f="../../boost/log/sinks/asynchronous_sink.html" title="Class template asynchronous_sink">asynchronous_sink</a></code>
          class template. Like the synchronous one, asynchronous sink frontend provides
          a way of synchronizing access to the backend. All log records are passed
          to the backend in a dedicated thread, which makes it suitable for backends
          that may block for a considerable amount of time (network and other hardware
          device-related sinks, for example). The 