RFR: 8352251: Implement Cooperative JFR Sampling [v4]

[Markus Grönlund]

On Fri, 18 Apr 2025 13:52:01 GMT, Jaroslav Bachorik <jbachorik at openjdk.org> wrote:

>> Markus Grönlund has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:
>> 
>>  - Merge branch 'master' into 8352251
>>  - align params
>>  - adjustments
>>  - refactoring
>>  - 8352251
>
> src/hotspot/share/jfr/periodic/sampling/jfrThreadSampling.cpp line 82:
> 
>> 80:   assert(jt->has_last_Java_frame(), "invariant");
>> 81: 
>> 82:   // For a request representing an interpreter frame, request._sample_sp is actually the frame pointer, fp.
> 
> :)

Yeah...

¯\_(ツ)_/¯

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PR Review Comment: https://git.openjdk.org/jdk/pull/24296#discussion_r2051458738