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  1. JDK
  2. JDK-4268325

JCK1.3 api/java_lang/ref/PhantomReference/index.html#PhantomReference0600 failed

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    • Subcomponent:
    • CPU:
      sparc
    • OS:
      solaris_2.6

      Description

      The JCK13 test api/java_lang/ref/PhantomReference/index.html#PhantomReference0600
      failed in the build (JDK1.3-"N" was used)

      JTR file:
      #Test Results (version 2)
      #Fri Aug 20 20:36:29 PDT 1999
      #-----testdescription-----
      executeArgs=-TestCaseID ALL
      executeClass=javasoft.sqe.tests.api.java.lang.ref.PhantomReference.GCEnqueueingTests
      file=/net/novo35/opt/build13/jck13-tests-build/unzip/JCK-runtime-13beta/tests/api/java_lang/ref/PhantomReference/index.html
      id=PhantomReference0600
      keywords=api positive runtime
      source=GCEnqueueingTests.java
      testsuite=/net/novo35/opt/build13/jck13-tests-build/unzip/JCK-runtime-13beta/tests
      timeout=3000
      title=PhantomReference GC enqueueing

      #-----testresult-----
      description=file:/net/novo35/opt/build13/jck13-tests-build/unzip/JCK-runtime-13beta/tests/api/java_lang/ref/PhantomReference/index.html#PhantomReference0600
      end=Fri Aug 20 20:36:29 PDT 1999
      environment=jck-runtime-solaris
      execStatus=Failed. tests: 8; passed: 7; failed: 1; first test case failure: PhantomReference0605
      javatestVersion=JT_2.1k
      script=javasoft.sqe.javatest.lib.JCKScript -runtime
      sections=script_messages testExecute
      start=Fri Aug 20 20:36:24 PDT 1999
      status=Failed. tests: 8; passed: 7; failed: 1; first test case failure: PhantomReference0605
      test=api/java_lang/ref/PhantomReference/index.html#PhantomReference0600
      timeoutSeconds=3000
      work=/net/novo35/opt/build13/jck13-tests-build/test/JCK-runtime-13beta/runtime-batch-multiJVM-jit-native/work/api/java_lang/ref/PhantomReference

      #section:script_messages
      ----------messages:(1/24)----------
      Executing test class...

      #section:testExecute
      ----------messages:(1/499)----------
      command: javasoft.sqe.javatest.lib.ExecJCKTestOtherJVMCmd CLASSPATH=/net/novo35/opt/build13/jck13-tests-build/unzip/JCK-runtime-13beta/tests/../classes:/net/novo35/opt/build13/jck13-tests-build/unzip/JCK-runtime-13beta/javatest.jar DISPLAY=novo35:0.0 HOME=/home/kuzm LD_LIBRARY_PATH=/net/novo35/opt/build13/jck13-tests-build/unzip/JCK-runtime-13beta/tests/../lib /opt/build13/jdk1.3/N/solaris/bin/java -Xfuture javasoft.sqe.tests.api.java.lang.ref.PhantomReference.GCEnqueueingTests -TestCaseID ALL
      ----------ref:(0/0)----------
      ----------log:(10/427)----------
      args decoded
      PhantomReference0601: Passed. OKAY
      PhantomReference0602: Passed. OKAY
      PhantomReference0603: Passed. OKAY
      PhantomReference0604: Passed. OKAY
      PhantomReference0605: Failed. PhantomRef was enqueued by GC but poll()==null
      PhantomReference0606: Passed. OKAY
      PhantomReference0607: Passed. OKAY
      PhantomReference0608: Passed. OKAY
      STATUS:Failed.tests: 8; passed: 7; failed: 1; first test case failure: PhantomReference0605
      result: Failed. tests: 8; passed: 7; failed: 1; first test case failure: PhantomReference0605


      test result: Failed. tests: 8; passed: 7; failed: 1; first test case failure: PhantomReference0605

      Name: akC45999 Date: 09/06/99


      After GC enqueues PhantomReference created with queue
      the methods enqueue() and poll() sometimes return
      wrong values.

      Java Platform 1.3 API Specification says:
      "If the garbage collector determines at a certain point in time
      that the referent of a phantom reference is phantom reachable, then
      at that time or at some later time it will enqueue the reference."

      According to the specification after GC enqueues the PhantomReference
      object created with queue (i.e. isEnqueued() returns true) the
      method enqueue() should return false. The method poll() applied to
      the queue in turn should return PhantomReference object enqueued.

      But the following code shows that sometimes enqueue() returns true
      and poll() returns null.

      The bug appears in JDK1.3-"M", JDK1.3-"N", JDK1.3-"O"
      - only on Sparc, HotSpot VM

      novo81% 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-release,
      1.3beta-O-release, interpreted mode)
      novo81% java PhantomRef
      WRONG: enqueue() returned true instead of false
      OKAY
      novo81% java PhantomRef
      WRONG: enqueue() returned true instead of false
      WRONG: poll() returned null instead of refPhantom enqueued
      novo81%

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

       public class PhantomRef {
           public static void main(String args[]){
               PhantomRef1();
               PhantomRef2();
           }

       //the method enqueue() returns wrong value
       public static void PhantomRef1() {
              ReferenceQueue queue = new ReferenceQueue();
              PhantomReference refPhantom = new PhantomReference(new Object(), queue);
              System.gc();
              long startTime = System.currentTimeMillis();
              while (System.currentTimeMillis() < (startTime + 100000)) {
                  System.gc();
                  if (refPhantom.isEnqueued() == false) {
                      try {
                          Thread.sleep(100);
                      } catch (InterruptedException i) {
                      }
                      continue;
                  }
                  break;
              }
              if (refPhantom.isEnqueued() == false) {
                  // OKAY, GC have not enqueued refPhantom for the timeout period
                  System.out.println("OKAY");
                  return;
              }
              if (refPhantom.enqueue() == true) {
                  // not OKAY, enqueue() should return false since
                  // refPhantom is already enqueued by the GC
                  System.out.println("WRONG: enqueue() returned true " +
                                     "instead of false");
                  return;
              }
              System.out.println("OKAY");
              return;
       }

       //the method poll() returns wrong value
       public static void PhantomRef2() {
              ReferenceQueue queue = new ReferenceQueue();
              PhantomReference refPhantom = new PhantomReference(new Object(), queue);
              System.gc();
              long startTime = System.currentTimeMillis();
              while (System.currentTimeMillis() < (startTime + 100000)) {
                  System.gc();
                  if (refPhantom.isEnqueued() == false) {
                      try {
                          Thread.sleep(100);
                      } catch (InterruptedException i) {
                      }
                      continue;
                  }
                  break;
              }
              if (refPhantom.isEnqueued() == false) {
                  //OKAY, GC have not enqueued refPhantom for the timeout period
                  System.out.println("OKAY");
                  return;
              }
              if (queue.poll() == null) {
                  //not OKAY, poll() should return refPhantom enqueued by the GC
                  System.out.println("WRONG: poll() returned null instead " +
                                     "of refPhantom enqueued");
                  return;
              }
              System.out.println("OKAY");
              return;
       }
      }//end of class PhantomRef

      --------------------------------------------------------------------------


      ======================================================================

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              Assignee:
              mr Mark Reinhold
              Reporter:
              akuzminorcl Alexander Kuzmin (Inactive)
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