RFR: 8376328: Convert PLABStats to use Atomic<T>

[Thomas Schatzl]

On Mon, 2 Feb 2026 17:22:34 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this change to convert the `PLABStats` class to use `Atomic<T>`.
>> 
>> Testing: gha
>> 
>> Thanks,
>>   Thomas
>
> Marked as reviewed by iwalulya (Reviewer).

Thanks @walulyai @albertnetymk for your reviews

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PR Comment: https://git.openjdk.org/jdk/pull/29420#issuecomment-3876107496