手痒痒,也来个c# 2.0 object pool

看到 http://www.cnblogs.com/teddyma/archive/2006/01/11/315158.html写了个object pool,心痒痒的,也跟着写了个.
其实这是我以前用vs2003写的代码,现在修改为c#2.0
不过对一些简单的对象还是建议不要用object pool,用了效果还比不上new.

  class  ObjectPool < T >
    {
        PoolItem < T >  m_Cur;
         public  ObjectPool()
        {
        }
         public  T GetNew()
        {
             lock  ( this )
            {
                 if  ( null   ==  m_Cur)
                {
                     return  System.Activator.CreateInstance < T > ();
                }
                 else
                {
                    T ret  =  m_Cur.Next.PoolObject;
                    m_Cur  =  m_Cur.Next;
                     return  ret;
                }
            }
        }
         public   void  Free(T o)
        {
             lock  ( this )
            {
                 if  ( null   ==  m_Cur)
                {
                    m_Cur  =   new  PoolItem < T > (o);
                }
                 else
                {
                    m_Cur.Next  =   new  PoolItem < T > (o);
                }
            }
        }
         class  PoolItem < TT >
        {
             public  PoolItem(TT o) { PoolObject  =  o; }
             public  TT PoolObject;
             public  PoolItem < TT >  Next;
        }