{ // RCU Writer scope
PBD::Unwinder<bool> uw_flag (_route_deletion_in_progress, true);
RCUWriter<RouteList> writer (routes);
boost::shared_ptr<RouteList> rs = writer.get_copy ();
{ // RCU Writer scope
PBD::Unwinder<bool> uw_flag (_route_deletion_in_progress, true);
RCUWriter<RouteList> writer (routes);
boost::shared_ptr<RouteList> rs = writer.get_copy ();