一个用新方法实现的堆管理器，可以在多任务环境下运行。它的特点是适合于分配片数比较少，如少于100片时的场合，对于内存和CPU的额外开销比较少。-a new method of inspiring manager, can multi-task operating environment. Its characteristics are suitable for distribution in the relatively small number of films, such as quanti