src: use effective cppgc wrapper id to deduce non-cppgc id #48660
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Review requested:
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nodejs-github-bot
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The V8 cherry-pick should have also bumped |
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@richardlau Thanks for catching it, it probably happened because I created the backport commit before ce4102e landed. I've amended the first commit. |
This was referenced Jul 6, 2023
legendecas
approved these changes
Jul 7, 2023
gengjiawen
approved these changes
Jul 7, 2023
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Did this get a V8 CI run? |
joyeecheung
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23 tasks
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Looks like there is a build error in our build machine, perhaps depot_tools is out of date ? |
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Rebased to resolve merge conflict |
This was referenced Jul 9, 2023
Ceres6
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Aug 14, 2023
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 <[email protected]>
Commit-Queue: Michael Lippautz <[email protected]>
Cr-Commit-Position: refs/heads/main@{#88490}
Refs: v8/v8@9327503
PR-URL: nodejs#48660
Reviewed-By: Chengzhong Wu <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>
Ceres6
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this pull request
Aug 14, 2023
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 <[email protected]> Reviewed-By: Jiawen Geng <[email protected]>
joyeecheung
added a commit
to joyeecheung/node
that referenced
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Aug 15, 2023
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 <[email protected]>
Commit-Queue: Michael Lippautz <[email protected]>
Cr-Commit-Position: refs/heads/main@{#88490}
Refs: v8/v8@9327503
PR-URL: nodejs#48660
Reviewed-By: Chengzhong Wu <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>
joyeecheung
added a commit
to joyeecheung/node
that referenced
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Aug 15, 2023
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 <[email protected]> Reviewed-By: Jiawen Geng <[email protected]>
joyeecheung
added a commit
to joyeecheung/node
that referenced
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Aug 15, 2023
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 <[email protected]>
Commit-Queue: Michael Lippautz <[email protected]>
Cr-Commit-Position: refs/heads/main@{#88490}
Refs: v8/v8@9327503
PR-URL: nodejs#48660
Reviewed-By: Chengzhong Wu <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>
joyeecheung
added a commit
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that referenced
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Aug 15, 2023
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 <[email protected]> Reviewed-By: Jiawen Geng <[email protected]>
joyeecheung
added a commit
to joyeecheung/node
that referenced
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Aug 17, 2023
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 <[email protected]>
Commit-Queue: Michael Lippautz <[email protected]>
Cr-Commit-Position: refs/heads/main@{#88490}
Refs: v8/v8@9327503
PR-URL: nodejs#48660
Reviewed-By: Chengzhong Wu <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>
joyeecheung
added a commit
to joyeecheung/node
that referenced
this pull request
Aug 17, 2023
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 <[email protected]> Reviewed-By: Jiawen Geng <[email protected]>
UlisesGascon
pushed a commit
that referenced
this pull request
Aug 18, 2023
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 <[email protected]>
Commit-Queue: Michael Lippautz <[email protected]>
Cr-Commit-Position: refs/heads/main@{#88490}
Refs: v8/v8@9327503
PR-URL: #48660
Backport-PR-URL: #49187
Reviewed-By: Chengzhong Wu <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>
Refs: #40786
Refs: https://docs.google.com/document/d/1ny2Qz_EsUnXGKJRGxoA-FXIE2xpLgaMAN6jD7eAkqFQ/edit
UlisesGascon
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this pull request
Aug 18, 2023
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 <[email protected]> Reviewed-By: Jiawen Geng <[email protected]> Refs: #40786 Refs: https://docs.google.com/document/d/1ny2Qz_EsUnXGKJRGxoA-FXIE2xpLgaMAN6jD7eAkqFQ/edit
UlisesGascon
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that referenced
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Aug 18, 2023
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 <[email protected]> Refs: #40786 PR-URL: #45704 Backport-PR-URL: #49187 Refs: https://docs.google.com/document/d/1ny2Qz_EsUnXGKJRGxoA-FXIE2xpLgaMAN6jD7eAkqFQ/edit Reviewed-By: Stephen Belanger <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> PR-URL: #48660 Refs: v8/v8@9327503
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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
Merged
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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
UlisesGascon
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Aug 22, 2023
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
UlisesGascon
added a commit
that referenced
this pull request
Aug 22, 2023
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
UlisesGascon
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Aug 22, 2023
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
UlisesGascon
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Aug 22, 2023
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
UlisesGascon
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Aug 22, 2023
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
UlisesGascon
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Aug 22, 2023
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
UlisesGascon
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Aug 24, 2023
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
UlisesGascon
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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
UlisesGascon
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Aug 31, 2023
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
UlisesGascon
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Sep 1, 2023
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
juanarbol
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Sep 4, 2023
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
alexfernandez
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Nov 1, 2023
Notable changes: deps: * V8: cherry-pick 93275031284c (Joyee Cheung) nodejs#48660 doc: * add new TSC members (Michael Dawson) nodejs#48841 * add rluvaton to collaborators (Raz Luvaton) nodejs#49215 esm: * unflag import.meta.resolve (Guy Bedford) nodejs#49028 * add `initialize` hook, integrate with `register` (Izaak Schroeder) nodejs#48842 * unflag `Module.register` and allow nested loader `import()` (Izaak Schroeder) nodejs#48559 inspector: * (SEMVER-MINOR) open add `SymbolDispose` (Chemi Atlow) nodejs#48765 module: * implement `register` utility (João Lenon) nodejs#46826 * make CJS load from ESM loader (Antoine du Hamel) nodejs#47999 src: * add built-in `.env` file support (Yagiz Nizipli) nodejs#48890 * initialize cppgc (Daryl Haresign and Joyee Cheung) nodejs#48660 and nodejs#45704 test_runner: * (SEMVER-MINOR) expose location of tests (Colin Ihrig) nodejs#48975 PR-URL: nodejs#49185
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minglechen
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Dec 11, 2024
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 <[email protected]>
Commit-Queue: Michael Lippautz <[email protected]>
Cr-Commit-Position: refs/heads/main@{#88490}
Refs: v8/v8@9327503
PR-URL: nodejs#48660
Backport-PR-URL: nodejs#49187
Reviewed-By: Chengzhong Wu <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>
Refs: nodejs#40786
Refs: https://docs.google.com/document/d/1ny2Qz_EsUnXGKJRGxoA-FXIE2xpLgaMAN6jD7eAkqFQ/edit
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deps: V8: cherry-pick 93275031284c
Original commit message:
Refs: v8/v8@9327503
src: use effective cppgc wrapper id to deduce non-cppgc id
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.
Refs: #48660