using System;
using System.Threading;

class LockPerf {
	
	static object [] work_items = new object [] {
		new object (), 
		new object (), 
		new object (), 
		new object (), 
		new object ()
	};
	
	
	static void Main (string [] args)
	{
		int lock_threads = int.Parse (args [0]);
		int other_threads = int.Parse (args [1]);
		
		for (int i = 0; i < other_threads; i ++) {
			Thread t = new Thread (new ThreadStart (OtherWorkThread));
			t.IsBackground = false;
			t.Start ();
		}
		
		for (int i = 0; i < lock_threads; i ++) {
			Thread t = new Thread (new ThreadStart (LockThread));
			t.IsBackground = false;
			t.Start ();
		}
	}
	
	static void Work (object o)
	{
		const double dx = .01;
		double area = 0;
		
		lock (o) {
			for (double x_i = 0; x_i < 1; x_i += dx)
				area += Math.Sin (x_i) * dx;
			
			if (area == 0)
				Console.WriteLine ("dummy test");
		}
	}
	
	static void LockThread ()
	{
		for (int i = 0; i < 10000; i ++) {
			foreach (object o in work_items)
				Work (o);
		}
	}
	
	static void OtherWorkThread ()
	{
		for (int i = 0; i < 100; i ++) {
			const double dx = .0001;
			double area = 0;
		
			for (double x_i = 0; x_i < 1; x_i += dx)
				area += Math.Sin (x_i) * dx;
			
			if (area == 0)
				Console.WriteLine ("dummy test");
		}
	}
}