RFR: 8351565: Implement JEP 502: Stable Values (Preview) [v74]

[Viktor Klang]

On Wed, 23 Apr 2025 10:38:22 GMT, Per Minborg <pminborg at openjdk.org> wrote:

>> Implement JEP 502.
>> 
>> The PR passes tier1-tier3 tests.
>
> Per Minborg has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 365 commits:
> 
>  - Replace 'content' with 'contents' and doc updates
>  - Merge branch 'master' into implement-jep502
>  - Remove section on fun/coll sync
>  - Reformat docs
>  - Fix failing test (exception message)
>  - Rework relayed to rethrown
>  - Fix copyright related issues
>  - Fix rawtype problem
>  - Fix build problem
>  - Resolve merge problem
>  - ... and 355 more: https://git.openjdk.org/jdk/compare/27faf454...ac6accd8

src/java.base/share/classes/java/lang/StableValue.java line 119:

> 117:  * The {@code getLogger()} method calls {@code logger.orElseSet()} on the stable value to
> 118:  * retrieve its contents. If the stable value is <em>unset</em>, then {@code orElseSet()}
> 119:  * evaluates the given supplier, and sets the contents to the result; the contents is then

@minborg Technically, isn't the *result* returned to the client (after setting it as the contents).

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PR Review Comment: https://git.openjdk.org/jdk/pull/23972#discussion_r2055900596