RFR: 8352251: Implement JEP 518: JFR Cooperative Sampling [v23]

[Markus Grönlund]

On Thu, 15 May 2025 16:50:55 GMT, Patricio Chilano Mateo <pchilanomate at openjdk.org> wrote:

>> Markus Grönlund has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   growable array constructur without default initialization
>
> src/hotspot/share/runtime/javaThread.hpp line 232:
> 
>> 230:   inline void set_obj_deopt_flag();
>> 231:   inline void clear_obj_deopt_flag();
>> 232:   bool is_trace_suspend()      { return (_suspend_flags & _trace_flag) != 0; }
> 
> Can be removed. Same with the definition of `_trace_flag` in `SuspendFlags` and the usage in `has_special_runtime_exit_condition()`.

Thanks!

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PR Review Comment: https://git.openjdk.org/jdk/pull/24296#discussion_r2091885262