RFR: 8349620: Add VMProps for static JDK [v3]

[Jaikiran Pai]

On Tue, 18 Feb 2025 19:29:10 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.

Hello Jiangli, the change to introduce a `@requires` property for identifying a static JDK looks OK to me.

> @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.

This part however feels odd. Updating this (and other tests in future) to use the `@requires !jdk.static` to identify the presence or absence of a specific tool in the JDK installation doesn't seem right. Perhaps they should instead rely on a tool-specific property (like maybe `@requires jdk.tool.jlink`)?

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PR Comment: https://git.openjdk.org/jdk/pull/23528#issuecomment-2667657019