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/* Copyright (c) <2003-2011> <Julio Jerez, Newton Game Dynamics>
*
* 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.
*/
#if !defined(AFX_DG_THREADS_42YH_HY78GT_YHJ63Y__INCLUDED_)
#define AFX_DG_THREADS_42YH_HY78GT_YHJ63Y__INCLUDED_
#define DG_MAXQUEUE 16
class dgWorkerThread {
public:
dgWorkerThread() {
m_threadIndex = -1;
}
virtual void ThreadExecute() = 0;
virtual ~dgWorkerThread() {}
dgInt32 m_threadIndex;
};
class dgThreads {
public:
dgThreads();
~dgThreads();
void CreateThreaded(dgInt32 threadCount);
void DestroydgThreads();
void ClearTimers();
void SetPerfomanceCounter(OnGetPerformanceCountCallback callback);
dgUnsigned32 GetPerfomanceTicks(dgUnsigned32 threadIndex) const;
dgInt32 GetThreadCount() const ;
dgInt32 SubmitJob(dgWorkerThread *const job);
void SynchronizationBarrier();
void CalculateChunkSizes(dgInt32 elements, dgInt32 *const chunkSizes) const;
void dgGetLock() const;
void dgReleaseLock() const;
void dgGetIndirectLock(dgInt32 *lockVar);
void dgReleaseIndirectLock(dgInt32 *lockVar);
private:
struct dgLocadData {
dgInt32 m_ticks;
dgInt32 m_threadIndex;
dgThreads *m_manager;
};
void DoWork(dgInt32 threadIndex);
dgInt32 GetWork(dgWorkerThread **cWork);
static void *ThreadExecute(void *Param);
dgInt32 m_numOfThreads;
dgInt32 m_numberOfCPUCores;
dgInt32 m_topIndex;
dgInt32 m_bottomIndex;
dgInt32 m_workInProgress;
mutable dgInt32 m_globalSpinLock;
bool m_exit;
//dgInt32 m_emptySlot;
//dgInt32 m_workToDo;
//dgInt32 m_criticalSection;
dgInt32 m_workToDoSpinLock;
dgWorkerThread *m_queue[DG_MAXQUEUE];
//pthread_t m_threadhandles[DG_MAXIMUN_THREADS];
OnGetPerformanceCountCallback m_getPerformanceCount;
dgLocadData m_localData[DG_MAXIMUN_THREADS];
};
#endif
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