windows 下C++對象池實現，支持併發

#pragma once
//#include "FSNIAlgo.h"
#include "Windows.h"
#include <queue>

#define MINALGOSIZE 1



template<class T>
class FSNIObjPool
{
public:
	FSNIObjPool(void);
	~FSNIObjPool(void);

	void AlloAlgoPool();

	T* GetAlgoObj();

	void ReleaseAlgoObj(T *p);

	void DeleteAlgoObj(T *obj);
private:
	HANDLE m_hAlgoMutex;

	std::queue<T *> m_queAlgoPool;

};

<pre name="code" class="cpp">#include "StdAfx.h"
#include "FSNIObjPool.h"

template<typename T>
FSNIObjPool<T>::FSNIObjPool(void)
{
	m_hAlgoMutex = CreateMutex(NULL, FALSE, NULL);

	if (!m_hAlgoMutex)
	{
		printf("CreateMutex failed, error id=%d!!!!!", GetLastError());
	}
}

template<typename T>
FSNIObjPool<T>::~FSNIObjPool(void)
{
	int i = m_queAlgoPool.size();
	while(m_queAlgoPool.size()>0)
	{
		T *fsni = m_queAlgoPool.front();
		m_queAlgoPool.pop();

		DeleteAlgoObj(fsni);
	}
}

template<typename T>
void FSNIObjPool<T>::AlloAlgoPool()
{
	for (int i=0; i<MINALGOSIZE; i++)
	{
		T *algo = new T();
		algo->InitFaceObj();
		m_queAlgoPool.push(algo);
	}
}

template<typename T>
T* FSNIObjPool<T>::GetAlgoObj()
{
	WaitForSingleObject(m_hAlgoMutex, INFINITE);

	for (int i=0; i<m_queAlgoPool.size(); i++)
	{
		T *fsni = m_queAlgoPool.front();
		m_queAlgoPool.pop();
		ReleaseMutex(m_hAlgoMutex);

		return fsni;
	}

	T *fsni = new T;
	fsni->InitFaceObj();

	ReleaseMutex(m_hAlgoMutex);

	return fsni;
}

template<typename T>
void FSNIObjPool<T>::ReleaseAlgoObj(T *p)
{
	WaitForSingleObject(m_hAlgoMutex, INFINITE);
	m_queAlgoPool.push(p);
	ReleaseMutex(m_hAlgoMutex);
}

template<typename T>
void FSNIObjPool<T>::DeleteAlgoObj(T *obj)
{
	delete obj;
}