed, 2011-08-03 at 21:03 +0200, Corinna Vinschen wrote:
> > > Better drop the large address stuff for now.  Since the heap is now in
> > > the large addres area(*), and since mmaps will go there, too(*), we have
> > > basically a lot more free space in the area up to 0x7fffffff.
> > 
> > At this moment, I've got DLLs from 0xf0000000 all the way down to
> > 0xa1740000, and I could easily have more if I installed all of KDE
> > (which I provide in Ports, but I prefer to use GNOME).  So where do you
> > suggest I find that kind of open space in the lower half?
> 
> Did you use the current rebaseall?  If so you have a 64K hole between
> each DLL.  Other than that I don't have an answer for you.  There's only
> so much you can do within the 32 bit address space.  That's only one
> reason why a 64 bit Cygwin would be a good idea.

Of course there are other answers, but their implementation is really
tricky:

- Analyze all executables and rebase DLLs which are not used together
  in the same executable to the same addresses.  Not good for runtime
  loading.

- Replace the Windows loader with your own loader in Cygwin.  You'll
  never have to rebase again.


Corinna

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

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple