Dominik Inführ 93f28d16c7 Reland "[heap] Optimize time to reach global safepoint" ... This is a reland of 86038ecfdc Compared to the previous CL this one is adding a TSAN suppression for GlobalSafepoint::EnterSafepointScope. local_heaps_mutex_ of client isolates may be locked in any order. This would be detected by TSAN as a potential race. Add some additional DCHECKs to compensate for that missing test coverage. As a cleanup this CL also removes the unused methods ContainsLocalHeap() and ContainsAnyLocalHeap() from LocalHeap. Original change's description: > [heap] Optimize time to reach global safepoint > > Initial support for global safepoints kept it simple by entering a > safepoint for each of them one after another. This means > time-to-global-safepoint is the sum of all time-to-safepoint operations. > We can improve this slightly by splitting up the safepoint iteration > into two operations: > > 1) Initiate safepoint lock (locks local_heaps_mutex_, arms the barrier > and sets SafepointRequested flag for all client threads) > 2) Block until all runnning client threads reach a safepoint > > We now perform operation 1) for all clients first and only then start > with operation 2). > > Bug: v8:11708 > Change-Id: Iaafd3c6d70bcf7026f722633e9250b04148b3da6 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3310910 > Reviewed-by: Michael Lippautz <mlippautz@chromium.org> > Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> > Cr-Commit-Position: refs/heads/main@{#78308} Bug: v8:11708, v8:12492 Change-Id: I7087ba23c08f2d4edb9b632eef3c218fc76342e7 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3328786 Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Cr-Commit-Position: refs/heads/main@{#78583}		2022-01-12 10:35:25 +00:00
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sancov_formatter_test.py
sancov_formatter.py	[respect] Stop using "blacklist" in several python tools	2020-07-10 19:11:36 +00:00
sancov_merger_test.py
sancov_merger.py	Preparing v8 to use with python3 /tools	2019-02-19 09:12:07 +00:00
sanitize_pcs.py	Preparing v8 to use with python3 /tools	2019-02-19 09:12:07 +00:00
tsan_suppressions.txt	Reland "[heap] Optimize time to reach global safepoint"	2022-01-12 10:35:25 +00:00