btThreadSupportInterface.h

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/*
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 BT_THREAD_SUPPORT_INTERFACE_H
#define BT_THREAD_SUPPORT_INTERFACE_H


#include <LinearMath/btScalar.h> //for ATTRIBUTE_ALIGNED16
#include "PlatformDefinitions.h"
#include "PpuAddressSpace.h"

class btBarrier {
public:
        btBarrier() {}
        virtual ~btBarrier() {}

        virtual void sync() = 0;
        virtual void setMaxCount(int n) = 0;
        virtual int  getMaxCount() = 0;
};

class btCriticalSection {
public:
        btCriticalSection() {}
        virtual ~btCriticalSection() {}

        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 btThreadSupportInterface
{
public:

        virtual ~btThreadSupportInterface();

        virtual void sendRequest(uint32_t uiCommand, ppu_address_t uiArgument0, uint32_t uiArgument1) =0;

        virtual void waitForResponse(unsigned int *puiArgument0, unsigned int *puiArgument1) =0;



        virtual void startSPU() =0;

        virtual void stopSPU()=0;

        virtual void    setNumTasks(int numTasks)=0;

        virtual int             getNumTasks() const = 0;

        virtual btBarrier*      createBarrier() = 0;

        virtual btCriticalSection* createCriticalSection() = 0;

        virtual void deleteBarrier(btBarrier* barrier)=0;

    virtual void deleteCriticalSection(btCriticalSection* criticalSection)=0;
        
        virtual void*   getThreadLocalMemory(int taskId) { return 0; }

};

#endif //BT_THREAD_SUPPORT_INTERFACE_H