睡眠理发师问题源码，理发店有一位理发师，一把理发椅和n把用来等候理发的椅子。如果没有顾客，则理发师在理发椅上睡觉，顾客理来时，如理发师闲则理发，否则如有空椅则坐等，没有空椅则离开，编写程序实现理发师和顾客程序，实现进程控制，要求不能出现竞争。-This is a classic problem of IPC, there is a barber barber shop, a barber chair and n barber chair waiting to be used. If there

生产者，消费者线程并发进行，生产者发现缓冲区满了则唤醒消费者，自己睡眠。消费者发现缓冲区空了，唤醒生产者，自己睡眠。-The producer, the consumer thread, producers have found that the buffer is full, wake up the consumers, their sleep. Consumers find the buffer is empty, awaken the producers, their sleep.