refs #276 using async dbus calls to improve responsiveness of the xplane sim driver

src/plugins/simulator/xplane/simulator_xplane.cpp

@@ -6,6 +6,7 @@
 #include "simulator_xplane.h"
 #include "xbus_service_proxy.h"
 #include <QDBusServiceWatcher>
+#include <QTimer>
 
 namespace BlackSimPlugin
 {
@@ -19,6 +20,45 @@ namespace BlackSimPlugin
             m_watcher->addWatchedService(CXBusServiceProxy::InterfaceName());
             connect(m_watcher, &QDBusServiceWatcher::serviceRegistered, this, &CSimulatorXPlane::serviceRegistered);
             connect(m_watcher, &QDBusServiceWatcher::serviceUnregistered, this, &CSimulatorXPlane::serviceUnregistered);
+
+            m_fastTimer = new QTimer(this);
+            m_slowTimer = new QTimer(this);
+            connect(m_fastTimer, &QTimer::timeout, this, &CSimulatorXPlane::fastTimerTimeout);
+            connect(m_slowTimer, &QTimer::timeout, this, &CSimulatorXPlane::slowTimerTimeout);
+            m_fastTimer->start(100);
+            m_slowTimer->start(1000);
+
+            resetData();
+        }
+
+        void CSimulatorXPlane::fastTimerTimeout()
+        {
+            if (isConnected())
+            {
+                m_service->getLatitudeAsync(&m_xplaneData.latitude);
+                m_service->getLongitudeAsync(&m_xplaneData.longitude);
+                m_service->getAltitudeMSLAsync(&m_xplaneData.altitude);
+                m_service->getGroundSpeedAsync(&m_xplaneData.groundspeed);
+                m_service->getPitchAsync(&m_xplaneData.pitch);
+                m_service->getRollAsync(&m_xplaneData.roll);
+                m_service->getTrueHeadingAsync(&m_xplaneData.trueHeading);
+                m_service->getCom1ActiveAsync(&m_xplaneData.com1Active);
+                m_service->getCom1StandbyAsync(&m_xplaneData.com1Standby);
+                m_service->getCom2ActiveAsync(&m_xplaneData.com2Active);
+                m_service->getCom2StandbyAsync(&m_xplaneData.com2Standby);
+                m_service->getTransponderCodeAsync(&m_xplaneData.xpdrCode);
+                m_service->getTransponderModeAsync(&m_xplaneData.xpdrMode);
+                m_service->getTransponderIdentAsync(&m_xplaneData.xpdrIdent);
+            }
+        }
+
+        void CSimulatorXPlane::slowTimerTimeout()
+        {
+            if (isConnected())
+            {
+                m_service->getAircraftModelPathAsync(&m_xplaneData.aircraftModelPath);
+                m_service->getAircraftIcaoCodeAsync(&m_xplaneData.aircraftIcaoCode);
+            }
         }
 
         bool CSimulatorXPlane::isConnected() const
@@ -101,53 +141,61 @@ namespace BlackSimPlugin
 
         BlackMisc::Aviation::CAircraft CSimulatorXPlane::getOwnAircraft() const
         {
-            if (! m_service) { return {}; }
+            if (! isConnected()) { return {}; }
             using namespace BlackMisc;
             using namespace BlackMisc::PhysicalQuantities;
             Aviation::CAircraftSituation situation;
-            situation.setPosition({ m_service->getLatitude(), m_service->getLongitude(), 0 });
+            situation.setPosition({ m_xplaneData.latitude, m_xplaneData.longitude, 0 });
-            situation.setAltitude({ m_service->getAltitudeMSL(), Aviation::CAltitude::MeanSeaLevel, CLengthUnit::m() });
+            situation.setAltitude({ m_xplaneData.altitude, Aviation::CAltitude::MeanSeaLevel, CLengthUnit::m() });
-            situation.setHeading({ m_service->getTrueHeading(), Aviation::CHeading::True, CAngleUnit::deg() });
+            situation.setHeading({ m_xplaneData.trueHeading, Aviation::CHeading::True, CAngleUnit::deg() });
-            situation.setPitch({ m_service->getPitch(), CAngleUnit::deg() });
+            situation.setPitch({ m_xplaneData.pitch, CAngleUnit::deg() });
-            situation.setBank({ m_service->getRoll(), CAngleUnit::deg() });
+            situation.setBank({ m_xplaneData.roll, CAngleUnit::deg() });
-            situation.setGroundspeed({ m_service->getGroundSpeed(), CSpeedUnit::m_s() });
+            situation.setGroundspeed({ m_xplaneData.groundspeed, CSpeedUnit::m_s() });
             Aviation::CAircraft ac { {}, {}, situation };
-            ac.setIcaoInfo(Aviation::CAircraftIcao { m_service->getAircraftIcaoCode() });
+            ac.setIcaoInfo(Aviation::CAircraftIcao { m_xplaneData.aircraftIcaoCode });
-            ac.setCom1System(Aviation::CComSystem::getCom1System({ m_service->getCom1Active(), CFrequencyUnit::kHz() }, { m_service->getCom1Standby(), CFrequencyUnit::kHz() }));
+            ac.setCom1System(Aviation::CComSystem::getCom1System({ m_xplaneData.com1Active, CFrequencyUnit::kHz() }, { m_xplaneData.com1Standby, CFrequencyUnit::kHz() }));
-            ac.setCom2System(Aviation::CComSystem::getCom2System({ m_service->getCom2Active(), CFrequencyUnit::kHz() }, { m_service->getCom2Standby(), CFrequencyUnit::kHz() }));
+            ac.setCom2System(Aviation::CComSystem::getCom2System({ m_xplaneData.com2Active, CFrequencyUnit::kHz() }, { m_xplaneData.com2Standby, CFrequencyUnit::kHz() }));
-            ac.setTransponder(Aviation::CTransponder::getStandardTransponder(m_service->getTransponderCode(), xpdrMode(m_service->getTransponderMode(), m_service->getTransponderIdent())));
+            ac.setTransponder(Aviation::CTransponder::getStandardTransponder(m_xplaneData.xpdrCode, xpdrMode(m_xplaneData.xpdrMode, m_xplaneData.xpdrIdent)));
             return ac;
         }
 
         void CSimulatorXPlane::displayStatusMessage(const BlackMisc::CStatusMessage &message) const
         {
-            if (! m_service) { return; }
+            if (! isConnected()) { return; }
             // TODO
             Q_UNUSED(message);
         }
 
         BlackMisc::Network::CAircraftModel CSimulatorXPlane::getAircraftModel() const
         {
-            if (! m_service) { return {}; }
+            if (! isConnected()) { return {}; }
-            return m_service->getAircraftModelPath();
+            return m_xplaneData.aircraftModelPath;
         }
 
         bool CSimulatorXPlane::updateOwnSimulatorCockpit(const BlackMisc::Aviation::CAircraft &aircraft)
         {
-            if (! m_service) { return false; }
+            if (! isConnected()) { return false; }
             using namespace BlackMisc;
             using namespace BlackMisc::PhysicalQuantities;
-            auto com1 = Aviation::CComSystem::getCom1System({ m_service->getCom1Active(), CFrequencyUnit::kHz() }, { m_service->getCom1Standby(), CFrequencyUnit::kHz() });
+            auto com1 = Aviation::CComSystem::getCom1System({ m_xplaneData.com1Active, CFrequencyUnit::kHz() }, { m_xplaneData.com1Standby, CFrequencyUnit::kHz() });
-            auto com2 = Aviation::CComSystem::getCom2System({ m_service->getCom2Active(), CFrequencyUnit::kHz() }, { m_service->getCom2Standby(), CFrequencyUnit::kHz() });
+            auto com2 = Aviation::CComSystem::getCom2System({ m_xplaneData.com2Active, CFrequencyUnit::kHz() }, { m_xplaneData.com2Standby, CFrequencyUnit::kHz() });
-            auto xpdr = Aviation::CTransponder::getStandardTransponder(m_service->getTransponderCode(), xpdrMode(m_service->getTransponderMode(), m_service->getTransponderIdent()));
+            auto xpdr = Aviation::CTransponder::getStandardTransponder(m_xplaneData.xpdrCode, xpdrMode(m_xplaneData.xpdrMode, m_xplaneData.xpdrIdent));
             if (aircraft.hasChangedCockpitData(com1, com2, xpdr))
             {
-                m_service->setCom1Active(aircraft.getCom1System().getFrequencyActive().valueRounded(CFrequencyUnit::kHz(), 0));
+                m_xplaneData.com1Active = aircraft.getCom1System().getFrequencyActive().valueRounded(CFrequencyUnit::kHz(), 0);
-                m_service->setCom1Standby(aircraft.getCom1System().getFrequencyStandby().valueRounded(CFrequencyUnit::kHz(), 0));
+                m_xplaneData.com1Standby = aircraft.getCom1System().getFrequencyStandby().valueRounded(CFrequencyUnit::kHz(), 0);
-                m_service->setCom2Active(aircraft.getCom2System().getFrequencyActive().valueRounded(CFrequencyUnit::kHz(), 0));
+                m_xplaneData.com2Active = aircraft.getCom2System().getFrequencyActive().valueRounded(CFrequencyUnit::kHz(), 0);
-                m_service->setCom2Standby(aircraft.getCom2System().getFrequencyStandby().valueRounded(CFrequencyUnit::kHz(), 0));
+                m_xplaneData.com2Standby = aircraft.getCom2System().getFrequencyStandby().valueRounded(CFrequencyUnit::kHz(), 0);
-                m_service->setTransponderCode(aircraft.getTransponderCode());
+                m_xplaneData.xpdrCode = aircraft.getTransponderCode();
-                m_service->setTransponderMode(xpdrMode(aircraft.getTransponderMode()));
+                m_xplaneData.xpdrMode = xpdrMode(aircraft.getTransponderMode());
+                m_service->setCom1Active(m_xplaneData.com1Active);
+                m_service->setCom1Standby(m_xplaneData.com1Standby);
+                m_service->setCom2Active(m_xplaneData.com2Active);
+                m_service->setCom2Standby(m_xplaneData.com2Standby);
+                m_service->setTransponderCode(m_xplaneData.xpdrCode);
+                m_service->setTransponderMode(m_xplaneData.xpdrMode);
+
+                m_service->cancelAllPendingAsyncCalls(); // in case there is already a reply with some old data incoming
                 return true;
             }
             return false;

src/plugins/simulator/xplane/simulator_xplane.h

@@ -37,15 +37,6 @@ namespace BlackSimPlugin
             //! \copydoc BlackCore::ISimulator::canConnect
             virtual bool canConnect() override;
 
-        private:
-            QDBusConnection m_conn { "default" };
-            QDBusServiceWatcher *m_watcher { nullptr };
-            CXBusServiceProxy *m_service { nullptr };
-
-        private slots:
-            void serviceRegistered();
-            void serviceUnregistered();
-
         public slots:
             //! \copydoc BlackCore::ISimulator::connectTo
             virtual bool connectTo() override;
@@ -81,6 +72,44 @@ namespace BlackSimPlugin
 
             //! \copydoc BlackCore::ISimulator::getAircraftModel
             virtual BlackMisc::Network::CAircraftModel getAircraftModel() const override;
+
+        private slots:
+            void serviceRegistered();
+            void serviceUnregistered();
+            void fastTimerTimeout();
+            void slowTimerTimeout();
+
+        private:
+            QDBusConnection m_conn { "default" };
+            QDBusServiceWatcher *m_watcher { nullptr };
+            CXBusServiceProxy *m_service { nullptr };
+            QTimer *m_fastTimer { nullptr };
+            QTimer *m_slowTimer { nullptr };
+
+            struct // data is written by DBus async method callbacks
+            {
+                QString aircraftModelPath;
+                QString aircraftIcaoCode;
+                double latitude;
+                double longitude;
+                double altitude;
+                double groundspeed;
+                double pitch;
+                double roll;
+                double trueHeading;
+                int com1Active;
+                int com1Standby;
+                int com2Active;
+                int com2Standby;
+                int xpdrCode;
+                int xpdrMode;
+                bool xpdrIdent;
+            } m_xplaneData;
+
+            void resetData()
+            {
+                m_xplaneData = { "", "", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, false };
+            }
         };
     
         //! Factory for creating CSimulatorXPlane instance

src/plugins/simulator/xplane/xbus_service_proxy.cpp

@@ -38,136 +38,244 @@ namespace BlackSimPlugin
         {
             return m_dbusInterface->callDBusRet<QString>(QLatin1String("getAircraftModelPath"));
         }
+        void CXBusServiceProxy::getAircraftModelPathAsync(QString *o_modelPath)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getAircraftModelPath"), setterCallback(o_modelPath));
+        }
 
         QString CXBusServiceProxy::getAircraftModelFilename() const
         {
             return m_dbusInterface->callDBusRet<QString>(QLatin1String("getAircraftModelFilename"));
         }
+        void CXBusServiceProxy::getAircraftModelFilenameAsync(QString *o_modelFilename)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getAircraftModelFilename"), setterCallback(o_modelFilename));
+        }
 
         QString CXBusServiceProxy::getAircraftModelLivery() const
         {
             return m_dbusInterface->callDBusRet<QString>(QLatin1String("getAircraftModelLivery"));
         }
+        void CXBusServiceProxy::getAircraftModelLiveryAsync(QString *o_modelLivery)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getAircraftModelLivery"), setterCallback(o_modelLivery));
+        }
 
         QString CXBusServiceProxy::getAircraftIcaoCode() const
         {
             return m_dbusInterface->callDBusRet<QString>(QLatin1String("getAircraftIcaoCode"));
         }
+        void CXBusServiceProxy::getAircraftIcaoCodeAsync(QString *o_icaoCode)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getAircraftIcaoCode"), setterCallback(o_icaoCode));
+        }
 
         int CXBusServiceProxy::getXPlaneVersionMajor() const
         {
             return m_dbusInterface->callDBusRet<int>(QLatin1String("getXPlaneVersionMajor"));
         }
+        void CXBusServiceProxy::getXPlaneVersionMajorAsync(int *o_versionMajor)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getXPlaneVersionMajor"), setterCallback(o_versionMajor));
+        }
 
         int CXBusServiceProxy::getXPlaneVersionMinor() const
         {
             return m_dbusInterface->callDBusRet<int>(QLatin1String("getXPlaneVersionMinor"));
         }
+        void CXBusServiceProxy::getXPlaneVersionMinorAsync(int *o_versionMinor)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getXPlaneVersionMinor"), setterCallback(o_versionMinor));
+        }
 
         QString CXBusServiceProxy::getXPlaneInstallationPath() const
         {
             return m_dbusInterface->callDBusRet<QString>(QLatin1String("getXPlaneInstallationPath"));
         }
+        void CXBusServiceProxy::getXPlaneInstallationPathAsync(QString *o_installPath)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getXPlaneInstallationPath"), setterCallback(o_installPath));
+        }
 
         QString CXBusServiceProxy::getXPlanePreferencesPath() const
         {
             return m_dbusInterface->callDBusRet<QString>(QLatin1String("getXPlanePreferencesPath"));
         }
+        void CXBusServiceProxy::getXPlanePreferencesPathAsync(QString *o_prefsPath)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getXPlanePreferencesPath"), setterCallback(o_prefsPath));
+        }
 
         double CXBusServiceProxy::getLatitude() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getLatitude"));
         }
+        void CXBusServiceProxy::getLatitudeAsync(double *o_latitude)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getLatitude"), setterCallback(o_latitude));
+        }
 
         double CXBusServiceProxy::getLongitude() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getLongitude"));
         }
+        void CXBusServiceProxy::getLongitudeAsync(double *o_longitude)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getLongitude"), setterCallback(o_longitude));
+        }
 
         double CXBusServiceProxy::getAltitudeMSL() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getAltitudeMSL"));
         }
+        void CXBusServiceProxy::getAltitudeMSLAsync(double *o_altitude)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getAltitudeMSL"), setterCallback(o_altitude));
+        }
 
         double CXBusServiceProxy::getHeightAGL() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getHeightAGL"));
         }
+        void CXBusServiceProxy::getHeightAGLAsync(double *o_height)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getHeightAGL"), setterCallback(o_height));
+        }
 
         double CXBusServiceProxy::getGroundSpeed() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getGroundSpeed"));
         }
+        void CXBusServiceProxy::getGroundSpeedAsync(double *o_groundspeed)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getGroundSpeed"), setterCallback(o_groundspeed));
+        }
 
         double CXBusServiceProxy::getIndicatedAirspeed() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getIndicatedAirspeed"));
         }
+        void CXBusServiceProxy::getIndicatedAirspeedAsync(double *o_ias)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getIndicatedAirspeed"), setterCallback(o_ias));
+        }
 
         double CXBusServiceProxy::getTrueAirspeed() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getTrueAirspeed"));
         }
+        void CXBusServiceProxy::getTrueAirspeedAsync(double *o_tas)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getTrueAirspeed"), setterCallback(o_tas));
+        }
 
         double CXBusServiceProxy::getPitch() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getPitch"));
         }
+        void CXBusServiceProxy::getPitchAsync(double *o_pitch)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getPitch"), setterCallback(o_pitch));
+        }
 
         double CXBusServiceProxy::getRoll() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getRoll"));
         }
+        void CXBusServiceProxy::getRollAsync(double *o_roll)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getRoll"), setterCallback(o_roll));
+        }
 
         double CXBusServiceProxy::getTrueHeading() const
         {
             return m_dbusInterface->callDBusRet<double>(QLatin1String("getTrueHeading"));
         }
+        void CXBusServiceProxy::getTrueHeadingAsync(double *o_heading)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getTrueHeading"), setterCallback(o_heading));
+        }
 
         bool CXBusServiceProxy::getAnyWheelOnGround() const
         {
             return m_dbusInterface->callDBusRet<bool>(QLatin1String("getAnyWheelOnGround"));
         }
+        void CXBusServiceProxy::getAnyWheelOnGroundAsync(bool *o_anyWheel)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getAnyWheelOnGround"), setterCallback(o_anyWheel));
+        }
 
         bool CXBusServiceProxy::getAllWheelsOnGround() const
         {
             return m_dbusInterface->callDBusRet<bool>(QLatin1String("getAllWheelsOnGround"));
         }
+        void CXBusServiceProxy::getAllWheelsOnGroundAsync(bool *o_allWheels)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getAllWheelsOnGround"), setterCallback(o_allWheels));
+        }
 
         int CXBusServiceProxy::getCom1Active() const
         {
             return m_dbusInterface->callDBusRet<int>(QLatin1String("getCom1Active"));
         }
+        void CXBusServiceProxy::getCom1ActiveAsync(int *o_com1Active)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getCom1Active"), setterCallback(o_com1Active));
+        }
 
         int CXBusServiceProxy::getCom1Standby() const
         {
             return m_dbusInterface->callDBusRet<int>(QLatin1String("getCom1Standby"));
         }
+        void CXBusServiceProxy::getCom1StandbyAsync(int *o_com1Standby)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getCom1Standby"), setterCallback(o_com1Standby));
+        }
 
         int CXBusServiceProxy::getCom2Active() const
         {
             return m_dbusInterface->callDBusRet<int>(QLatin1String("getCom2Active"));
         }
+        void CXBusServiceProxy::getCom2ActiveAsync(int *o_com2Active)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getCom2Active"), setterCallback(o_com2Active));
+        }
 
         int CXBusServiceProxy::getCom2Standby() const
         {
             return m_dbusInterface->callDBusRet<int>(QLatin1String("getCom2Standby"));
         }
+        void CXBusServiceProxy::getCom2StandbyAsync(int *o_com2Standby)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getCom2Standby"), setterCallback(o_com2Standby));
+        }
 
         int CXBusServiceProxy::getTransponderCode() const
         {
             return m_dbusInterface->callDBusRet<int>(QLatin1String("getTransponderCode"));
         }
+        void CXBusServiceProxy::getTransponderCodeAsync(int *o_xpdrCode)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getTransponderCode"), setterCallback(o_xpdrCode));
+        }
 
         int CXBusServiceProxy::getTransponderMode() const
         {
             return m_dbusInterface->callDBusRet<int>(QLatin1String("getTransponderMode"));
         }
+        void CXBusServiceProxy::getTransponderModeAsync(int *o_xpdrMode)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getTransponderMode"), setterCallback(o_xpdrMode));
+        }
 
         bool CXBusServiceProxy::getTransponderIdent() const
         {
             return m_dbusInterface->callDBusRet<bool>(QLatin1String("getTransponderIdent"));
         }
+        void CXBusServiceProxy::getTransponderIdentAsync(bool *o_ident)
+        {
+            m_dbusInterface->callDBusAsync(QLatin1String("getTransponderIdent"), setterCallback(o_ident));
+        }
 
         void CXBusServiceProxy::setCom1Active(int freq)
         {

src/plugins/simulator/xplane/xbus_service_proxy.h

@@ -9,6 +9,7 @@
 //! \file
 
 #include "blackmisc/genericdbusinterface.h"
+#include <functional>
 
 //! \cond PRIVATE
 #define XBUS_SERVICE_INTERFACENAME "net.vatsim.xbus.service"
@@ -48,96 +49,195 @@ namespace BlackSimPlugin
             //! Does the remote object exist?
             bool isValid() const { return m_dbusInterface->isValid(); }
 
+            //! Cancel all current async slot calls
+            void cancelAllPendingAsyncCalls() { m_dbusInterface->cancelAllPendingAsyncCalls(); }
+
         private:
             BlackMisc::CGenericDBusInterface *m_dbusInterface = nullptr;
 
             void relaySignals();
 
+            // Returns a function object which can be passed to CGenericDBusInterface::callDBusAsync.
+            template <typename T>
+            std::function<void(QDBusPendingCallWatcher *)> setterCallback(T *obj)
+            {
+                return [this, obj] (QDBusPendingCallWatcher *watcher)
+                {
+                    QDBusPendingReply<T> reply = *watcher;
+                    if (reply.isError()) { emit asyncMethodError(reply.error()); }
+                    else { *obj = reply; }
+                };
+            }
+
         signals:
+            //! Emitted if an asynchronous method call caused a DBus error
+            void asyncMethodError(QDBusError error);
+
             //! \copydoc XBus::CService::aircraftModelChanged
             void aircraftModelChanged(const QString &path, const QString &filename, const QString &livery, const QString &icao);
 
         public slots:
             //! \copydoc XBus::CService::getAircraftModelPath
+            //! @{
             QString getAircraftModelPath() const;
+            void getAircraftModelPathAsync(QString *o_modelPath);
+            //! @}
 
             //! \copydoc XBus::CService::getAircraftModelFilename
+            //! @{
             QString getAircraftModelFilename() const;
+            void getAircraftModelFilenameAsync(QString *o_modelFilename);
+            //! @}
 
             //! \copydoc XBus::CService::getAircraftModelLivery
+            //! @{
             QString getAircraftModelLivery() const;
+            void getAircraftModelLiveryAsync(QString *o_modelLivery);
+            //! @}
 
             //! \copydoc XBus::CService::getAircraftIcaoCode
+            //! @{
             QString getAircraftIcaoCode() const;
+            void getAircraftIcaoCodeAsync(QString *o_icaoCode);
+            //! @}
 
             //! \copydoc XBus::CService::getXPlaneVersionMajor
+            //! @{
             int getXPlaneVersionMajor() const;
+            void getXPlaneVersionMajorAsync(int *o_versionMajor);
+            //! @}
 
             //! \copydoc XBus::CService::getXPlaneVersionMinor
+            //! @{
             int getXPlaneVersionMinor() const;
+            void getXPlaneVersionMinorAsync(int *o_versionMinor);
+            //! @}
 
             //! \copydoc XBus::CService::getXPlaneInstallationPath
+            //! @{
             QString getXPlaneInstallationPath() const;
+            void getXPlaneInstallationPathAsync(QString *o_installPath);
+            //! @}
 
             //! \copydoc XBus::CService::getXPlanePreferencesPath
+            //! @{
             QString getXPlanePreferencesPath() const;
+            void getXPlanePreferencesPathAsync(QString *o_prefsPath);
+            //! @}
 
             //! \copydoc XBus::CService::getLatitude
+            //! @{
             double getLatitude() const;
+            void getLatitudeAsync(double *o_latitude);
+            //! @}
 
             //! \copydoc XBus::CService::getLongitude
+            //! @{
             double getLongitude() const;
+            void getLongitudeAsync(double *o_longitude);
+            //! @}
 
             //! \copydoc XBus::CService::getAltitudeMSL
+            //! @{
             double getAltitudeMSL() const;
+            void getAltitudeMSLAsync(double *o_altitude);
+            //! @}
 
             //! \copydoc XBus::CService::getHeightAGL
+            //! @{
             double getHeightAGL() const;
+            void getHeightAGLAsync(double *o_height);
+            //! @}
 
             //! \copydoc XBus::CService::getGroundSpeed
+            //! @{
             double getGroundSpeed() const;
+            void getGroundSpeedAsync(double *o_groundspeed);
+            //! @}
 
             //! \copydoc XBus::CService::getIndicatedAirspeed
+            //! @{
             double getIndicatedAirspeed() const;
+            void getIndicatedAirspeedAsync(double *o_ias);
+            //! @}
 
             //! \copydoc XBus::CService::getTrueAirspeed
+            //! @{
             double getTrueAirspeed() const;
+            void getTrueAirspeedAsync(double *o_tas);
+            //! @}
 
             //! \copydoc XBus::CService::getPitch
+            //! @{
             double getPitch() const;
+            void getPitchAsync(double *o_pitch);
+            //! @}
 
             //! \copydoc XBus::CService::getRoll
+            //! @{
             double getRoll() const;
+            void getRollAsync(double *o_roll);
+            //! @}
 
             //! \copydoc XBus::CService::getTrueHeading
+            //! @{
             double getTrueHeading() const;
+            void getTrueHeadingAsync(double *o_heading);
+            //! @}
 
             //! Get whether any wheel is on the ground
+            //! @{
             bool getAnyWheelOnGround() const;
+            void getAnyWheelOnGroundAsync(bool *o_anyWheel);
+            //! @}
 
             //! Get whether all wheels are on the ground
+            //! @{
             bool getAllWheelsOnGround() const;
+            void getAllWheelsOnGroundAsync(bool *o_allWheels);
+            //! @}
 
             //! \copydoc XBus::CService::getCom1Active
+            //! @{
             int getCom1Active() const;
+            void getCom1ActiveAsync(int *o_com1Active);
+            //! @}
 
             //! \copydoc XBus::CService::getCom1Standby
+            //! @{
             int getCom1Standby() const;
+            void getCom1StandbyAsync(int *o_com1Standby);
+            //! @}
 
             //! \copydoc XBus::CService::getCom2Active
+            //! @{
             int getCom2Active() const;
+            void getCom2ActiveAsync(int *o_com2Active);
+            //! @}
 
             //! \copydoc XBus::CService::getCom2Standby
+            //! @{
             int getCom2Standby() const;
+            void getCom2StandbyAsync(int *o_com2Standby);
+            //! @}
 
             //! \copydoc XBus::CService::getTransponderCode
+            //! @{
             int getTransponderCode() const;
+            void getTransponderCodeAsync(int *o_xpdrCode);
+            //! @}
 
             //! \copydoc XBus::CService::getTransponderMode
+            //! @{
             int getTransponderMode() const;
+            void getTransponderModeAsync(int *o_xpdrMode);
+            //! @}
 
             //! \copydoc XBus::CService::getTransponderIdent
+            //! @{
             bool getTransponderIdent() const;
+            void getTransponderIdentAsync(bool *o_ident);
+            //! @}
 
             //! \copydoc XBus::CService::setCom1Active
             void setCom1Active(int freq);