操作系统读者和写者进程：

1-按优先级运行一个读者进程 2-按优先级运行一个写者进程 3-输出所有进程 4-撤销运行的进程 5-唤醒一个阻塞的进程 6-创建进程 -Operating system readers and writing process: 1- run a reader process priority 2- by priority run a write by process 3- output all processes- Revocation of running processes- the wake a blocking process- creating process