jhsdb jstack does not work with AppCDS

[Yasumasa Suenaga]

Thanks Jini,

I will watch JDK-8174994.


Yasumasa


On 2018/03/26 10:39, Jini George wrote:
> Hi Yasumasa,
> 
> This is likely to be due to JDK-8174994 (for which I am working on a fix
> right now, and which I hope to send for review in a day or two).
> 
> Thank you,
> Jini.
> 
> 
> On 3/25/2018 6:46 PM, Yasumasa Suenaga wrote:
>> Hi all,
>>
>> I tried to get jstack via jhsdb from AppCDS enabled process, but it
>> couldn't as below:
>>
>> ---------------
>> [ysuenaga at fc27 jdk-hs]$ /usr/local/jdk-10/bin/jhsdb jstack --pid 5614
>> Attaching to process ID 5614, please wait...
>> Debugger attached successfully.
>> Server compiler detected.
>> JVM version is 10+46
>> Deadlock Detection:
>>
>> sun.jvm.hotspot.types.WrongTypeException: No suitable match for type of
>> address 0x0000000800098690
>>   ??????? at
>> jdk.hotspot.agent/sun.jvm.hotspot.runtime.InstanceConstructor.newWrongTypeException(InstanceConstructor.java:62)
>>
>>   ??????? at
>> jdk.hotspot.agent/sun.jvm.hotspot.runtime.VirtualBaseConstructor.instantiateWrapperFor(VirtualBaseConstructor.java:109)
>>
>>   ??????? at
>> jdk.hotspot.agent/sun.jvm.hotspot.oops.Metadata.instantiateWrapperFor(Metadata.java:73)
>>
>>   ??????? at
>> jdk.hotspot.agent/sun.jvm.hotspot.oops.Oop.getKlassForOopHandle(Oop.java:210)
>>
>>   ??????? at
>> jdk.hotspot.agent/sun.jvm.hotspot.oops.ObjectHeap.newOop(ObjectHeap.java:252)
>>
>>   ??????? at
>> jdk.hotspot.agent/sun.jvm.hotspot.runtime.JavaThread.getThreadObj(JavaThread.java:359)
>>
>>   ??????? at
>> jdk.hotspot.agent/sun.jvm.hotspot.runtime.JavaThread.getCurrentParkBlocker(JavaThread.java:411)
>>
>>   ??????? at
>> jdk.hotspot.agent/sun.jvm.hotspot.runtime.DeadlockDetector.print(DeadlockDetector.java:82)
>>
>>   ?---------------
>>
>> I attempt to change SA to refer Klass::_archived_mirror, but I got same
>> exceptions.
>> How can I avoid this error?
>>
>>
>> Thanks,
>>
>> Yasumasa
>>