Make DeviceLostClosure.from_c mutate the closure before dropping it. #5032
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bradwerth
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cwfitzgerald
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Jan 11, 2024
nical
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This clarifies that the Rust and C-style callbacks/closures need to be consumed (not called) before they are dropped. It also makes the from_c function consume the param closure so that it can be dropped without panicking. It also relaxes the restriction that the callback/closure can only be called once.
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Description
Since
DeviceLostClosureCrequires that it be called before it is dropped, and we receive an existingDeviceLostClosureCstruct as param inDeviceLostClosure.from_c, we need to mark the param as called before it drops out of scope.Testing
Tested by embedders using
DeviceLostClosure.from_c.Checklist
cargo fmt.cargo clippy. If applicable, add:--target wasm32-unknown-unknown--target wasm32-unknown-emscriptencargo xtask testto run tests.CHANGELOG.md. See simple instructions inside file.