template <typename T>
class lock_free_queue {
private:
  struct node {
    void release_ref()
    {
      node_counter old_counter = count.load(std::memory_order_relaxed);
      node_counter new_counter;
      do {
        new_counter = old_counter;
        --new_counter.internal_count;
      } while (!count.compare_exchange_strong(old_counter,
                                              new_counter,
                                              std::memory_order_acquire,
                                              std::memory_order_relaxed));
      if (!new_counter.internal_count && !new_counter.external_counters) {
        delete this;
      }
    }
  };
};