Linux进程编程，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。

生产者与消费者之间使用共享内存进行数据传递，并使用信号量对数据的内容进行保护。-The Linux process programming, producer- consumer program group, supports multiple producers and consumers, the the producer process for 2, consumers process 3. Use shared memory for data transfer between producers and consumers, and use semaphores to protect the data.