Name: ipR10196 Date: 07/24/2003


--------------------------------------
Test : nsk/jdi/BScenarios/multithrd/tc02x002
TestBase : testbase_nsk
VM : Client, Server
Mode : -Xint, -Xcomp, -Xmixed
Platform : Intel x86, sparc, sparcv9
OS : SunOs 5.8, RedHat Linux 8.0, Windows 2000
JDK : 1.5.0-b10
----------------------------------------

To reproduce the failure:
  cd /net/sqesvr.sfbay/export/vsn/GammaBase/Bugs/<this bug number>
  sh doit.sh [-g] [-v] $JAVA_HOME [JAVA_OPTS]
where
    -g - run test with java_g
    -v - run test in verbose mode
After test hangs, press Ctrl-\ or Ctrl-Break to see threads dump.

This test checks that the MethodEntryEvents are received for
"<clinit>" and "<init>" methods of the tested class in debuggee VM.

The test runs special event handling thread "Thread-1" to get and check
all received events. This thread hangs on VirtualMachine.resume()
while resuming debuggee VM after MethodEntryEvent for "<init> method received.
The main thread also hangs on exit in EventRequest.disable() for
ClassPrepareRequest. Here is fragment of typical thread dump:

    "Thread-1" prio=5 tid=0x009d6fa0 nid=0x1c8 in Object.wait() [18aef000..18aefd94]
at java.lang.Object.wait(Native Method)
- waiting on <0x100326c0> (a com.sun.tools.jdi.Packet)
at java.lang.Object.wait(Object.java:429)
at com.sun.tools.jdi.TargetVM.waitForReply(TargetVM.java:269)
- locked <0x100326c0> (a com.sun.tools.jdi.Packet)
at com.sun.tools.jdi.VirtualMachineImpl.waitForTargetReply(VirtualMachineImpl.java:886)
at com.sun.tools.jdi.PacketStream.waitForReply(PacketStream.java:51)
at com.sun.tools.jdi.JDWP$VirtualMachine$Resume.waitForReply(JDWP.java:609)
at com.sun.tools.jdi.VirtualMachineImpl.resume(VirtualMachineImpl.java:394)
at nsk.share.jdi.Debugee.resume(Debugee.java:318)
at nsk.jdi.BScenarios.multithrd.tc02x002$1.run(tc02x002.java:136)
    <...>
    "main" prio=5 tid=0x00235600 nid=0x4b0 in Object.wait() [6f000..6fc3c]
at java.lang.Object.wait(Native Method)
- waiting on <0x10034740> (a com.sun.tools.jdi.Packet)
at java.lang.Object.wait(Object.java:429)
at com.sun.tools.jdi.TargetVM.waitForReply(TargetVM.java:269)
- locked <0x10034740> (a com.sun.tools.jdi.Packet)
at com.sun.tools.jdi.VirtualMachineImpl.waitForTargetReply(VirtualMachineImpl.java:886)
at com.sun.tools.jdi.PacketStream.waitForReply(PacketStream.java:51)
at com.sun.tools.jdi.JDWP$EventRequest$Clear.waitForReply(JDWP.java:5630)
at com.sun.tools.jdi.JDWP$EventRequest$Clear.process(JDWP.java:5606)
at com.sun.tools.jdi.EventRequestManagerImpl$EventRequestImpl.clear(EventRequestManagerImpl.java:188)
- locked <0x10090348> (a com.sun.tools.jdi.EventRequestManagerImpl$ClassPrepareRequestImpl)
at com.sun.tools.jdi.EventRequestManagerImpl$EventRequestImpl.setEnabled(EventRequestManagerImpl.java:140)
- locked <0x10090348> (a com.sun.tools.jdi.EventRequestManagerImpl$ClassPrepareRequestImpl)
at com.sun.tools.jdi.EventRequestManagerImpl$EventRequestImpl.disable(EventRequestManagerImpl.java:131)
at nsk.jdi.BScenarios.multithrd.tc02x002.execTest(tc02x002.java:171)
at nsk.jdi.BScenarios.multithrd.tc02x002.run(tc02x002.java:87)
at nsk.jdi.BScenarios.multithrd.tc02x002.main(tc02x002.java:70)

This failure is reproduced intermittently, most often on Windows.
Several other tests are also affected by this bug.

After test hanged it is not killed by Process.destroy() or pressing Ctrl-C.
This breaks the whole tests execution under Tonga. Therefore, I'm marking this
bug with high priority P2.

Here is full log for running test under Windows:
================================================================================
Running the test...
binder> VirtualMachineManager: version 1.4
binder> Finding connector: default
binder> LaunchingConnector:
binder> name: com.sun.jdi.CommandLineLaunch
binder> description: Launches target using Sun Java VM command line and attaches to it
binder> transport: com.sun.tools.jdi.SharedMemoryTransport@506411
binder> Connector arguments:
binder> home=P:\ld24\java\hotspot\jdk1.5\win\jre
binder> vmexec=java
binder> options=
binder> main=nsk.jdi.BScenarios.multithrd.tc02x002a -debugee.vmkind=java "-debugee.vmkeys=" "-waittime=1" "-verbose"
binder> quote="
binder> suspend=true
binder> Launching debugee
binder> Redirecting VM output
binder> Waiting for VM initialized
binder> Initial VMStartEvent received: VMStartEvent in thread main
Starting handling event
binder> Received expected signal from debugee: ready

TEST BEGINS
===========
Waiting for all events received
 event ===>>> ClassPrepareEvent in thread main
... resumed
 event ===>>> 1 MethodEntryEvent arrived
event info:
thread - main
source - tc02x002a.java
method - <clinit>
line - 76
MethodEntryEvent occurs on the expected line 76 in method <clinit>

... resumed
debugee.stderr> Thread-1:: creating tc02x002aClass1
 event ===>>> 2 MethodEntryEvent arrived
event info:
thread - Thread-1
source - tc02x002a.java
method - <init>
line - 78
MethodEntryEvent occurs on the expected line 78 in method <init>

<Ctrl-BREAK>

Full thread dump Java HotSpot(TM) Client VM (1.5.0-beta-b10 mixed mode):

"Thread-1" prio=5 tid=0x009d6fa0 nid=0x1c8 in Object.wait() [18aef000..18aefd94]
at java.lang.Object.wait(Native Method)
- waiting on <0x100326c0> (a com.sun.tools.jdi.Packet)
at java.lang.Object.wait(Object.java:429)
at com.sun.tools.jdi.TargetVM.waitForReply(TargetVM.java:269)
- locked <0x100326c0> (a com.sun.tools.jdi.Packet)
at com.sun.tools.jdi.VirtualMachineImpl.waitForTargetReply(VirtualMachineImpl.java:886)
at com.sun.tools.jdi.PacketStream.waitForReply(PacketStream.java:51)
at com.sun.tools.jdi.JDWP$VirtualMachine$Resume.waitForReply(JDWP.java:609)
at com.sun.tools.jdi.VirtualMachineImpl.resume(VirtualMachineImpl.java:394)
at nsk.share.jdi.Debugee.resume(Debugee.java:318)
at nsk.jdi.BScenarios.multithrd.tc02x002$1.run(tc02x002.java:136)

"IORedirector" daemon prio=5 tid=0x009d6e38 nid=0x280 runnable [18aaf000..18aafd94]
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:194)
at sun.nio.cs.StreamDecoder$CharsetSD.readBytes(StreamDecoder.java:408)
at sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:450)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:182)
- locked <0x10515ab8> (a java.io.InputStreamReader)
at java.io.InputStreamReader.read(InputStreamReader.java:167)
at java.io.BufferedReader.fill(BufferedReader.java:136)
at java.io.BufferedReader.readLine(BufferedReader.java:299)
- locked <0x10515ab8> (a java.io.InputStreamReader)
at java.io.BufferedReader.readLine(BufferedReader.java:362)
at nsk.share.IORedirector.run(IORedirector.java:96)

"IORedirector for stderr" daemon prio=5 tid=0x009c2360 nid=0x24c runnable [18a6f000..18a6fd94]
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:194)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:220)
at java.io.BufferedInputStream.read(BufferedInputStream.java:277)
- locked <0x1050af58> (a java.io.BufferedInputStream)
at sun.nio.cs.StreamDecoder$CharsetSD.readBytes(StreamDecoder.java:408)
at sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:450)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:182)
- locked <0x1051bbf0> (a java.io.InputStreamReader)
at java.io.InputStreamReader.read(InputStreamReader.java:167)
at java.io.BufferedReader.fill(BufferedReader.java:136)
at java.io.BufferedReader.readLine(BufferedReader.java:299)
- locked <0x1051bbf0> (a java.io.InputStreamReader)
at java.io.BufferedReader.readLine(BufferedReader.java:362)
at nsk.share.IORedirector.run(IORedirector.java:96)

"JDI Target VM Interface" daemon prio=5 tid=0x009ecaf8 nid=0x45c runnable [18a2f000..18a2fd94]
at com.sun.tools.jdi.SharedMemoryConnection.receivePacket0(Native Method)
at com.sun.tools.jdi.SharedMemoryConnection.receivePacket(SharedMemoryConnection.java:60)
- locked <0x1050af98> (a java.lang.Object)
at com.sun.tools.jdi.TargetVM.run(TargetVM.java:96)
at java.lang.Thread.run(Thread.java:534)

"JDI Internal Event Handler" daemon prio=5 tid=0x009affd8 nid=0x56c in Object.wait() [189ef000..189efd94]
at java.lang.Object.wait(Native Method)
- waiting on <0x1051bd08> (a com.sun.tools.jdi.EventQueueImpl)
at java.lang.Object.wait(Object.java:429)
at com.sun.tools.jdi.EventQueueImpl.removeUnfiltered(EventQueueImpl.java:162)
- locked <0x1051bd08> (a com.sun.tools.jdi.EventQueueImpl)
at com.sun.tools.jdi.EventQueueImpl.removeInternal(EventQueueImpl.java:97)
at com.sun.tools.jdi.InternalEventHandler.run(InternalEventHandler.java:36)
at java.lang.Thread.run(Thread.java:534)

"Low Memory Detector" daemon prio=5 tid=0x0023e9c0 nid=0x564 waiting on condition [0..0]

"CompilerThread0" daemon prio=5 tid=0x0023d670 nid=0x49c waiting on condition [0..181efa90]

"Signal Dispatcher" daemon prio=10 tid=0x0095bd08 nid=0x324 waiting on condition [0..0]

"Finalizer" daemon prio=9 tid=0x009592e0 nid=0x4bc in Object.wait() [1816f000..1816fd94]
at java.lang.Object.wait(Native Method)
- waiting on <0x104fb550> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
- locked <0x104fb550> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=10 tid=0x00957e58 nid=0x468 in Object.wait() [1812f000..1812fd94]
at java.lang.Object.wait(Native Method)
- waiting on <0x104fb5b8> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:429)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:115)
- locked <0x104fb5b8> (a java.lang.ref.Reference$Lock)

"main" prio=5 tid=0x00235600 nid=0x4b0 in Object.wait() [6f000..6fc3c]
at java.lang.Object.wait(Native Method)
- waiting on <0x10034740> (a com.sun.tools.jdi.Packet)
at java.lang.Object.wait(Object.java:429)
at com.sun.tools.jdi.TargetVM.waitForReply(TargetVM.java:269)
- locked <0x10034740> (a com.sun.tools.jdi.Packet)
at com.sun.tools.jdi.VirtualMachineImpl.waitForTargetReply(VirtualMachineImpl.java:886)
at com.sun.tools.jdi.PacketStream.waitForReply(PacketStream.java:51)
at com.sun.tools.jdi.JDWP$EventRequest$Clear.waitForReply(JDWP.java:5630)
at com.sun.tools.jdi.JDWP$EventRequest$Clear.process(JDWP.java:5606)
at com.sun.tools.jdi.EventRequestManagerImpl$EventRequestImpl.clear(EventRequestManagerImpl.java:188)
- locked <0x10090348> (a com.sun.tools.jdi.EventRequestManagerImpl$ClassPrepareRequestImpl)
at com.sun.tools.jdi.EventRequestManagerImpl$EventRequestImpl.setEnabled(EventRequestManagerImpl.java:140)
- locked <0x10090348> (a com.sun.tools.jdi.EventRequestManagerImpl$ClassPrepareRequestImpl)
at com.sun.tools.jdi.EventRequestManagerImpl$EventRequestImpl.disable(EventRequestManagerImpl.java:131)
at nsk.jdi.BScenarios.multithrd.tc02x002.execTest(tc02x002.java:171)
at nsk.jdi.BScenarios.multithrd.tc02x002.run(tc02x002.java:87)
at nsk.jdi.BScenarios.multithrd.tc02x002.main(tc02x002.java:70)

"VM Thread" prio=5 tid=0x00997a90 nid=0x458 runnable

"VM Periodic Task Thread" prio=10 tid=0x0023fb68 nid=0x550 waiting on condition
================================================================================

Ivan Popov <###@###.###>

======================================================================
###@###.### 2003-07-24
The following tests are affected by this bug:
  nsk/jdi/BScenarios/multithrd/tc02x003
  nsk/jdi/BScenarios/multithrd/tc04x001