std::vector< boost::shared_ptr<view::Signal> > _signals;
boost::shared_ptr<LogicData> _logic_data;
boost::shared_ptr<LogicDataSnapshot> _cur_logic_snapshot;
std::vector< boost::shared_ptr<view::Signal> > _signals;
boost::shared_ptr<LogicData> _logic_data;
boost::shared_ptr<LogicDataSnapshot> _cur_logic_snapshot;