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PR-URL: https://github.com/nodejs/node/pull/37330
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
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When a process exits cleanly, i.e. because the event loop ends up
without things to wait for, the Node.js objects that are left on
the heap should be:
1. weak, i.e. ready for garbage collection once no longer
referenced, or
2. detached, i.e. scheduled for destruction once no longer
referenced, or
3. an unrefed libuv handle, i.e. does not keep the event loop
alive, or
4. an inactive libuv handle (essentially the same here)
There are a few exceptions to this rule, but generally,
if there are C++-backed Node.js objects on the heap
that do not fall into the above categories, we may be looking
at a potential memory leak. Most likely, the cause is a missing
`MakeWeak()` call on the corresponding object.
In order to avoid this kind of problem, we check the list
of BaseObjects for these criteria. In this commit, we only do so
when explicitly instructed to or when in debug mode
(where --verify-base-objects is always-on).
In particular, this avoids the kinds of memory leak issues
that were fixed in the PRs referenced below.
Refs: https://github.com/nodejs/node/pull/35488
Refs: https://github.com/nodejs/node/pull/35487
Refs: https://github.com/nodejs/node/pull/35481
PR-URL: https://github.com/nodejs/node/pull/35490
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
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Use internal fields instead of `v8::Global`s where possible, since
they generally come with lower overhead and it’s much harder to
introduce memory leaks with them.
PR-URL: https://github.com/nodejs/node/pull/34470
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
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This allows timeouts to apply to e.g. `Promise`s and `async function`s
from code running inside of `vm.Context`s, by giving the Context its
own microtasks queue.
Fixes: https://github.com/nodejs/node/issues/3020
PR-URL: https://github.com/nodejs/node/pull/34023
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
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There is no reason for this to be in C++. Using JavaScript means that
the code is more accessible to more developers, which is important
for any Node.js feature. This also simplifies the code significantly
in some areas. On the technical side, this potentially also enables
making some of the file system operations that are involved
asynchronous.
PR-URL: https://github.com/nodejs/node/pull/32201
Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/31278
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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Node codebase has evolved a lot in the more than 10 years of its
existence. As more features (and code) have been added, changed,
removed, it's sometimes hard to keep track of what gets used and what
not.
This commits attempts to clean some of those potentially left-over
headers using suggestions from include-what-you-use
Refs: https://github.com/nodejs/node/issues/27531
PR-URL: https://github.com/nodejs/node/pull/30328
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/29846
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
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- Removes redundant `instantiate` method
- Refactors `link` to match the spec linking steps more accurately
- Removes URL validation from SourceTextModule specifiers
- DRYs some dynamic import logic
Closes: https://github.com/nodejs/node/issues/29030
Co-Authored-By: Michaël Zasso <targos@protonmail.com>
PR-URL: https://github.com/nodejs/node/pull/29776
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
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`v8::Global` is essentially a nicer variant of `node::Persistent` that,
in addition to reset-on-destroy, also implements move semantics.
This commit makes the necessary replacements, removes
`node::Persistent` and (now-)unnecessary inclusions of the
`node_persistent.h` header, and makes some of the functions that
take Persistents as arguments more generic so that they work with all
`v8::PersistentBase` flavours.
PR-URL: https://github.com/nodejs/node/pull/27287
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/26815
Reviewed-By: Refael Ackermann <refack@gmail.com>
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This PR updates the current `--experimental-modules` implementation
based on the work of the modules team and reflects Phase 2 of our
new modules plan.
The largest differences from the current implementation include
* `packge.type` which can be either `module` or `commonjs`
- `type: "commonjs"`:
- `.js` is parsed as commonjs
- default for entry point without an extension is commonjs
- `type: "module"`:
- `.js` is parsed as esm
- does not support loading JSON or Native Module by default
- default for entry point without an extension is esm
* `--entry-type=[mode]`
- allows you set the type on entry point.
* A new file extension `.cjs`.
- this is specifically to support importing commonjs in the
`module` mode.
- this is only in the esm loader, the commonjs loader remains
untouched, but the extension will work in the old loader if you use
the full file path.
* `--es-module-specifier-resolution=[type]`
- options are `explicit` (default) and `node`
- by default our loader will not allow for optional extensions in
the import, the path for a module must include the extension if
there is one
- by default our loader will not allow for importing directories that
have an index file
- developers can use `--es-module-specifier-resolution=node` to
enable the commonjs specifier resolution algorithm
- This is not a “feature” but rather an implementation for
experimentation. It is expected to change before the flag is
removed
* `--experimental-json-loader`
- the only way to import json when `"type": "module"`
- when enable all `import 'thing.json'` will go through the
experimental loader independent of mode
- based on https://github.com/whatwg/html/issues/4315
* You can use `package.main` to set an entry point for a module
- the file extensions used in main will be resolved based on the
`type` of the module
Refs: https://github.com/nodejs/modules/blob/master/doc/plan-for-new-modules-implementation.md
Refs: https://github.com/GeoffreyBooth/node-import-file-specifier-resolution-proposal
Refs: https://github.com/nodejs/modules/pull/180
Refs: https://github.com/nodejs/ecmascript-modules/pull/6
Refs: https://github.com/nodejs/ecmascript-modules/pull/12
Refs: https://github.com/nodejs/ecmascript-modules/pull/28
Refs: https://github.com/nodejs/modules/issues/255
Refs: https://github.com/whatwg/html/issues/4315
Refs: https://github.com/w3c/webcomponents/issues/770
Co-authored-by: Myles Borins <MylesBorins@google.com>
Co-authored-by: John-David Dalton <john.david.dalton@gmail.com>
Co-authored-by: Evan Plaice <evanplaice@gmail.com>
Co-authored-by: Geoffrey Booth <webmaster@geoffreybooth.com>
Co-authored-by: Michaël Zasso <targos@protonmail.com>
PR-URL: https://github.com/nodejs/node/pull/26745
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Ben Coe <bencoe@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/21573
Fixes: https://github.com/nodejs/node/issues/17396
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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PR-URL: https://github.com/nodejs/node/pull/26103
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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Registration initialization functions are expected to have a 4th
argument, a void*, so add them where necessary to fix the warnings.
PR-URL: https://github.com/nodejs/node/pull/24737
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/22381
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
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This patch:
- Refactors the `MemoryRetainer` API so that the impementer no longer
calls `TrackThis()` that sets the size of node on the top of the
stack, which may be hard to understand. Instead now they implements
`SelfSize()` to provide their self sizes. Also documents
the API in the header.
- Refactors `MemoryTracker` so it calls `MemoryInfoName()` and
`SelfSize()` of `MemoryRetainer` to retrieve info about them, and
separate `node_names` and `edge_names` so the edges can be properly
named with reference names and the nodes can be named with class
names. (Previously the nodes are named with reference names while the
edges are all indexed and appear as array elements).
- Adds `SET_MEMORY_INFO_NAME()`, `SET_SELF_SIZE()` and
`SET_NO_MEMORY_INFO()` convenience macros
- Fixes a few `MemoryInfo` calls in some `MemoryRetainers` to track
their references properly.
- Refactors the heapdump tests to check both node names and edge names,
distinguishing between wrapped JS nodes (without prefixes)
and embedder wrappers (prefixed with `Node / `).
PR-URL: https://github.com/nodejs/node/pull/23072
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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- Use camel case names for memory retainers inherited from AsyncWrap
instead of their provider names (which are all in upper case)
- Assign class names to wraps so that they appear in the heap snapshot
as nodes with class names as node names. Previously some nodes are
named with reference names, which are supposed to be edge names
instead.
PR-URL: https://github.com/nodejs/node/pull/21939
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
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This will enable more detailed heap snapshots based on
a newer V8 API.
This commit itself is not tied to that API and could
be backported.
PR-URL: https://github.com/nodejs/node/pull/21742
Reviewed-By: James M Snell <jasnell@gmail.com>
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Replace v8::Persistent with node::Persistent, a specialization that
resets the persistent handle on destruction. Prevents accidental
resource leaks when forgetting to call .Reset() manually.
I'm fairly confident this commit fixes a number of resource leaks that
have gone undiagnosed so far.
PR-URL: https://github.com/nodejs/node/pull/18656
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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This adds support for ensuring that the top-level main into Node is
supported loading when it has no extension for backwards-compat with
NodeJS bin workflows.
In addition package.json caching is implemented in the module lookup
process.
PR-URL: https://github.com/nodejs/node/pull/18728
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
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Implement the C++ callback that is required to configure the
`import.meta` object and add one property:
- url: absolute URL of the module
PR-URL: https://github.com/nodejs/node/pull/18368
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
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Adds vm.Module, which wraps around ModuleWrap to provide an interface
for developers to work with modules in a more reflective manner.
Co-authored-by: Timothy Gu <timothygu99@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/17560
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
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This is an initial implementation to support dynamic import in
both scripts and modules. It's off by default since support for
dynamic import is still flagged in V8. Without setting the V8 flag,
this code won't be executed.
This initial version does not support importing into vm contexts.
PR-URL: https://github.com/nodejs/node/pull/15713
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
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This commit renames base-object to base_object for consitency with other
c++ source files.
PR-URL: https://github.com/nodejs/node/pull/17022
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
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Various improvements on readability, performance and
conformity to the Node core coding style in the ESM loader C++ code:
- `isolate` for the `Isolate*`, `context` for the `Local<Context>`
- Less reliance on `auto` where it’s unnecessary/increases cognitive
overhead
- Shorter paths to failure via `.ToLocal()` & co
- Do not keep pending exceptions around e.g. for failed `JSON` parsing
- Use `Maybe` types to get explicit error status forwarding
- Remove an unnecessary handle scope
- Add `nullptr` checks for unwrapped host objects
- Remove unused code
- Use `CamelCase` for function names
- Use `const Foo&` instead of copying values whenever possible
- Pass along the `Environment*` explicitly
PR-URL: https://github.com/nodejs/node/pull/16536
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
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PR-URL: https://github.com/nodejs/node/pull/16548
Fixes: https://github.com/nodejs/node/issues/16519
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/16261
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
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Fixes warnings by Coverity Scan of inefficiences when passing by value
instead of passing by const reference.
PR-URL: https://github.com/nodejs/node/pull/15615
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
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- Move `module_map` to `Environment` instead of having it be global
state
- `std::map` → `std::unordered_map`
- Remove one level of indirection for the map values
- Clean up empty vectors in `module_map`
- Call `Reset()` on all persistent handles in `resolve_cache_`
- Add a missing `HandleScope` to `ModuleWrap::~ModuleWrap()`
PR-URL: https://github.com/nodejs/node/pull/15515
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
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This follows the EPS an allows the node CLI to have ESM as an entry point.
`node ./example.mjs`. A newer V8 is needed for `import()` so that is not
included. `import.meta` is still in specification stage so that also is not
included.
PR-URL: https://github.com/nodejs/node/pull/14369
Author: Bradley Farias <bradley.meck@gmail.com>
Author: Guy Bedford <guybedford@gmail.com>
Author: Jan Krems <jan.krems@groupon.com>
Author: Timothy Gu <timothygu99@gmail.com>
Author: Michaël Zasso <targos@protonmail.com>
Author: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
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