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Code Issues Packages 1 Wiki Activity

Allow starting isolate from snapshot bytes on the heap (#5187)

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Marcus Weiner 2020-05-10 03:00:40 +02:00 committed by GitHub
parent d8f5b37218
commit f6b617784f
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1 changed files with 16 additions and 0 deletions
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16
core/isolate.rs
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@ -125,6 +125,7 @@ impl From<Script<'_>> for OwnedScript {
pub enum Snapshot {
Static(&'static [u8]),
JustCreated(v8::StartupData),
Boxed(Box<[u8]>),
}
/// Represents data used to initialize isolate at startup
@ -250,6 +251,7 @@ impl CoreIsolate {
params = match snapshot {
Snapshot::Static(data) => params.snapshot_blob(data),
Snapshot::JustCreated(data) => params.snapshot_blob(data),
Snapshot::Boxed(data) => params.snapshot_blob(data),
};
true
} else {
@ -1175,6 +1177,20 @@ pub mod tests {
let mut isolate2 = CoreIsolate::new(startup_data, false);
js_check(isolate2.execute("check.js", "if (a != 3) throw Error('x')"));
}
#[test]
fn test_from_boxed_snapshot() {
let snapshot = {
let mut isolate = CoreIsolate::new(StartupData::None, true);
js_check(isolate.execute("a.js", "a = 1 + 2"));
let snap: &[u8] = &*isolate.snapshot();
Vec::from(snap).into_boxed_slice()
};
let startup_data = StartupData::Snapshot(Snapshot::Boxed(snapshot));
let mut isolate2 = CoreIsolate::new(startup_data, false);
js_check(isolate2.execute("check.js", "if (a != 3) throw Error('x')"));
}
}
// TODO(piscisaureus): rusty_v8 should implement the Error trait on