Use Wait() and Pulse() to create a ticking clock : Monitor « Thread « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Thread
3. Monitor

//C# 2.0 The Complete Reference

using System; 
using System.Threading; 

class TickTock { 
  public void tick(bool running) { 
    lock(this) { 
      if(!running) { // stop the clock 
        Monitor.Pulse(this); // notify any waiting threads 
        return; 
      } 
 
      Console.Write("Tick "); 
      Monitor.Pulse(this); // let tock() run 

      Monitor.Wait(this); // wait for tock() to complete 
    } 
  } 
 
  public void tock(bool running) { 
    lock(this) { 
      if(!running) { // stop the clock 
        Monitor.Pulse(this); // notify any waiting threads 
        return; 
      } 
 
      Console.WriteLine("Tock"); 
      Monitor.Pulse(this); // let tick() run 
 
      Monitor.Wait(this); // wait for tick() to complete 
    } 
  } 
}  
 
class MyThread { 
  public Thread thrd; 
  TickTock ttOb; 
 
  // Construct a new thread. 
  public MyThread(string name, TickTock tt) { 
    thrd = new Thread(this.run); 
    ttOb = tt; 
    thrd.Name = name; 
    thrd.Start();  
  } 
 
  // Begin execution of new thread. 
  void run() { 
    if(thrd.Name == "Tick") { 
      for(int i=0; i<5; i++) ttOb.tick(true); 
      ttOb.tick(false); 
    } 
    else { 
      for(int i=0; i<5; i++) ttOb.tock(true); 
      ttOb.tock(false); 
    } 
  } 
} 
 
class TickingClock { 
  public static void Main() { 
    TickTock tt = new TickTock(); 
    MyThread mt1 = new MyThread("Tick", tt); 
    MyThread mt2 = new MyThread("Tock", tt); 
 
    mt1.thrd.Join(); 
    mt2.thrd.Join(); 
    Console.WriteLine("Clock Stopped"); 
  } 
}

Tick Tock
Tick Tock
Tick Tock
Tick Tock
Tick Tock
Clock Stopped