利用缓冲池和多线程技术，实现生产者和消费者同步的问题。只有缓冲池中有空闲的时候才可以生产产品；只有缓冲池有产品的时候才可以消费。-Pool and multi-threading technology to realize the synchronization problem of the producers and consumers. Buffer pool idle time can produce products pool products when it can be consu