RFR: 8350786: Some java/lang jtreg tests miss requires vm.hasJFR [v2]

[Alan Bateman]

On Fri, 28 Feb 2025 01:29:32 GMT, David Holmes <dholmes at openjdk.org> wrote:

> IIRC you still need the modules for the unsupported pieces because the API's themselves are not optional and you have to be able to ask if something is supported.

In this case it's a JDK-specific module, and since JDK 9 it has been possible/allowed to create a run-time image that doesn't contain all the standard modules. I think the interesting topic coming up here is whether it make any sense to include "all modules" when the only VM is the minimal VM or specific features. In JDK 9 we put some basic checks in so that some command line options, like -javaagent or -Dcom.sun.management checked for the VM feature but more could be done if someone had the time to work through everything, likely significant build work to tie features to modules.

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PR Comment: https://git.openjdk.org/jdk/pull/23805#issuecomment-2689920210