RFR: 8157023: Integrate NMT with JFR

[Stefan Johansson]

On Fri, 2 Dec 2022 08:07:09 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> I turned `reserved_total(...)` and `committed_total(...)`into a static helpers since they did not use any members. That way my new reporter did not have to inherit `MemReporter`.
>
> Ah okay, I was blind, sorry.

No problem, I actually asked my self the same question when I did a quick browse of the code before publishing :)

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PR: https://git.openjdk.org/jdk/pull/11449