Original commit message:

    [cppgc] expose wrapper descriptor on CppHeap

    This makes it possible for embedders to:

    1. Avoid creating wrapper objects that happen to have a layout that
      leads V8 to consider the object cppgc-managed while it's not.
      Refs: nodejs#43521
    2. Create cppgc-managed wrapper objects when they do not own the
       CppHeap. Refs: nodejs#45704

    Bug: v8:13960
    Change-Id: If31f4d56c5ead59dc0d56f937494d23d631f7438
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4598833
    Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
    Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#88490}

Refs: v8/v8@9327503
PR-URL: nodejs#48660
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Previously we hard-code a wrapper id to be used in BaseObjects
to avoid accidentally triggering cppgc on these non-cppgc-managed
objects, but hard-coding can be be hacky and result in mismatch
when we start to create CppHeap ourselves. This patch makes it
more robust by deducing non-cppgc id from the effective cppgc id,
if there is one.

PR-URL: nodejs#48660
Refs: v8/v8@9327503
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Original commit message:

    [cppgc] expose wrapper descriptor on CppHeap

    This makes it possible for embedders to:

    1. Avoid creating wrapper objects that happen to have a layout that
      leads V8 to consider the object cppgc-managed while it's not.
      Refs: nodejs#43521
    2. Create cppgc-managed wrapper objects when they do not own the
       CppHeap. Refs: nodejs#45704

    Bug: v8:13960
    Change-Id: If31f4d56c5ead59dc0d56f937494d23d631f7438
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4598833
    Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
    Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#88490}

Refs: v8/v8@9327503
PR-URL: nodejs#48660
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Previously we hard-code a wrapper id to be used in BaseObjects
to avoid accidentally triggering cppgc on these non-cppgc-managed
objects, but hard-coding can be be hacky and result in mismatch
when we start to create CppHeap ourselves. This patch makes it
more robust by deducing non-cppgc id from the effective cppgc id,
if there is one.

PR-URL: nodejs#48660
Refs: v8/v8@9327503
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Original commit message:

    [cppgc] expose wrapper descriptor on CppHeap

    This makes it possible for embedders to:

    1. Avoid creating wrapper objects that happen to have a layout that
      leads V8 to consider the object cppgc-managed while it's not.
      Refs: nodejs#43521
    2. Create cppgc-managed wrapper objects when they do not own the
       CppHeap. Refs: nodejs#45704

    Bug: v8:13960
    Change-Id: If31f4d56c5ead59dc0d56f937494d23d631f7438
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4598833
    Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
    Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#88490}

Refs: v8/v8@9327503
PR-URL: nodejs#48660
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Previously we hard-code a wrapper id to be used in BaseObjects
to avoid accidentally triggering cppgc on these non-cppgc-managed
objects, but hard-coding can be be hacky and result in mismatch
when we start to create CppHeap ourselves. This patch makes it
more robust by deducing non-cppgc id from the effective cppgc id,
if there is one.

PR-URL: nodejs#48660
Refs: v8/v8@9327503
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Original commit message:

    [cppgc] expose wrapper descriptor on CppHeap

    This makes it possible for embedders to:

    1. Avoid creating wrapper objects that happen to have a layout that
      leads V8 to consider the object cppgc-managed while it's not.
      Refs: #43521
    2. Create cppgc-managed wrapper objects when they do not own the
       CppHeap. Refs: #45704

    Bug: v8:13960
    Change-Id: If31f4d56c5ead59dc0d56f937494d23d631f7438
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4598833
    Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
    Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#88490}

Refs: v8/v8@9327503
PR-URL: #48660
Backport-PR-URL: #49187
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Refs: #40786
Refs: https://docs.google.com/document/d/1ny2Qz_EsUnXGKJRGxoA-FXIE2xpLgaMAN6jD7eAkqFQ/edit

Previously we hard-code a wrapper id to be used in BaseObjects
to avoid accidentally triggering cppgc on these non-cppgc-managed
objects, but hard-coding can be be hacky and result in mismatch
when we start to create CppHeap ourselves. This patch makes it
more robust by deducing non-cppgc id from the effective cppgc id,
if there is one.

PR-URL: #48660
Backport-PR-URL: #49187
Refs: v8/v8@9327503
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Refs: #40786
Refs: https://docs.google.com/document/d/1ny2Qz_EsUnXGKJRGxoA-FXIE2xpLgaMAN6jD7eAkqFQ/edit

This patch:

- Initializes cppgc in InitializeOncePerProcess() when
  kNoInitializeCppgc is not set
- Create a CppHeap and attach it to the Isolate when
  there isn't one already during IsolateData initialization.
  The CppHeap is detached and terminated when IsolateData
  is freed.
- Publishes the cppgc headers in the tarball.

This allows C++ addons to start using cppgc to manage objects.

A helper node::SetCppgcReference() is also added to help addons
enable cppgc tracing in a user-defined object.

Co-authored-by: Joyee Cheung <joyeec9h3@gmail.com>
Refs: #40786
PR-URL: #45704
Backport-PR-URL: #49187
Refs: https://docs.google.com/document/d/1ny2Qz_EsUnXGKJRGxoA-FXIE2xpLgaMAN6jD7eAkqFQ/edit
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
PR-URL: #48660
Refs: v8/v8@9327503

Notable changes:

deps:
  * V8: cherry-pick 93275031284c (Joyee Cheung) #48660
doc:
  * add new TSC members (Michael Dawson) #48841
  * add rluvaton to collaborators (Raz Luvaton) #49215
esm:
  * unflag import.meta.resolve (Guy Bedford) #49028
  * add `initialize` hook, integrate with `register` (Izaak Schroeder) #48842
  * unflag `Module.register` and allow nested loader `import()` (Izaak Schroeder) #48559
inspector:
  * (SEMVER-MINOR) open add `SymbolDispose` (Chemi Atlow) #48765
test_runner:
  * (SEMVER-MINOR) expose location of tests (Colin Ihrig) #48975
module:
  * implement `register` utility (João Lenon) #46826
  * make CJS load from ESM loader (Antoine du Hamel) #47999
src:
  * add built-in `.env` file support (Yagiz Nizipli) #48890

PR-URL: #49185

Notable changes:

deps:
  * V8: cherry-pick 93275031284c (Joyee Cheung) #48660
doc:
  * add new TSC members (Michael Dawson) #48841
  * add rluvaton to collaborators (Raz Luvaton) #49215
esm:
  * unflag import.meta.resolve (Guy Bedford) #49028
  * add `initialize` hook, integrate with `register` (Izaak Schroeder) #48842
  * unflag `Module.register` and allow nested loader `import()` (Izaak Schroeder) #48559
inspector:
  * (SEMVER-MINOR) open add `SymbolDispose` (Chemi Atlow) #48765
module:
  * implement `register` utility (João Lenon) #46826
  * make CJS load from ESM loader (Antoine du Hamel) #47999
src:
  * add built-in `.env` file support (Yagiz Nizipli) #48890
  * initialize cppgc (Daryl Haresign and Joyee Cheung) #48660 and #45704
test_runner:
  * (SEMVER-MINOR) expose location of tests (Colin Ihrig) #48975

PR-URL: #49185

Notable changes:

deps:
  * V8: cherry-pick 93275031284c (Joyee Cheung) #48660
doc:
  * add new TSC members (Michael Dawson) #48841
  * add rluvaton to collaborators (Raz Luvaton) #49215
esm:
  * unflag import.meta.resolve (Guy Bedford) #49028
  * add `initialize` hook, integrate with `register` (Izaak Schroeder) #48842
  * unflag `Module.register` and allow nested loader `import()` (Izaak Schroeder) #48559
inspector:
  * (SEMVER-MINOR) open add `SymbolDispose` (Chemi Atlow) #48765
module:
  * implement `register` utility (João Lenon) #46826
  * make CJS load from ESM loader (Antoine du Hamel) #47999
src:
  * add built-in `.env` file support (Yagiz Nizipli) #48890
  * initialize cppgc (Daryl Haresign and Joyee Cheung) #48660 and #45704
test_runner:
  * (SEMVER-MINOR) expose location of tests (Colin Ihrig) #48975

PR-URL: #49185

Notable changes:

deps:
  * V8: cherry-pick 93275031284c (Joyee Cheung) #48660
doc:
  * add new TSC members (Michael Dawson) #48841
  * add rluvaton to collaborators (Raz Luvaton) #49215
esm:
  * unflag import.meta.resolve (Guy Bedford) #49028
  * add `initialize` hook, integrate with `register` (Izaak Schroeder) #48842
  * unflag `Module.register` and allow nested loader `import()` (Izaak Schroeder) #48559
inspector:
  * (SEMVER-MINOR) open add `SymbolDispose` (Chemi Atlow) #48765
module:
  * implement `register` utility (João Lenon) #46826
  * make CJS load from ESM loader (Antoine du Hamel) #47999
src:
  * add built-in `.env` file support (Yagiz Nizipli) #48890
  * initialize cppgc (Daryl Haresign and Joyee Cheung) #48660 and #45704
test_runner:
  * (SEMVER-MINOR) expose location of tests (Colin Ihrig) #48975

PR-URL: #49185

Notable changes:

deps:
  * V8: cherry-pick 93275031284c (Joyee Cheung) #48660
doc:
  * add new TSC members (Michael Dawson) #48841
  * add rluvaton to collaborators (Raz Luvaton) #49215
esm:
  * unflag import.meta.resolve (Guy Bedford) #49028
  * add `initialize` hook, integrate with `register` (Izaak Schroeder) #48842
  * unflag `Module.register` and allow nested loader `import()` (Izaak Schroeder) #48559
inspector:
  * (SEMVER-MINOR) open add `SymbolDispose` (Chemi Atlow) #48765
module:
  * implement `register` utility (João Lenon) #46826
  * make CJS load from ESM loader (Antoine du Hamel) #47999
src:
  * add built-in `.env` file support (Yagiz Nizipli) #48890
  * initialize cppgc (Daryl Haresign and Joyee Cheung) #48660 and #45704
test_runner:
  * (SEMVER-MINOR) expose location of tests (Colin Ihrig) #48975

PR-URL: #49185

Notable changes:

deps:
  * V8: cherry-pick 93275031284c (Joyee Cheung) #48660
doc:
  * add new TSC members (Michael Dawson) #48841
  * add rluvaton to collaborators (Raz Luvaton) #49215
esm:
  * unflag import.meta.resolve (Guy Bedford) #49028
  * add `initialize` hook, integrate with `register` (Izaak Schroeder) #48842
  * unflag `Module.register` and allow nested loader `import()` (Izaak Schroeder) #48559
inspector:
  * (SEMVER-MINOR) open add `SymbolDispose` (Chemi Atlow) #48765
module:
  * implement `register` utility (João Lenon) #46826
  * make CJS load from ESM loader (Antoine du Hamel) #47999
src:
  * add built-in `.env` file support (Yagiz Nizipli) #48890
  * initialize cppgc (Daryl Haresign and Joyee Cheung) #48660 and #45704
test_runner:
  * (SEMVER-MINOR) expose location of tests (Colin Ihrig) #48975

PR-URL: #49185

Notable changes:

deps:
  * V8: cherry-pick 93275031284c (Joyee Cheung) #48660
doc:
  * add new TSC members (Michael Dawson) #48841
  * add rluvaton to collaborators (Raz Luvaton) #49215
esm:
  * unflag import.meta.resolve (Guy Bedford) #49028
  * add `initialize` hook, integrate with `register` (Izaak Schroeder) #48842
  * unflag `Module.register` and allow nested loader `import()` (Izaak Schroeder) #48559
inspector:
  * (SEMVER-MINOR) open add `SymbolDispose` (Chemi Atlow) #48765
module:
  * implement `register` utility (João Lenon) #46826
  * make CJS load from ESM loader (Antoine du Hamel) #47999
src:
  * add built-in `.env` file support (Yagiz Nizipli) #48890
  * initialize cppgc (Daryl Haresign and Joyee Cheung) #48660 and #45704
test_runner:
  * (SEMVER-MINOR) expose location of tests (Colin Ihrig) #48975

PR-URL: #49185

Original commit message:

    [cppgc] expose wrapper descriptor on CppHeap

    This makes it possible for embedders to:

    1. Avoid creating wrapper objects that happen to have a layout that
      leads V8 to consider the object cppgc-managed while it's not.
      Refs: nodejs#43521
    2. Create cppgc-managed wrapper objects when they do not own the
       CppHeap. Refs: nodejs#45704

    Bug: v8:13960
    Change-Id: If31f4d56c5ead59dc0d56f937494d23d631f7438
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4598833
    Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
    Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#88490}

Refs: v8/v8@9327503
PR-URL: nodejs#48660
Backport-PR-URL: nodejs#49187
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Refs: nodejs#40786
Refs: https://docs.google.com/document/d/1ny2Qz_EsUnXGKJRGxoA-FXIE2xpLgaMAN6jD7eAkqFQ/edit