package org.shetline.SpeedTest001;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class SpeedTestApp extends Applet implements Runnable, ActionListener
{
   private String[]     names = {
                           "double, trig, allocation",
                           "double, trig",
                           "double, allocation",
                           "double",
                           "int",
                           "long"
                        };
   private long[]       times = new long[names.length];
   private Button       restart = new Button("Restart");

   public SpeedTestApp()
   {
      clearTimes();
   }

   private void clearTimes()
   {
      for (int i = 0; i < times.length; ++i)
         times[i] = -1;
   }

   public void init()
   {
      setLayout(new BorderLayout());
      restart.setEnabled(false);
      restart.addActionListener(this);
      add(BorderLayout.SOUTH, restart);

      new Thread(this).start();
   }

   public synchronized void paint(Graphics g)
   {
      int   v;

      for (int i = 0; i < names.length; ++i) {
         v = i * 20 + 20;
         g.drawString(names[i] + ":", 10, v);

         if (times[i] < 0)
            g.drawString("---", 175, v);
         else
            g.drawString(times[i] + " msec", 175, v);
      }
   }

   public void run()
   {
      synchronized (this) {
         clearTimes();
      }

      repaint();

      for (int test = 0; test < times.length; ++test) {
         double   result = 0.0;
         long     start = System.currentTimeMillis();

         switch (test) {
            case 0:
               for (int i = 0; i < 4000000; ++i) {
                  double   z = i / 1000.0;
                  double   x = Math.sin(z);
                  double   y = Math.cos(z);
                  Foo      foo = new Foo(x, y);

                  result += x + y;
               }
               break;

            case 1:
               for (int i = 0; i < 4000000; ++i) {
                  double   z = i / 1000.0;
                  double   x = Math.sin(z);
                  double   y = Math.cos(z);

                  nada(x, y);
                  result += x + y;
               }
               break;

            case 2:
               for (int i = 1; i <= 4000000; ++i) {
                  double   z = i / 1000.0;
                  double   x = z * z + z;
                  double   y = (z - 1000) / z;
                  Foo      foo = new Foo(x, y);

                  result += y / x;
               }
               break;

            case 3:
               for (int i = 1; i <= 4000000; ++i) {
                  double   z = i / 1000.0;
                  double   x = z * z + z;
                  double   y = (z - 1000) / z;

                  nada(x, y);
                  result += y / x;
               }
               break;

            case 4:
               int   total = 0;

               for (int i = 0; i < 40000000; ++i) {
                  total += i;
                  total += (i % 49) / 7;
                  nada(total);
               }

               result = total;
               break;

            case 5:
               long  total2 = 0;

               for (long i = 0; i < 20000000L; ++i) {
                  total2 += i;
                  total2 += (i % 49) / 7;
                  nada(total2);
               }

               result = total2;
               break;
         }

         long  time = System.currentTimeMillis() - start;
         
         synchronized (this) {
            times[test] = time;
         }

         System.out.println("result[" + test + "]: " + result);
         repaint();
      }

      restart.setEnabled(true);
   }

   public void actionPerformed(ActionEvent e)
   {
      if (e.getSource() == restart) {
         restart.setEnabled(false);
         new Thread(this).start();
       }
    }

   private void nada(double x, double y) {}
   private void nada(int x) {}
   private void nada(long x) {}

   private class Foo
   {
      public double  x;
      public double  y;
      
      public Foo(double x, double y)
      {
         this.x = x;
         this.y = y;
      }
   }
}