C++代写 COMP 3511 Operating Syste

Introduction示范代码：boolScheduler::ShouldISwitch ( Thread oldThread, Thread newThread ){bool doSwitch;switch(policy){case SCHED_FCFS:{doSwitch = false;break;}case SCHED_SJF:{//YOUR PROJECT2 CODE HEREdoSwitch = false;break;}case SCHED_PRIO_NP:{//YOUR PROJECT2 CODE HEREdoSwitch = false;break;}default:doSwitch = false;break;}return doSwitch;}RequirementCOMP 3511Operating SystemsProject #2Objectives and Tasksn Run Nachos with Pre-implemented SchedulingSystem Skeletonn Implement SJF and Non-preemptive PriorityScheduling Algorithmsn Explain the ResultsYou are strongly recommended to use the servers inthis lab for this project.ssh username@csl2wk01(~csl2wk40).cse.ust.hkTask 1n Task 1: Run Nachos with Pre-implementedScheduling System Skeletonn Step 1: Download Nachos source code of this projectn Step 2: Extract the source coden Step 3: Compile the coden Step 4: Run nachosn Step 5: Read the codeTask 1n Three scheduling algorithmsn First Come First Serve (FCFS)n Shortest Job First (SJF)n Non-Preemptive Priority (NP_Priority)Executable File Source FileCorrespondingAlgorithmAlreadyImplemented?test0 test.0.cc FCFS Yestest1 test.1.cc SJF Notest2 test.2.cc NP_Priority NoTask 1n Read the codes (threads/scheduler.cc)n ReadyToRun()n placing a thread into ready queuen FindNextToRun()n decides the policy of picking one thread to run from theready queuen ShouldISwitch()n whether the running thread should preemptively give upto a newly forked threadTask 2n Implement SJF and NP_Priorityn Only modify scheduler.ccn Scheduler::ReadyToRunn Scheduler::FindNextToRunn Scheduler::ShouldISwitchTask 2n Shortest Job Firstn the thread with the shortest burst time in the ReadyListshould be scheduled for running after the currentthread is done with burst.n Return first thread when scheduler needs to pick onethread to runn Hint: insert the thread to ReadyList according to itsburst time when a thread gets ready.n Make use of the function SortedInsert() in List.ccn Example:list->SortedInsert(thread,thread->getBurstTime());this line of code insert the thread into the list basedon its burst time.Task 2n Non-Preemptive Priority Schedulingn the thread with the highest priority in the ReadyListshould be scheduled for running after the currentthread is done with burst.n Return first thread when scheduler needs to pick onethread to runn Hint: insert the thread to ReadyList according to itspriority when a thread gets ready.n Make use of the function SortedInsert() in List.ccn Take care of the order!Task 2n Compile and Runn Save your outputs to project2_test1.txt andproject2_test2.txt, respectively,n Keep your source code scheduler.ccTask 3n Explain the Results1. Understand the output of test0 (FCFS scheduling) , test1 (SJFscheduling) and test2 (NPPriority). Then calculate the followingperformance metrics of each scheduling algorithms:a) Average waiting time;b) Average response time;c) Average turn-around time.2. Compare the performance among the first two scheduling algorithms(FCFS and SJF) in the aspects mentioned in question 1, then discussthe pros and cons of each scheduling algorithms. (Note: you arestrongly encouraged to change the input threads in test.0.cc andtest.1.cc in order to make your discussion more convincing. However,when submitting the outputs of test1, please do submit the outputs withthe original input threads.)Outputsn Please generate a single file using ZIP and submit it throughCASSn Name of the ZIP: “proj2**.zip” (* as student ID)n Inside the ZIP file:File Name Descriptionscheduler.ccSource code you have accomplished bythe end of Task2project2_test1.txt Output of test1project2_test2.txt Output of test2project2_report.txt The answer to the questions in Task 3本团队核心人员组成主要包括BAT一线工程师，精通德英语！我们主要业务范围是代做编程大作业、课程设计等等。我们的方向领域：window编程 数值算法 AI人工智能 金融统计 计量分析 大数据 网络编程 WEB编程 通讯编程 游戏编程多媒体linux 外挂编程 程序API图像处理 嵌入式/单片机 数据库编程 控制台 进程与线程 网络安全 汇编语言 硬件编程 软件设计 工程标准规等。其中代写编程、代写程序、代写留学生程序作业语言或工具包括但不限于以下范围:C/C++/C#代写Java代写IT代写Python代写辅导编程作业Matlab代写Haskell代写Processing代写Linux环境搭建Rust代写Data Structure Assginment 数据结构代写MIPS代写Machine Learning 作业 代写Oracle/SQL/PostgreSQL/Pig 数据库代写/代做/辅导Web开发、网站开发、网站作业ASP.NET网站开发Finance Insurace Statistics统计、回归、迭代Prolog代写Computer Computational method代做因为专业，所以值得信赖。如有需要，请加QQ：99515681 或邮箱：99515681@qq.com 微信：codehelp