[10] RFR: 8185796: jstack and clhsdb jstack should show lock objects

Yasumasa Suenaga yasuenag at gmail.com
Mon Oct 9 14:19:50 UTC 2017


Hi all,

I uploaded new webrev to be adapted to current jdk10/hs:

   http://cr.openjdk.java.net/~ysuenaga/JDK-8185796/webrev.03/


Please review and sponsor it.


Thanks,

Yasumasa


On 2017/09/27 0:31, Yasumasa Suenaga wrote:
> Hi all,
> 
> I uploaded new webrev to be adapted to jdk10/hs:
> 
>    http://cr.openjdk.java.net/~ysuenaga/JDK-8185796/webrev.02/
> 
> 
> Thanks,
> 
> Yasumasa
> 
> 
> On 2017/08/24 22:59, Yasumasa Suenaga wrote:
>> Thanks Jini!
>>
>> I uploaded new webrev:
>>
>>    http://cr.openjdk.java.net/~ysuenaga/JDK-8185796/webrev.01/
>>
>> This webrev has been ported print_lock_info() to JavaVFrame.java, and I've added new testcase for `jhsdb jstack` and jstack command on `jhsdb clhsdb`.
>>
>>
>> Yasumasa
>>
>>
>> On 2017/08/24 18:01, Jini George wrote:
>>> Apologize for the late reply, Yasumasa.
>>>
>>>
>>>> I think so, but I guess it is difficult.
>>>> For example, test for CLHSDB command is provided as test/serviceability/sa/TestPrintMdo.java .
>>>> But target process seems to be fixed to "LingeredApp".
>>>> Can we change it to another program which generates lock contention?
>>>
>>> You can take a look at any of the hotspot/test/serviceability/sa/LingeredAppWith*.java files for this. The target process does not have to be be fixed to LingeredApp -- in these LingeredAppWith* cases, the targets are test-specific variations built on top of LingeredApp for ease of implementation.
>>>
>>> Thanks,
>>> Jini.


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