Experimenting with incrementing live_byte_count_ using a relaxed CAS
operation. If no regression is found, we could get away with background
threads increasing that counter directly, instead of using separate
counters like concurrent markers.

Bug: v8:10315
Change-Id: I2e7a1f941a728f59d6e1fbd686d2eeb01ea4378a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2201765Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67809}

Also adds missing header includes.

Bug: v8:10473
Change-Id: Ib5bf599dae5bc954edcb6e6fcbd83004bd48c1eb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2199347
Auto-Submit: Dan Elphick <delphick@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67792}

Add const Page iterators to Spaces, and add whichever const methods are
necessary for this to work. This and a couple more const methods allows
us to make Heap::Contains const.

Change-Id: I1b63a10575ccdb8a3979aef4fa63a97b288ff836
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2198975
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67776}

BasicMemoryChunk will become the base class for ReadOnlySpace pages
which won't be MemoryChunks. Since ReadOnlySpace pages don't participate
in GC they don't need slot_set_.

Also some references to BasicMemoryChunk fields that were still prefixed
with MemoryChunk::

Bug: v8:10454
Change-Id: If8ce40c7ee72d1617d2a1161ad9d4b7929f8a8e7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2198988
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67774}

This is a reland of afd9493a

LSAN_IGNORE_OBJECTs for FreeListCategories are now removed.

Original change's description:
> [heap] Remove FreeList when sealing RO_SPACE
>
> This releases the FreeListCategories for each MemoryChunk when sealing
> the ReadOnlySpace and deletes the FreeList.
>
> Additionally this also calls
> ReleaseAllocatedMemoryNeededForWritableChunk for each MemoryChunk when
> sealing when pointer compression is enabled even if no memory is to be
> shared.
>
> Bug: v8:10454
> Change-Id: I45aec59f6d4fddedeb713e13095f58974cda279e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2184292
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67598}

Bug: v8:10454
Change-Id: I08fcd122437c65c01af526fa8316d5c9e3ebeb3b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2184297
Commit-Queue: Dan Elphick <delphick@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67613}

This reverts commit afd9493a.

Reason for revert: Speculative revert due to https://ci.chromium.org/p/v8/builders/ci/V8%20Clusterfuzz%20Linux%20ASAN%20arm%20-%20debug%20builder/14978?

Original change's description:
> [heap] Remove FreeList when sealing RO_SPACE
> 
> This releases the FreeListCategories for each MemoryChunk when sealing
> the ReadOnlySpace and deletes the FreeList.
> 
> Additionally this also calls
> ReleaseAllocatedMemoryNeededForWritableChunk for each MemoryChunk when
> sealing when pointer compression is enabled even if no memory is to be
> shared.
> 
> Bug: v8:10454
> Change-Id: I45aec59f6d4fddedeb713e13095f58974cda279e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2184292
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67598}

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

Change-Id: I135c1ebc2340a75a30305b84625710ef14d9cdb3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10454
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2183921Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67603}

This releases the FreeListCategories for each MemoryChunk when sealing
the ReadOnlySpace and deletes the FreeList.

Additionally this also calls
ReleaseAllocatedMemoryNeededForWritableChunk for each MemoryChunk when
sealing when pointer compression is enabled even if no memory is to be
shared.

Bug: v8:10454
Change-Id: I45aec59f6d4fddedeb713e13095f58974cda279e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2184292Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67598}

Removes spurious self-include in src/heap/memory-chunk.h

Bug: v8:10473
Change-Id: I0bdf3b6b62f3b3a241225a99d681ddc1f1bd6bc5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2181329
Auto-Submit: Dan Elphick <delphick@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67579}

Also makes memory-chunk.h accessible from outside heap which allows
removal of some heap-inl.h includes.

Bug: v8:10473, v8:10496
Change-Id: Iec4fc5ce8ad201f6ee5fd924cc3cd935324429fc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2172088
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67551}