public static extern CLError clGetCommandQueueInfo( CLCommandQueue command_queue, CLCommandQueueInfo param_name, SizeT param_value_size, IntPtr param_value, ref SizeT param_value_size_ret);
internal static extern CLError clGetCommandQueueInfo(CLCommandQueue command_queue, CLCommandQueueInfo param_name, SizeT param_value_size, IntPtr param_value, ref SizeT param_value_size_ret);