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From Etienne Gagnon <egag...@sablevm.org>
Subject Re: [drlvm] Class unloading support - tested one approach
Date Thu, 09 Nov 2006 12:28:07 GMT
Alexey Varlamov wrote:
> Sorry if it was already discussed, but I believe this approach also
> requires marking vtable bit/byte on each object allocation, unitl the
> "unloading" GC pass is strictly stop-the-world full-heap collection.
> Robin, did you include this particular overhead too in your
> measurements?

My proposal already argued that vtable bit/byte/word marking is
unnecessary for "nursery allocations".  You only need to mark the vtable
of objects that survive collection and pretenured objects.

Etienne

-- 
Etienne M. Gagnon, Ph.D.            http://www.info2.uqam.ca/~egagnon/
SableVM:                                       http://www.sablevm.org/
SableCC:                                       http://www.sablecc.org/

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