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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.
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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

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