script_bindings

Module weakref

Source
Expand description

Weak-referenceable JS-managed DOM objects.

IDL interfaces marked as weakReferenceable in Bindings.conf automatically implement the WeakReferenceable trait in codegen. The instance object is responsible for setting None in its own own WeakBox when it is collected, through the DOM_WEAK_SLOT slot. When all associated WeakRef values are dropped, the WeakBox itself is dropped too.

Structs§

  • WeakBox
    The inner box of weak references, public for the finalization in codegen.
  • WeakRef
    A weak reference to a JS-managed DOM object.

Constants§

  • DOM_WEAK_SLOT
    The index of the slot wherein a pointer to the weak holder cell is stored for weak-referenceable bindings. We use slot 1 for holding it, this is unsafe for globals, we disallow weak-referenceable globals directly in codegen.

Traits§