RFR: JDK-8289524: Add JFR JIT restart event [v2]

[Erik Gahlin]

On Tue, 5 Jul 2022 13:47:31 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> The JIT compiler restarts (see restart_compiler in NMethodSweeper::sweep_code_cache) would be a helpful addition to the JFR events. Currently we log the JIT stop operations in JFR (EventCodeCacheFull) but no restart.
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Incorporate JIT compiler restart into EventSweepCodeCache

It would be good to add a sanity check.  See:
https://github.com/openjdk/jdk/blob/83a5d5996bca26b5f2e97b67f9bfd0a6ad110327/test/jdk/jdk/jfr/event/compiler/TestCodeSweeper.java#L181

The test in on the ProblemList.txt due to timeouts, but probably works most of the time if you run it.

Also remove "JitRestart" from TestLookForUntestedEvents.java

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PR: https://git.openjdk.org/jdk/pull/9334