Doubling up pointers

"Jon Harrop" <[email protected]> Wed, 14 Sep 2011 18:09:24 +0100
Newsgroups gmane.comp.programming.garbage-collection.general
Message-ID <[email protected]>
In the context of taking a snapshot of the topology of the heap, I'm
wondering if anyone has considered or tried replacing each pointer with a
pair of pointers and having the mutators work on the first/second of each
pair while the GC traverses the second/first of each pair?

-- 
Dr Jon Harrop, Flying Frog Consultancy Ltd.
http://www.ffconsultancy.com