RFR: 8349620: Add VMProps for static JDK [v2]

[Man Cao]

On Tue, 18 Feb 2025 19:26:09 GMT, Jiangli Zhou <jiangli at openjdk.org> wrote:

>> Please review this change that adds the `jdk.static` VMProps. It can be used to skip tests not for running on static JDK.
>> 
>> This also adds a new WhiteBox native method, `jdk.test.whitebox.WhiteBox.isStatic()`, which is used by VMProps to determine if it's static at runtime. 
>> 
>> `@requires !jdk.static` is added in `test/hotspot/jtreg/runtime/modules/ModulesSymLink.java` to skip running the test on static JDK. This test uses `bin/jlink`, which is not provided on static JDK. There are other tests that require tools in `bin/`. Those are not modified by the current PR to skip running on static JDK. Those can be done after the current change is fully discussed and reviewed/approved.
>
> Jiangli Zhou has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:
> 
>  - Merge branch 'master' into JDK-8349620
>  - - Add 'jdk.static' in VMProps. It can be used to skip tests not for running on static JDK.
>    - Add WhiteBox isStatic() native method. It's used by VMProps to determine of it's static at runtime.
>    - Add in '@requires !jdk.static' in test/hotspot/jtreg/runtime/modules/ModulesSymLink.java to skip the test on static JDK since it requires bin/jlink.

Changes look good.

>  I'm also wondering if we would want to merge the isStatic into isHermetic check in the future.

I guess it is unlikely we will package each jtreg test into single, hermetic files, each containing the whole JDK? If so, we probably won't need `isHermetic` for jtreg tests.

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Marked as reviewed by manc (Committer).

PR Review: https://git.openjdk.org/jdk/pull/23528#pullrequestreview-2625325934