RFR: 8342818: Implement CPU Time Profiling for JFR [v21]

[Jaroslav Bachorik]

On Mon, 11 Nov 2024 16:08:59 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:
> 
>   Make parsing rates safer

src/hotspot/share/jfr/recorder/stacktrace/jfrAsyncStackTrace.cpp line 68:

> 66:   _reached_root = true;
> 67: 
> 68:   JfrVframeStream vfs(jt, frame, false, true, false);

Does this mean we are not going to get frames from virtual threads/continuations?

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PR Review Comment: https://git.openjdk.org/jdk/pull/20752#discussion_r1839782655