如何暂停/挂起一个线程然后继续它？

发布于 2024-08-24 11:40:12 字数 300 浏览 9 评论 0原文

我正在用 C# 制作一个应用程序，它使用 winform 作为 GUI 和一个在后台运行的单独线程，自动更改内容。例如：

public void Run()
{
    while(true)
    {
        printMessageOnGui("Hey");
        Thread.Sleep(2000);
        // Do more work
    } 
}

我如何让它在循环中的任何位置暂停，因为循环的一次迭代大约需要 30 秒。所以我不想在完成一个循环后暂停它，我想按时暂停它。

原文

I am making an application in C# which uses a winform as the GUI and a separate thread which is running in the background automatically changing things. Ex:

public void Run()
{
    while(true)
    {
        printMessageOnGui("Hey");
        Thread.Sleep(2000);
        // Do more work
    } 
}

How would I make it pause anywhere in the loop, because one iteration of the loop takes around 30 seconds. So I wouldn't want to pause it after its done one loop, I want to pause it on time.

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梦醒时光 2024-08-31 11:40:12

var mrse = new ManualResetEvent(false);

public void Run() 
{ 
    while (true) 
    { 
        mrse.WaitOne();
        printMessageOnGui("Hey"); 
        Thread.Sleep(2000); . . 
    } 
}

public void Resume() => mrse.Set();
public void Pause() => mrse.Reset();

var mrse = new ManualResetEvent(false);

public void Run() 
{ 
    while (true) 
    { 
        mrse.WaitOne();
        printMessageOnGui("Hey"); 
        Thread.Sleep(2000); . . 
    } 
}

public void Resume() => mrse.Set();
public void Pause() => mrse.Reset();

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昇り龍 2024-08-31 11:40:12

您应该通过 ManualResetEvent 来执行此操作。

ManualResetEvent mre = new ManualResetEvent();
mre.WaitOne();  // This will wait

在另一个线程上，显然您需要引用 mre

mre.Set(); // Tells the other thread to go again

A 完整示例，它将打印一些文本，等待另一个线程执行某些操作，然后恢复：

class Program
{
    private static ManualResetEvent mre = new ManualResetEvent(false);

    static void Main(string[] args)
    {
        Thread t = new Thread(new ThreadStart(SleepAndSet));
        t.Start();

        Console.WriteLine("Waiting");
        mre.WaitOne();
        Console.WriteLine("Resuming");
    }

    public static void SleepAndSet()
    {
        Thread.Sleep(2000);
        mre.Set();
    }
}

You should do this via a ManualResetEvent.

ManualResetEvent mre = new ManualResetEvent();
mre.WaitOne();  // This will wait

On another thread, obviously you'll need a reference to the mre

mre.Set(); // Tells the other thread to go again

A full example which will print some text, wait for another thread to do something and then resume:

class Program
{
    private static ManualResetEvent mre = new ManualResetEvent(false);

    static void Main(string[] args)
    {
        Thread t = new Thread(new ThreadStart(SleepAndSet));
        t.Start();

        Console.WriteLine("Waiting");
        mre.WaitOne();
        Console.WriteLine("Resuming");
    }

    public static void SleepAndSet()
    {
        Thread.Sleep(2000);
        mre.Set();
    }
}

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