RFR: 8376131: Convert ContiguousSpace to use Atomic<T>

[Kim Barrett]

On Thu, 22 Jan 2026 17:51:08 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this conversions of `ContiguousSpace` to use `Atomic<T>`.
> 
> Testing: gha, tier1-5
> 
> Thanks,
>   Thomas

Looks good.

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Marked as reviewed by kbarrett (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/29370#pullrequestreview-3734044371