RFR: 8209396: Make PtrQueueSets not statically allocated

[Kim Barrett]

> On Aug 13, 2018, at 6:41 AM, Roman Kennke <rkennke at redhat.com> wrote:
> 
> Looks good.
> Thanks, Roman

Thanks.

> 
> Am 13. August 2018 00:07:00 MESZ schrieb Kim Barrett <kim.barrett at oracle.com>:
>> Please review this change to G1BarrierSet to make its two PtrQueueSet
>> members (_satb_mark_queue_set and _dirty_card_queue_set) be ordinary
>> data members rather than static data members.
>> 
>> This change doesn't take advantage of the different allocation scope
>> to simplify construction and initialization; that's being left to some
>> other RFE, possibly related to JDK-8156696.
>> 
>> This change ties the G1BarrierSet's PtrQueueSet lifetimes to that of
>> the barrier set itself. Since the barrier set is never destroyed
>> (currently more or less intentionally), neither will the sets be
>> destroyed.
>> 
>> CR:
>> https://bugs.openjdk.java.net/browse/JDK-8209396
>> 
>> Webrev:
>> http://cr.openjdk.java.net/~kbarrett/8209396/open.00/
>> 
>> Testing:
>> Mach5 tier1.
> 
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