生产者与消费者：编写一个生产者－消费者程序组，支持多个生产者和消费者，生产者进程数为2， 消费者进程数为3。 -Producers and consumers: the preparation of a producer- consumer program group, supports multiple producers and consumers, producers for the two processes, the consumer process is 3.

生产者与消费者问题模型,在linux操作系统下，创建两个进程一个进程作为生产者，另一个作为消费者。-Producer and consumer issues model