As we can still intend to run the web-exposed profiler outside of an
origin-isolated environment, add support back for filtering by
v8::Context.
This reverts commit 05af368100.
Bug: chromium:956688
Change-Id: Idd98bea3213b5963f689a04de6c3743073efc587
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2785806
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Andrew Comminos <acomminos@fb.com>
Cr-Commit-Position: refs/heads/master@{#74112}
This is a reland of d5457f5fb7
after a speculative revert.
Additionally it fixes an issue with throwing promise hooks.
Original change's description:
> [api] JSFunction PromiseHook for v8::Context
>
> This will enable Node.js to get much better performance from async_hooks
> as currently PromiseHook delegates to C++ for the hook function and then
> Node.js delegates it right back to JavaScript, introducing several
> unnecessary barrier hops in code that gets called very, very frequently
> in modern, promise-heavy applications.
>
> This API mirrors the form of the original C++ function based PromiseHook
> API, however it is intentionally separate to allow it to use JSFunctions
> triggered within generated code to, as much as possible, avoid entering
> runtime functions entirely.
>
> Because PromiseHook has internal use also, beyond just the Node.js use,
> I have opted to leave the existing API intact and keep this separate to
> avoid conflicting with any possible behaviour expectations of other API
> users.
>
> The design ideas for this new API stemmed from discussion with some V8
> team members at a previous Node.js Diagnostics Summit hosted by Google
> in Munich, and the relevant documentation of the discussion can be found
> here: https://docs.google.com/document/d/1g8OrG5lMIUhRn1zbkutgY83MiTSMx-0NHDs8Bf-nXxM/edit#heading=h.w1bavzz80l1e
>
> A summary of the reasons for why this new design is important can be
> found here: https://docs.google.com/document/d/1vtgoT4_kjgOr-Bl605HR2T6_SC-C8uWzYaOPDK5pmRo/edit?usp=sharing
>
> Bug: v8:11025
> Change-Id: I0b403b00c37d3020b5af07b654b860659d3a7697
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2759188
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Anton Bikineev <bikineev@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73858}
Bug: v8:11025
Bug: chromium:1197475
Change-Id: I73a71e97d9c3dff89a2b092c3fe4adff81ede8ef
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2823917
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74071}
This is a reland of 6124a534b2
It fixes a UAF issue in the d8 test by moving the test API object
constructor to PerIsolateData. It also fixes a crash in Chromium
caused by current usage of v8::ApiObject, which should be migrated
to v8::Value*.
Original change's description:
> [fastcall] Add support for leaf interface type checks
>
> This CL adds an IsTemplateForApiObject method to FunctionTemplate
> allowing the embedder to check whether a given API object was
> instantiated by this template without including parent templates
> in the search. It also replaces the v8::ApiObject in the fast API
> with a raw v8::Value pointer to allow use of standard C++ casts.
>
> Bug: chromium:1052746
> Change-Id: I0812ec8b4daaa5f5005aabf10b63e1e84e0b8f03
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595310
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73999}
Bug: chromium:1052746, chromium:1199900
Change-Id: I4b7f0c9e9152919dde4a1d0c48fbf5ac8c5b13d8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2835711
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74064}
This is a reland of c83c9590ba
Changes since revert: nothing, issue was crbug.com/v8/11666
Original change's description:
> [ic] Add a new MegaDOM IC
>
> This patch implements the MegaDOM IC setup and access. A new MegaDOM
> IC state indicates that we've seen only DOM accessors at this access
> site.
>
> This CL only adds support for DOM getters in LoadIC, other kinds of
> access will be added in follow on CLs.
>
> Still remaining TODO before shipping:
> 1. Have a mechanism to invalidate the protector
> 2. Have a mechanism to find the accessors that aren't overloaded
> 3. Use a new builtin to miss to runtime on access check failure
>
> Change-Id: Ie12efe5e9fa284f023043b996d61e7d74e710ee2
> Bug: v8:11321
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2618239
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Dan Elphick <delphick@chromium.org>
> Reviewed-by: Mythri Alle <mythria@chromium.org>
> Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73733}
Bug: v8:11321
Change-Id: I2bec54465542b5b40c42adb6eb12b6ce72cce5bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2794439
Reviewed-by: Dan Elphick <delphick@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74056}
This reverts commit 6124a534b2.
Reason for revert: On suspicion of blocking V8 roll: https://ci.chromium.org/ui/p/chromium/builders/try/win10_chromium_x64_rel_ng/839568/overview
Original change's description:
> [fastcall] Add support for leaf interface type checks
>
> This CL adds an IsTemplateForApiObject method to FunctionTemplate
> allowing the embedder to check whether a given API object was
> instantiated by this template without including parent templates
> in the search. It also replaces the v8::ApiObject in the fast API
> with a raw v8::Value pointer to allow use of standard C++ casts.
>
> Bug: chromium:1052746
> Change-Id: I0812ec8b4daaa5f5005aabf10b63e1e84e0b8f03
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595310
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73999}
Bug: chromium:1052746
Change-Id: Ic99ec616310f0f75800c3dad393b5d2d685b76ab
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2829988
Auto-Submit: Shu-yu Guo <syg@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@{#74016}
This CL adds an IsTemplateForApiObject method to FunctionTemplate
allowing the embedder to check whether a given API object was
instantiated by this template without including parent templates
in the search. It also replaces the v8::ApiObject in the fast API
with a raw v8::Value pointer to allow use of standard C++ casts.
Bug: chromium:1052746
Change-Id: I0812ec8b4daaa5f5005aabf10b63e1e84e0b8f03
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595310
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73999}
The method was scheduled for removal in M92, as finaly part of the
fn.displayName support removal.
Fixed: chromium:1177685
Doc: https://bit.ly/devtools-function-displayName-removal
Change-Id: I243dd6c9849a6f39e76dd003300b639bfd8df604
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2821954
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73930}
With a shared cage, there's no easy way to recover an Isolate from a
heap pointer. Symbol::Description relies on RO symbols' description slot
being uncompressed so a Handle could point to it. This isn't possible
with a shared cage without going through TLS to get an Isolate for
Handle construction, so deprecate the method in favor of one that takes
an Isolate directly.
Bug: v8:11460
Change-Id: I69b2b7d77f4c00d0f58954cd80e22cba5ff222e3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2802860
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73924}
This reverts commit d5457f5fb7.
Reason for revert:
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20gc%20stress/32999
Original change's description:
> [api] JSFunction PromiseHook for v8::Context
>
> This will enable Node.js to get much better performance from async_hooks
> as currently PromiseHook delegates to C++ for the hook function and then
> Node.js delegates it right back to JavaScript, introducing several
> unnecessary barrier hops in code that gets called very, very frequently
> in modern, promise-heavy applications.
>
> This API mirrors the form of the original C++ function based PromiseHook
> API, however it is intentionally separate to allow it to use JSFunctions
> triggered within generated code to, as much as possible, avoid entering
> runtime functions entirely.
>
> Because PromiseHook has internal use also, beyond just the Node.js use,
> I have opted to leave the existing API intact and keep this separate to
> avoid conflicting with any possible behaviour expectations of other API
> users.
>
> The design ideas for this new API stemmed from discussion with some V8
> team members at a previous Node.js Diagnostics Summit hosted by Google
> in Munich, and the relevant documentation of the discussion can be found
> here: https://docs.google.com/document/d/1g8OrG5lMIUhRn1zbkutgY83MiTSMx-0NHDs8Bf-nXxM/edit#heading=h.w1bavzz80l1e
>
> A summary of the reasons for why this new design is important can be
> found here: https://docs.google.com/document/d/1vtgoT4_kjgOr-Bl605HR2T6_SC-C8uWzYaOPDK5pmRo/edit?usp=sharing
>
> Bug: v8:11025
> Change-Id: I0b403b00c37d3020b5af07b654b860659d3a7697
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2759188
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Anton Bikineev <bikineev@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73858}
Bug: v8:11025
Change-Id: Ie7345c4505f39c973f9f0dbca745b591cff63f3f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2814740
Auto-Submit: Michael Achenbach <machenbach@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@{#73862}
This will enable Node.js to get much better performance from async_hooks
as currently PromiseHook delegates to C++ for the hook function and then
Node.js delegates it right back to JavaScript, introducing several
unnecessary barrier hops in code that gets called very, very frequently
in modern, promise-heavy applications.
This API mirrors the form of the original C++ function based PromiseHook
API, however it is intentionally separate to allow it to use JSFunctions
triggered within generated code to, as much as possible, avoid entering
runtime functions entirely.
Because PromiseHook has internal use also, beyond just the Node.js use,
I have opted to leave the existing API intact and keep this separate to
avoid conflicting with any possible behaviour expectations of other API
users.
The design ideas for this new API stemmed from discussion with some V8
team members at a previous Node.js Diagnostics Summit hosted by Google
in Munich, and the relevant documentation of the discussion can be found
here: https://docs.google.com/document/d/1g8OrG5lMIUhRn1zbkutgY83MiTSMx-0NHDs8Bf-nXxM/edit#heading=h.w1bavzz80l1e
A summary of the reasons for why this new design is important can be
found here: https://docs.google.com/document/d/1vtgoT4_kjgOr-Bl605HR2T6_SC-C8uWzYaOPDK5pmRo/edit?usp=sharing
Bug: v8:11025
Change-Id: I0b403b00c37d3020b5af07b654b860659d3a7697
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2759188
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73858}
This reverts commit c83c9590ba.
Reason for revert: Speculatively reverting for a failure on Arm GC stress bot - https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Arm%20GC%20Stress/b8851256837192083520/overview
Original change's description:
> [ic] Add a new MegaDOM IC
>
> This patch implements the MegaDOM IC setup and access. A new MegaDOM
> IC state indicates that we've seen only DOM accessors at this access
> site.
>
> This CL only adds support for DOM getters in LoadIC, other kinds of
> access will be added in follow on CLs.
>
> Still remaining TODO before shipping:
> 1. Have a mechanism to invalidate the protector
> 2. Have a mechanism to find the accessors that aren't overloaded
> 3. Use a new builtin to miss to runtime on access check failure
>
> Change-Id: Ie12efe5e9fa284f023043b996d61e7d74e710ee2
> Bug: v8:11321
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2618239
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Dan Elphick <delphick@chromium.org>
> Reviewed-by: Mythri Alle <mythria@chromium.org>
> Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73733}
Bug: v8:11321
Change-Id: Ib6a55796f2a3c345d4923f9eaa215a6ff55ed15b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2794437
Auto-Submit: Maya Lekova <mslekova@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@{#73734}
This patch implements the MegaDOM IC setup and access. A new MegaDOM
IC state indicates that we've seen only DOM accessors at this access
site.
This CL only adds support for DOM getters in LoadIC, other kinds of
access will be added in follow on CLs.
Still remaining TODO before shipping:
1. Have a mechanism to invalidate the protector
2. Have a mechanism to find the accessors that aren't overloaded
3. Use a new builtin to miss to runtime on access check failure
Change-Id: Ie12efe5e9fa284f023043b996d61e7d74e710ee2
Bug: v8:11321
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2618239
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73733}
Origin trials allow webpages to use experimental features even though
the features are not yet enabled by default. These features will then
get enabled per execution context: it is possible that the feature is
enabled in one execution context but disabled in another execution
context. In V8 we check for origin trials by calling a callback provided
by the embedder that takes the context as a parameter and returns
whether a feature is enabled in this context or not.
This approach fails when a feature changes the context itself, e.g. by
extending the global object. In that case the context is not available
yet to check for the origin trial.
To solve the problem this CL adds a new API function that can be called
by the embedder to notify V8 that context with the origin trial
information is finished. After that V8 can read the origin trial
information from the context and extend e.g. the global object with the
origin trial features.
Additionally to the API this CL also adds code to enable the
WebAssembly.Exception constructor conditionally, depending on whether
it has been enabled by an origin trial or not.
The Blink-side change: https://crrev.com/c/2775573R=ulan@chromium.org, jkummerow@chromium.org
Change-Id: Ic05c4a89eb3e0e31469e49da8767d630c43b2e00
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2773287
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73597}
Add a V8 API to update load start time for RAIL PERFORMANCE_LOAD mode
Bug: v8:10947
Change-Id: If86a815f8974b47a6f4ba82c3661c21b73f39553
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2423403
Auto-Submit: Hong Zheng <hong.zheng@intel.com>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73393}
Handles are notorious for preventing compiler optimizations. We should
avoid them for simple const functions.
- Mark more API functions const
- Mark more String functions const
Bug: v8:11195, chromium:808503, v8:11263
Change-Id: I9940e85600bc7d19027039d807b3313e2dcccdc7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2575065
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73159}
These simplify production of extra information in stack traces or
dereferencing source maps in processing stack traces. While these
can be managed externally, this can be very complicated in
environments where scripts come from many different sources,
possibly not even under embedder control. Since V8 already has
easy access to this information, it's nice to share it with
embedders.
Bug: v8:11509
Change-Id: Ic5a1685adf4cdf456bdf7191ce815f728cf491e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2724571
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73148}
After deprecation and removal of the old misleading API we re-add
v8::String::IsExternal which returns true for both, external one-byte and
external two-byte strings.
Bug: v8:10641
Change-Id: I4c66d4df891f7180c7a727a45c1fbd254a7f5c02
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2726512
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73137}
Add a Utf16CharacterStream for windows-1252, which uses a table to
covert from windows-1252 to the appropriate uc16 character. This fixes
issues where windows-1252 encoded source was treated like latin-1.
This introduces a new encoding type in the API, so embedders will have
to opt-in to using this new stream.
Fixed: v8:9315
Change-Id: I2e847c2d4f1727281f6be24b4743d77bb232a62d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2729338
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73134}
This is a reland of ed225df70c
Reland changes: removed #if DEBUG from v8.h since it had compile errors
in chromium + windows. Also wasn't needed anyway since the method it was
calling was just a DCHECK.
Original change's description:
> [objects] Cache the ExternalString's data in its resource
>
> For external uncached strings (also called "Small External Strings")
> with cacheable resources, we can cache its resource's data at the
> string's creation time. This allows us to safely read the data from the
> background as we wouldn't trigger a data() callback.
>
> For more information regarding the investigation and possible proposals
> see
> https://docs.google.com/document/d/101eAQqFpBPWFGNJicxtdlwYShJkTOUsEuxkVVeu5Hrk/edit?usp=sharing
>
> Bug: v8:7790, v8:11463
> Change-Id: I6164092b01a6ccb525a9516f476e066b35fb1f96
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2685177
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72862}
Bug: v8:7790
Bug: v8:11463
Change-Id: I7c8a54c814b92c8632fb0bcf5a33f57fec159443
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2710440
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72956}
This reverts commit ed225df70c.
Reason for revert: Blocks the roll, causing compile failures in Chromium:
https://ci.chromium.org/p/chromium/builders/try/win_chromium_compile_dbg_ng/800868?
Original change's description:
> [objects] Cache the ExternalString's data in its resource
>
> For external uncached strings (also called "Small External Strings")
> with cacheable resources, we can cache its resource's data at the
> string's creation time. This allows us to safely read the data from the
> background as we wouldn't trigger a data() callback.
>
> For more information regarding the investigation and possible proposals
> see
> https://docs.google.com/document/d/101eAQqFpBPWFGNJicxtdlwYShJkTOUsEuxkVVeu5Hrk/edit?usp=sharing
>
> Bug: v8:7790, v8:11463
> Change-Id: I6164092b01a6ccb525a9516f476e066b35fb1f96
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2685177
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72862}
Bug: v8:7790
Bug: v8:11463
Change-Id: I1d14c2f9872d156d43d5d95c8a032a37ba9379cb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2708824
Auto-Submit: Bill Budge <bbudge@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72880}
For external uncached strings (also called "Small External Strings")
with cacheable resources, we can cache its resource's data at the
string's creation time. This allows us to safely read the data from the
background as we wouldn't trigger a data() callback.
For more information regarding the investigation and possible proposals
see
https://docs.google.com/document/d/101eAQqFpBPWFGNJicxtdlwYShJkTOUsEuxkVVeu5Hrk/edit?usp=sharing
Bug: v8:7790, v8:11463
Change-Id: I6164092b01a6ccb525a9516f476e066b35fb1f96
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2685177
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72862}
The current API returns a Handle<NativeContext> which can be
optionally null and all the users of this API never actually
checked for this null value.
Previously, this wasn't a problem as all the possible JSObjects
that were user visible would return a valid NativeContext but now
there are wasm objects that don't have a valid constructor so don't
have a NativeContext.
Bug: v8:11451, chromium:1166077
Change-Id: I4fd5edf8f1a750e6f0abb931fd41358e5ae4dfcf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2692695
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72769}
The origin trial for WebAssembly Threads is over for quite some time,
WebAssembly Threads are enabled by default. The API can therefore be
removed now.
Bug: v8:11384
Change-Id: I3dd65ff63c1ed31d39a76e5aea08b950ef420f54
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2690598
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72766}
With top-level await, when Evaluate is performed on an already-evaluated
synthetic module, Module::InnerEvaluate returns undefined. This breaks
top-level await's assumption that the returned value is always a
promise.
In order to make SyntheticModule's behavior consistent with
SourceTextModule, the top_level_capability field is moved up to Module
and SyntheticModule::Evaluate places the promise returned from the
host's evaluation steps in that field. Now SourceTextModule and
SyntheticModule can share the same code to handle the case where the
module is either kErrored or kEvaluated, so the code for this
is moved up to Module.
Thus, SyntheticModule is now guaranteed to return the
promise from the evaluation steps even on subsequent Evaluate() calls.
Unfortunately Node hasn't yet updated their EvaluationStepsCallback
to return a Promise, so we can't yet assume that the returned value
is a Promise without breaking Node. So, this change also adds a clause
to check for this condition and create a new resolved Promise if one
was not provided by the callback steps. This could eventually be
removed once Node's callback steps are updated for top-level await.
Change-Id: I2d6ae918abfeba9e3a757838502d4df92946edaa
Bug: v8:11398
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2673794
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Dan Clark <daniec@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#72629}
The implementation is similar to the callbacks that already exist for
the origin trial for WebAssembly simd.
Bug: v8:8091
Change-Id: I969b68c209ea62cf70dbaf317616300b782b5e14
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672020
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72628}
The detached CppHeap allows for allocation without invoking garbage
collections. Allocated bytes are reported on the first allocation
after the CppHeap has been attached to an Isolate.
States:
- Detached: Allow only allocation;
- Attached: Unified heap GCs;
- Termination GC: Require detached state;
Destruction:
- Heap::TearDown: Detach if attached;
- ~CppHeap: Detach if attached;
Bug: chromium:1056170
Change-Id: I95ce029f36a7f10392257080b6e23e13cc0fc7b8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672940
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72579}
Advance v8::Isolate::CreateParams::supported_import_assertions from
V8_DEPRECATE_SOON to V8_DEPRECATED now that Blink has stopped
setting it.
Bug: v8:10958
Change-Id: I502f08c0c2e424f3afae3a6cb11835376a847bcb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2656936
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Dan Clark <daniec@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#72436}
This change completes support for import assertions for dynamic import().
A new version of the HostImportModuleDynamically callback taking import
assertions is added to the public API. The name is very verbose; we
could consider removing the "ImportAssertions" part when the old API
is removed.
Bytecode generation is updated to pass the assertions, if present, to
Runtime_DynamicImportCall.
Isolate::RunHostImportModuleDynamicallyCallback extracts the assertions
from the options bag, filters out the assertions not present in the
list specified by the host in HostGetSupportedImportAssertions, and
sorts them by code point order of the keys per
https://tc39.es/proposal-import-assertions/#sec-import-call-runtime-semantics-evaluation.
The resulting array is passed to the host in the callback.
Bug: v8:10958
Change-Id: I931df00f954a9f9c65bff5bcf461ba1c8f11e94e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2620578
Commit-Queue: Dan Clark <daniec@microsoft.com>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72307}
This CL implements the upcoming spec change:
https://github.com/tc39/proposal-regexp-match-indices/pull/49
A new JSRegExpResultWithIndices subclass is introduced with a separate map and
an extra slot for storing the indices. If /d is passed, exec() constructs a
JSRegExpResultWithIndices and eagerly builds indices.
The existing re-execution logic is removed.
Bug: v8:9548
Change-Id: Ic11853e7521017af5e8bd583c7b82bb672821132
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616873
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72306}
The change https://chromium-review.googlesource.com/c/v8/v8/+/2572173
implemented HostGetSupportedImportAssertions [1] in a fairly literal
sense, where the host supplies a list of supported import assertions
and V8 filters the import assertions in a ModuleRequest and exposes
only supported assertions via its API surface.
However, we've decided that the interop guarantees provided
by doing the filtering in V8 are probably not worth the added
complexity. Thus, this change removes the filtering. Going forward,
hosts will be expected to ignore unknown asserions received from V8.
This is mostly a revert of
https://chromium-review.googlesource.com/c/v8/v8/+/2572173, with
v8::Isolate::CreateParams::supported_import_assertions being kept
for now (since we first have to delete the Blink code that sets it),
and a new comment in v8.h instructing hosts to ignore unknown
assertions.
[1] https://tc39.es/proposal-import-assertions/#sec-hostgetsupportedimportassertions
Bug: v8:10958
Change-Id: I7e8e2a7fbfe2d5bf891805cff6c3160d0e6825cd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2643563
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Dan Clark <daniec@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#72299}
This CL introduces a new internal class PerIsolateAssertSwitch which
gives a static Allow/Disallow interface to be used from within classes
such as DisallowJavascriptExecutionScope without the need for slow heap
allocations.
Bug: chromium:1155348
Change-Id: I66cd8377b5d9c43510165cd7b9a7f5ccdaf45c18
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2617086
Auto-Submit: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72273}
The compatibility fixes have been standardized.
Bug: chromium:581577
Change-Id: I4ab1df59cbcb4bcbcfe9e3a3c658b2d6b81fe68e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2633539
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72210}
Context objects are allocated on the heap and thus should be Data
objects. This allows handling them through tracing in the GC through
the API.
Bug: chromium:1013149
Change-Id: Id3a7bfd57fab19a5669062ccf61c2f8588faf0bb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627307
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72120}
Remove the ambient dependency on the currently entered isolate, let the
embedder pass it in explicitly.
Bug: v8:11287
Change-Id: I03690390a308a59e2c6ea5c6ae268780d836b717
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2608209
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72105}
bulk-memory shipped in V8 v7.5, hence the feature flag can be removed
now. This saves some binary size and a few dynamic checks for the flag.
R=ahaas@chromium.org
Bug: v8:11074
Change-Id: Ia73622637939f2192940fdd6909520786ed27286
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2622913
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72045}
Implement the HostGetSupportedImportAssertions, whose purpose
is to filter the list of import assertions exposed to the embedder to
only those assertion with keys that the embedder recognizes. See
https://tc39.es/proposal-import-assertions/#sec-hostgetsupportedimportassertions.
This change doesn't actually implement it as a callback, but instead
passes the supported assertions during creation of the Isolate via
CreateParams. This expresses clearly the requirement that the supported
assertions must never change for the lifetime of the Isolate.
Note that we still need to maintain all assertions in a map
while parsing the import assertions clause, because duplicate keys for
an unsupported assertion still needs to be detected as a parse error. So,
the filtering is done later during
SourceTextModuleDescriptor::AstModuleRequest::Serialize.
The actual filtering algorithm simply iterates the assertions and the
supported assertion keys in a nested loop. There's currently only one
assertion in use ("type"), so there should be no reason to get too
clever here unless at least several more assertions are generally
supported.
Bug: v8:10958
Change-Id: I9a2d965e9d452718d0ddfe9dca55b7b4ed963019
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2572173
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Dan Clark <daniec@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#71776}
The rest of the code base was already migrated last year in
https://crrev.com/c/1631409. In the API we have to be more careful to
not break embedders. According to the standard there is no semantic
difference between typedef and using ([decl.typedef#2]):
A typedef-name can also be introduced by an alias-declaration. The
identifier following the using keyword becomes a typedef-name and the
optional attribute-specifier-seq following the identifier appertains
to that typedef-name. Such a typedef-name has the same semantics as if
it were introduced by the typedef specifier.
Thus this CL replaces all typedefs in include/v8.h by the equivalent
using declaration. This improves readability, especially for function
pointer types.
R=ulan@chromium.orgCC=leszeks@chromium.org
Bug: v8:11074
Change-Id: Id917b6aa5c8cd289c60bda5da1e3667e747936e7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2563880
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71719}
Add a method that returns the microtask queue that is being used
by the `v8::Context`.
This is helpful in non-monolithic embedders like Node.js, which
accept Contexts created by its own embedders like Electron, or
for native Node.js addons. In particular, it enables:
1. Making sure that “nested” `Context`s use the correct microtask
queue, i.e. the one from the outer Context.
2. Enqueueing microtasks into the correct microtask queue.
Previously, these things only worked when the microtask queue for
a given Context was the Isolate’s default queue.
As an alternative, I considered adding a way to make new `Context`s
inherit the queue from the `Context` that was entered at the time
of their creation, but that seemed a bit more “magic”, less flexible,
and didn’t take care of concern 2 listed above.
Change-Id: I15ed796df90f23c97a545a8e1b30a3bf4a5c4320
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2579914
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71710}
