Smart Pointers Reloaded (III): Construction

Listing 2: The resource_manager class in action.

template <class storage_policy, class ownership_policy>
class resource_manager
   : public optimally_inherit<storage_policy, ownership_policy>::type
{
   ...
   ~resource_manager() {
      if (!ownership_policy::release(get_impl(*this))) {
         storage_policy::release();
      }
   }
};
template <
   typename T,
   template <typename> class ownership_policy = ref_counted,
   template <typename> class conversion_policy = disallow_conversion,
   template <typename> class checking_policy = assert_check,
   template <typename> class storage_policy = scalar_storage>

class smart_ptr
   : public optimally_inherit<
     resource_manager<
        storage_policy<T>,
        ownership_policy<T>
     >,
     optimally_inherit<
        checking_policy<T>,
        conversion_policy<T>
     >
   >
{
 ...
};