RFR (S) 8252043: Move inner class metaspace cleaning out of safepoint cleanup tasks

[Coleen Phillimore]

Thanks Erik!
Coleen

On 8/20/20 9:58 AM, Erik Österlund wrote:
> Hi Coleen,
>
> This is definitely a step in the right direction. Looks good!
>
> Thanks,
> /Erik
>
> On 2020-08-19 23:47, Coleen Phillimore wrote:
>> Summary: Clean up inner metaspaces from ServiceThread if cleanup is 
>> needed for concurrent GCs.
>>
>> Moved inner metaspace cleaning back to class unloading, unless using 
>> concurrent GC.  There we initiate a safepoint if inner metaspaces 
>> require cleaning.
>>
>> Tested with tier1-6.
>>
>> open webrev at 
>> http://cr.openjdk.java.net/~coleenp/2020/8252043.01/webrev
>> bug link https://bugs.openjdk.java.net/browse/JDK-8252043
>>
>> Thanks,
>> Coleen
>