public static ProcessingQQLoginLogoutList <T> GetInstance()
 {
     if (instanceQQ == null)
     {
         GC.Collect(); //强制进行资源释放
         lock (_lock)
         {
             if (instanceQQ == null)
             {
                 instanceQQ = new ProcessingQQLoginLogoutList <T>();
             }
         }
     }
     return(instanceQQ);
 }