test/hotspot/jtreg/vmTestbase/gc/gctests/gctest02/gctest02.java

rev 59093 : [mq]: randomness-code_vmTestbase_gc

*** 38,47 ****
--- 38,49 ----
  
  package gc.gctests.gctest02;
  
  import nsk.share.TestFailure;
  import nsk.share.TestBug;
+ import nsk.share.test.LocalRandom;
+ 
  /*  stress testing
   create 16 memory evil threads requesting to allocate
   the object of sizes from 8 to ( 2 ^ 19).
   The live time of objects is random (0 ~ 1000).
   Here we let the threads that reference the objects
*** 53,76 ****
  class PopulationException extends Exception {
      //this exception is used to signal that we've
      //reached the end of the test
  }
  
- //the LocalRandom class is used to isolate the pseudo-random
- //number generator from other parts of the system which might
- //silently be using it.
- //This is to make sure the tests are repeatable
- 
- class LocalRandom {
-     public static Random rGen = null;
- 
-     public static double random() {
-         //should fail if rGen is not initialized
-         return rGen.nextDouble();
-     }
- }
- 
  class ThreadCount {
      static int count= 0;
      static synchronized void inc() { count++; }
      static synchronized void dec() { count --; }
      static synchronized int get() { return count; }
--- 55,64 ----
*** 188,198 ****
  
  public class gctest02 {
          public static void main(String args[] ) {
                  int bufsz = 8;
                  int peopleLimit = 1000;
-                 long randomSeed = System.currentTimeMillis();
                  Memevil me=null;
                  if (args.length > 0)
                  {
                          try
                          {
--- 176,185 ----
*** 204,231 ****
                                          "Bad input to gctest02. Expected integer, got: ->"
                                          + args[0] + "<-", e);
                          }
                  }
  
-                 if (args.length == 2)
-                 {
-                         try
-                         {
-                                 randomSeed = new Long(args[1]).longValue();
-                         }
-                         catch (NumberFormatException e)
-                         {
-                                 throw new TestBug(
-                                         "Bad input to gctest02. Expected long, got: ->"
-                                         + args[0] + "<-", e);
-                         }
-                 }
                  Person.setPopulationLimit(peopleLimit);
-                 System.out.println("Seed value: " + randomSeed);
                  for (int ii=0; ii<40; ii++) {
                          bufsz = 8;
-                         LocalRandom.rGen = new Random(randomSeed);
                          Person.populationCount = 0;
                          Escaper you = new Escaper();
                          you.setName("Escaper");
                          ThreadCount.inc();
                          you.start();
--- 191,203 ----