RFR: JDK-8314211: Add NativeLibraryUnload event

[Matthias Baesken]

On Tue, 15 Aug 2023 06:01:57 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> LGTM.
> 
> While looking at this, I saw that many dlopens in hotspot and jdk coding are not tracked, is that deliberate?
> 

Hi Thomas, thanks for the review !

Regarding untracked dlopen in HS codebase, I added a few  with
https://bugs.openjdk.org/browse/JDK-8313616
8313616: support loading library members on AIX in os::dll_load

I also had a question/discussion with David recently about untracked dlopen calls in HS and the outcome was that it was just seen not that important to track those .

Regarding untracked dlopen in JDK C codebase I have this one open for review 
https://bugs.openjdk.org/browse/JDK-8313764
8313764: Offer JVM HS functionality to shared lib load operations done by the JDK codebase

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PR Comment: https://git.openjdk.org/jdk/pull/15272#issuecomment-1678521598