Type Alias JSObjectFinalizeCallback 

pub type JSObjectFinalizeCallback = Option<unsafe extern "C-unwind" fn(JSObjectRef)>;

Available on crate features JSBase and JSObjectRef only.

The callback invoked when an object is finalized (prepared for garbage collection). An object may be finalized on any thread.

Parameter object: The JSObject being finalized.

If you named your function Finalize, you would declare it like this:

void Finalize(JSObjectRef object);

The finalize callback is called on the most derived class first, and the least derived class (the parent class) last.

You must not call any function that may cause a garbage collection or an allocation of a garbage collected object from within a JSObjectFinalizeCallback. This includes all functions that have a JSContextRef parameter.

See also Apple’s documentation

Aliased Type

pub enum JSObjectFinalizeCallback {
    None,
    Some(unsafe extern "C-unwind" fn(*mut OpaqueJSValue)),
}

Variants

None

No value.

Some(unsafe extern "C-unwind" fn(*mut OpaqueJSValue))

Some value of type T.