[jboss-cvs] JBossCache/tests/perf/org/jboss/cache/manualtests ...

[Manik Surtani]

  User: msurtani
  Date: 07/02/02 11:34:23

  Added:       tests/perf/org/jboss/cache/manualtests 
                        HashMapConcurrencyTest.java
  Log:
  experiment
  
  Revision  Changes    Path
  1.1      date: 2007/02/02 16:34:23;  author: msurtani;  state: Exp;JBossCache/tests/perf/org/jboss/cache/manualtests/HashMapConcurrencyTest.java
  
  Index: HashMapConcurrencyTest.java
  ===================================================================
  package org.jboss.cache.manualtests;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Random;
  import java.util.concurrent.CountDownLatch;
  
  public class HashMapConcurrencyTest
  {
     private static final int T = 100;
     private static final int N = 1000;
     private static final Random R = new Random();
     private static final CountDownLatch latch = new CountDownLatch(1);
     private static final Map map = new HashMap();
  
     public static void main(String[] args)
     {
        Thread[] threads = new Thread[T];
        for (int i = 0; i < T; i++)
        {
           threads[i] = new Thread()
           {
              public void run()
              {
                 try
                 {
                    latch.await();
                    for (int j = 0; j < N; j++)
                    {
                       if (R.nextInt() % 2 == 0)
                       {
                          map.get("key");
                       }
                       else
                       {
                          map.put("key", "value");
                       }
                    }
                 }
                 catch (Exception e)
                 {
  
                 }
              }
           };
           threads[i].start();
        }
  
        latch.countDown();
  
        for (int i = 0; i < T; i++)
        {
           try
           {
              threads[i].join();
           }
           catch (InterruptedException e)
           {
           }
        }
     }
  }