Improve timing statistics

[flightgear.git] / src / Main / main.cxx

diff --git a/src/Main/main.cxx b/src/Main/main.cxx
index 8dbd12642509d3ff2beb8347d474934e4baae221..33bb062bbe081950e78252babb3120cfcf214111 100644 (file)
--- a/src/Main/main.cxx
+++ b/src/Main/main.cxx
@@ -46,9 +46,11 @@
 #include <simgear/structure/event_mgr.hxx>
 #include <simgear/props/AtomicChangeListener.hxx>
 #include <simgear/props/props.hxx>
-//#include <simgear/timing/sg_time.hxx>
+#include <simgear/timing/sg_time.hxx>
+#include <simgear/magvar/magvar.hxx>
 #include <simgear/math/sg_random.h>
 #include <simgear/io/raw_socket.hxx>
+#include <simgear/misc/sg_sleep.hxx>
 
 #include <Time/light.hxx>
 #include <Aircraft/replay.hxx>
@@ -65,6 +67,7 @@
 #include <Time/TimeManager.hxx>
 #include <Environment/environment_mgr.hxx>
 #include <Environment/ephemeris.hxx>
+#include <GUI/gui.h>
 #include <GUI/new_gui.hxx>
 #include <MultiPlayer/multiplaymgr.hxx>
 
@@ -118,6 +121,15 @@ static void fgMainLoop( void ) {
     static SGPropertyNode_ptr frame_signal
         = fgGetNode("/sim/signals/frame", true);
 
+    static SGPropertyNode_ptr _statisticsFlag
+        = fgGetNode("/sim/timing-statistics/enabled", true);
+    static SGPropertyNode_ptr _statisticsInterval
+        = fgGetNode("/sim/timing-statistics/interval-s", true);
+    static SGPropertyNode_ptr _statiticsMinJitter
+        = fgGetNode("/sim/timing-statistics/min-jitter-ms", true);
+    static SGPropertyNode_ptr _statiticsMinTime
+        = fgGetNode("/sim/timing-statistics/min-time-ms", true);
+
     frame_signal->fireValueChanged();
     SGCloudLayer::enable_bump_mapping = fgGetBool("/sim/rendering/bump-mapping");
     
@@ -140,11 +152,8 @@ static void fgMainLoop( void ) {
                                 altitude->getDoubleValue() * SG_FEET_TO_METER,
                                 globals->get_time_params()->getJD() );
 
-#if ENABLE_ATCDCL  
     // Run ATC subsystem
-    if (fgGetBool("/sim/atc/enabled"))
-        globals->get_ATC_mgr()->update(sim_dt);
-#endif  
+    globals->get_ATC_mgr()->update(sim_dt);
     
     globals->get_subsystem_mgr()->update(sim_dt);
 
@@ -187,17 +196,47 @@ static void fgMainLoop( void ) {
     }
 #endif
 
-    // END Tile Manager udpates
+    // END Tile Manager updates
     bool scenery_loaded = fgGetBool("sim/sceneryloaded");
-    if (!scenery_loaded && globals->get_tile_mgr()->isSceneryLoaded()
-        && fgGetBool("sim/fdm-initialized")) {
-        fgSetBool("sim/sceneryloaded",true);
-        if (fgGetBool("/sim/sound/working")) {
-            globals->get_soundmgr()->activate();
+    if (!scenery_loaded)
+    {
+        if (globals->get_tile_mgr()->isSceneryLoaded()
+             && fgGetBool("sim/fdm-initialized")) {
+            fgSetBool("sim/sceneryloaded",true);
+            if (fgGetBool("/sim/sound/working")) {
+                globals->get_soundmgr()->activate();
+            }
+            globals->get_props()->tie("/sim/sound/devices/name",
+                  SGRawValueFunctions<const char *>(0, fgSetNewSoundDevice), false);
+        }
+        else
+        {
+            // be nice to loader threads while waiting for initial scenery, reduce to 2fps
+            simgear::sleepForMSec(500);
+        }
+    }
+
+    // print timing statistics
+    static bool _lastStatisticsFlag = false;
+    if (_lastStatisticsFlag != _statisticsFlag->getBoolValue())
+    {
+        // flag has changed, update subsystem manager
+        _lastStatisticsFlag = _statisticsFlag->getBoolValue();
+        globals->get_subsystem_mgr()->collectDebugTiming(_lastStatisticsFlag);
+    }
+    if (_lastStatisticsFlag)
+    {
+        static double elapsed = 0;
+        elapsed += real_dt;
+        if (elapsed >= _statisticsInterval->getDoubleValue())
+        {
+            // print and reset timing statistics
+            globals->get_subsystem_mgr()->printTimingStatistics(_statiticsMinTime->getDoubleValue(),
+                                                                _statiticsMinJitter->getDoubleValue());
+            elapsed = 0;
         }
-        globals->get_props()->tie("/sim/sound/devices/name",
-              SGRawValueFunctions<const char *>(0, fgSetNewSoundDevice), false);
     }
+
     simgear::AtomicChangeListener::fireChangeListeners();
 
     SG_LOG( SG_ALL, SG_DEBUG, "" );