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

[Ivan Walulya]

On Mon, 26 Jan 2026 14:42:04 GMT, Thomas Schatzl <tschatzl 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).

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PR Review: https://git.openjdk.org/jdk/pull/29420#pullrequestreview-3740888152