Name: akC45999 Date: 09/10/99



public instance method remove(long timeout) described in Java 2
Platform v1.3 Specification, class java.lang.ref.ReferenceQueue, as:

" public Reference remove(long timeout) throws IllegalArgumentException,
                                               InterruptedException
  Removes the next reference object in this queue, blocking until either
  one becomes available or the given timeout period expires.
  Parameters: timeout - If positive, block for up timeout milliseconds
  while waiting for a reference to be added to this queue..."
  
runing on win32 platform sometimes returns in time less than timeout
milliseconds.

The following program returns the following results on the following
platforms and JDK builds:

WinNT HotSpotVM classic VM
jdk1.3O PASS FAIL
jdk1.30E PASS PASS
jdk1.3N PASS PASS

Win98 HotSpotVM classic VM
jdk1.3O FAIL FAIL
jdk1.30E FAIL FAIL
jdk1.3N FAIL FAIL

Win95 HotSpotVM classic VM
jdk1.3O FAIL FAIL
jdk1.30E FAIL FAIL
jdk1.3N FAIL FAIL

Sparc HotSpotVM classic VM
jdk1.3O PASS PASS
jdk1.30E PASS PASS
jdk1.3N PASS PASS

The program sometimes return FAIL runing with jdk1.2 also.
The result PASS means the program was run and returned PASS at
least 5 times.

results on Win95:
C:\TMP\java -version
java version "1.3beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3beta-O)
Java(TM) HotSpot Client VM (build 1.3beta-O, mixed mode)
C:\TMP\java Remove
FAIL, remove=1500000, actually was blocked for 1499790 ms
FAIL, remove=600000, actually was blocked for 599900 ms
FAIL, remove=15000, actually was blocked for 14990 ms
PASS

------------------------------------------------- program code
 import java.lang.ref.*;

 public class Remove {
     public static final long TIMEOUT1 = 1500000l;
     public static final long TIMEOUT2 = 600000l;
     public static final long TIMEOUT3 = 15000l;
     public static final long TIMEOUT4 = 100l;

     public static void main(String[] args) {
         StartRemove(TIMEOUT1);
         StartRemove(TIMEOUT2);
         StartRemove(TIMEOUT3);
         StartRemove(TIMEOUT4);
     }

     public static void StartRemove(long timeout){
         long startTime, timeSuspended;
         try {
         ReferenceQueue queue = new ReferenceQueue();
         startTime = System.currentTimeMillis();

         //empty queue, remove(timeout) blocks for timeout ms
         queue.remove(timeout);

         timeSuspended = System.currentTimeMillis() - startTime;

         if (timeSuspended < timeout) {
             //remove(timeout) was blocked for the time less
             //then timeout milliseconds
             System.out.println("FAIL, timeout=" + timeout +
             ", actually was blocked for " + timeSuspended + "ms");
             return;
         }
         } catch (Throwable e) {
             System.out.println("exception " + e + " was thrown");
             return;
         }
         System.out.println("PASS");
         return;
     }
}//end of class
--------------------------------------------------------------

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Name: akC45999 Date: 09/19/99


The following JCK-13beta test is failed due to this bug:
 api/java_lang/ref/ReferenceQueue/index.html#ReferenceQueue0200


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