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Ulan Degenbaev authored
This is a reland of 1dd7f3a9 Original change's description: > [heap] Add concurrent marking write barrier > > A LocalHeap creates and owns an instance of MarkingBarrier. A pointer to > the marking barrier is set to a thread_local variable for a quick access. > > WriteBarrier::MarkingSlow fetches the thread_local variable and invokes > the write barrier if it is set. Otherwise, it invokes the main thread > heap()->marking_barrier(). > > Each marking barrier has its own local marking worklist that is > published during scavenge (for updating pointers) and at finalization > of incremental marking. > > Typed-slot recording does not work yet because it is not thread-safe. > It will be fixed in a subsequent CL. > > Bug: v8:10315 > Change-Id: I221a906436cd91e7405a253ce0eb06cf68046f2c > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2354809 > Commit-Queue: Ulan Degenbaev <ulan@chromium.org> > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org> > Cr-Commit-Position: refs/heads/master@{#69448} Bug: v8:10315 Change-Id: I155bb0aadd53a5333672fb085b33d8da86f3f336 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2364509Reviewed-by: Dominik Inführ <dinfuehr@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#69517}
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