Bitblt>>copyBits

Craig Latta craig at netjam.org
Thu Feb 21 08:46:29 UTC 2008


 > > > there is virtually impossible to strip image to prevent it from
 > > > using BitBlt/morphic.
 > >
 > > I've done it, it's actually not that hard.
 >
 > Using automated process, and by taking any image?

      Yes and yes. I load code into the subject image for remote 
messaging, and use a VM which keeps track of which methods have been 
run, and with a garbage collector that doesn't mark methods which 
haven't been run. From a remote image, I invoke the GC in the subject 
image and all but about 300k of it falls away in one fell swoop.

      Also see 
http://lists.squeakfoundation.org/pipermail/spoon/2006-February/000105.html


-C

--
Craig Latta
improvisational musical informaticist
www.netjam.org
Smalltalkers do: [:it | All with: Class, (And love: it)]




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