SGSubsystem classes: Addition of staticSubsystemClassId() to all subsystems.

src/AIModel/submodel.hxx

@@ -104,6 +104,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "submodel-mgr"; }
+
     void load();
 
 private:

src/ATC/atc_mgr.hxx

@@ -57,6 +57,9 @@ public:
     void shutdown() override;
     void update(double time) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "ATC"; }
+
     void addController(FGATCController *controller);
     void removeController(FGATCController* controller);
 };

src/Aircraft/FlightHistory.hxx

@@ -63,6 +63,9 @@ public:
     void shutdown() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "history"; }
+
     PagedPathForHistory_ptr pagedPathForHistory(size_t max_entries, size_t newerThan = 0) const;
     /**
      * retrieve the path, collapsing segments shorter than

src/Autopilot/autopilot.cxx

@@ -54,6 +54,9 @@ public:
         inner = simgear::StateMachine::createFromPlist(&cfg, &props_root);
     }
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "state-machine"; }
+
     virtual bool configure( const std::string & nodeName, SGPropertyNode_ptr config) {
         return false;
     }

src/Autopilot/autopilot.hxx

@@ -45,6 +45,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "autopilot"; }
+
     void set_serviceable( bool value ) { _serviceable = value; }
     bool is_serviceable() const { return _serviceable; }
 

src/Autopilot/autopilotgroup.cxx

@@ -53,6 +53,9 @@ public:
     InitStatus incrementalInit() override;
     void reinit() override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "xml-autopilot-group"; }
+
     virtual void addAutopilot( const std::string& name,
                                SGPropertyNode_ptr apNode,
                                SGPropertyNode_ptr config );

src/Autopilot/autopilotgroup.hxx

@@ -31,6 +31,9 @@
 class FGXMLAutopilotGroup : public SGSubsystemGroup
 {
 public:
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "xml-rules"; }
+
     static FGXMLAutopilotGroup * createInstance(const std::string& nodeName);
 
     void addAutopilotFromFile( const std::string & name, SGPropertyNode_ptr apNode, const char * path );

src/Autopilot/digitalfilter.hxx

@@ -62,6 +62,9 @@ public:
     DigitalFilter();
     ~DigitalFilter();
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "filter"; }
+
     virtual bool configure( SGPropertyNode& prop_root,
                             SGPropertyNode& cfg );
 };

src/Autopilot/flipflop.hxx

@@ -66,6 +66,8 @@ public:
 class FlipFlop : public Logic
 {
 public:
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "flipflop"; }
 
 protected:
     /**

src/Autopilot/logic.hxx

@@ -39,6 +39,9 @@ public:
     void set_output( bool value );
     bool get_output() const;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "logic"; }
+
 protected:
     void update( bool firstTime, double dt );
 };

src/Autopilot/pidcontroller.hxx

@@ -70,6 +70,9 @@ public:
     PIDController();
     ~PIDController() {}
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "pid-controller"; }
+
     void update( bool firstTime, double dt );
 };
 

src/Autopilot/pisimplecontroller.hxx

@@ -57,6 +57,9 @@ public:
     PISimpleController();
     ~PISimpleController() {}
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "pi-simple-controller"; }
+
     void update( bool firstTime, double dt );
 };
 

src/Autopilot/predictor.hxx

@@ -61,6 +61,9 @@ public:
     Predictor();
     ~Predictor() {}
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "predict-simple"; }
+
     void update( bool firstTime, double dt );
 };
 

src/Canvas/gui_mgr.hxx

@@ -44,6 +44,9 @@ public:
     void shutdown() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "CanvasGUI"; }
+
     simgear::canvas::WindowPtr createWindow(const std::string& name = "");
 
     /**

src/Cockpit/NavDisplay.hxx

@@ -66,6 +66,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "navigation-display"; }
+
     void invalidatePositionedCache()
     {
         _cachedItemsValid = false;

src/Cockpit/agradar.hxx

@@ -41,6 +41,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "air-ground-radar"; }
+
     void setUserPos();
     void setUserVec(double az, double el);
     void update_terrain();

src/Cockpit/cockpitDisplayManager.hxx

@@ -43,6 +43,9 @@ public:
     void init() override;
     InitStatus incrementalInit() override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "cockpit-displays"; }
+
 private:
     bool build (SGPropertyNode* config_props);
 

src/Cockpit/groundradar.hxx

@@ -41,6 +41,9 @@ class GroundRadar : public SGSubsystem,
                     private FGODGauge
 {
 public:
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "groundradar"; }
+
     static const int TextureHalfSize = 256;
     GroundRadar(SGPropertyNode* node);
     virtual ~GroundRadar();

src/Cockpit/wxradar.hxx

@@ -49,6 +49,9 @@ public:
     void shutdown() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "radar"; }
+
     virtual void valueChanged(SGPropertyNode *);
 
 protected:

src/Environment/environment_ctrl.cxx

@@ -114,6 +114,9 @@ public:
     void unbind() override;
     void update(double delta_time_sec) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "layer-interpolate-controller"; }
+
 private:
     SGPropertyNode_ptr _rootNode;
     bool _enabled;

src/Environment/environment_mgr.hxx

@@ -54,6 +54,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "environment"; }
+
     /**
      * Get the environment information for the plane's current position.
      */

src/Environment/magvarmanager.hxx

@@ -40,6 +40,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "magvar"; }
+
 private:
     std::unique_ptr<SGMagVar> _magVar;
 

src/Environment/precipitation_mgr.hxx

@@ -51,6 +51,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "precipitation"; }
+
     void setupSceneGraph(void);
     void setPrecipitationLevel(double l);
 };

src/Environment/realwx_ctrl.cxx

@@ -412,6 +412,9 @@ public:
     {
     }
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "noaa-metar-real-wx-controller"; }
+
 private:
     std::string noaa_base_url;
 };

src/Environment/ridge_lift.hxx

@@ -50,6 +50,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "ridgelift"; }
+
     inline double getStrength() const { return strength; };
 
     inline double get_probe_elev_m( int index ) const { return probe_elev_m[index]; };

src/Environment/terrainsampler.cxx

@@ -57,6 +57,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "area"; }
+
     int getElevationHistogramStep() const { return _elevationHistogramStep; }
     void setElevationHistograpStep( int value ) {
         _elevationHistogramStep = value > 0 ? value : 500;
@@ -333,6 +336,9 @@ public:
     void unbind() override;
     void update(double delta_time_sec) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "terrain-sampler"; }
+
 private:
     inline string areaSubsystemName( unsigned i ) {
         ostringstream name;

src/FDM/ExternalNet/ExternalNet.hxx

@@ -57,6 +57,9 @@ public:
     // Subsystem API.
     void init() override;
     void update(double dt) override;
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "network"; }
 };
 
 #endif // _EXTERNAL_NET_HXX

src/FDM/ExternalPipe/ExternalPipe.hxx

@@ -73,6 +73,9 @@ public:
     // Subsystem API.
     void init() override;
     void update(double dt) override;
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "pipe"; }
 };
 
 #endif // _EXTERNAL_PIPE_HXX

src/FDM/JSBSim/JSBSim.hxx

@@ -114,6 +114,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "jsb"; }
+
     /// copy FDM state to LaRCsim structures
     bool copy_to_JSBsim();
 

src/FDM/LaRCsim/LaRCsim.hxx

@@ -52,6 +52,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "larcsim"; }
+
     // copy FDM state to LaRCsim structures
     bool copy_to_LaRCsim();
 

src/FDM/NullFDM.hxx

@@ -38,6 +38,9 @@ public:
     // Subsystem API.
     void init() override;
     void update(double dt) override;
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "null"; }
 };
 
 #endif // _NULLFDM_HXX

src/FDM/SP/ACMS.hxx

@@ -38,6 +38,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "acms"; }
+
 private:
     SGPropertyNode_ptr _alt, _speed, _climb_rate;
     SGPropertyNode_ptr _pitch, _roll, _heading;

src/FDM/SP/ADA.hxx

@@ -76,6 +76,9 @@ public:
     // Subsystem API.
     void init() override;
     void update(double dt) override;
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "ada"; }
 };
 
 #endif // _ADA_HXX

src/FDM/SP/AISim.hpp

@@ -79,6 +79,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "aisim"; }
+
     bool load(std::string path);
 
 #ifdef ENABLE_SP_FDM

src/FDM/SP/Balloon.h

@@ -67,6 +67,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "balloon"; }
+
     // copy FDM state to BalloonSim structures
     bool copy_to_BalloonSim();
 

src/FDM/SP/MagicCarpet.hxx

@@ -37,6 +37,9 @@ public:
     // Subsystem API.
     void init() override;
     void update(double dt) override;
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "magic"; }
 };
 
 #endif // _MAGICCARPET_HXX

src/FDM/UFO.hxx

@@ -67,6 +67,9 @@ public:
     // Subsystem API.
     void init() override;
     void update(double dt) override;
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "ufo"; }
 };
 
 #endif // _UFO_HXX

src/FDM/YASim/YASim.hxx

@@ -18,6 +18,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "yasim"; }
+
 private:
     void report();
     void copyFromYASim();

src/Input/FGHIDEventInput.hxx

@@ -47,7 +47,7 @@ public:
     void update(double dt) override;
 
     // Subsystem identification.
-    static const char* staticSubsystemClassId() { return "input-hid"; }
+    static const char* staticSubsystemClassId() { return "input-event-hid"; }
 
 private:
     class FGHIDEventInputPrivate;

src/Input/FGJoystickInput.hxx

@@ -49,6 +49,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "input-joystick"; }
+
     static const int MAX_JOYSTICKS        = 16;
     static const int MAX_JOYSTICK_AXES    = _JS_MAX_AXES;
     static const int MAX_JOYSTICK_BUTTONS = 32;

src/Input/FGKeyboardInput.hxx

@@ -51,6 +51,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "input-keyboard"; }
+
     static const int MAX_KEYS = 1024;
 
 private:

src/Input/FGLinuxEventInput.hxx

@@ -75,6 +75,9 @@ public:
     void postinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "input-event"; }
+
 protected:
 };
 

src/Input/FGMacOSXEventInput.hxx

@@ -55,6 +55,9 @@ public:
     void shutdown() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "input-event"; }
+
 private:
     friend class FGMacOSXEventInputPrivate;
 

src/Instrumentation/HUD/HUD.hxx

@@ -127,6 +127,9 @@ public:
     void reinit() override;
     void update(double) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "hud"; }
+
     // called from Main/renderer.cxx to draw 2D and 3D HUD
     void draw(osg::State&);
 

src/Instrumentation/KLN89/kln89.hxx

@@ -102,6 +102,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "KLN89"; }
+
     // Set Units
     // m if true, ft if false
     inline void SetAltUnitsSI(bool b) { _altUnits = (b ? GPS_ALT_UNITS_M : GPS_ALT_UNITS_FT); }

src/Instrumentation/adf.hxx

@@ -47,6 +47,9 @@ public:
     void init() override;
     void update(double delta_time_sec) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "adf"; }
+
 private:
     void set_bearing (double delta_time_sec, double bearing);
 

src/Instrumentation/airspeed_indicator.hxx

@@ -45,6 +45,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "airspeed-indicator"; }
+
 private:
     void computeMach();
 

src/Instrumentation/altimeter.hxx

@@ -40,6 +40,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "altimeter"; }
+
     double getSettingInHg() const;
     void setSettingInHg( double value );
     double getSettingHPa() const;

src/Instrumentation/attitude_indicator.hxx

@@ -49,6 +49,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "attitude-indicator"; }
+
 private:
     std::string _name;
     int _num;

src/Instrumentation/clock.hxx

@@ -36,6 +36,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "clock"; }
+
 private:
     std::string _name;
     unsigned int _num;

src/Instrumentation/commradio.hxx

@@ -40,6 +40,9 @@ typedef SGSharedPtr<SignalQualityComputer> SignalQualityComputerRef;
 class CommRadio : public AbstractInstrument
 {
 public:
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "comm-radio"; }
+
     static SGSubsystem * createInstance( SGPropertyNode_ptr rootNode );
 };
 

src/Instrumentation/dme.hxx

@@ -43,6 +43,9 @@ public:
     void reinit() override;
     void update(double delta_time_sec) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "dme"; }
+
 private:
 	void clear();
 

src/Instrumentation/gps.hxx

@@ -71,6 +71,9 @@ public:
     void unbind() override;
     void update(double delta_time_sec) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "gps"; }
+
     // RNAV interface
     virtual SGGeod position();
     virtual double trackDeg();

src/Instrumentation/gsdi.hxx

@@ -51,6 +51,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "gsdi"; }
+
 private:
     std::string _name;
     unsigned int _num;

src/Instrumentation/heading_indicator.hxx

@@ -46,6 +46,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "heading-indicator"; }
+
 private:
     Gyro _gyro;
     double _last_heading_deg;

src/Instrumentation/heading_indicator_dg.hxx

@@ -44,6 +44,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "heading-indicator-dg"; };
+
 private:
     Gyro _gyro;
     double _last_heading_deg, _last_indicated_heading_dg;

src/Instrumentation/heading_indicator_fg.hxx

@@ -46,6 +46,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "heading-indicator-fg"; }
+
 private:
     Gyro _gyro;
     double _last_heading_deg;

src/Instrumentation/inst_vertical_speed_indicator.hxx

@@ -59,6 +59,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "inst-vertical-speed-indicator"; }
+
 private:
     std::string _name;
     int _num;

src/Instrumentation/instrument_mgr.hxx

@@ -35,6 +35,9 @@ public:
     void init() override;
     InitStatus incrementalInit() override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "instrumentation"; }
+
 private:
     bool build (SGPropertyNode* config_props);
 

src/Instrumentation/kr_87.hxx

@@ -115,6 +115,9 @@ public:
     void unbind() override;
     void update(double dt_sec) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "KR-87"; }
+
     // Update nav/adf radios based on current postition
     void search ();
 

src/Instrumentation/mag_compass.hxx

@@ -50,6 +50,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "magnetic-compass"; }
+
 private:
     double _rate_degps;
 

src/Instrumentation/marker_beacon.hxx

@@ -73,6 +73,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "marker-beacon"; }
+
     void search ();
 
     // Marker Beacon Accessors

src/Instrumentation/mk_viii.hxx

@@ -1379,6 +1379,9 @@ public:
     void init() override;
     void unbind() override;
     void update(double dt) override;
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "mk-viii"; }
 };
 
 #ifdef _MSC_VER

src/Instrumentation/mrg.hxx

@@ -47,6 +47,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "master-reference-gyro"; }
+
 private:
     static const double gravity; //conversion factor
 

src/Instrumentation/navradio.hxx

@@ -178,6 +178,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "old-navradio"; }
+
     // Update nav/adf radios based on current postition
     void search ();
     void updateNav();

src/Instrumentation/newnavradio.hxx

@@ -31,6 +31,9 @@ namespace Instrumentation {
 class NavRadio : public SGSubsystem
 {
 public:
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "nav-radio"; }
+
     static SGSubsystem * createInstance( SGPropertyNode_ptr rootNode );
 };
 

src/Instrumentation/rad_alt.hxx

@@ -38,6 +38,9 @@ public:
     void init() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "radar-altimeter"; }
+
 private:
     void update_altitude();
     void updateSetHeight();

src/Instrumentation/slip_skid_ball.hxx

@@ -39,6 +39,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "slip-skid-ball"; }
+
 private:
     std::string _name;
     int _num;

src/Instrumentation/tacan.hxx

@@ -43,6 +43,9 @@ public:
     void reinit() override;
     void update(double delta_time_sec) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "tacan"; }
+
 private:
     void disabled(bool force = false);
 

src/Instrumentation/tcas.hxx

@@ -388,6 +388,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "tcas"; }
+
     /* configuration options */
     int  _verticalRange;
     int  _lateralRange;

src/Instrumentation/transponder.hxx

@@ -40,6 +40,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "transponder"; }
+
 protected:
     bool isPowerSwitchOn() const override;
 

src/Instrumentation/turn_indicator.hxx

@@ -48,6 +48,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "turn-indicator"; }
+
 private:
     Gyro _gyro;
     double _last_rate;

src/Instrumentation/vertical_speed_indicator.hxx

@@ -42,6 +42,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "vertical-speed-indicator"; }
+
 private:
     double _casing_pressure_Pa = 0.0;
     double _casing_airmass_kg = 0.0;

src/Main/FGInterpolator.hxx

@@ -26,6 +26,9 @@ class FGInterpolator : public simgear::PropertyInterpolationMgr
 public:
     FGInterpolator();
     ~FGInterpolator();
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "prop-interpolator"; }
 };
 
 #endif /* FG_INTERPOLATOR_HXX_ */

src/Main/fg_io.hxx

@@ -48,12 +48,16 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "io"; }
+
     /**
      * helper to determine early in startup, if MP will be used.
      * This information is needed in the position-init code, to adjust the
      * start position off active runways.
      */
     static bool isMultiplayerRequested();
+
 private:
     void add_channel(const std::string& config);
     FGProtocol* parse_port_config( const std::string& cfgstr );

src/Main/fg_props.hxx

@@ -29,6 +29,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "properties"; }
+
 private:
     simgear::TiedPropertyList _tiedProperties;
 

src/Main/logger.hxx

@@ -27,6 +27,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "logger"; }
+
 private:
     /**
      * A single instance of a log file (the logger can contain many).

src/MultiPlayer/multiplaymgr.hxx

@@ -60,6 +60,9 @@ public:
     void shutdown() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "mp"; }
+
     // transmitter
 
     void SendTextMessage(const std::string &sMsgText);

src/Network/Swift/swift_connection.hxx

@@ -47,6 +47,9 @@ public:
     void shutdown() override;
     void update(double delta_time_sec) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "swift"; }
+
     bool startServer(const SGPropertyNode* arg, SGPropertyNode* root);
     bool stopServer(const SGPropertyNode* arg, SGPropertyNode* root);
     FGSwiftBus::CPlugin* plug;

src/Network/fgcom.hxx

@@ -38,6 +38,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "fgcom"; }
+
     virtual void valueChanged(SGPropertyNode *prop);
     void iaxTextEvent(struct iaxc_ev_text text);
 

src/Network/http/httpd.cxx

@@ -185,6 +185,9 @@ public:
     void unbind() override;          // shutdown of mongoose, clear connections, unregister URIHandlers
     void update(double dt) override; // poll connections, check for changed properties
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "mongoose-httpd"; }
+
     /**
      * Returns a URIHandler for the given uri
      *

src/Network/http/httpd.hxx

@@ -34,6 +34,9 @@ extern const char * PROPERTY_ROOT;
 class FGHttpd : public SGSubsystem
 {
 public:
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "httpd"; }
+
     static FGHttpd * createInstance( SGPropertyNode_ptr configNode );
 };
 

src/Sound/voice.hxx

@@ -61,6 +61,9 @@ public:
     void shutdown() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "voice"; }
+
     class FGVoice;
 
 protected:

src/Systems/electrical.hxx

@@ -225,6 +225,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "electrical"; }
+
     bool build (SGPropertyNode* config_props);
     float propagate( FGElectricalComponent *node, double dt,
                      float input_volts, float input_amps,

src/Systems/pitot.hxx

@@ -50,6 +50,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "pitot"; }
+
 private:
     std::string _name;
     int _num;

src/Systems/static.hxx

@@ -47,6 +47,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "static"; }
+
 private:
     std::string _name;
     int _num;

src/Systems/system_mgr.hxx

@@ -31,6 +31,9 @@ public:
     FGSystemMgr ();
     virtual ~FGSystemMgr ();
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "systems"; }
+
     bool build (SGPropertyNode* config_props);
 };
 

src/Systems/vacuum.hxx

@@ -47,6 +47,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "vacuum"; }
+
 private:
     std::string _name;
     int _num;

src/Time/light.hxx

@@ -146,6 +146,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "lighting"; }
+
     // Color related functions
 
     inline const SGVec4f& scene_ambient () const { return _scene_ambient; }

src/Traffic/TrafficMgr.hxx

@@ -118,6 +118,9 @@ public:
     void init() override;
     void update(double time) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "traffic-manager"; }
+
     FGScheduledFlightVecIterator getFirstFlight(const std::string &ref) { return flights[ref].begin(); }
     FGScheduledFlightVecIterator getLastFlight(const std::string &ref) { return flights[ref].end(); }
 };

src/Viewer/view.hxx

@@ -72,6 +72,8 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "view"; }
 
     //////////////////////////////////////////////////////////////////////
     // Part 2: user settings.

utils/fgpanel/FGPanel.hxx

@@ -63,6 +63,9 @@ public:
     void unbind() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "panel"; }
+
     // transfer pointer ownership!!!
     virtual void addInstrument (FGPanelInstrument * const instrument);
 

utils/fgpanel/FGPanelProtocol.hxx

@@ -39,6 +39,9 @@ public:
     void reinit() override;
     void update(double dt) override;
 
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "panel-protocol"; }
+
 private:
     SGPropertyNode_ptr root;
     SGIOChannel *io;

utils/fgpanel/panel_io.hxx

@@ -34,6 +34,9 @@
 class FGReadablePanel : public FGPanel
 {
 public:
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "readable-panel"; }
+
     static SGSharedPtr<FGPanel> read (SGPropertyNode_ptr root);
 };