RFR (S) 8250589: Move Universe::_reference_pending_list into OopHandle

[coleen.phillimore at oracle.com]

Thanks Erik!
Coleen

On 7/28/20 3:35 AM, Erik Österlund wrote:
> Looks good.
>
> Thanks,
> /Erik
>
> On 2020-07-27 15:05, coleen.phillimore at oracle.com wrote:
>> Summary: Use synchronization to reference the _reference_pending_list 
>> with OopHandle
>>
>> Tested with tier1-6 with 100% passed (no other existing test failures!)
>>
>> open webrev at 
>> http://cr.openjdk.java.net/~coleenp/2020/8250589.01/webrev
>> bug link https://bugs.openjdk.java.net/browse/JDK-8250589
>>
>> Thanks,
>> Coleen
>