to get rid of the pattern
```
EnsureHash();
uint32_t field = raw_hash_field();
```
which requires an additional load and might be misleading in the
presence of forwarding indices for shared strings, as raw_hash_field()
can return a forwarding index, whereas EnsureRawHash() will always
return a computed hash value.
Bug: v8:12957
Change-Id: I33426fef433f774fb323d4381e784c1037fb6fbb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3829469
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82441}
The existing version for paged spaces simply reset the freelist, which
doesn't work for tests that require actual objects in the space.
The version for new space also doesn't work because it assumes
everything after top is free space.
Fill the space with FixedArray by iterating over the freelist and
creating an object in place of each freelist entry.
This method actually fills the space, so that we can also use it to
force page promotion.
Bug: v8:12612
Change-Id: Ie0d73e846bbf688ea52030be29e0587b2f37ed4e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3823135
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82437}
Now that we require C++17 support, we can just use the standard
static_assert without message, instead of our STATIC_ASSERT macro.
R=leszeks@chromium.org
Bug: v8:12425
Change-Id: I1d4e39c310b533bcd3a4af33d027827e6c083afe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3647353
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80524}
Add flag --always-use-string-forwarding-table to always use the
forwarding table (usually only used for shared strings) instead of
ThinString migrations initially (during GC strings will be migrated
to normal ThinStrings). The goal is to get more coverage of this code
that is designed for shared strings.
Bug: v8:12007
Change-Id: I7eb2e5ccf0018c4ac349611aebe337d8288de5c8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3536650
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80206}
Various cleanups around young generation GCs.
These include:
(*) Repalce minor_mark_compact_collector_ with a unique_ptr and merge
initialization with the mark_compact_collector_ and
scavenger_collector_.
(*) Rename IncrementalMarking::UpdateMarkingWorklistAfterScavenge to
IncrementalMarking::UpdateMarkingWorklistAfterYoungGenGC.
(*) Remove redundant MarkingTreatmentMode parameter from
MakeIterable.
Bug: v8:12612
Change-Id: Ifac7006d3425808a4b9e4c8e1af054a60c073180
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3448380
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79077}
The build flag is on by default and the actual functionality is guarded
by a runtime flag.
Bug: v8:12612
Change-Id: I6adbd5b766f502400af32eeeb035edca3a3606ef
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3448383
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79036}
We introduce a new information type ForwardingIndex to be stored in
the Name::Hash field (to be used in the future).
To do so we use the 2 least significant bit to distinguish types
of information stored in the hash field (in contrast to only bit 1
to distinguis integer indicies from "real" hashes).
This motivated a refactor to use base::BitField for the hash field.
Bug: v8:12007
Change-Id: I651c86807edfc218792d0db12379374eaa50c930
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3432385
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78975}
When sandboxed external pointers are enabled, external pointers now only
require 32 bits of storage space in a HeapObject. This CL does not shrink
the size of EmbedderDataSlots, which will happen in a follow-up CL.
Bug: v8:10391
Change-Id: I3cf8b68c3b985cf806a45183717f50462a88c281
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng,v8_linux_arm64_sim_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3359629
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78754}
- V8::Deprecate ShutdownPlatform in favor of V8::DisposePlatform
- Rename i::V8::TearDown to i::V8::Dispose
- Clean up i::V8::Initialize
- Remove needless V8::Initialize() calls in cctests
- Remove CcTest::DisableAutomaticDispose()
- Add checks to Isolate::Allocate and Isolate::Dispose that there is
and active platform
Change-Id: Iac84f9ade9d1781e9e8b8c88ea8fe74013f51c4a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3306482
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78162}
This is a reland of d1b27019d3
Fixes include:
Adding missing file to bazel build
Forward-declaring classing before friend-classing them to fix win/gcc
Add missing v8-isolate.h include for vtune builds
Original change's description:
> [include] Split out v8.h
>
> This moves every single class/function out of include/v8.h into a
> separate header in include/, which v8.h then includes so that
> externally nothing appears to have changed.
>
> Every include of v8.h from inside v8 has been changed to a more
> fine-grained include.
>
> Previously inline functions defined at the bottom of v8.h would call
> private non-inline functions in the V8 class. Since that class is now
> in v8-initialization.h and is rarely included (as that would create
> dependency cycles), this is not possible and so those methods have been
> moved out of the V8 class into the namespace v8::api_internal.
>
> None of the previous files in include/ now #include v8.h, which means
> if embedders were relying on this transitive dependency then it will
> give compile failures.
>
> v8-inspector.h does depend on v8-scripts.h for the time being to ensure
> that Chrome continue to compile but that change will be reverted once
> those transitive #includes in chrome are changed to include it directly.
>
> Full design:
> https://docs.google.com/document/d/1rTD--I8hCAr-Rho1WTumZzFKaDpEp0IJ8ejZtk4nJdA/edit?usp=sharing
>
> Bug: v8:11965
> Change-Id: I53b84b29581632710edc80eb11f819c2097a2877
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3097448
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#76424}
Cq-Include-Trybots: luci.v8.try:v8_linux_vtunejit
Bug: v8:11965
Change-Id: I99f5d3a73bf8fe25b650adfaf9567dc4e44a09e6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3113629
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76460}
This reverts commit d1b27019d3.
Reason for revert: Broke vtune build, tsan build and possibly others
Original change's description:
> [include] Split out v8.h
>
> This moves every single class/function out of include/v8.h into a
> separate header in include/, which v8.h then includes so that
> externally nothing appears to have changed.
>
> Every include of v8.h from inside v8 has been changed to a more
> fine-grained include.
>
> Previously inline functions defined at the bottom of v8.h would call
> private non-inline functions in the V8 class. Since that class is now
> in v8-initialization.h and is rarely included (as that would create
> dependency cycles), this is not possible and so those methods have been
> moved out of the V8 class into the namespace v8::api_internal.
>
> None of the previous files in include/ now #include v8.h, which means
> if embedders were relying on this transitive dependency then it will
> give compile failures.
>
> v8-inspector.h does depend on v8-scripts.h for the time being to ensure
> that Chrome continue to compile but that change will be reverted once
> those transitive #includes in chrome are changed to include it directly.
>
> Full design:
> https://docs.google.com/document/d/1rTD--I8hCAr-Rho1WTumZzFKaDpEp0IJ8ejZtk4nJdA/edit?usp=sharing
>
> Bug: v8:11965
> Change-Id: I53b84b29581632710edc80eb11f819c2097a2877
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3097448
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#76424}
Bug: v8:11965
Change-Id: Id57313ae992e720c8b19abc975cd69729e1344aa
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3113627
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76428}
This moves every single class/function out of include/v8.h into a
separate header in include/, which v8.h then includes so that
externally nothing appears to have changed.
Every include of v8.h from inside v8 has been changed to a more
fine-grained include.
Previously inline functions defined at the bottom of v8.h would call
private non-inline functions in the V8 class. Since that class is now
in v8-initialization.h and is rarely included (as that would create
dependency cycles), this is not possible and so those methods have been
moved out of the V8 class into the namespace v8::api_internal.
None of the previous files in include/ now #include v8.h, which means
if embedders were relying on this transitive dependency then it will
give compile failures.
v8-inspector.h does depend on v8-scripts.h for the time being to ensure
that Chrome continue to compile but that change will be reverted once
those transitive #includes in chrome are changed to include it directly.
Full design:
https://docs.google.com/document/d/1rTD--I8hCAr-Rho1WTumZzFKaDpEp0IJ8ejZtk4nJdA/edit?usp=sharing
Bug: v8:11965
Change-Id: I53b84b29581632710edc80eb11f819c2097a2877
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3097448
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76424}
This is a reland of 9701d4a420
with a small fix for some code landed in between the dry-run and
submission.
Original change's description:
> [base] Move most of src/numbers into base
>
> Moves all but conversions.*, hash-seed-inl.h and math-random.* into
> base, in preparation for moving the parts of conversions that don't
> access HeapObjects.
>
> Also moves uc16 and uc32 out of commons/globals.h into base/strings.h.
>
> Bug: v8:11917
> Change-Id: Ife359148bb0961a63833aff40d26331454b6afb6
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979595
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Auto-Submit: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75354}
Bug: v8:11917
Change-Id: Ie1ec9032fe56646a7c7303185cecc70fce5694ae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2982607
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75368}
This reverts commit 9701d4a420.
Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac64/40802/overview
Original change's description:
> [base] Move most of src/numbers into base
>
> Moves all but conversions.*, hash-seed-inl.h and math-random.* into
> base, in preparation for moving the parts of conversions that don't
> access HeapObjects.
>
> Also moves uc16 and uc32 out of commons/globals.h into base/strings.h.
>
> Bug: v8:11917
> Change-Id: Ife359148bb0961a63833aff40d26331454b6afb6
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979595
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Auto-Submit: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75354}
Bug: v8:11917
Change-Id: Iacf796c95256016fa74f0a910c5bb1a86baa425a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2982605
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75356}
Moves all but conversions.*, hash-seed-inl.h and math-random.* into
base, in preparation for moving the parts of conversions that don't
access HeapObjects.
Also moves uc16 and uc32 out of commons/globals.h into base/strings.h.
Bug: v8:11917
Change-Id: Ife359148bb0961a63833aff40d26331454b6afb6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979595
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75354}
The adding of base:: was mostly prepared using git grep and sed:
git grep -l <pattern> | grep -v base/vector.h | \
xargs sed -i 's/\b<pattern>\b/base::<pattern>/
with lots of manual clean-ups due to the resulting
v8::internal::base::Vectors.
#includes were fixed using:
git grep -l "src/utils/vector.h" | \
axargs sed -i 's!src/utils/vector.h!src/base/vector.h!'
Bug: v8:11879
Change-Id: I3e6d622987fee4478089c40539724c19735bd625
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2968412
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75243}
It was added years ago and in 2017 it was enabled by default[1], which
means enough time has passed and we can remove the flag.
[1]: https://chromium-review.googlesource.com/c/v8/v8/+/528076/
Change-Id: I059417d4683910e86ebfddd93f504006094fa342
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2947406
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75039}
cpplint rules change over time, and we change the exact rules we enable
for v8. This CL removes NOLINT annotations which are not needed
according to the currently enabled rules.
R=ahaas@chromium.org
Bug: v8:11717
Change-Id: Ica92f4ddc9c351c1c63147cbcf050086ca26cc07
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2859854
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74297}
During the string reverts a while back
https://chromium-review.googlesource.com/c/v8/v8/+/2633547 I reverted
some tests that were testing the code that was *not* reverted i.e. the
internalization of external strings.
Bug: v8:7790
Change-Id: I84964791cce712d753fd409cc3c641d9fbbb6550
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2699262
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72809}
This reverts commit 3a6f75ac94.
Reason for revert: performance regressions https://bugs.chromium.org/p/chromium/issues/detail?id=1163063
Original change's description:
> [objects] Remove MakeExternal case for uncached internal strings
>
> Concurrently accessing internal external uncached strings is not
> thread-safe. We are removing a case where we can make such a string
> through MakeExternal.
>
> Bug: v8:7790
> Change-Id: I958062c15cf40ccc330600bb572de98620866e54
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2565511
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71573}
TBR=leszeks@chromium.org,solanes@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:7790
Change-Id: I5dcc734869c3c921eacd89426309141127a85f47
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2633547
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72123}
This reverts commit b3d09001eb.
Reason for revert: https://chromium-review.googlesource.com/c/v8/v8/+/2565511 has to be reverted, and this was a follow-up to that
Original change's description:
> [objects] Remove uncached internal external string type
>
> We shouldn't be creating those anymore since they are not thread-safe.
>
> Bug: v8:7790
> Change-Id: I4546d995fa32eb076c8dfe9d95301fad719c9e07
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2615347
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72006}
TBR=rmcilroy@chromium.org,leszeks@chromium.org,solanes@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:7790
Change-Id: I4eb1a6b8446fa602eeb5bf29fbf1fe57182cdbf3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627605
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72122}
This reverts commit 37c3e05e81.
Reason for revert: https://chromium-review.googlesource.com/c/v8/v8/+/2565511 has to be reverted, and this was a follow-up to that
Original change's description:
> [test] Update MakeExternal tests
>
> They weren't initializing the VM at the start of the test. Also updated
> the test description.
>
> Bug: v8:7790
> Change-Id: I7b9df9e3aebb43fc526e16ec260aa071c0fdeb92
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2615019
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71978}
TBR=leszeks@chromium.org,solanes@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:7790
Change-Id: I35bc0090c3beed4ef11a458f0e26c44b22f7b654
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627606
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72114}
We shouldn't be creating those anymore since they are not thread-safe.
Bug: v8:7790
Change-Id: I4546d995fa32eb076c8dfe9d95301fad719c9e07
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2615347
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72006}
They weren't initializing the VM at the start of the test. Also updated
the test description.
Bug: v8:7790
Change-Id: I7b9df9e3aebb43fc526e16ec260aa071c0fdeb92
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2615019
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71978}
In order to avoid internal external uncached Strings, we can copy the
String at the moment of internalizing if it is an external & uncached
String.
Bug: v8:7790
Change-Id: Ie7ed287c105a127b8b4c867aab1a808265a922b7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2613029
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71977}
Concurrently accessing internal external uncached strings is not
thread-safe. We are removing a case where we can make such a string
through MakeExternal.
Bug: v8:7790
Change-Id: I958062c15cf40ccc330600bb572de98620866e54
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2565511
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71573}
Apart from removing Min and Max (utils.h), this is mostly a renaming.
In a few cases I had to add a cast. In a bunch of cases I had to use
initializer lists to force call-by-value for static member constants
because call-by-reference wouldn't compile (like in the previous CL).
In a few places I used initializer lists in place of nested min/max
operations.
Bug: v8:11074
Change-Id: I53a5411be6334ff41e7a8517e6b87fb46f14d086
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2545523
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71380}
Because of LocalHeap safepoints, our existing assert scopes don't
necessarily maintain the same guarantees as desired. In particular,
DisallowHeapAllocation no longer guarantees that objects don't move.
This patch transitions DisallowHeapAllocation to
DisallowGarbageCollection, to ensure that code using this scope is
also protected against safepoints.
Change-Id: I0411425884f6849982611205fb17bb072881c722
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2540547
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71319}
... and use Name::hash() where the hash is expected to be computed.
In particular, when we are dealing with internalized strings or symbols.
Bug: v8:11074
Change-Id: Ida22f134fee0ddf2c9b962d1bcca6aa0b632af5f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2529451
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71200}
This CL
* renames Name::hash_field field to raw_hash_field.
* all local variables that store raw_hash_field value are also renamed
to raw_hash_field where possible.
Bug: chromium:1133527, v8:11074
Change-Id: I17313f386110b33a64f629cc2b9d4afd1e06c6c0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2471999
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71114}
Tests that use SimulateFullSpace and SealCurrentObjects do not work
if there is a background thread allocating concurrently.
Bug: v8:10315
Change-Id: I73a4c9db8eb32fdf3e07fcb8f5dda309de797709
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2390765
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69693}
Changes the isolate's string table into an off-heap structure. This
allows the string table to be resized without allocating on the V8 heap,
and potentially triggering a GC. This allows existing strings to be
inserted into the string table without requiring allocation.
This has two important benefits:
1) It allows the deserializer to insert strings directly into the
string table, rather than having to defer string insertion until
deserialization completes.
2) It simplifies the concurrent string table lookup to allow resizing
the table inside the write lock, therefore eliminating the race
where two concurrent lookups could both resize the table.
The off-heap string table has the following properties:
1) The general hashmap behaviour matches the HashTable, i.e. open
addressing, power-of-two sized, quadratic probing. This could, of
course, now be changed.
2) The empty and deleted sentinels are changed to Smi 0 and 1,
respectively, to make those comparisons a bit cheaper and not
require roots access.
3) When the HashTable is resized, the old elements array is kept
alive in a linked list of previous arrays, so that concurrent
lookups don't lose the data they're accessing. This linked list
is cleared by the GC, as then we know that all threads are in
a safepoint.
4) The GC treats the hash table entries as weak roots, and only walks
them for non-live reference clearing and for evacuation.
5) Since there is no longer a FixedArray to serialize for the startup
snapshot, there is now a custom serialization of the string table,
and the string table root is considered unserializable during weak
root iteration. As a bonus, the custom serialization is more
efficient, as it skips non-string entries.
As a drive-by, rename LookupStringExists_NoAllocate to
TryStringToIndexOrLookupExisting, to make it clearer that it returns
a non-string for the case when the string is an array index. As another
drive-by, extract StringSet into a separate header.
Bug: v8:10729
Change-Id: I9c990fb2d74d1fe222920408670974a70e969bca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339104
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69270}
In many cases, this simply requires early returning from tests which
rely on scavenger.
Bug: v8:10614
Change-Id: I5fc93b1cbc807b73bfbb113d087952e347001ddd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2270548
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Jake Hughes <jakehughes@google.com>
Cr-Commit-Position: refs/heads/master@{#68702}
String::NewFromLiteral is a templated function that takes a char[N]
argument that can be used as an alternative to String::NewFromUtf8 and
returns a Local<String> rather than a MaybeLocal<String> reducing the
number of ToLocalChecked() or other checks.
Since the string length is known at compile time, it can statically
assert that the length is less than String::kMaxLength, which means that
it can never fail at runtime.
This also converts all found uses of NewFromUtf8 taking a string literal
or a variable initialized from a string literal to use the new API. In
some cases the types of stored string literals are changed from const
char* to const char[] to ensure the size is retained.
This API does introduce a small difference compared to NewFromUtf8. For
a case like "abc\0def", NewFromUtf8 (using length -1 to infer length)
would treat this as a 3 character string, whereas the new API will treat
it as a 7 character string.
As a drive-by fix, this also fixes all redundant uses of
v8::NewStringType::kNormal when passed to any of the String::New*
functions.
Change-Id: Id96a44bc068d9c4eaa634aea688e024675a0e5b3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2089935
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66622}
The scope disables garbage collection and should be only used in
heap, deserializer, isolate bootstrap, and testing.
Change-Id: Ide95926ef32fd9362cd9134e883e1bd626cc3b11
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2083292
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66557}
By replacing usage of the IsNotArrayIndex bit with IsNotIntegerIndex,
we get back one bit that we can use to increase the number of hash bits
stored. The price is that strings that represent array/integer indices
beyond the cacheable range will have to be scanned more often, but these
strings should be rare, and we expect that the additional hash bit is
more worthwhile to have.
Bug: v8:9904
Change-Id: I33f74b0a73f4754aee85805d4b7c409177668439
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051947
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66299}
This is useful for the upcoming "huge TypedArrays" support, to be able
to quickly decide in stubs/generated code whether a string used as the
key for a property load/store can possibly be an exotic integer index.
Bug: v8:4153
Change-Id: I50ce655d2f78fb36e5615fd580f22c9290216c84
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1821460
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64165}
The latter is better because it takes field type into account when
decompressing field value.
Drive-by: use [DECL_]ACCESSOR macros for some fields.
Bug: v8:9353
Change-Id: I3d7f07d11b1e379e3e6cf0310d836af6b48c1338
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1680539
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62444}
The new API function is called ConfigureDefaultsFromHeapSize and
accepts two parameters: the initial and the maximum heap size.
Based on the given limits the function computes the default size
for the young and the old generation.
The patch also cleans up the existing functions to make them
consistent in terms of units and heap structure.
Bug: v8:9306
Change-Id: If2200a9cdb45b0b818a373207efe4e6426f7b688
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1631593
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62017}
This CL was generated by an automatic clang AST rewriter using this
matcher expression:
callExpr(
callee(
cxxMethodDecl(
hasName("operator->"),
ofClass(isSameOrDerivedFrom("v8::internal::Object"))
)
),
argumentCountIs(1)
)
The "->" at the expression location was then rewritten to ".".
R=jkummerow@chromium.orgTBR=mstarzinger@chromium.org,verwaest@chromium.org,yangguo@chromium.org
Bug: v8:9183, v8:3770
No-Try: true
No-Tree-Checks: true
Change-Id: I0a7ecabdeafe51d0cf427f5280af0c7cab96869e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1624209
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61764}
