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A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running computation, block while waiting for an event, or read files from the file system. Unlike kernel drivers, a user-space device driver can us

本模拟程序实现对n个进程根据优先权的高低调度的模拟，创建进程描述符PCB，进程的优先权在运行过程中动态改变，每个时间片结束后显示当前各进程的状态。-The simulation program according to the process of the n analog low priority scheduling, to create the process descr iptor PCB, dynamically change the priority of the process d