RFR: 8307458: Add periodic heap usage JFR events [v2]

Tue May 16 09:57:08 UTC 2023

On Mon, 8 May 2023 14:33:25 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

>> Erik Helin has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Comments from Axel
>
> Looks good.

Thanks @stefank and @xmas92 for reviewing! I added `UNTIMED` to the event instances, thanks @xmas92 for catching this  (and you are correct, it would have worked anyhow, but it is better to be explicit).

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PR Comment: https://git.openjdk.org/jdk/pull/13867#issuecomment-1549350922