The module to iterate over living objects.
Sets the proc as the finalizer. When the object that
are going to be recycled, the finalizers are called with their ID's
Set the finalizer flag for the object. The finalizers are called when objects that the flag set are going to recycle.
Returns the list of the finalizers.
Iterates over all living objects which is instance of the class_or_module. Without an argument, it iterates over all existing objects.
Starts collecting objects which is no longer accessed from anywhere.
Removes the proc from the finalizers.