RFR: 8367013: Add Atomic<T> to package/replace idiom of volatile var plus AtomicAccess:: operations [v4]

[Andrew Haley]

On Sat, 18 Oct 2025 16:26:06 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> After a lot of Oracle-internal discussion, I'm proposing the `relaxed_store`
> function in this PR be changed to `store_relaxed`. I'm going to hold off on
> making that change for a bit, to give folks not in on that internal-to-Oracle
> discussion an opportunity to weigh in. (I noticed that @theRealAph liked the
> suggestion of "unordered" in an earlier comment.)

`store_relaxed` sounds good to me. It has the great advantage of being unlikely
to require people to have to search for its meaning.

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PR Comment: https://git.openjdk.org/jdk/pull/27539#issuecomment-3419704866