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A user
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 use other device drivers--that is, access the network, talk to a serial port, get interactive input from the user, pop up GUI windows, or read from disks. User-space drivers implemented using FUSD can be much easier to debug it is impossible for them to crash the machine, are easily traceable using tools such as gdb, and can be killed and restarted without rebooting even if they become corrupted. FUSD drivers don t have to be in C--Perl, Python, or any other language that knows how to read from and write to a file descriptor can work with FUSD. User-space drivers can be swapped out, whereas kernel drivers lock physical memory.-A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running comput
- 2022-11-28 07:20:03下载
- 积分：1
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操作系统内存调度例子
操作系统内存调度例子-operating system memory scheduling example
- 2022-01-26 05:27:43下载
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进程调度算法设计
n 进程通过定义一个进程控制块的数据结构（PCB）来表示； n 每个进程需要赋予进程ID、进程到达时间、进程需要运行的总时间的属性； n
- 2022-07-28 02:53:06下载
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这是一个电梯模拟器，使用操作系统的概念叫互斥实现一..
it s a lift simulator, use operating system concept call mutex to implenment a lift. I do it prefectly.-it sa lift simulator, use operating system concept call mutex to implenment a lift. I do it prefectly.
- 2022-01-24 15:55:57下载
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demonstration of the process of how to use the preparation of high
本程序演示了如何利用编写高层应用程序与USB接口通信。有必要了解主机是如何识别USB设备以及USB工作的基本原理。-demonstration of the process of how to use the preparation of high-level application program interface with the USB communication. It is necessary to understand the mainframe is how to identify and USB USB devices to the basic tenets.
- 2022-03-18 20:58:56下载
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读者优先算法
读者优先算法-readers priority algorithm
- 2023-04-20 21:25:04下载
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System Programming source: memory, the buffer zone (Memory/Buffer) treatment, th...
系统编程源码: 内存、缓冲区(Memory/Buffer)处理, 本程序实现CArray摸板类的快速排序
-System Programming source: memory, the buffer zone (Memory/Buffer) treatment, this procedure realize摸板class CArray Quick Sort
- 2022-09-04 09:30:03下载
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UCOS transplantation to the ARM2440, the development board used in Yang
移植uCOS到ARM2440,
所用的开发板扬创的2440板子-UCOS transplantation to the ARM2440, the development board used in Yang
- 2022-02-28 11:05:17下载
- 积分：1
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1 : Prepare a simulation and debugging process scheduling procedures, "Prio...
1、 ：编写并调试一个模拟的进程调度程序，采用“最高优先数优先”调度算法对进程进行调度。 “最高优先数优先调度算法的基本思想是把CPU分配给就绪队列中优先数最高的进程。尝试静态优先数与动态优先数两种方法：
a) 静态优先数是指优先数在整个进程运行期间不再改变。优先数可以在数据输入时指定，也可以根据到达顺序、运行时间确定。
b) 动态优先数是指进程的优先数在创建进程时可以给定一个初始值，并且可以按一定原则修改优先数。例如进程获得一次CPU后就将其优先数减少1。或者进程等待的时间超过某一时限时增加其优先数的值。
2、 编写并调试一个模拟的进程调度程序，模拟实现多级反馈队列调度算法。
3、 编写并调试一个模拟的进程调度程序，模拟实现最低松弛度优先算法。
4、 程序与报告要求：
a) 对上述要求1、2、3，至少要完成一项，鼓励尝试多种算法。
b) 输出结果要尽量详细清晰，能够反映调度后队列变化，PCB内部变化。
c) 可以选择在Windows或Linux环境下编写、运行程序
d) 鼓励使用不同的开发工具在不同平台环境上进行开发比较。
e) 在实验报告中，一方面可以对实验结果进行分析，一方面可以对各种算法进行比较，分析它们的优劣，说明各种算法适用于哪些情况下的调度。
-1 : Prepare a simulation and debugging process scheduling procedures, "Priority number of the highest priority" to the process of scheduling algorithms for scheduling. "Highest priority priority scheduling algorithm for the basic idea is to place the CPU allocated to the priority queue highest process. Taste Examination several static and dynamic priority priority number two methods : a) static priority number is priority
- 2022-03-26 12:38:45下载
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minix操作系统分析
minix操作系统分析-Minix operating system analysis
- 2022-05-18 17:13:24下载
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