RFR: 8342818: Implement CPU Time Profiling for JFR [v4]

[Markus Grönlund]

On Wed, 30 Oct 2024 19:34:23 GMT, Johannes Bechberger <jbechberger at openjdk.org> wrote:

>> This is the code for the [JEP draft: CPU Time based profiling for JFR].
>
> Johannes Bechberger has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove min_valid_free_size_bytes

Test: jdk/jfr/event/profiling/TestNative.java times out on Linux. Could perhaps be an indication that event control/settings is getting mixed up between the two samplers?

jdk.jfr.event.profiling.TestNative
result: Error. Agent error: java.lang.Exception: Agent 21 timed out with a timeout of 480 seconds; check console log for any additional details

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PR Comment: https://git.openjdk.org/jdk/pull/20752#issuecomment-2449772623