Add sleep to avoid 100% busy CPU loop in PhysicsServerExample

Added btClock::usleep
Fix broken TinyRenderer example code.

build3/premake4.lua

@@ -96,8 +96,8 @@ end
 
 		
 if os.is("Windows") then
- 		default_python_include_dir = "C:/Python34/include"
+ 		default_python_include_dir = "C:\Python-3.5.2/include"
- 		default_python_lib_dir = "C:/Python34/libs"
+ 		default_python_lib_dir = "C:/Python-3.5.2/libs"
 end
 
 		newoption
@@ -164,7 +164,7 @@ end
 			platforms {"x32"}
 		end
 	else
-		platforms {"x64"}
+		platforms {"x32","x64"}
 	end
 
 	configuration {"x32"}

build_visual_studio.bat

@@ -2,7 +2,8 @@
 rem premake4 --with-pe  vs2010
 rem premake4  --bullet2demos vs2010
 cd build3
-premake4   --enable_openvr --targetdir="../bin" vs2010 
+premake4   --enable_openvr  --targetdir="../bin" vs2010 
+rem premake4   --enable_openvr --enable_pybullet --targetdir="../bin" vs2010 
 rem premake4   --targetdir="../server2bin" vs2010 
 rem cd vs2010
 rem rename 0_Bullet3Solution.sln 0_server.sln

examples/ExampleBrowser/InProcessExampleBrowser.cpp

@@ -332,6 +332,7 @@ btInProcessExampleBrowserInternalData* btCreateInProcessExampleBrowser(int argc,
 
 	while (data->m_args.m_cs->getSharedParam(0)==eExampleBrowserIsUnInitialized)
 	{
+		b3Clock::usleep(1000);
 	}
 
 	return data;
@@ -366,6 +367,7 @@ void btShutDownExampleBrowser(btInProcessExampleBrowserInternalData* data)
                         } else
                         {
 //                              printf("polling..");
+							b3Clock::usleep(1000);
                         }
                 };
 

examples/ExampleBrowser/OpenGLExampleBrowser.cpp

@@ -107,7 +107,7 @@ static CommonExampleInterface* sCurrentDemo = 0;
 static b3AlignedObjectArray<const char*> allNames;
 static float gFixedTimeStep = 0;
 bool gAllowRetina = true;
-
+bool gDisableDemoSelection = false;
 static class ExampleEntries* gAllExamples=0;
 bool sUseOpenGL2 = false;
 bool drawGUI=true;
@@ -556,9 +556,11 @@ struct MyMenuItemHander :public Gwen::Event::Handler
 		Gwen::String laa = Gwen::Utility::UnicodeToString(la);
 		//const char* ha = laa.c_str();
 
-		
+		if (!gDisableDemoSelection )
-		selectDemo(sCurrentHightlighted);
+		{
-		saveCurrentSettings(sCurrentDemoIndex, startFileName);
+			selectDemo(sCurrentHightlighted);
+			saveCurrentSettings(sCurrentDemoIndex, startFileName);
+		}
 	}
 	void onButtonC(Gwen::Controls::Base* pControl)
 	{
@@ -580,8 +582,11 @@ struct MyMenuItemHander :public Gwen::Event::Handler
 		*/
 
 	//	printf("onKeyReturn ! \n");
-		selectDemo(sCurrentHightlighted);
+		if (!gDisableDemoSelection )
-		saveCurrentSettings(sCurrentDemoIndex, startFileName);
+		{
+			selectDemo(sCurrentHightlighted);
+			saveCurrentSettings(sCurrentDemoIndex, startFileName);
+		}
 
 	}
 
@@ -1228,5 +1233,6 @@ void OpenGLExampleBrowser::update(float deltaTime)
 
 void OpenGLExampleBrowser::setSharedMemoryInterface(class SharedMemoryInterface* sharedMem)
 {
+	gDisableDemoSelection = true;
 	sSharedMem = sharedMem;
 }

examples/SharedMemory/PhysicsServerExample.cpp

@@ -107,6 +107,7 @@ struct MotionThreadLocalStorage
 };
 
 int skip = 0;
+int skip1 = 0;
 
 void	MotionThreadFunc(void* userPtr,void* lsMemory)
 {
@@ -134,8 +135,15 @@ void	MotionThreadFunc(void* userPtr,void* lsMemory)
 			if (deltaTimeInSeconds<(1./5000.))
 			{
 				skip++;
+				skip1++;
+				if (0==(skip1&0x3))
+				{
+					b3Clock::usleep(250);
+				}
 			} else
 			{
+				skip1=0;
+				
 				//process special controller commands, such as
 				//VR controller button press/release and controller motion
 
@@ -186,8 +194,9 @@ void	MotionThreadFunc(void* userPtr,void* lsMemory)
 	}
 
 
-	printf("finished, #skip = %d\n",skip);
+	printf("finished, #skip = %d, skip1 = %d\n",skip,skip1);
 	skip=0;
+	skip1=0;
 	//do nothing
 
 }
@@ -638,8 +647,10 @@ void	PhysicsServerExample::initPhysics()
 			int index = 0;
 			
 			m_threadSupport->runTask(B3_THREAD_SCHEDULE_TASK, (void*) &this->m_args[w], w);
+			
 			while (m_args[w].m_cs->getSharedParam(0)==eMotionIsUnInitialized)
 			{
+				b3Clock::usleep(1000);
 			}
 		}
 
@@ -669,6 +680,7 @@ void    PhysicsServerExample::exitPhysics()
 
                         } else
                         {
+							b3Clock::usleep(1000);
                         }
                 };
 

examples/StandaloneMain/main_tinyrenderer_single_example.cpp

@@ -348,7 +348,12 @@ struct TinyRendererGUIHelper : public GUIHelperInterface
 
 	}
 
-	virtual void copyCameraImageData(const float viewMatrix[16], const float projectionMatrix[16],unsigned char* pixelsRGBA, int rgbaBufferSizeInPixels, float* depthBuffer, int depthBufferSizeInPixels, int startPixelIndex, int width, int height, int* numPixelsCopied)
+	
+	virtual void copyCameraImageData(const float viewMatrix[16], const float projectionMatrix[16], 
+		unsigned char* pixelsRGBA, int rgbaBufferSizeInPixels, 
+		float* depthBuffer, int depthBufferSizeInPixels, 
+		int* segmentationMaskBuffer, int segmentationMaskBufferSizeInPixels,
+		int startPixelIndex, int destinationWidth, int destinationHeight, int* numPixelsCopied)
 	{
 		if (numPixelsCopied)
 			*numPixelsCopied = 0;

examples/Utils/b3Clock.cpp

@@ -36,6 +36,7 @@ const T& b3ClockMin(const T& a, const T& b)
 
 #else //_WIN32
 #include <sys/time.h>
+#include <unistd.h>
 #endif //_WIN32
 
 
@@ -227,3 +228,21 @@ double b3Clock::getTimeInSeconds()
 	return double(getTimeMicroseconds()/1.e6);
 }
 
+void b3Clock::usleep(int microSeconds)
+{
+#ifdef _WIN32
+	int millis = microSeconds/1000;
+	if (millis < 1)
+	{
+		millis = 1;
+	}
+	Sleep(millis);
+#else
+
+    usleep(microSeconds); /
+	//struct timeval tv;
+	//tv.tv_sec = microSeconds/1000000L;
+	//tv.tv_usec = microSeconds%1000000L;
+	//return select(0, 0, 0, 0, &tv);
+#endif
+}

examples/Utils/b3Clock.h

@@ -28,6 +28,10 @@ public:
 	/// the Clock was created.
 	double getTimeInSeconds();
 
+	///Sleep for 'microSeconds', to yield to other threads and not waste 100% CPU cycles.
+	///Note that some operating systems may sleep a longer time.
+	static void usleep(int microSeconds);
+
 private:
 	struct b3ClockData* m_data;
 };

examples/pybullet/premake4.lua

@@ -5,7 +5,6 @@ project ("pybullet")
 		kind "SharedLib"
 		targetsuffix ("")
 		targetprefix ("")
-		targetextension (".so")
 		includedirs {"../../src", "../../examples",
 		"../../examples/ThirdPartyLibs"}
 		defines {"PHYSICS_IN_PROCESS_EXAMPLE_BROWSER"}