RFR: 8351565: Implement JEP 502: Stable Values (Preview) [v53]

[Rémi Forax]

On Thu, 10 Apr 2025 13:46:17 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> > > ```
> > > 
> > > I will take a look at it.
> > > ```
> > 
> > 
> > As i said in another mail to core-lib this morning, it seems that the field storing the hashcode of String is not marked with @stable. That's may be the issue.
> 
> Yes. I can confirm that this is the root cause of the problem:
> 
> ```
> Benchmark                         Mode  Cnt    Score    Error  Units
> Tmp.confinedStableFunctionLoop    avgt    5  153.522 ±  6.707  ns/op
> Tmp.confinedStableMapElementLoop  avgt    5  142.780 ±  4.077  ns/op
> Tmp.confinedStableMapLoop         avgt    5  157.815 ± 17.250  ns/op
> Tmp.confinedStableValueLoop       avgt    5  142.940 ±  2.721  ns/op
> Tmp.confinedUnmodifiableMapLoop   avgt    5  142.542 ± 10.049  ns/op
> ```

Nice !

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PR Comment: https://git.openjdk.org/jdk/pull/23972#issuecomment-2793788502