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Maya Lekova authored
This reverts commit 1dd7f3a9. Reason for revert: Breaks TSAN - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN/32846? 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} TBR=ulan@chromium.org,dinfuehr@chromium.org Change-Id: I9719d565aaa313cd23f5e759dcef1246f475eb46 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:10315 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2362689Reviewed-by: Maya Lekova <mslekova@chromium.org> Commit-Queue: Maya Lekova <mslekova@chromium.org> Cr-Commit-Position: refs/heads/master@{#69451}
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