This reverts commit 1ea76c1397.
Reason for revert: The unit test added fails on the Fuchsia bot https://ci.chromium.org/p/v8/builders/ci/V8%20Fuchsia/25976?
Original change's description:
> Implement a fake virtual memory cage mechanism
>
> On operating systems where reserving virtual address space is expensive,
> notably Windows pre 8.1, it is not possible to create a proper virtual
> memory cage. In order to still be able to reference caged objects
> through offsets from the cage base on these systems, this CL introduces
> a fake cage mechanism. When the fake cage is used, most of the virtual
> memory for the cage is not actually reserved. Instead, the cage's page
> allocator simply relies on hints to the OS to obtain pages inside the
> cage. This does, however, not provide the same security benefits as a
> real cage as unrelated allocations might end up inside the cage.
>
> Bug: chromium:1218005
> Change-Id: Ie5314be23966ed0042a017917b63595481b5e7e3
> 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/+/3217200
> Commit-Queue: Samuel Groß <saelo@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77367}
Bug: chromium:1218005
Change-Id: I541bb9656ab2a6a080c2a30d372226fcc5c95391
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng,v8_linux_arm64_sim_heap_sandbox_dbg_ng
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Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3219086
Auto-Submit: Deepti Gandluri <gdeepti@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#77368}
On operating systems where reserving virtual address space is expensive,
notably Windows pre 8.1, it is not possible to create a proper virtual
memory cage. In order to still be able to reference caged objects
through offsets from the cage base on these systems, this CL introduces
a fake cage mechanism. When the fake cage is used, most of the virtual
memory for the cage is not actually reserved. Instead, the cage's page
allocator simply relies on hints to the OS to obtain pages inside the
cage. This does, however, not provide the same security benefits as a
real cage as unrelated allocations might end up inside the cage.
Bug: chromium:1218005
Change-Id: Ie5314be23966ed0042a017917b63595481b5e7e3
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/+/3217200
Commit-Queue: Samuel Groß <saelo@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77367}
assume_aligned allows the caller may assume alignment of the allocation
methods.
Bug: v8:12295
Change-Id: I0c946dd668ae9c0c1d83da7278ad8d87bab96717
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3218984
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77366}
Adds support for double-word aligned, i.e., 8 bytes on 32-bit
platforms and 16 bytes on 64-bit platforms, objects in Oilpan.
Changes:
- Adds generic alignment APIs and overrides.
- Internal logic to support double-word aligned allocations on LABs.
- Adjusts natural alignment of large objects to follow double-word.
- Adds a new static_assert() that suggests users file a bug if higher
alignment is required.
- Statically checks that no allocations with non-default alignment
target custom spaces that support compaction.
Bug: v8:12295
Change-Id: I05766ce2349055d5d78b68919be00e7ee91d5505
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3218150
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77348}
Used to be needed for streaming but we don't use it anymore.
Change-Id: I0947155bec38a6b329452e42204f07170a72c155
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3217195
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77339}
This CL reorders the initialization scheme for shared and client
Isolates such that clients attach to the shared Isolate before
setting up the Heap. This is to support sharing the string table.
Bug: v8:12007
Change-Id: Icb0e40cc5ed84d516c8073a70d0f769f517044c9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3039264
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77307}
WebAssembly dynamic tiering should be tested with an origin trial. For
the origin trial the feature flag value has to be loaded from blink.
This CL stores the value of the --wasm-dynamic-tiering flag in the
compilation state, from where it gets passed forward to all uses of the
flag. The flag value gets loaded from blink when a new NativeModule is
created.
R=clemensb@chromium.org
Bug: v8:12281
Change-Id: Ia26355a665b7dfcdb47144863c1bec296774abb2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3204963
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77256}
IsActive is misleading as the current implementation forces to use
v8::Locker for all Isolate access once any Locker has been used in
the same process.
Bug: chromium:1240851
Change-Id: Ieb2cfa352313b6f2cbec1bafdbc94a3fc718f3d6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3190093
Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77243}
There is a demand of access to %Array.prototype% in Blink in
order to implement Web IDL observable array type.
Bug: chromium:1201744
Change-Id: I31ca5cd746f3a2eab8bd291741408a1dea17c122
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3194025
Auto-Submit: Yuki Shiino <yukishiino@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77200}
This CL adds a getStorageIfAligned method to obtaining a typed pointer
to the underlying TypedArray data, if the pointer to it is properly
aligned.
Bug: chromium:1052746
Change-Id: Ie8cb3438135b0da060e2b42ec71bba0e72ae4f5e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3195875
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77184}
Off heap members are "safe" to reference dead objects since they are not
connected to the object graph and do not ressurect the object.
This is needed becuase Members are used as temporary on stack variables
in Blink, e.g. when querying if a HeapHashMap contains a key.
Bug: v8:11749
Change-Id: I7ab2559d00c366480a3efbc0512bb1d1f63b64e7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3182223
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77063}
The CL provides a way for the embedder to hook in a special malloc-like
allocator that will be used for zone allocations.
An alternative approach would be to use weak functions with branches,
checking whether the functions were available at link-time. Those
branches could be optimized away with LTOs, so they would essentially
be free. However, the weak function approach is not portable (e.g.
there is no easy way to emulate it with msvc). The approach can be
revisited if indirect call turns out to be expensive (e.g. on hardware
with weak branch target predictors).
The CL is a prerequisite for running PCScan in the renderer process.
Bug: chromium:1249550
Change-Id: I221dcb2486c13e8e6e6761839ba391978319bde4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3172760
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77012}
This bailout applies only when young generation is disabled.
Otherwise, getting the caged heap is required and the global load
bailout becomes redundant.
Bug: chromium:1056170, chromium:1239030
Change-Id: I826b355f4356a5c20812d9c8bf6ebc7ea0997b8a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3173685
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77006}
This CL exposes the size of the virtual memory cage to the embedder
through V8::GetVirtualMemoryCageSizeInBytes(). This will for example be
useful to collect metrics about the cage reservation, such as how
frequently it fails, in the future. While collecting these metrics
directly in V8 would also be possible, it would require access to an
Isolate, which is not yet available when the cage is initialized. As
such, it is easier to enable the embedder to collect these metrics.
Bug: chromium:1218005
Change-Id: Ie9c9ca7d1cd158ec024be6ab2418f50083b06d6e
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng
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Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76969}
Use <iosfwd> where possible, in particular in public headers
(include/v8-*.h).
R=cbruni@chromium.org
Bug: v8:11879
Change-Id: I9d6095e6385229763d667f5064a794d67952b2b0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3160517
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76956}
At least for the initial rollout, we will gracefully handle cage
reservation failures by shrinking the size of the cage until the
reservation succeeds or the size drops below the mimimum cage size. This
will allow collecting statistics on how often cage reservation failures
occur in practice for different cage sizes, which will in turn influence
the decision on how to handle them in the future.
Bug: chromium:1218005
Change-Id: Ica58951ba51ac01bc2c387b34dfc8d9051ed4d75
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3168347
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76948}
.. for more efficient access to builtins from generated code.
Root-relative accesses tend to be faster and produce more compact
code when the root-relative offset is small. IsolateData contains
a few large tables (roots, external references, builtins), resulting
in very large offsets in general.
This CL starts by splitting the builtin table into tiers: tier 0
is a minimal set of perf-critical builtins that should be cheap to
access. The offset to tier 0 builtins is guaranteed to be small.
The full builtin table also remains in IsolateData for occasions in
which we need to lookup builtins by index.
In future work, we can also split external references and roots into
tiers.
On x64, this reduces deopt exit sizes from 7 to 4 bytes and from 12
to 9 bytes (dynamic map checks / EagerWithResume deopts).
Bug: v8:12203,v8:8661
Change-Id: I5a9ed22b0e00682aca1abcf15892ae1458dbdd70
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3162142
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76947}
Instead of explicitely splitting the cage into two separate regions, we
now just create a single BoundedPageAllocator to manage the entire
address range of the cage, then allocate the first 4GB for the pointer
compression cage.
Bug: chromium:1218005
Change-Id: I02c53ca8b6dda9074ae6caccc74c32bd6271d4d2
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng
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Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76900}
Refactor TryCopyAndConvertArrayToCppBuffer to avoid using a CTypeInfo*
pointer as template argument. Use instead a uint32 encoded value
sufficient to reconstruct the CTypeInfo.
Bug: v8:11739
Change-Id: I74052e59b3fa5ebed00cdb938504ba1947d959d7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3138832
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76887}
GetWriteBarrierType used to consider the slot so that a barrier is not
triggered for on-stack slots. For strongifying weak collections we want
the write barrier to trigger even if the backing store is only reachable
from stack.
Blink counterpart: crrev.com/c/3162170
Bug: chromium:1244057
Change-Id: I75b1ca62ad5de7bae3d2f4c1a9acce839f3ccdc1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3162127
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76872}
Removes include now that chrome is not transitively including the header
via v8-inspector.h.
Bug: v8:11965
Change-Id: Ice039f54f2b97e6fba8765c5220d3145c10ba073
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3141585
Auto-Submit: Dan Elphick <delphick@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76693}
Fix delegation to the specific slow-path bailout.
Note: This was not an issue in Blink production code but only when
using `cppgc_enable_object_names = true`.
Bug: chromium:1056170
Change-Id: I00db63f015b60ac2ccd9f80eca80728bc78e9187
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3144911
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76692}
Drive-by: Pointer to reference conversions and other smaller cleanups.
Change-Id: I83ed114e4b27d5986a389a9753333716b0e20524
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3133146
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76615}
Double-checked locking pattern for destruction was missing the acquire
barrier for the initial load.
TSAN complained with a data race where:
T1: ClearAllUsedNodes(), clearing out the node
T2: a. if(GetNodeSafe()) { Lock; ... }
T2: b. operator delete
Since GetNodeSafe() was a relaxed load, operator delete was allowed to
be reordered which raced with ClearAllUsedNodes().
Bug: chromium:1239081, chromium:1242795
Change-Id: I3906555b13cc51538a1a54b7ca481a96d81fd84e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3132264
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76599}
This avoids a benign race in setting the raw pointer inside CTP
destructor by not emitting the write at all. The handle is destructed
which means that we only need to destroy any backing node but may
leave the handle untouched.
Drive-by:
- Add a few more docs.
- Make Clear() thread-safe.
- Make assignment of a sentinel pointer thread-safe.
- Make assignment of a nullptr thread-safe.
Depends on the Blink change: https://crrev.com/c/3116259
Bug: chromium:1242795, chromium:1243350
Change-Id: I8d76da30893c165e3946322b6d02f6ea2c8e529e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3114064
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76493}
In a follow-up CL, the backing stores will, when the sandbox is enabled,
be referenced from V8 objects through offsets rather than raw pointers.
For that to work, all backing stores must be located inside the virtual
memory cage. This CL prepares for that.
Bug: chromium:1218005
Change-Id: Ibb989626ed7094bd4f02ca15464539f4e2bda90f
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3114136
Commit-Queue: Samuel Groß <saelo@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76486}
This reverts commit 5a6c7dee4e.
Reason for revert: Speculative: Lots of Chrome crashes:
https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Blink%20Linux/13353/overview
Original change's description:
> cppgc: Fix CTP for destruction
>
> This avoids a benign race in setting the raw pointer inside CTP
> destructor by not emitting the write at all. The handle is destructed
> which means that we only need to destroy any backing node but may
> leave the handle untouched.
>
> Drive-by:
> - Add a few more docs.
> - Make Clear() thread-safe.
> - Make assignment of a sentinel pointer thread-safe.
> - Make assignment of a nullptr thread-safe.
>
> Bug: chromium:1242795
> Change-Id: I0d9dafa31c298053e87ba1eb75f99fa6e33fa10b
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3114134
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Anton Bikineev <bikineev@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#76455}
Bug: chromium:1242795
Change-Id: Ia96d66f4908894091a4e498116d9568bd7b0e0a3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3114058
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76482}
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}
Give a little bit of introduction to Oilpan and provide a few links to
navigate the project.
Bug: chromium:1056170
Change-Id: I4ef8c256c8de7932e3393017be6c58ba48ca45f2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3114141
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76457}
This avoids a benign race in setting the raw pointer inside CTP
destructor by not emitting the write at all. The handle is destructed
which means that we only need to destroy any backing node but may
leave the handle untouched.
Drive-by:
- Add a few more docs.
- Make Clear() thread-safe.
- Make assignment of a sentinel pointer thread-safe.
- Make assignment of a nullptr thread-safe.
Bug: chromium:1242795
Change-Id: I0d9dafa31c298053e87ba1eb75f99fa6e33fa10b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3114134
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76455}
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}
Consider reading the internal node pointer instead of the actual pointer
when trying to figure out whether a node needs to be destroyed. This
preserves the non-atomiticity of the actual pointer which highlights
races using TSAN while fixing destruction.
Bug: chromium:1239081
Change-Id: I1d1fa29d40d86e4b156269abc90142ee71a8d8f4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3110199
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76415}
This is an internal property that should not be used publicly.
The following methods are going to be deprecated:
- v8::TryCatch::JSStackComparableAddress
- v8::BackupIncumbentScope::JSStackComparableAddress
Change-Id: Iaecfdece4660eaf1aef88121ff0f0c501c0ced5b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3097451
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76363}
This introduces a new, optional `nonIndexedPropertiesOnly` flag to the
`Runtime.getProperties` inspector request, which tells the inspector to
only report properties whose name is not an (typed) array index. This is
to support retrieving all properties except for the indexed ones when
the DevTools front-end decides to use the array bucketing mechanism.
Previously the DevTools front-end had some quite complicated logic in
place to simulate this via injected JavaScript, but that logic didn't
pick up internal properties and was also interfering with the inherited
accessor mechanism. With this new flag, it's straight-forward to
implement the correct behavior in the DevTools front-end.
The corresponding devtools-frontend CL is https://crrev.com/c/3099011.
Before: https://imgur.com/hMX6vaV.png
After: https://imgur.com/MGgiuJQ.png
Bug: chromium:1199701
Change-Id: Iacbe9756ed8a2e6982efaebe1e7c606d37c05379
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3099686
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76360}
ArrayBuffer backing stores will instead use the virtual memory cage and
be referenced through offsets rather than pointers when the sandbox is
enabled. This will be implemented in an independent CL.
Bug: v8:10391
Change-Id: Icc9781003e53c76dbbf4c84ee165151e4182da4b
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3086458
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76348}
This is a reland of a3b2c4ec81
The fix is in PS3, for UBSan. We use WriteUnalignedValue for
potentially unaligned memory writes.
Original change's description:
> [wasm][diagnostics] Support WasmCode in gdb JIT integration
>
> - Add new enum WASM_CODE to JitCodeEvent::CodeType
> - Use AddressRegion instead of AddressRange (remove the latter)
> - Change CodeDescription constructor to take an AddressRegion,
> both JIT_CODE and WASM_CODE use this
> - Add a simple mjsunit test that sets --gdbjit to check that
> we don't crash.
> - Add a api test for adding WASM_CODE
>
> Bug: v8:11908
> Change-Id: I6e87fadc2df67978144d78caf9800c3982bc3705
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3067754
> Reviewed-by: Adam Klein <adamk@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#76271}
Bug: v8:11908
Change-Id: I5ded6d01cff40803b2f70525163f760edcf97165
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3093506
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76327}
This commit updates the comment for the AddData methods which currently
refer to GetDataFromSnapshot, and changes them to
GetDataFromSnapshotOnce instead.
Change-Id: Id09d187eccf645338e2c75b8b692c15a904c8357
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2301929
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76310}
Bug: v8:12008
Change-Id: I2e1d918a1370dae1e15919fbf02d69cbe48f63bf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3089095
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76308}
The assumption doesn't necessarily hold on linux and Android either.
Bug: chromium:1056170, chromium:1239287
Change-Id: Ibb0d8f5f814580bff4e8a7dce9a3397df1385896
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3097273
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76299}
This reverts commit 91c8be9599.
RCS should not be exposed through the API or the inspector protocol as
they are meant as an internal debugging feature.
The only regularly tested and supported way is through chrome-tracing.
Given that this was used mostly for an experiment to analyse chrome's
performance, we can use pprof support as a replacement.
Original change's description:
> [DevTools] Implemented DevTools protocol API to retrieve V8 RunTime Call Stats.
>
> The new APIs are:
> enableRuntimeCallStats
> disableRuntimeCallStats
> getRuntimeCallStats
>
> The RunTime Call Stats are collected per isolate.
>
> Change-Id: I7e520e2c866288aa9f9dc74f12572abedf0d3ac8
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1881601
> Commit-Queue: Peter Kvitek <kvitekp@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#64784}
Change-Id: Ia7575436e97d3420dd7e68414d89477e6a86bb05
Bug: v8:11395
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2998585
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76297}
In Blink's version of Oilpan, GCInfo objects would reside in .bss and
a table would translate between an index and the .bss address. Upon
retrieving a GCInfoIndex, the slow path merely passes a .bss pointer
to a slow path setup method to create the table mapping.
In cppgc, we set up GCInfo entries directly in the table. This is
slightly faster for actually using GCInfo objects as there's no
indirection between table and .bss, and it also saves one pointer (the
indirection) per type that is set up. The downside of this approach is
that individual components of a GCInfo objects, that are all
type-dependent, need to be passed to the conditional setup method.
Since GCInfo indices must be retrieved on each allocation, this
pollutes the fast path with additional instructions.
However, GCInfo components are actually known at compile-time for many
objects. In such cases, we can use a compile-time static dispatch to
encode the known parameters in different functions. This saves around
40KiB of memory on ChromePublic.apk and also creates a more compact
fast path for allocation.
Bug: chromium:1238884, chromium:1056170
Change-Id: Iedd809a8baefcc02f131d2b2c77d341b0abe43bb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3094007
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76291}
This reverts commit a3b2c4ec81.
Reason for revert: UBSan https://logs.chromium.org/logs/v8/buildbucket/cr-buildbucket/8839060153390139249/+/u/Check/gdbjit
Original change's description:
> [wasm][diagnostics] Support WasmCode in gdb JIT integration
>
> - Add new enum WASM_CODE to JitCodeEvent::CodeType
> - Use AddressRegion instead of AddressRange (remove the latter)
> - Change CodeDescription constructor to take an AddressRegion,
> both JIT_CODE and WASM_CODE use this
> - Add a simple mjsunit test that sets --gdbjit to check that
> we don't crash.
> - Add a api test for adding WASM_CODE
>
> Bug: v8:11908
> Change-Id: I6e87fadc2df67978144d78caf9800c3982bc3705
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3067754
> Reviewed-by: Adam Klein <adamk@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#76271}
Bug: v8:11908
Change-Id: Ic1a74a9239e8ef6107efd36f61c089ae6bfc5b6c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3093365
Auto-Submit: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#76274}
- Add new enum WASM_CODE to JitCodeEvent::CodeType
- Use AddressRegion instead of AddressRange (remove the latter)
- Change CodeDescription constructor to take an AddressRegion,
both JIT_CODE and WASM_CODE use this
- Add a simple mjsunit test that sets --gdbjit to check that
we don't crash.
- Add a api test for adding WASM_CODE
Bug: v8:11908
Change-Id: I6e87fadc2df67978144d78caf9800c3982bc3705
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3067754
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76271}
fetch_or (lock-prefixed-or on x86) is emulated with branching on
armv7/armv8 and therefore generates more instructions.
This improves android-binary-size by 45K. It should also improve
performance.
Bug: chromium:1238884
Change-Id: I48f59b645a4bb872b3798a1fde11608fd2930ce6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3090342
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Auto-Submit: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76260}
When this is enabled, v8 reserves a large region of virtual address
space during initialization, at the start of which it will place its 4GB
pointer compression cage. The remainder of the cage is used to store
ArrayBuffer backing stores and WASM memory buffers. This will later
allow referencing these buffers from inside V8 through offsets from the
cage base rather than through raw pointers.
Bug: chromium:1218005
Change-Id: I300094b07f64985217104b14c320cc019f8438af
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3010195
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Samuel Groß <saelo@google.com>
Cr-Commit-Position: refs/heads/master@{#76234}
nullptr objects are considered alive to allow weakness to be used from
stack while running into a conservative GC. Treating nullptr as dead
would mean that e.g. custom collectins could not be strongified on
stack.
Bug: chromium:1231286
Change-Id: Ibeddef18fcbae366c3f54304bf36b75c47bd74ff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3085280
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76229}
This CL adds back the 8-byte element types and extends the fast API
by hiding the unaligned memory reads performed for them.
Bug: chromium:1052746
Change-Id: Ide49ce6bd2c77b9d2d544ca2df47b5f95c93eaa9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3056988
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76207}
This cannot be defined in v8config.h because target architecture
detection is not done in that file.
This CL moves the logic to set V8_HAS_PTHREAD_JIT_WRITE_PROTECT to
src/base/build_config.h, which also defines the V8_TARGET_ARCH* macros.
R=jkummerow@chromium.org, mlippautz@chromium.org
Bug: chromium:1238029
Change-Id: I2a688dad32b83df1d26bf23b15bf4485d78c8cc6
Cq-Include-Trybots: luci.v8.try:v8_mac_arm64_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3085271
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76198}
Following up on https://crrev.com/c/3067319 (V8 call site) and
https://crrev.com/c/3080920 (Blink override), we can now safely remove
the formatAccessorsAsProperties() predicate in the inspector API. V8 now
consistently applies the logic to all "inherited", native accessor
properties (which means both Blink IDL attributes and V8 builtins).
Bug: chromium:1076820, chromium:1199247
Change-Id: I156ee43eb87ffd7b1ba69900fe11283f37241dda
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3080568
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76187}
This is a reland of fffcbaea55
Additional fixes:
- Relax IsStarted DCHECKs in ElapsedTimer for paused_elapsed
- Add LogEventStatus enum in the API for better testing
- Rename Logger::StartEnd enum values to kXXX
- Add additional NestedTimedHistogramScope tests
Original change's description:
> [counters] Fix reentrant timers for V8.Execute
>
> This CL fixes a long standing issue where reentering TimedHistograms
> scopes would cause spurious measurements. Only the non-nested scopes
> yielded correct results.
>
> Due to the changed numbers, the V8.Execute histogram is renamed to
> V8.ExecuteMicroSeconds. Note that this histogram is also guarded
> behind the --slow-histograms flag due to the additional overhead.
>
> Unlike before, it does no longer include time for external callbacks
> and only measures self time. The following example illustrates the
> new behaviour:
>
> 1. Enter V8: |--+.......+--| self-time: 4 units (reported)
> 2. Exit V8 (callback): |-+...+-| self-time: 2 units (ignored)
> 3. Re-enter V8: |---| self-time: 3 units (reported)
>
> This would result in 2 histogram entries with 4 time units for the first
> V8 slice and 3 units for the nested part. Note that the callback time
> itself is ignored.
>
> This CL attempts to clean up how TimedHistograms work:
> - Histogram: the base class
> - TimedHistograms: used for time-related histograms that are not nested
> - NestedTimeHistograms: Extends TimedHistograms and is used for nested
> histograms
>
> This CL changes Histograms to not measure time themselves. Measurements
> happen in the *HistogramScopes:
> - BaseTimedHistogramScope: Base functionality
> - TimedHistogramScope: For non-nested measurements
> - NestedTimedHistogramScope: For nested measurements
> - PauseNestedTimedHistogramScope: Ignore time during a given scope.
> This is used to pause timers during callbacks.
>
> Additional changes:
> - ExternalCallbackScope now contains a PauseNestedTimedHistogramScope
> and always sets VMState<EXTERNAL>
>
> Bug: v8:11946
> Change-Id: I45e4b7ff77b5948b605dd50539044cb26222fa21
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3001345
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Reviewed-by: Victor Gomes <victorgomes@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#76111}
Bug: v8:11946
Change-Id: Ic2eef7456fbc245febcf780b23418f6ab0bebdb7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3080566
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76180}
On OSes other than Windows and Fuchsia the write barrier assumes that
the caged heap is allocated below the stack.
Add CHECK that the assumption holds.
Bug: chromium:1056170
Change-Id: I64c790e61b4cfa2adb8274ed74111f0433e9aefb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3080570
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76173}
Rather than depending on slow signature checks, receiver type checks are
performed using fast numeric instance type checks.
This CL adds a instance type range for embedders to assign values and
uses these to perform type checks.
Bug: v8:11476
Change-Id: Ie8236ae47ca0ba93ae76a7e690b81aa0a2b0f3e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2883623
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76162}
To consume a code cache off-thread
1. The embedder creates a CachedData object wrapping the data blob.
2. The embedder calls ScriptCompiler::StartConsumingCodeCache with the
CachedData, and receives a ScriptCompiler::CodeCacheConsumeTask
which takes ownership of the CachedData.
3. The embedder calls ScriptCompiler::CodeCacheConsumeTask::Run
on a different thread.
4. Once this completes, the embedded passes the completed task as an
optional argument into Source constructor, and calls Compile as
before.
This is roughly similar to how streaming compilation works, with the
QoL improvement that Source owns the CodeCacheConsumeTask and therefore
we can reuse the same Compile method and do the off-thread finalization
behind the scenes inside Compile.
On the v8::internal side, ScriptCompiler::CodeCacheConsumeTask wraps a
v8::internal::BackgroundDeserializeTask, which has a Run and a Finish
method. The Run creates a LocalIsolate (again, similar to
BackgroundCompileTask), calls some helpers on CodeSerializer, and stores
the pre-finalization result in a OffThreadDeserializeData structure.
This stores Persistent Handles to the off-thread initialized SFI and
a vector of Scripts needing fixing up, and it owns the PersistentHandles
object which owns those Handles. Finally, the Finish method consumes
this OffThreadDeserializeData structure, fixes up Scripts, moves the
SFI Handle into the caller HandleScope, and that's it.
Since we don't yet have the source at off-thread deserialization time,
the various code cache sanity checks are done without the source hash
when deserializing, and the Finish method re-does them now that the
source is available.
Bug: chromium:1075999
Change-Id: If1faf35ba3ef840fa4e735581d0b29c96c1d5fc8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3067322
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76155}
pthread_jit_write_protect* functions are only available on arm64 Mac,
not on iOS (which also sets V8_{TARGET_,}OS_MACOSX).
This CL refactors the logic to detect whether pthread_jit_write_protect
and MAP_JIT are available and defines a global preprocessor macro which
can subsequently be used instead of the existing complex condition.
R=jkummerow@chromium.org, mlippautz@chromium.org
Change-Id: I63894f42df35406d6eee90a4ce5070c2fde7b566
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3077154
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Auto-Submit: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76143}
crrev.com/c/3069146 fixed a write barrier issue leading to a null
dereference on Windows that was triggered by having the stack allocated
at address below 4GB.
Turns out the same can happen on Fuchsia.
Bug: chromium:1230763, chromium:1056170
Change-Id: I74ba0b465c3230b4274f2c23d279c4f73183eddb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3071402
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76094}
Windows can allocate the stack at low addresses. A low-address on-stack
slot (e.g. backing store reference for Blink's on-heap collections) with
a null value would make TryGetCagedHeap falsely think that the slot
resides in a caged heap that starts at a null address.
We will still crash for low-address on-stack slots with non-null
on-stack value, since these cases are not considered valid and should
not happen.
The null value check is added only to Windows. It is not an issue on
other OSes where the stack always resides at high addresses and we
prefer to keep the write barrier as cheap as possible.
Bug: chromium:1230794, chromium:1056170
Change-Id: I07e2d178cd95edba57015d6bc6eb127a443b0589
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3069146
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76069}
Rename CopyAndConvertArrayToCppBuffer as
TryCopyAndConvertArrayToCppBuffer and implement type specialization for
int32_t and double in order to speed up V8 bindings with sequences.
This API is used by Blink code, for example see
https://chromium-review.googlesource.com/c/chromium/src/+/3027405.
Bug: v8:11739
Change-Id: I026a7f5e7833fb1afcc2ea9c296b66c7f733cbb1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3036407
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76016}
This is a reland of 84d5b027a7
It removes support for 8-byte types which were causing
unaligned reads.
Original change's description:
> [fastcall] Implement support for TypedArray arguments
>
> This CL adds TypedArrays as supported arguments for fast API calls.
> It implements "exact type" matching, i.e. if Float32Array is expected
> and e.g. Int32Array is passed instead, the generated code bails to the
> slow callback.
>
> Bug: chromium:1052746, chromium:1018624
> Change-Id: I01d4e681d2b367cbb57b06effcb591c090a23295
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2999094
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75756}
Bug: chromium:1052746, chromium:1018624
Change-Id: I872716d95bde8c340cf04990a3e4ae8ec8cd74a2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3035090
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75877}
This properly threads through the `executionContextId` to the request
reported to the DevTools front-end, similarly to how we already report
the `executionContextId` as part of `Runtime.bindingCalled`.
Bug: chromium:1231521
Change-Id: I0a003041aedd8ec661d1b07cdddbcd1f2866a99f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3046187
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75875}
Allow CrossThreadPersistent and its weak form to access ASAN poisoned
memory from the GC entry points.
In general, payloads of to-be-finalized objects are poisoned until the
finalizer actually runs to avoid accidentally touching that payload.
In the case of cross-thread handles, these may need to be cleared by a
different thread before the finalizer actually runs. In order to clear
those references, the slot needs to be unpoisoned.
This is issue is ASAN-only and does not affect production or other
debug builds.
Bug: chromium:1230599, chromium:1056170
Change-Id: If4d0808953047319b02653821abbb5c638084dc5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3040845
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75846}
This CL adds TypedArrays as supported arguments for fast API calls.
It implements "exact type" matching, i.e. if Float32Array is expected
and e.g. Int32Array is passed instead, the generated code bails to the
slow callback.
Bug: chromium:1052746, chromium:1018624
Change-Id: I01d4e681d2b367cbb57b06effcb591c090a23295
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2999094
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75756}
This is a reland of dcdaf42fa8. It adds
CPU time metrics to the WasmModuleDecoded (except for streaming),
WasmModuleCompiled and WasmModuleTieredUp events. This can later be used
to provide this information as UKMs or UMAs.
Bug: v8:11611
Change-Id: I813fc8de36d1445c6a887abf496ec10e1a803815
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2953296
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Emanuel Ziegler <ecmziegler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75715}
For CopyAndConvertArrayToCppBuffer<T, type_info>(src, dst, length),
type `T` can be deducible from `dst`, but `type_info` cannot be
deducible so it's better to rewrite it as
CopyAndConvertArrayToCppBuffer<type_info, T>(src, dst, length).
Bug: v8:11739
Change-Id: Ic3a28671cf7576672dad2f21bf6acf87807c3b48
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3023006
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#75709}
A human-readable name is in Blink only available for C++ types with
JS wrapper objects and for manually annotated types that are interesting
for the snapshot. Return the proper C++ shallow size of the object in
this case. (Merge nodes will have their JS+C++ sizes added.)
Bug: chromium:1228411, chromium:1056170
Change-Id: Ib2b1b7b9dec80e5cccccb1aad8c4c035715612ec
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3021169
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75698}
So far, discarded size was maintained by the sweeper but not wired up
anywere.
Changes in this patch:
- Wire up resident size in heap statistics collection.
- Fix bugs in reporting committed and resident size.
- Sweeper test: Enforce some internal details. The details should not
not be checked broadly but be kept as a detail to the sweeper
itself.
- Stats collection: Test that committed and resident set size are
reported and differ after discarding GCs.
Bug: chromium:1056170
Change-Id: Icf8871c7ea3b28253233485c736b2ca4816fd6f2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3020971
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75684}
This CL implements the resolution of function overloads based on
run-time checks of the type of arguments passed to the JS function.
For the moment, the only supported overload resolution is between
JSArrays and TypedArrays.
Bug: v8:11739
Change-Id: Iabb79149f021037470a3adf071d1cccb6f00acd1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2987599
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#75664}
GCInfoIndex cannot be used for a canonicalization of type names.
Example by omerkatz:
struct A : public GCed<A>, public NameProvider {
override const char* GetHumanReadableName() { return "A"; }
};
struct B : public A {
override const char* GetHumanReadableName() { return "B"; }
};
A and B will have the same GCInfoIndex but different type names.
Bug: chromium:1056170
Change-Id: I35b76a0d80498b8c39e3788f6c2556cdb29f3a7b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3013311
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75649}
- Allows for differentiating committed and physical (resident) size on
a page. This change merely adjusts the API surface and does not
implement resident set size tracking.
- Add object types on page level as well which helps diagnosing almost
empty pages.
Bug: chromium:1056170
Change-Id: I64c69dc55873a0ce97d2064356bfcd957e10cbf9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3011164
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75621}
This allows for marking promises as silent. Setting this flag prevents
the debugger from pausing when the promise rejects.
Bug: chromium:1132506
Change-Id: I260e52faa45ebedd9e8d84e092bd0260e828a902
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3001354
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75595}
In order to implement eager (side effect free) evaluation of arbitrary
accessor properties correctly, we need the ability to call getters while
guaranteeing that we don't trigger side effects. This is accomplished by
adding a `throwOnSideEffect` flag to the `Runtime.callFunctionOn` API,
similar to what's already available with the `Runtime.evaluate` and the
`Debugger.evaluateOnCallFrame` APIs.
Bug: chromium:1076820, chromium:1119900, chromium:1222114
Change-Id: If2d6c51376669cbc71a9dd3c79403d24d62aee43
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3001360
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75556}
This reverts commit 92bfb63cac.
Reason for revert: Broke build https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20shared/43249/overview
Original change's description:
> [build] Separate out inspector as a shared library
>
> This makes src/inspector:inspector into a v8_component producing a
> shared library in component builds. To enable this, all of its exported
> are now marked with V8_INSPECTOR_EXPORT.
>
> This also inverts the dependency between src/inspector:inspector and
> :v8_base_without_compiler, and instead makes d8 and some tests depend on
> inspector rather than getting it via v8.
>
> As a result, the no_check_targets exclusions list in .gn is reduced.
>
> Ultimately embedders like chromium should depend on :v8 and optionally
> src/inspector:inspector, but to allow that transition to occur, this
> renames :v8 to :v8_lib and introduces a new :v8 which depends on v8 and
> inspector. Once all embedders have changed to reflect the new structure,
> this part can be reverted.
>
> Bug: v8:11917
> Change-Id: Ia8b15f07fb15acc5e1f111b1a80248def4285fd0
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2999088
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75532}
Bug: v8:11917
Change-Id: I0ed27ed95211d13b8b3438a8c0a42d577806c475
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3003452
Auto-Submit: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#75533}
This makes src/inspector:inspector into a v8_component producing a
shared library in component builds. To enable this, all of its exported
are now marked with V8_INSPECTOR_EXPORT.
This also inverts the dependency between src/inspector:inspector and
:v8_base_without_compiler, and instead makes d8 and some tests depend on
inspector rather than getting it via v8.
As a result, the no_check_targets exclusions list in .gn is reduced.
Ultimately embedders like chromium should depend on :v8 and optionally
src/inspector:inspector, but to allow that transition to occur, this
renames :v8 to :v8_lib and introduces a new :v8 which depends on v8 and
inspector. Once all embedders have changed to reflect the new structure,
this part can be reverted.
Bug: v8:11917
Change-Id: Ia8b15f07fb15acc5e1f111b1a80248def4285fd0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2999088
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75532}
This CL adds support in TurboFan for passing JSArrays as arguments to
fast API callbacks. It also extends the v8::Array class with a
CopyAndConvertArrayToCppBuffer method to allow the embedder to perform
quick conversions of their JSArrays to a C++ buffer. The CL also adds
tests in d8. Design doc:
https://docs.google.com/document/d/1BNKKZNgrGYafx8kqSfNEQqQYY5n4A6mGufss_Vz-h-4/edit#heading=h.c0kgf82jnlpp
Bug: chromium:1052746, chromium:715122
Change-Id: If47ac60d9ebe6462bbf3adff002e2da8e14e8fc8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2940900
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75333}
When checks are enabled, ensure that the global handle zap value never
leaks into user code as it indicates that the garbage collector failed
to keep alive an object.
Bug: chromium:1056170
Change-Id: I4836fe49cd6e443d689068af10276ed99b46eb10
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2972729
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75330}
... behind the v8_enable_external_code_space build flag.
This is a first CL in a row of CLs that will make CodeDataContainer
the only type of objects that could contain references to Code objects
(besides the Code objects embedded into the generated code).
Eventually these changes will allow us to move Code space out of the V8
heap cage.
This CL adds |code| field to ensure that CodeDataContainer keeps the
respective Code object alive and |code_entry_point| field that contains
cached value of the code().InstructionStart().
Bug: v8:11880
Change-Id: Ie7ce75667d8da306797d203691b429671bc4530d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2964093
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75179}
Constructors define instance types for their instances while accessors
define a range of permissable instance types for receiver checks.\
Bug: v8:11476
Change-Id: I48b5326ec0a4e847283c2fa5c8f1705302727453
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2821430
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75131}
This CL adds a new method intended for tests or lab settings to
cleanup V8 caches. The synchronous nature of the method greatly reduces
flakiness of blink leak detection in many cases.
Bug: chromium:1217831
Change-Id: I107eddc8b88d91aa7e69430ecfc135fe39538a5c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2948666
Commit-Queue: Simon Zünd <szuend@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75041}
This commit adds a TryGetCurrent() method to the v8::Isolate class.
The motivation for adding this method this is that in Node.js we've run
into situations where we need to check if there is a current
Isolate and we are using GetCurrent() for this. The issue is that for a
debug build of Node.js, the debug check in GetCurrent() will cause a
failure.
The suggestion in this changeset is to allow getting the current
Isolate, or null if one does not exist, without any checks.
Change-Id: I01676e4bcdbe86da0496f5df1982d14eb1c9ebf8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2910630
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75004}
This interface allows associating meta information to
exceptions. This meta information can be used by debugging
tools, like DevTools, to learn about e.g. a network request
or a DevTools issue that is associated with the exception.
To do so the inspector client (i.e. embedder) has to provide
the data.
Bug: chromium:1213393
Change-Id: Ia86221f4f04b21024d592bafb2f74886ead8a6a8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2928496
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74909}
This CL enhances the interface of the fast C API with constants and
structs necessary for supporting JSArrays, TypedArrays and ArrayBuffers.
It also adds checks for incompatible combinations of argument type/flags.
Bug: chromium:1052746
Change-Id: I032167d0739d33f8151f78574c89d565cb9bd821
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2903147
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74857}
To support Fast API calls with overloads, implement compile-time
function resolution based on the number of arguments passed to the JS
function.
Bug: v8:11739
Change-Id: I96839dc0b6fc540eff94573ac9e77f678908fc3a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2901249
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#74837}
Based on an analysis of auto-generated code, based on
browser_protocol.pdl and js_protocol.pdl:
https://goreportcard.com/report/github.com/daabr/chrome-vision#misspell
Bug: chromium:1213460
Change-Id: Ib96b2d2700d0bf1ac90e88accd0bc15eccbb9d7b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2848874
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74810}
They have been disabled for some time and are superseeded by lazy
feedback vector allocation.
Change-Id: Iafc3989b0c1f866ce7d6295d9b13ccaa5ef1c115
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2905609
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74711}
Used include-what-you-use [1] to clean up cppgc API headers. The tool
does somewhat work but requires some cleanup afterwards as it cannot
nicely deal with `v8config.h` and the defines it generates.
[1] https://github.com/include-what-you-use/include-what-you-use/
Bug: chromium:1056170
Change-Id: I7b03797c615f8e033510fc959bbdb792d8b7a4ee
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2907612
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74693}
Check that the marked bit of an object is set if assigned during a
prefinalizer to a Member in a live object or a Persistent.
Bug: v8:11749
Change-Id: I993c0d226a4157698591e1f7bc0c55e5c79239b6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2897093
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74672}
In order to support Fast API calls with overloads, store a FixedArray
of c-function addresses and a FixedArray of the corresponding
FunctionInfo*. For now keep using only the first function in the array.
Bug: v8:11739
Change-Id: If23381aa9d04c5cd830043951da9c53836a36328
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2876592
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#74643}
Create verification state on first assignment and check that
the reference slot is contained within the values heap if it
is an on-heap reference.
Bug: chromium:1056170
Change-Id: I0ce0e2bbd751186429950bb4f6bad97b273b3128
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2887509
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74607}
The method changes a global flag, depending upon which v8 attaches or
not the SharedArrayBuffer constructor to global objects. Chrome ended
up calling it when some contexts had already been created, leading to
inconsistencies. (Also) because of that, we decided to change the
mechanism for enabling cross-origin isolation (cf.
https://crrev.com/c/2880215). I believe it is better not to expose
this method.
Bug: chromium:923807
Change-Id: I269cb1c5406f999a395bbb7657574c0f73b4ae99
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2900224
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Antonio Sartori <antoniosartori@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74600}
This CL enhances the fast C API in a way to allow passing the receiver
to the fast callback as Local<Object> instead of Local<Value>. It also
fixes documentation comments.
Bug: chromium:1052746
Change-Id: I424aa83023c2e6633b9df08ee040bf170db32b3d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2887510
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74519}
Member is sometimes still used from off-heap storage which prohibits
getting the heap from the Member's slot address.
Bug: v8:11756
Change-Id: I61658ce07a8b02a8c400232ff21c75f0d8b95dcb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2886879
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74496}
After updating our bots to use GCC 7.4, we do not need to support
incomplete C++14 support any more. In particular, we can assume
complete c++14 constexpr support now.
This CL removes the V8_HAS_CXX14_CONSTEXPR and CONSTEXPR_DCHECK macros.
The CONSTEXPR_DCHECKs are replaced by DCHECK and friend, or
STATIC_ASSERT where possible.
R=jgruber@chromium.org, leszeks@chromium.org, mlippautz@chromium.org
Bug: v8:9686, v8:11384
Change-Id: I3a8769a0f54da7eb2cacc37ee23e5c97092e3051
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2876847
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74486}
As a first step to support Fast API calls with overloads, adds a
new FunctionTemplate constructor that accepts a vector of CFunction*.
Bug: v8:11739
Change-Id: I112b1746768f52df52c893a4f1fb799b6bd90856
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2860838
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#74481}
This is a reland of 7458e67c4e
Original change's description:
> cppgc: Implement basic Member and Persistent checks
>
> Adds check for
> - same heap on assignment
> - header and containment
>
> The verification state is eagerly created for on-heap Member
> references using caged heap and lazily created on first assignment for
> all others.
>
> Bug: chromium:1056170
> Change-Id: I38ee18eeb7ac489f69a46670cc5e5abe07f62dfa
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2878745
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74449}
Bug: chromium:1056170
Change-Id: I9cecfcf7ba2cb70650fd51f345fbf740b96ff6ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2882804
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74468}
This change turns the previously used XOR-based type checks for external
pointers into AND-based type checks. With those, the type tag is ORed
into the top bits of an external pointer when it is written, and the
type check performed on every load is done by ANDing the value with the
inverted tag. This will later allow type checking and masking off the GC
marking bits of external pointers in a single operation.
Bug: v8:10391
Change-Id: I89f2b22588b3f7467c79c7916c11f25cd9bcc82d
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2850639
Commit-Queue: Samuel Groß <saelo@google.com>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74464}
This reverts commit 7458e67c4e.
Reason for revert: Crash on windows https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Win64%20-%20debug/37698/overview
Original change's description:
> cppgc: Implement basic Member and Persistent checks
>
> Adds check for
> - same heap on assignment
> - header and containment
>
> The verification state is eagerly created for on-heap Member
> references using caged heap and lazily created on first assignment for
> all others.
>
> Bug: chromium:1056170
> Change-Id: I38ee18eeb7ac489f69a46670cc5e5abe07f62dfa
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2878745
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74449}
Bug: chromium:1056170
Change-Id: I466522a7d879560c99dabbd96c3b097894743a87
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2880149
Auto-Submit: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#74450}
Adds check for
- same heap on assignment
- header and containment
The verification state is eagerly created for on-heap Member
references using caged heap and lazily created on first assignment for
all others.
Bug: chromium:1056170
Change-Id: I38ee18eeb7ac489f69a46670cc5e5abe07f62dfa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2878745
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74449}
The function will be used to implement the web memory measurement API.
This adds an |allocated_bytes_at_last_gc| counter to each normal page.
The counter is updated by the sweeper.
Bug: chromium:1181269
Change-Id: If6612de06f373a839fce986c71ba3dfde4d9c9c2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2880534
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74446}
This reland patch:
https://chromium-review.googlesource.com/c/v8/v8/+/2867473
(See patchset 1)
The problem was blink injecting interceptor into the window object. It
observes "observation" and "mutations" on this object. When it happens
to the initial empty document, the IPC DidAccessInitialDocument() is
sent and modify the state of the browser process. Causing two tests to
fail.
The diff (See patchset 1..2) includes:
1. Use JSObject::HasRealNamedProperty instead of JsObject::HasProperty.
This skips the interceptor and do not walk the prototype chain.
2. Invert JSObject::HasRealNamedProperty() with
IsSharedArrayBufferConstructorEnabled(), just in case. This avoid
observing the object when not needed.
Original patch description:
---
This change makes it possible to enable SharedArrayBuffer per Context,
controlling whether it should be enabled or not with a callback. The
previous implementation of the reverse origin trial for
SharedArrayBuffer was broken, since the feature could only be enabled
globally per process, and only if the feature flag is set early enough
in the v8 initialization. This does not play well with how origin
trials work.
The implementation is similar to the callbacks that already exist for
the origin trials for WebAssembly simd and exceptions.
SharedArrayBuffer is still controlled by the flag
harmony_sharedarraybuffer. If that flag is disabled, then
SharedArrayBuffer is disabled unconditionally. On top of that, this CL
introduces a new flag for enabling SharedArrayBuffer per context. If
that flag is set, a callback is used to determine whether
SharedArrayBuffer should be enabled.
Note that this only controls whether the SharedArrayBuffer constructor
should be exposed on the global object or not. It is always possible
to construct a SharedArrayBuffer using
new WebAssembly.Memory({
shared:true, initial:0, maximum:0 }).buffer.constructor;
There are few things which I do not like of this approach, but I did
not have better ideas:
1. The complex logic of dobule flag + callback. However, this seemed
the best way to me to not break embedders which rely on that flag
being enabled by default.
2. The fact that what actually matters is just whether the callback
returns `true` once. It would be good to check that the callback gives
a consistent return value, or to provide a better API that cannot be
missunderstood.
Bug: chromium:923807,chromium:1071424,chromium:1138860
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2867473
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Antonio Sartori <antoniosartori@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74378}
---
Bug: chromium:923807,chromium:1071424,chromium:1138860,chromium:1206187
Change-Id: Ibc6b4f8c0e0827178b7f0cbe4b942444bbbe6216
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2880215
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Lutz Vahl <vahl@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Auto-Submit: Arthur Sonzogni <arthursonzogni@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74441}
Within the inspector we should be consistent about passing the script ID
always as integer, and only convert to String16 when actually needed.
That (a) saves memory (and some runtime overhead) when stashing away
call frames, for example in case of async stack traces, and (b) reduces
confusion which representation to chose.
Bug: chromium:1162229
Change-Id: I9591931da0a307779372f36aba6e155ec22bbe3d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2876856
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74410}
This reverts commit bc1eb7b478.
Reason for revert: https://ci.chromium.org/ui/p/chromium/builders/try/android-pie-arm64-rel/369203/overview
Original change's description:
> [api] Add API callback setter for the SAB origin trial
>
> This change makes it possible to enable SharedArrayBuffer per Context,
> controlling whether it should be enabled or not with a callback. The
> previous implementation of the reverse origin trial for
> SharedArrayBuffer was broken, since the feature could only be enabled
> globally per process, and only if the feature flag is set early enough
> in the v8 initialization. This does not play well with how origin
> trials work.
>
> The implementation is similar to the callbacks that already exist for
> the origin trials for WebAssembly simd and exceptions.
>
> SharedArrayBuffer is still controlled by the flag
> harmony_sharedarraybuffer. If that flag is disabled, then
> SharedArrayBuffer is disabled unconditionally. On top of that, this CL
> introduces a new flag for enabling SharedArrayBuffer per context. If
> that flag is set, a callback is used to determine whether
> SharedArrayBuffer should be enabled.
>
>
> Note that this only controls whether the SharedArrayBuffer constructor
> should be exposed on the global object or not. It is always possible
> to construct a SharedArrayBuffer using
>
> new WebAssembly.Memory({
> shared:true, initial:0, maximum:0 }).buffer.constructor;
>
>
> There are few things which I do not like of this approach, but I did
> not have better ideas:
>
> 1. The complex logic of dobule flag + callback. However, this seemed
> the best way to me to not break embedders which rely on that flag
> being enabled by default.
>
> 2. The fact that what actually matters is just whether the callback
> returns `true` once. It would be good to check that the callback gives
> a consistent return value, or to provide a better API that cannot be
> missunderstood.
>
>
> Bug: chromium:923807,chromium:1071424,chromium:1138860
> Change-Id: Ibe3776fad4d3bff5dda9066967e4b20328014266
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2867473
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Antonio Sartori <antoniosartori@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74378}
Bug: chromium:923807
Bug: chromium:1071424
Bug: chromium:1138860
Change-Id: Iec678dee130db891c2096e47bc072a5d77ae9476
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2874403
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Lutz Vahl <vahl@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74404}
- Take HeapHandle& parameter to allow a use case of free() on an already
dead object during sweeping.
- Change free() from T* to T& which forces an object and allows the
caller to place the nullptr check before retrieving a heap handle.
Bug: chromium:1056170
Change-Id: I80689d27d3abe410d177cd8c86b31ff2fe579a77
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2874461
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74387}
This change makes it possible to enable SharedArrayBuffer per Context,
controlling whether it should be enabled or not with a callback. The
previous implementation of the reverse origin trial for
SharedArrayBuffer was broken, since the feature could only be enabled
globally per process, and only if the feature flag is set early enough
in the v8 initialization. This does not play well with how origin
trials work.
The implementation is similar to the callbacks that already exist for
the origin trials for WebAssembly simd and exceptions.
SharedArrayBuffer is still controlled by the flag
harmony_sharedarraybuffer. If that flag is disabled, then
SharedArrayBuffer is disabled unconditionally. On top of that, this CL
introduces a new flag for enabling SharedArrayBuffer per context. If
that flag is set, a callback is used to determine whether
SharedArrayBuffer should be enabled.
Note that this only controls whether the SharedArrayBuffer constructor
should be exposed on the global object or not. It is always possible
to construct a SharedArrayBuffer using
new WebAssembly.Memory({
shared:true, initial:0, maximum:0 }).buffer.constructor;
There are few things which I do not like of this approach, but I did
not have better ideas:
1. The complex logic of dobule flag + callback. However, this seemed
the best way to me to not break embedders which rely on that flag
being enabled by default.
2. The fact that what actually matters is just whether the callback
returns `true` once. It would be good to check that the callback gives
a consistent return value, or to provide a better API that cannot be
missunderstood.
Bug: chromium:923807,chromium:1071424,chromium:1138860
Change-Id: Ibe3776fad4d3bff5dda9066967e4b20328014266
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2867473
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Antonio Sartori <antoniosartori@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74378}
This reverts commit 1527c4878a.
Reason for revert: reverted in favour of https://chromium-review.googlesource.com/c/v8/v8/+/2857640
Original change's description:
> Expose V8CommandLineAPIScope and V8InspectorSession::createCommandLineAPI
>
> This CL extracts CommandLineAPIScope from V8Console and exposes it
> as V8CommandLineAPIScope. Also, it exposes V8InspectorSession::createCommandLineAPI.
> These changes will be used by InspectorPageAgent to install command
> line APIs when evaluating scripts added using CDP's command
> Page.addScriptToEvaluateOnNewDocument.
>
> Chromium CL: https://crrev.com/c/2835786
>
> Doc: https://docs.google.com/document/d/1zGG7-NZMb-aOfFfHf1u4VsP4C-lZettopCvYDC6pkBw/
> Bug: chromium:1200705
> Change-Id: I39b27f957cfb6d682ea84e385eaf25d09d261b58
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2835712
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74096}
Bug: chromium:1200705
Change-Id: Ic7f411f3c66dd33c1b021dab90f202b361ee85c2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2859953
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74350}
AtomicCtorTag is needed by Blink to force atomic initialization of
members. This is used when reinitializing a member in a backing store.
Bug: chromium:1056170
Change-Id: I410766a9c9133a1f1c2ea2e1153cb1c61363459f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2859944
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74341}
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=mlippautz@chromium.org
Bug: v8:11717
Change-Id: I41c4c18dd3f70ec255e9d2769ffd25a38f6f2784
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2862764
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74307}
In https://crrev.com/c/2842128, a concern was raised that using
`V8InspectorSession::createCommandLineAPI` directly would not cache the command line
API definitions and V8 could expose a higher level API for this use
case. This CL exposes `InjectedScript::ContextScope` via V8InspectorSession.
If this approach is approved, V8InspectorSession::createCommandLineAPI
could be removed.
Example usage: https://crrev.com/c/2858964
Bug: chromium:1200705
Change-Id: Ib9fcadcb9bbd75c08f0122b0e4ee61e2874c4f8a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2857640
Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74289}
The "Restart frame" feature was implemented as part of LiveEdit and
primarily used to support LiveEdit of active functions, but that was
previously disabled as part of https://crrev.com/c/2846892 because it's
too brittle and causes crashes when using seemingly unrelated features.
The "Restart frame" feature was also available as a context menu item
separately in the DevTools front-end, but that was also already removed
as part of https://crrev.com/c/2854681 earlier. So all uses are gone
now.
This change works by marking Debugger.restartFrame as deprecated and
having it respond with a ServerError all the time. It thus allows us to
remove a whole bunch of machinery that was essentially just put in
various places to support the restart_fp_ magic. In particular the
debugger no longer needs any machine specific builtins now.
Bug: chromium:1195927
Change-Id: I1153ba6b00e979620af57dd9f58aa1c035ec4484
Fixed: chromium:1203606
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2854750
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74276}
GCC 7.4 has problems with combining [[nodiscard]] with
__attribute__((visibility(""))). Disable as there's enough compilation
coverage for clang to find issues.
Bug: v8:11707
Change-Id: I9e61463c4d11dbc3b03d458e2810206fb93de108
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2854737
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74262}
This CL factors out a CodeRange class out of MemoryAllocator.
When V8_COMPRESS_POINTERS_IN_SHARED_CAGE is defined, there is a single
CodeRange shared by all Isolates in the process. This also turns short
builtins back for both configurations of pointer compression. When
sharing a cage, there is a single copy of the re-embedded builtins.
Since a shared pointer cage is still experimental, to avoid API churn
this CodeRange's size is not configurable and is always the maximal size
depending on the underlying platform.
Change-Id: Ie94f52746f2c5450247a999cc6071e3914d4cf0c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2819206
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74261}
With top-level await enabled by default, the behavior of
v8::Module::Evaluate is changed to always return a Promise, and should
be documented.
No-try: true
Change-Id: I8bf41a18d8d98befecd62d6423ab37fdbaac3aad
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2854874
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74238}
This CL makes the object passed as argument to IsLeafTemplateForApiObject
be received as a handle instead of a raw C++ pointer. From the codegen
point of view, the memory representation is the same, so this doesn't
change its semantics.
Bug: chromium:1052746
Change-Id: Ibc116aa4d577ba95f30d1014f15f34ef3fbb1a35
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2851884
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74220}
`exectionContextId` parameter in Runtime.addBinding is not working
correctly and does not have a practical use case. Therefore,
deprecating it in favour of the `executionContextName` parameter that
better serves the purpose of exposing bindings to isolated worlds. We
expect most users to be able to migrate to `executionContextName`.
Bug: chromium:1169639
Change-Id: Ic37cefa6a62501c7e903923f1f9c0da7e51326c8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2844652
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74137}
