如何为我的任务执行添加顺序?

时间:2018-09-11 11:14:23

标签: c# multithreading dining-philosopher

对不起,我的英语不好,非常感谢您的帮助。

我有一个开始我的任务的班级:

Report report = new Report();


        //Fork to left of Plato and right of Galileo.

        Fork fork1 = new Fork(1, report);
        fork1.m_forkMaterial = fork1.GetRandomMaterial();

        //Fork to left of Confucius and right of Plato.
        Fork fork2 = new Fork(2, report);
        fork2.m_forkMaterial = fork1.GetRandomMaterial();

        //Fork to left of Aristotle and right of Confucius.
        Fork fork3 = new Fork(3, report);
        fork3.m_forkMaterial = fork1.GetRandomMaterial();

        //Fork to left of Socrates and right of Aristotle.
        Fork fork4 = new Fork(4, report);
        fork4.m_forkMaterial = fork1.GetRandomMaterial();

        //Fork to right of Socrates and left of Galileo.
        Fork fork5 = new Fork(5, report);
        fork5.m_forkMaterial = fork1.GetRandomMaterial();

        Task platoTask = new Task(() => new Philosopher.Philosopher("Plato", report, fork1, fork2));
        Task confuciusTask = new Task(() => new Philosopher.Philosopher("Confucius", report, fork2, fork3));
        Task aristotleTask = new Task(() => new Philosopher.Philosopher("Aristotle", report, fork3, fork4));
        Task socratesTask = new Task(() => new Philosopher.Philosopher("Socrates", report, fork4, fork5));
        Task galileoTask = new Task(() => new Philosopher.Philosopher("Galileo", report, fork5, fork1));

        platoTask.Start();
        confuciusTask.Start();
        aristotleTask.Start();  
        socratesTask.Start();
        galileoTask.Start();

现在我有一个大问题...我在任务和多线程方面工作很少...

问题:我需要按照将要传递给方法(或构造函数)的顺序执行任务 像这样:

College college = new College(1,2,3,4,5); - it's my seq for start tasks.

我该怎么做?谢谢你的帮助。

更新: 我的哲学家课:

    private Random rng = new Random();
    private Report reportObject;
    private Fork leftFork;
    private Fork rightFork;
    private string Name { get; set; }
    public string Status { get; private set; }

    public Philosopher(string name, Report report, Fork leftFork, Fork rightFork)
    {
        this.Name = name;
        this.reportObject = report;
        this.leftFork = leftFork;
        this.rightFork = rightFork;
        StateTransition();

    }

    public void StateTransition()
    {
        while (true)
        {
            EnterThinkingState();
            Thread.Sleep(3000);
            EnterHungryState();
        }
    }



    public void EnterThinkingState()
    {

        Thread.Sleep(rng.Next(1000) + 1);
        Status = "thinking";
        reportObject.ReceiveMessage(Name + " is " + Status);
        Thread.Sleep(rng.Next(1000) + 1);
    }


    public void EnterHungryState()
    {
        Status = "hungry";
        reportObject.ReceiveMessage(Name + " is " + Status);
        bool leftForkTaken = false;
        bool rightForkTaken = false;
        while (!leftForkTaken && !rightForkTaken)
        {
            if (!leftForkTaken)
            {
                Monitor.TryEnter(leftFork, 1000, ref leftForkTaken);
                if (leftForkTaken)
                {
                    leftFork.ForkAction(Name, Fork.ForkActionTypes.kPickUp);
                }
            }
            if (!rightForkTaken)
            {
                Monitor.TryEnter(rightFork, 1000, ref rightForkTaken);
                if (rightForkTaken)
                {
                    rightFork.ForkAction(Name, Fork.ForkActionTypes.kPickUp);
                }
            }
        }
        EnterEatingState();
        Monitor.Exit(leftFork);
        Monitor.Exit(rightFork);
    }


    public void EnterEatingState()
    {
        Status = "eating";
        reportObject.ReceiveMessage(Name + " is " + Status);
        Thread.Sleep(rng.Next(1000) + 1);
        leftFork.ForkAction(Name, Fork.ForkActionTypes.kPutDown);
        rightFork.ForkAction(Name, Fork.ForkActionTypes.kPutDown);
    }

我的叉子课:

public class Fork
{

        private int id;
        private readonly Report _reportObject;

        public enum ForkMaterial
        {
            kSilver = 0,
            kGold = 1
        }

        public enum ForkActionTypes
        {
            kPickUp = 0,
            kPutDown = 1
        }

        public ForkMaterial m_forkMaterial { get; set; }


        public Fork(int id, Report report)
        {
            this.id = id;
            this._reportObject = report;
        }


        public void ForkAction(string name, ForkActionTypes action)
        {
            String actionName = (action == ForkActionTypes.kPickUp) ? " has been picked up by " : " has been put down by ";
            String materialName = (m_forkMaterial == ForkMaterial.kGold) ? "Gold " : "Silver ";

            _reportObject.ReceiveMessage(materialName + "Fork " + id + actionName + name);
        }

        public ForkMaterial GetRandomMaterial()
        {

            Random random = new Random(Guid.NewGuid().GetHashCode());

            int materialNumber = random.Next(100);

            if (materialNumber <= 50)
            {
                return ForkMaterial.kGold;
            }
            else
            {
                return ForkMaterial.kSilver;
            }
        }

    }

0 个答案:

没有答案