说明：  多线程应用程序设计。生产者线程不断顺序地吧0－1000的数字写入共享的循环缓冲区，同时消费者线程不断地共享地循环缓冲区读取数据。
(Multi-threaded application design. The producer thread to keep the order you write the number 0-1000 shared buffer cycle, while consumers continue to share the thread to read data buffer cycle.)