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

[Johannes Bechberger]

On Thu, 31 Oct 2024 23:32:48 GMT, Johannes Bechberger <jbechberger at openjdk.org> wrote:

>> src/hotspot/share/jfr/periodic/sampling/jfrCPUTimeThreadSampler.cpp line 221:
>> 
>>> 219:       _error = ERROR_NO_TOPFRAME;
>>> 220:       return;
>>> 221:     }
>> 
>> Wouldn't we end up with the same top frame if we started at the anchor frame instead?  In fact, the frame we want should always be the immediate caller of the anchor frame.  But I guess we need to check that the anchor frame is walkable.
>
> This is not always the case, as far as I know.

This is not always the case, as far as I know.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/20752#discussion_r1825280768