Method _void_process

src/common/WorkQueue.h:155–167

      return ((void*)1); // Not used
    }
    void _void_process(void *, TPHandle &handle) override {
      _lock.lock();
      ceph_assert(!to_process.empty());
      U u = to_process.front();
      to_process.pop_front();
      _lock.unlock();

      _process(u, handle);

      _lock.lock();
      to_finish.push_back(u);
      _lock.unlock();
    }

    void _void_process_finish(void *) override {
      _lock.lock();