namespace factor { struct aging_policy { factor_vm *parent; aging_space *aging; tenured_space *tenured; explicit aging_policy(factor_vm *parent_) : parent(parent_), aging(parent->data->aging), tenured(parent->data->tenured) {} bool should_copy_p(object *untagged) { return !(aging->contains_p(untagged) || tenured->contains_p(untagged)); } void promoted_object(object *obj) {} void visited_object(object *obj) {} }; struct aging_collector : copying_collector { explicit aging_collector(factor_vm *parent_); }; }