Live snapshots part 3: reset isolate level c++ handles - #7138
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dbezhetskov wants to merge 2 commits into
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Live snapshots part 3: reset isolate level c++ handles #7138dbezhetskov wants to merge 2 commits into
dbezhetskov wants to merge 2 commits into
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Build a throwaway “zygote” Worker from the same source and bindings,
solely to evaluate top-level code and produce a snapshot artifact.
The SnapshotArtifact encapsulates all the data required to construct
a new isolate from a V8 startup snapshot.
Add a SnapshotConfig parameter to WorkerdApi controlling how the
isolate is created:
- kj::none: a regular isolate, no snapshots involved
- MutableSnapshot: the isolate is created via v8::SnapshotCreator
and fills the snapshot artifact
- ReadonlySharedSnapshot: the isolate boots from a previously
produced snapshot blob
To create snapshot we need to reset all C++ handles first. Here we reset IsolateBase level handles.
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To produce the V8 snapshot blob we need to reset all live handles before serialization.
Here we reset isolate level handles.
depends on: #6908