RFR (S) 8212988: add recent class unloading events to the hs_err log

[Thomas Stüfe]

>
>> I think your patch looks fine. One could improve upon it (e.g. log class
>> loading etc) but it is not necessary to make this useful.
>>
>>
>> Thank you!  We usually don't have bugs related to class loading vs
>> unloading, and we already have unified logging that helps debug those
>> issues.
>>
>
> I misspoke.   We have class loading events in the generic event section:
>
> Events (10 events):
> ...
> Event: 472.776 Executing VM operation: ZMarkEnd
> Event: 472.777 Executing VM operation: ZMarkEnd done
> Event: 472.814 loading class org/apache/cassandra/config/CFMetaData
> Event: 472.814 loading class org/apache/cassandra/config/CFMetaData done
>
> Coleen
>

Ah, I should have seen this. Sorry for the confusion.

..Thomas


>
>
>> Coleen
>>
>>
> ..Thomas
>
>
>>
>> Cheers, Thomas
>>
>>
>>> Coleen
>>>
>>>
>>> Cheers, Thomas
>>>
>>>
>>> On Tue, Feb 12, 2019 at 4:20 PM <coleen.phillimore at oracle.com> wrote:
>>>
>>>> Summary: also moved class unloading logging in expected place.
>>>>
>>>> Tested with assert to verify hs_err_file, some dacapo performance
>>>> testing, and hs tier1-6.  See bug for details.
>>>>
>>>> open webrev at
>>>> http://cr.openjdk.java.net/~coleenp/2019/8212988.01/webrev
>>>> bug link https://bugs.openjdk.java.net/browse/JDK-8212988
>>>>
>>>> Thanks,
>>>> Coleen
>>>>
>>>
>>>
>>
>