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From "Oliver Deakin (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-6305) [jdktools][jdwp] Unexpected VM_DEATH events running JDWP tests in Java 6 branch
Date Thu, 13 Aug 2009 10:35:14 GMT
[jdktools][jdwp] Unexpected VM_DEATH events running JDWP tests in Java 6 branch
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                 Key: HARMONY-6305
                 URL: https://issues.apache.org/jira/browse/HARMONY-6305
             Project: Harmony
          Issue Type: Bug
          Components: JDK
            Reporter: Oliver Deakin


The following two failures/errors:

 Invalid event kind, expected:<8(CLASS_PREPARE)> but was:<99(VM_DEATH)>
 junit.framework.AssertionFailedError: Invalid event kind, expected:<8(CLASS_PREPARE)>
but was:<99(VM_DEATH)>
or
 org.apache.harmony.jpda.tests.framework.jdwp.ParsedEvent$Event_VM_DEATH
 java.lang.ClassCastException: org.apache.harmony.jpda.tests.framework.jdwp.ParsedEvent$Event_VM_DEATH

are the cause of failures in these tests:

org.apache.harmony.jpda.tests.jdwp.Events.ClassPrepareTest.testClassPrepareEventWithSourceDebugExtension001
org.apache.harmony.jpda.tests.jdwp.Events.ClassPrepareTest.testClassPrepareEventWithSourceDebugExtension002
org.apache.harmony.jpda.tests.jdwp.Events.MonitorContendedEnteredTest.testMonitorContendedEntteredForClassOnly

org.apache.harmony.jpda.tests.jdwp.Events.MonitorContendedEnterTest.testMonitorContendedEnterForClassOnly
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitedTest.testMonitorWaitedForClassOnly
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitedTest.testMonitorWaitedForClassMatchExact
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitedTest.testMonitorWaitedForClassMatchFirst
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitedTest.testMonitorWaitedForClassMatchSecond
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitedTest.testMonitorWaitedForClassExclude
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitTest.testMonitorWaitForClassOnly
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitTest.testMonitorWaitForClassMatchExact
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitTest.testMonitorWaitForClassMatchFirst
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitTest.testMonitorWaitForClassMatchSecond
org.apache.harmony.jpda.tests.jdwp.Events.MonitorWaitTest.testMonitorWaitForClassExclude

when running the JDWP tests in the Java 6 branch. It is likely they all have the same cause.


Previously when I investigated the "expected:<8(CLASS_PREPARE)> but was:<99(VM_DEATH)>"
failure I found that the CLASS_PREPARE event was being triggered as expected, but the test
did not seem to be catching it for some reason. It is possible there could be a timing hole
in the test causing these failures (i.e. the debuggee VM is terminating before the debugger
VM is ready, so the debugger VM only sees the debuggee shutting down), but the failures need
more investigation to detemine the cause. 

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