RFR: 8352251: Implement Cooperative JFR Sampling [v3]

[Aleksey Shipilev]

On Fri, 28 Mar 2025 20:09:37 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Markus Grönlund has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - align params
>>  - adjustments
>
> src/hotspot/cpu/x86/interp_masm_x86.cpp line 1045:
> 
>> 1043:   Label slow_path;
>> 1044:   Label fast_path;
>> 1045:   safepoint_poll(slow_path, rthread, current_fp, true /* at_return */, false /* in_nmethod */);
> 
> A little heads-up: I am going to propose a little cleanup soon to drop `rthread` from x86 safepoint_pool (we can trust it is `r15_thread` always). That would probably yield a minor merge conflict here.

FYI, it would be here: https://github.com/openjdk/jdk/pull/24323

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PR Review Comment: https://git.openjdk.org/jdk/pull/24296#discussion_r2030922573