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Seth Brenith 6745405f40 [torque] Get rid of weak keyword 
Torque allows a `weak` keyword on class field declarations. This keyword
is confusing, because it means two completely different things:

1. This field should be included in the weak fields section, meaning the
   field's offset should be in the range [kStartOfWeakFieldsOffset,
   kEndOfWeakFieldsOffset).
2. If a BodyDescriptor is generated for this class, then this field
   should be visited using *custom* weakness semantics
   (IterateCustomWeakPointers, not IterateMaybeObjectPointers).

I propose the following updated behavior, which I think is a bit more
reasonable:

1. To request that the generated BodyDescriptor use custom weakness
   semantics, use a new annotation @customWeakMarking.
2. The weak fields section includes all fields that can be a Weak<T>
   type, plus those annotated with @customWeakMarking.

These new rules require reordering fields in two classes which didn't
already have all of their strong fields adjacent.

Bug: v8:7793
Change-Id: Ic9d741986afa7fc1be3de044af5cae11a3c64d8c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3261968
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77739}
2021-11-05 17:11:40 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
bazel [bazel] Fix wrong path to config pkg 2021-10-29 11:02:56 +00:00
build_overrides [build] Remove obsolete gn flag 2021-01-11 15:50:59 +00:00
custom_deps Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
docs Add OWNERS for docs/ 2019-05-15 12:06:15 +00:00
gni [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
include [api] Introduce new HostImportModuleDynamicallyCallback 2021-11-05 14:35:43 +00:00
infra [infra] Clean up MB config after main Linux builder split and refactoring 2021-11-05 10:07:27 +00:00
samples [cleanup] Fix -Wshadow warnings in samples/shell 2021-09-24 22:58:35 +00:00
src [torque] Get rid of weak keyword 2021-11-05 17:11:40 +00:00
test Avoid using "<<<<" for better merge conflict grep support 2021-11-05 16:28:59 +00:00
testing [test][cleanup] Fix -Wshadow warnings in unittests 2021-09-27 08:59:01 +00:00
third_party Manually update google_benchmark 2021-10-21 16:36:41 +00:00
tools [wasm] Add WebAssembly.Suspender object 2021-11-05 14:42:23 +00:00
.bazelrc [bazel] Support build mode compilation 2021-07-13 10:14:16 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.clang-tidy [tool] Remove unfixed clang-tidy warnings to ease use. 2018-10-26 07:40:32 +00:00
.editorconfig Add .editorconfig 2017-07-28 13:39:24 +00:00
.flake8 remove swarming_client 2021-08-24 10:39:33 +00:00
.git-blame-ignore-revs [infra] Update .git-blame-ignore-revs 2020-03-03 12:59:13 +00:00
.gitattributes .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore remove swarming_client 2021-08-24 10:39:33 +00:00
.gn Revert "[build] Separate out inspector as a shared library" 2021-07-02 16:15:20 +00:00
.mailmap Restore consistency between .mailmap and AUTHORS 2021-06-24 08:58:04 +00:00
.vpython Verify mac-arm64 wheels for v8/.vpython spec. 2021-09-15 21:11:50 +00:00
.ycm_extra_conf.py [ycm] Fix python script 2021-07-29 09:48:32 +00:00
AUTHORS Add arm64 support for running samples 2021-11-02 13:53:52 +00:00
BUILD.bazel [bazel] Remove d8 alias 2021-11-02 11:24:41 +00:00
BUILD.gn ppc/s390: [baseline] Add placeholder for sparkplug 2021-10-29 15:16:27 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings Make Gerrit the default code review for V8 2017-06-30 17:37:37 +00:00
COMMON_OWNERS Remove neis@ from owners file 2021-10-26 11:15:20 +00:00
DEPS Update google_benchmark 2021-11-05 05:30:28 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
ENG_REVIEW_OWNERS Add verwaest@ to ENG_REVIEW_OWNERS. 2021-09-16 15:00:57 +00:00
INFRA_OWNERS Add team members as owners 2020-08-18 08:29:04 +00:00
INTL_OWNERS add ftang as owner 2020-04-24 19:19:36 +00:00
LICENSE [wasm] Draft version of C/C++ Wasm API 2019-04-17 16:00:26 +00:00
LICENSE.fdlibm Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LOONG_OWNERS [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
MIPS_OWNERS [mips] Add LiuYu to MIPS_OWNERS 2021-09-08 01:38:52 +00:00
OWNERS Make autoroll account owner of auto-updated file 2021-08-24 15:05:13 +00:00
PPC_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
PRESUBMIT.py [bigint] Move multiplication to src/bigint/ 2021-04-19 15:40:43 +00:00
README.md [docs] Change links from old wiki to v8.dev 2019-03-07 12:13:30 +00:00
RISCV_OWNERS Add Lu Yahan to RISC-V owners list 2021-09-13 16:35:00 +00:00
S390_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
WATCHLISTS Move unified heap unittests into cppgc-js directory 2021-11-04 15:12:52 +00:00
WORKSPACE [bazel] Upstream BUILD and create config pkg 2021-10-28 15:14:40 +00:00

README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://v8.dev/docs

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned at v8.dev/docs/contribute.