Bug: chromium:897074
Change-Id: I65894046064a230847f3e629e56d8a171546aa51
Reviewed-on: https://chromium-review.googlesource.com/c/1293950Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56877}

Bug: chromium:842083
Change-Id: I7f3d7cb64c1263e081d1f9bd36939aaf1a0e3da8
Reviewed-on: https://chromium-review.googlesource.com/1135322
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54443}

This reverts commit 770ace07.

Reason for revert: Breaking the V8 Arm and V8 Arm - debug builds https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Arm%20-%20debug/7260

Original change's description:
> [heap] Cleanup: Use std::atomic<T> instead of base::AtomicValue<T> in heap/*.
> 
> Bug: chromium:842083
> Change-Id: Idc04f9ddea326df4ac48a8c58321620660b21549
> Reviewed-on: https://chromium-review.googlesource.com/1129520
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Hannes Payer <hpayer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54389}

TBR=ulan@chromium.org,hpayer@chromium.org,mlippautz@chromium.org

Change-Id: I108bc5386ea825c2700f9b830b85a1ca8c10bf4b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:842083
Reviewed-on: https://chromium-review.googlesource.com/1134966Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54398}

Bug: chromium:842083
Change-Id: Idc04f9ddea326df4ac48a8c58321620660b21549
Reviewed-on: https://chromium-review.googlesource.com/1129520Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54389}

Bug: chromium:842083
Change-Id: Ided2d8542e4501250208dde6146f00da77410f48
Reviewed-on: https://chromium-review.googlesource.com/1054234Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53121}

This is a reland of 12420537

Original change's description:
> [heap] fix Sweeper::kNumberOfSweepingSpaces
> 
> When indexing into vectors of sweeping spaces, convert the
> AllocationSpace to an index (by subtracting FIRST_GROWABLE_PAGED_SPACE)
> to avoid wasted space at the start.
> 
> Change-Id: Ia23fe6dae42d5accea9f7fe7ec5c3b303ef857b4
> Reviewed-on: https://chromium-review.googlesource.com/978242
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52320}

Change-Id: Ic8ea2d58b9d4cfe97eb8efec93df101b734d5ddd
Reviewed-on: https://chromium-review.googlesource.com/994214Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52354}

This reverts commit 12420537.

Reason for revert: MSAN complains
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/20527

Original change's description:
> [heap] fix Sweeper::kNumberOfSweepingSpaces
> 
> When indexing into vectors of sweeping spaces, convert the
> AllocationSpace to an index (by subtracting FIRST_GROWABLE_PAGED_SPACE)
> to avoid wasted space at the start.
> 
> Change-Id: Ia23fe6dae42d5accea9f7fe7ec5c3b303ef857b4
> Reviewed-on: https://chromium-review.googlesource.com/978242
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52320}

TBR=hpayer@chromium.org,delphick@chromium.org

Change-Id: I9894dc10f122c9fab409e08b2a45389f1f51748f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/992152Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52323}

When indexing into vectors of sweeping spaces, convert the
AllocationSpace to an index (by subtracting FIRST_GROWABLE_PAGED_SPACE)
to avoid wasted space at the start.

Change-Id: Ia23fe6dae42d5accea9f7fe7ec5c3b303ef857b4
Reviewed-on: https://chromium-review.googlesource.com/978242Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52320}

Moves RO_SPACE to the front of the AllocationSpace enum, so the space
pre-allocation iterations don't miss it. Being at the start of the enum
means that it continues to not be iterated over by any sweeper code,
which iterates from FIRST_GROWABLE_PAGED_SPACE to
LAST_GROWABLE_PAGED_SPACE (renamed from FIRST_PAGED_SPACE and
LAST_PAGED_SPACE).

Bug: v8:7464
Change-Id: I480ba784afbd878552d1cb7f9f5fa57c3b55e004
Reviewed-on: https://chromium-review.googlesource.com/973604
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52177}

Separates restoring iterability from sweeping a page. Since the set
of pages where iterability needs to be restored is small, it is
possible to wait and block for the task to finish if necessary.

A follow up change can now remove the fragile logic for delaying
unmapping of pages since it is guaranteed that no background task
keeps a reference to a page for restoring iterability.

Bug: chromium:791043
Change-Id: Ifba45594cc586df3c99e1bbb20a13b44c18dd9a1
Reviewed-on: https://chromium-review.googlesource.com/796419
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49826}

R=ulan@chromium.org

Bug: 
Change-Id: Ifba0b1bb649f0ee90fc76f738b7912d300c77447
Reviewed-on: https://chromium-review.googlesource.com/796470Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49716}

Bug: 
Change-Id: Ie516167f047e48cda47a5dbfb156ea9ae164046c
Reviewed-on: https://chromium-review.googlesource.com/789878Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49656}