I have taken a cursory look at the Tamarin source tree, and I observe
that Tamarin's GC is in a separate module called MMgc (the MM probably
stands for Macromedia). MMgc is written in C++ and has a C++ API, but
it may still be a useful alternative to Boehm GC. It begs the question
of why Macromedia/Adobe didn't use Boehm GC, given how long that package
has been around.
Matt
--
Neko : One VM to run them all
(http://nekovm.org)