Mutex

using System;//j  a v a 2 s  .co  m
using System.Threading;

class MainClass
{
    public static void Main()
    {
        bool ownsMutex;

        using (Mutex mutex =new Mutex(true, "MutexExample", out ownsMutex))
        {
            if (ownsMutex)
            {
                Console.WriteLine("Owned");
                mutex.ReleaseMutex();
            }
            else
            {
                Console.WriteLine("Another instance of this application " +
                    " already owns the mutex named MutexExample.");
            }
        }
    }
}

using System;/*from  j a v  a 2 s  .c  om*/
using System.Collections;
using System.Threading;

class MainClass 
{
  public static ArrayList MyList = new ArrayList();

  private static Mutex MyMutex = new Mutex(false, "MyMutex");

  static void Main(string[] args)
  {
      Thread ThreadOne = new Thread(new ThreadStart(MutexExample));
    ThreadOne.Start();
  }
  protected static void MutexExample()
  {
    MyMutex.WaitOne();
    MyList.Add(" a value");
    MyMutex.ReleaseMutex();
  }
}

using System;  //from  j  ava2s .  co m
using System.Threading;  
 
class MyCounter { 
  public static int count = 0; 
  public static Mutex MuTexLock = new Mutex(); 
} 
 
class IncThread {  
  public Thread thrd;  
  
  public IncThread() {  
    thrd = new Thread(this.run);  
    thrd.Start();  
  }  
  
  void run() {  
    Console.WriteLine("IncThread is waiting for the mutex."); 
 
    MyCounter.MuTexLock.WaitOne(); 
 
    Console.WriteLine("IncThread acquires the mutex."); 
    
    int num = 10;
    do {  
      Thread.Sleep(50);  
      MyCounter.count++;  
      Console.WriteLine("In IncThread, MyCounter.count is " + MyCounter.count);  
      num--; 
    } while(num > 0);  
  
    Console.WriteLine("IncThread releases the mutex.");   
 
    MyCounter.MuTexLock.ReleaseMutex(); 
  }  
}  
 
class DecThread {  
  public Thread thrd;  
  
  public DecThread() {  
    thrd = new Thread(new ThreadStart(this.run));  
    thrd.Start();  
  }  
  
  void run() {  
    Console.WriteLine("DecThread is waiting for the mutex."); 
 
    MyCounter.MuTexLock.WaitOne(); 
 
    Console.WriteLine("DecThread acquires the mutex."); 
 
    int num = 10;
    do {  
      Thread.Sleep(50);  
      MyCounter.count--;  
      Console.WriteLine("In DecThread, MyCounter.count is " + MyCounter.count);  
      num--; 
    } while(num > 0);  
  
    Console.WriteLine("DecThread releases the mutex.");  
 
    MyCounter.MuTexLock.ReleaseMutex(); 
  }  
}  
  
class MainClass {  
  public static void Main() {  
    IncThread mt1 = new IncThread();  
    DecThread mt2 = new DecThread();  
  
    mt1.thrd.Join(); 
    mt2.thrd.Join(); 
  }  
}