RFR: 8269537: memset() is called after operator new [v3]

[Leo Korinth]

On Thu, 7 Oct 2021 06:18:00 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Leo Korinth has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Use a thread local buffer so that the compiler might reorder operator new.
>
> src/hotspot/share/memory/memRegion.hpp line 110:
> 
>> 108: // A ResourceObj version of MemRegionClosure
>> 109: 
>> 110: class MemRegionClosureRO: public ResourceObj {
> 
> I think this class could be deleted entirely, with the only derived class (`DirtyCardToOopClosure`) instead deriving from ResourceObj.

I agree.

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PR: https://git.openjdk.java.net/jdk/pull/5387