RFR: 8311302: Implement JEP 493: Linking Run-Time Images without JMODs [v42]

[Severin Gehwolf]

On Tue, 5 Nov 2024 17:02:24 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

>> test/jtreg-ext/requires/VMProps.java line 743:
>> 
>>> 741:         // jdk.jlink module has the following resource indicating a runtime-linkable
>>> 742:         // image. It's the diff file for runtime linking of the java.base module.
>>> 743:         String linkableRuntimeResource = "jdk/tools/jlink/internal/runtimelink/diff_java.base";
>> 
>> Can this access `LinkableRuntimeImage::DIFF_PATTERN` via qualified exports?
>
> I don't see how, but I may be missing something. `VMProps` isn't in any named module is it? Is it worth sprinkling `jdk.jlink`'s `module-info.java` classes with those exports for test-only purposes, though? Is there precedent that I can look at?
> 
> It appears this hard-coded resource seems the lesser of the two evils to me. Thoughts?

With the latest changes there is no `VMProps` extension to determine a run-time image link capable JDK anymore. So this is gone.

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PR Review Comment: https://git.openjdk.org/jdk/pull/14787#discussion_r1832668508