RFR: 8338526: Don't store abstract and interface Klasses in class metaspace

[Thomas Stuefe]

On Mon, 26 Aug 2024 13:57:16 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> > I don't think the costs for two address comparisons matter, not with the comparatively few deallocations that happen (few hundreds or few thousand). If deallocate is hot, we are using metaspace wrong.
> 
> MethodData does a lot of deallocations from metaspace because it's allocated racily. It might be using Metaspace wrong.

I think that should be okay. This should still be an exception. I have never seen that many deallocations happening in customer cases.

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PR Comment: https://git.openjdk.org/jdk/pull/19157#issuecomment-2312905514