RFR: 8342818: Implement CPU Time Profiling for JFR [v32]

[Matthias Baesken]

On Wed, 27 Nov 2024 11:31:31 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:
> 
>   Fix build

TestCPUTimeClassUnloading coming with this change fails on our Linux aarch64 test machine ~ every second or third day with
java.lang.AssertionError: Not enough events
	at jdk.jfr.event.profiling.TestCPUTimeClassUnloading.main(TestCPUTimeClassUnloading.java:87)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
	at java.base/java.lang.Thread.run(Thread.java:1447)

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PR Comment: https://git.openjdk.org/jdk/pull/20752#issuecomment-2544843553