delta/node-new.git/src/node_external_reference.h, branch main

src: register external references for source code

2023-05-10T11:17:59+00:00

Currently we use external strings for internalized builtin source code.
However when a snapshot is taken, any external string whose resource
is not registered is flattened into a SeqString (see ref). The
result is that module source code stored in the snapshot does not
use external strings after deserialization. This patch registers an
external string resource for each internalized builtin's source. The
savings are substantial: ~1.9 MB of heap memory per isolate, or ~44%
of an otherwise empty isolate's heap usage:

```console
$ node --expose-gc -p 'gc(),process.memoryUsage().heapUsed'
4190968
$ ./node --expose-gc -p 'gc(),process.memoryUsage().heapUsed'
2327536
```

The savings can be even higher for user snapshots which may include
more internal modules.

The existing UnionBytes implementation was ill-suited, because it only
created an external string resource when ToStringChecked was called,
but we need to register the external string resources before the
isolate even exists. We change UnionBytes to no longer own the data,
and shift ownership of the data to a new external resource class
called StaticExternalByteResource.  StaticExternalByteResource are
either statically allocated (for internalized builtin code) or owned
by the static `externalized_builtin_sources` map, so they will only be
destructed when static resources are destructed. We change JS2C to emit
statements to register a string resource for each internalized builtin.

Refs: https://github.com/v8/v8/blob/d2c8fbe9ccd1a6ce5591bb7dd319c3c00d6bf489/src/snapshot/serializer.cc#L633
PR-URL: https://github.com/nodejs/node/pull/47055
Reviewed-By: Joyee Cheung 
Reviewed-By: Chengzhong Wu

src: add v8 fast api for url canParse

2023-04-20T16:16:21+00:00

PR-URL: https://github.com/nodejs/node/pull/47552
Reviewed-By: Yagiz Nizipli 
Reviewed-By: Mohammed Keyvanzadeh

src: move encoding bindings to a new binding

2023-03-07T21:45:42+00:00

Move the bindings used by TextEncoder to a new binding for
more self-contained code.

PR-URL: https://github.com/nodejs/node/pull/46658
Reviewed-By: Darshan Sen

timers: use V8 fast API calls

2023-02-28T09:37:24+00:00

PR-URL: https://github.com/nodejs/node/pull/46579
Reviewed-By: James M Snell 
Reviewed-By: Yagiz Nizipli 
Reviewed-By: Robert Nagy 
Reviewed-By: Matteo Collina 
Reviewed-By: Darshan Sen 
Reviewed-By: Colin Ihrig 
Reviewed-By: Tobias Nießen 
Reviewed-By: Benjamin Gruenbaum

buffer: use v8 fast API calls for `Buffer.byteLength` implementation

2023-02-26T18:02:45+00:00

Use v8 fast API calls for Buffer.byteLength with sequential one-byte
strings.

PR-URL: https://github.com/nodejs/node/pull/46616
Reviewed-By: Anna Henningsen 
Reviewed-By: Robert Nagy 
Reviewed-By: Yagiz Nizipli 
Reviewed-By: James M Snell

src,process: add permission model

2023-02-23T18:11:51+00:00

Signed-off-by: RafaelGSS 
PR-URL: https://github.com/nodejs/node/pull/44004
Reviewed-By: Gireesh Punathil 
Reviewed-By: Matteo Collina 
Reviewed-By: Michaël Zasso 
Reviewed-By: James M Snell 
Reviewed-By: Paolo Insogna 
Reviewed-By: Colin Ihrig

src: add initial support for single executable applications

2023-02-18T02:49:18+00:00

Compile a JavaScript file into a single executable application:

```console
$ echo 'console.log(`Hello, ${process.argv[2]}!`);' > hello.js

$ cp $(command -v node) hello

$ npx postject hello NODE_JS_CODE hello.js \
    --sentinel-fuse NODE_JS_FUSE_fce680ab2cc467b6e072b8b5df1996b2

$ npx postject hello NODE_JS_CODE hello.js \
    --sentinel-fuse NODE_JS_FUSE_fce680ab2cc467b6e072b8b5df1996b2 \
    --macho-segment-name NODE_JS

$ ./hello world
Hello, world!
```

Signed-off-by: Darshan Sen 
PR-URL: https://github.com/nodejs/node/pull/45038
Reviewed-By: Anna Henningsen 
Reviewed-By: Michael Dawson 
Reviewed-By: Joyee Cheung 
Reviewed-By: Matteo Collina 
Reviewed-By: Colin Ihrig

bootstrap: support module_wrap binding in snapshot

2022-12-16T11:43:49+00:00

PR-URL: https://github.com/nodejs/node/pull/45849
Reviewed-By: Geoffrey Booth 
Reviewed-By: Chengzhong Wu

src: rename internal module declaration as internal bindings

2022-11-28T16:23:08+00:00

This is a continuation of the name reification on the internal bindings.

Renames NODE_MODULE_CONTEXT_AWARE_INTERNAL and
NODE_MODULE_EXTERNAL_REFERENCE to NODE_BINDING_CONTEXT_AWARE_INTERNAL
and NODE_BINDING_EXTERNAL_REFERENCE respectively.

PR-URL: https://github.com/nodejs/node/pull/45551
Refs: https://github.com/nodejs/node/issues/44036
Reviewed-By: Joyee Cheung 
Reviewed-By: Rafael Gonzaga 
Reviewed-By: Daeyeon Jeong 
Reviewed-By: Jacob Smith 
Reviewed-By: Yagiz Nizipli

dns: support dns module in the snapshot

2022-09-28T17:58:21+00:00

For the initial iteration, only the default resolver can be
serialized/deserialized. If `dns.setServers()` has been
called, we'll preserve the configured DNS servers in the snapshot.
We can consider exposing the serialization method if it becomes
necessary for user-land snapshots.

PR-URL: https://github.com/nodejs/node/pull/44633
Reviewed-By: Matteo Collina 
Reviewed-By: Antoine du Hamel