import java.util.Random;
import java.util.Arrays;

public class CountBench {
	
	public static void main(String... args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, InterruptedException {
		Class<? extends VehicleCounter> counterClass = Class.forName(args[0]).asSubclass(VehicleCounter.class);
		Vehicle[] vehicles = new Vehicle[1024 * 1024];
		Random rnd = new Random(34928490398L);
		int numCars = 0;
		int numBikes = 0;
		int numMotorbikes = 0;
		for (int i = 0; i < vehicles.length; ++i) {
			switch (rnd.nextInt(3)) {
				case 0: {
					vehicles[i] = new Car();
					++numCars;
				} break;
				case 1: {
					vehicles[i] = new Bike();
					++numBikes;
				} break;
				case 2: {
					vehicles[i] = new Motorbike();
					++numMotorbikes;
				} break;
			}
		}
		for (int i = 0; i < 100; ++i) {
			benchmark(counterClass.newInstance(), vehicles, numCars, numBikes, numMotorbikes);
		}
		long[] times = new long[101];
		System.gc();
		Thread.sleep(100);
		for (int i = 0; i < times.length; ++i) {
			times[i] = benchmark(counterClass.newInstance(), vehicles, numCars, numBikes, numMotorbikes);
		}
		System.out.println(counterClass.getName());
		Arrays.sort(times);
		System.out.println("min: " + times[0]);
		System.out.println("med: " + times[times.length / 2]);
		System.out.println("95%: " + times[(int)(times.length * 0.95)]);
		System.out.println("max: " + times[times.length - 1]);
	}
	
	public static long benchmark(VehicleCounter counter, Vehicle[] vehicles, int numCars, int numBikes, int numMotorbikes) {
		long t0 = System.nanoTime();
		counter.count(vehicles);
		long t1 = System.nanoTime();
		if (counter.getNumCars() != numCars) throw new RuntimeException("bad car count: expected " + numCars + ", got " + counter.getNumCars());
		if (counter.getNumBikes() != numBikes) throw new RuntimeException("bad bike count: expected " + numBikes + ", got " + counter.getNumBikes());
		if (counter.getNumMotorbikes() != numMotorbikes) throw new RuntimeException("bad motorbike count: expected " + numMotorbikes + ", got " + counter.getNumMotorbikes());
		return t1 - t0;
	}
	
}