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sea: snapshot support in single executable applications #46824

Merged
merged 4 commits into from
Jul 20, 2023
Merged

sea: snapshot support in single executable applications #46824

merged 4 commits into from
Jul 20, 2023

Commits on Jul 20, 2023

  1. src: support snapshot in single executable applications 

    This patch adds snapshot support to single executable applications.
To build a snapshot from the main script when preparing the
blob that will be injected into the single executable application,
add `"useSnapshot": true` to the configuration passed to
`--experimental-sea-config`. For example:

```
{
    "main": "snapshot.js",
    "output": "sea-prep.blob",
    "useSnapshot": true
}
```

The main script used to build the snapshot must invoke
`v8.startupSnapshot.setDeserializeMainFunction()` to configure the
entry point. The generated startup snapshot would be part of the
preparation blob and get injected into the final executable.

When the single executable application is launched, instead of running
the `main` script from scratch, Node.js would instead deserialize the
snapshot to get to the state initialized during build-time directly.
    @joyeecheung
    joyeecheung committed Jul 20, 2023
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  2. fixup! src: support snapshot in single executable applications

    @joyeecheung
    joyeecheung committed Jul 20, 2023
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  3. fixup! fixup! src: support snapshot in single executable applications

    @joyeecheung
    joyeecheung committed Jul 20, 2023
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  4. fixup! fixup! fixup! src: support snapshot in single executable appli… 

    …cations
    @joyeecheung
    joyeecheung committed Jul 20, 2023
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