C#_Java_performance_test

Program.cs

  class Program
  {

    public interface I
    {

      void Do();

    }


    public class C : I
    {

      private long number;

      public void Do()
      {
        number++;
      }
    }
    public struct S : I
    {

      private long number;

      public void Do()
      {
        number++;
      }
    }


    static void Main( string[] args )
    {


      var watch = new Stopwatch();
      var instance = (I) new C();

      watch.Start();
      for ( long i = 0; i < 10_0000_0000; i++ )
      {
        instance.Do();
      }
      watch.Stop();

      Console.WriteLine( $"Test I(C): {watch.ElapsedMilliseconds}" );

      instance = (I) new S();
      watch.Restart();
      for ( long i = 0; i < 10_0000_0000; i++ )
      {
        instance.Do();
      }
      watch.Stop();

      Console.WriteLine( $"Test I(S): {watch.ElapsedMilliseconds}" );


      var c = new C();
      watch.Restart();
      for ( long i = 0; i < 10_0000_0000; i++ )
      {
        c.Do();
      }
      watch.Stop();

      Console.WriteLine( $"Test C: {watch.ElapsedMilliseconds}" );


      var s = new S();
      watch.Restart();
      for ( long i = 0; i < 10_0000_0000; i++ )
      {
        s.Do();
      }
      watch.Stop();

      Console.WriteLine( $"Test S: {watch.ElapsedMilliseconds}" );

    }
  }