add example/MultiThreading functions

examples/MultiThreading/b3ThreadSupportInterface.h

@@ -0,0 +1,90 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2007 Erwin Coumans  http://bulletphysics.com
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef B3_THREAD_SUPPORT_INTERFACE_H
+#define B3_THREAD_SUPPORT_INTERFACE_H
+
+enum
+{
+	B3_THREAD_SCHEDULE_TASK=1,
+};
+
+#include "Bullet3Common/b3Scalar.h" //for B3_ATTRIBUTE_ALIGNED16
+//#include "PlatformDefinitions.h"
+//#include "PpuAddressSpace.h"
+
+class b3Barrier {
+public:
+	b3Barrier() {}
+	virtual ~b3Barrier() {}
+
+	virtual void sync() = 0;
+	virtual void setMaxCount(int n) = 0;
+	virtual int  getMaxCount() = 0;
+};
+
+class b3CriticalSection {
+public:
+	b3CriticalSection() {}
+	virtual ~b3CriticalSection() {}
+
+	B3_ATTRIBUTE_ALIGNED16(unsigned int mCommonBuff[32]);
+
+	virtual unsigned int getSharedParam(int i) = 0;
+	virtual void setSharedParam(int i,unsigned int p) = 0;
+
+	virtual void lock() = 0;
+	virtual void unlock() = 0;
+};
+
+
+class b3ThreadSupportInterface
+{
+public:
+
+	virtual ~b3ThreadSupportInterface();
+
+
+	virtual void sendRequest(int uiCommand, void* uiArgument0, int uiArgument1) =0;
+
+
+	virtual	void waitForResponse(int *puiArgument0, int *puiArgument1) =0;
+
+
+	///non-blocking test if a task is completed. First implement all versions, and then enable this API
+	virtual bool isTaskCompleted(int *puiArgument0, int *puiArgument1, int timeOutInMilliseconds)=0;
+
+
+	virtual	void stopThreads()=0;
+
+	///tell the task scheduler to use no more than numTasks tasks
+	virtual void	setNumTasks(int numTasks)=0;
+
+	virtual int		getNumTasks() const = 0;
+
+	virtual b3Barrier*	createBarrier() = 0;
+
+	virtual b3CriticalSection* createCriticalSection() = 0;
+
+	virtual void deleteBarrier(b3Barrier* barrier)=0;
+
+    virtual void deleteCriticalSection(b3CriticalSection* criticalSection)=0;
+
+	virtual void*	getThreadLocalMemory(int taskId) { return 0; }
+
+};
+
+#endif //B3_THREAD_SUPPORT_INTERFACE_H
+