本文从信号量、管程和消息传递三个方面讨论了进程间的同步问题，并分别给出了关于生产者/消费者问题的解决算法，最终还分析了以上三种方法的优缺点。-signal from the amount of paper tube and messaging three discussed the process of synchronization and were given on the producer / consumer problem solving algorithm, ultimately analysis of the above three methods are discussed.