演示操作系统中生产者与消费者问题的解法，在多道程序和多任务系统中，系统内同时处于就绪状态的进程可能有若干个。也就是说能运行的进程数大于处理机个数。为了使系统中的进程能有条不紊地工作，必须选用某种调度策略，选择一进程占用处理机。设计一个模拟处理机调度算法，实现处理机调度。-Demonstration in the operating system Problem of producers and consumers, in the multi-channel programs and multi-tasking system, the system in a state of readiness within the same process may have several. That is the number of running processes can be greater than the number of processors. To make the process of the system can orderly work, we must use some kind of scheduling policy, select a process consumes processor. Design a simulation processor scheduling algorithm to achieve processor scheduling.