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lab1
JOS LAB1 试验报告,操作系统实习mit.6.828(JOS LAB1 Test Report)
- 2010-06-27 01:30:48下载
- 积分:1
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zhiyuanguanlixitong
操作系统课程设计
资源管理系统
safe() //用银行家算法判定系统是否安全
do{
printf("
*****输入要进行的操作 1:分配资源 2: 修改资源 3:显示资源 4:离开*****")
scanf("%d",&choice) (courses on operating system design resource management system safe ()// algorithm with bankers determine whether the safety system do (printf ( " n***** input to the operation of a : 2 distribution of resources : 3 amend resources : resources four shows : left*****") Scanf ( "% d",)
- 2007-06-15 18:54:11下载
- 积分:1
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33
说明: 作业调度——先来先服务,最短作业优先,最高响应比优先(Job scheduling- a first-come first-served, shortest job first, highest priority response ratio)
- 2011-07-01 19:41:37下载
- 积分:1
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FIFOLRU
1.虚拟存储器的引入
局部性原理:程序在执行时在一较短时间内仅限于某个部分;相应的,它所访问的存储空间也局限于某个区域,它主要表现在以下两个方面:时间局限性和空间局限性。
2.虚拟存储器的定义
虚拟存储器是只具有请求调入功能和置换功能,能从逻辑上对内存容量进行扩充的一种存储器系统
(1. The introduction of virtual memory locality principle: program execution in a relatively short period of time limited to a particular part of it Accordingly, it has access to the storage space is also limited to a particular region, it is mainly manifested in the following two aspects: the time limitations and space limitations. 2. The definition of virtual memory Virtual memory is just a request for redeployment of functions and displacement functions, from the logical to expand the memory capacity of a memory system)
- 2010-01-08 15:10:19下载
- 积分:1
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zhexuejia
哲学家用筷子的问题,能够直接执行在u-cos环境下(Philosopher with chopsticks, able to direct the implementation of the u-cos environment)
- 2012-11-30 12:11:56下载
- 积分:1
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banker_by_array
说明: 本程序为自己在学习操作系统时独立根据书上所述的银行家算法制作而成,包括一个数组输入函数(Sr()),数组输出函数(Pr())和一个判断函数(test()),并通过指针传递参数,可以自定义进程数目和资源种类数目(源程序限10个以内,可自行更改数组)。
注:本程序是在linux环境下通过gcc编译器编译成功的。若移植到windows环境下可能在汉字显示部分出现乱码。(This procedure for their own independence in learning, when the operating system on the basis of the book described in banker s algorithm produced, including an array of input function (Sr ()), array output function (Pr ()) and a judging function (test () ), and through pointer parameters, the process can customize the number and type of the number of resources (source 10 within limits, can make changes to the array). Note: This procedure is in the linux environment through the gcc compiler to compile successful. If transplanted into windows environment may display garbled characters.)
- 2008-11-15 01:20:10下载
- 积分:1
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69785645
对于iOS调标签类别,精选ios编程学习,很好的参考资料。(For the iOS label category, select the IOS programming learning, a good reference.)
- 2013-12-08 10:42:44下载
- 积分:1
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6875
简单写字板,精选ios编程学习源码,很好的参考资料。(Simple WordPad, selection of learning IOS programming source code, a good reference.)
- 2013-12-13 17:01:37下载
- 积分:1
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6875
简单写字板,精选ios编程学习源码,很好的参考资料。(Simple WordPad, selection of learning IOS programming source code, a good reference.)
- 2013-12-13 17:01:37下载
- 积分:1
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Storage_Simulator0001
在采用多道程序设计的系统中,往往有若干个进程同时处于就绪状态。当就绪进程个数大于处理机数时,就必须依照某种策略来决定哪些进程优先占用处理机。本实验模拟在单处理机情况下的处理机调度,帮助学生加深了解处理机调度的工作。
二、实验类型
设计型。
三、预习内容
预习课本处理机调度有关内容,包括进程占用处理机的策略方法。
四、实验要求与提示
设计进程调度算法,进程数不定;包含几种调度算法,并加以实现;输出进程的调度过程——进程的状态、链表等。要求使用优先权法和轮转法模拟进程调度过程。
【提示】:简化假设
1) 进程为计算型的(无I/O)
2) 进程状态:ready、running、finish
3) 进程需要的CPU时间以时间片为单位确定
【提示】:算法描述
1) 优先权法——动态优先权,当前运行进程用完时间片后,其优先权减去一个常数。
2) 轮转法
(err)
- 2008-06-12 19:04:46下载
- 积分:1