[Webkit-unassigned] [Bug 161581] Speed up GC by using indexed collections to track MarkedBlock::Handles and WeakSets and using bitvectors to track their states

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=161581

--- Comment #1 from Filip Pizlo <fpizlo at apple.com> ---
Another benefit of this approach is that on-the-fly retirement during marking will now be a CAS to clear the can-allocate bit rather than some crazy locking.

Maybe we can even make the clearing of the can-allocate bit racy.  In the worst case, we would forget that we had retired some blocks.  That's not the end of the world.

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