内存池内存释放问题。。。。

[xuggzu]

有这样一个内存池类：

template <class T,int ALLOC_BLOCK_SIZE=10>
class CMemoryPool
{
public:
    static void* operator new(std::size_t allocLength)
    {
        ASSERT(sizeof(T)==allocLength);
        ASSERT(sizeof(T)>=sizeof(UCHAR*));
        
        if(!mFreePointer)
            allocBlock();
        UCHAR *ReturnPointer=mFreePointer;

        mFreePointer=*reinterpret_cast<UCHAR**>(ReturnPointer);

        return ReturnPointer;
    }
    static void operator delete(void *deletePointer)
    {
        *reinterpret_cast<UCHAR**>(deletePointer)=mFreePointer;
        mFreePointer=static_cast<UCHAR*>(deletePointer);
    }
private:
    static void allocBlock()
    {
        mFreePointer=new UCHAR[sizeof(T)*ALLOC_BLOCK_SIZE];
        UCHAR **Current=reinterpret_cast<UCHAR**>(mFreePointer);
        UCHAR *Next=mFreePointer;

        for(int i=0;i<ALLOC_BLOCK_SIZE;i++)
        {
            Next+=sizeof(T);
            *Current=Next;
            Current=reinterpret_cast<UCHAR**>(Next);
        }
        *Current=0;
    }private:
    static UCHAR *mFreePointer;
protected:    
    ~CMemoryPool() {delete mFreePointer;}
};
template<class T,int ALLOC_BLOCK_SIZE>
UCHAR *CMemoryPool<T,ALLOC_BLOCK_SIZE>::mFreePointer;

使用后由于delete操作符重写了，并没有释放分配的内存。
请教如何释放已分配内存？？？？？？？？？代码怎么写？谢谢！