int main() {
	int num_iterations = 300000000;
	Profiler p;
	
	Interface ob1_interface = new Object1(0);
	p = new Profiler("Object1 through interface");
	for(int i = 0; i <= num_iterations; i++) {
		ob1_interface.add(i);
	}
	p = null;
	Object1 ob1_directly = new Object1(0);
	p = new Profiler("Object1 directly         ");
	for(int i = 0; i <= num_iterations; i++) {
		ob1_directly.add(i);
	}
	p = null;
	Interface ob2_interface = new Object2(0);
	p = new Profiler("Object2 through interface");
	for(int i = 0; i <= num_iterations; i++) {
		ob2_interface.add(i);
	}
	p = null;
	Object2 ob2_directly = new Object2(0);
	p = new Profiler("Object2 directly         ");
	for(int i = 0; i <= num_iterations; i++) {
		ob2_directly.add(i);
	}
	p = null;
	stdout.printf("----------------------------------------\n");
	return 0;
}

public interface Interface : Object {
	public abstract void add(int i);
}
public abstract class AbsObject : Interface, Object {
	public abstract void add(int i);
}

public class Object1 : Interface, Object {
	private int val;
	
	public Object1(int i) {
		this.val = i;
	}	
	public void add(int i) {
		this.val += i;
	}
}
public class Object2 : AbsObject {
	private int val;
	
	public Object2(int i) {
		this.val = i;
	}	
	public override void add(int i) {
		this.val += i;
	}
}


public class Profiler {
	private string description;
	private Timer t;
	
	public Profiler(string description) {
		this.description = description;
		t = new Timer();
		t.start();
	}
	~Profiler() {
		t.stop();
		stdout.printf("%s : %lf\n", description, t.elapsed());
	}
}