Method release

include/process/owned.hpp:177–193

template <typename T>
T* Owned<T>::release()
{
  if (data == nullptr) {
    // The ownership of this pointer has already been lost.
    return nullptr;
  }

  // Atomically set the pointer 'data->t' to `nullptr`.
  T* old = data->t.exchange(nullptr);
  if (old == nullptr) {
    // The ownership of this pointer has already been lost.
    return nullptr;
  }

  data.reset();
  return old;
}


template <typename T>