> I making bitmap marking gc.
> This is same approach of REE(RubyEnterpriseEdition) GC.
> However, the different point is search technique of the bitmap position.
>
> The REE bitmap position search is a linear search[O(n)].
> But ruby 1.9.x heap slot fix 16KB. Thus, heaps contain many heap slot.
> Search time of the BitMap position becomes the problem more.

I wonder if something similar could be used for is_pointer_to_heap.

-=R