Interlocked operations

interlocked.cs

public class Sample
{
  private volatile int counter;

  public void IncrementUnlocked() => this.counter = this.counter + 1;
  
  
  
  
  
  
  
  
  
  
  
  
  
  public void IncrementLocked() { lock (this) { this.counter = this.counter + 1; }
  
  
  
  
  
  
  
  
  
  
  
  
  
  public void IncrementInterlocked1() => Interlocked.CompareExchange(ref this.counter, this.counter + 1, this.counter);
  
  
  
  
  
  
  
  
  public void IncrementInterlocked2() 
  {
     while (Interlocked.CompareExchange(ref this.counter, this.counter + 1, this.counter) != this.counter)) { }
  }
  
  
  
  
  
  
  
  
  
  
  public void IncrementInterlocked3() 
  {
     int oldValue;
     do
     {
        oldValue = this.counter; 
     } while (Interlocked.CompareExchange(ref this.counter, oldCounter + 1, oldCounter) != oldCounter));
  }
}