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 quantities of less than 100 occasions, the memory and CPU overhead is relatively small.