RFR: 8342818: Implement JEP 509: JFR CPU-Time Profiling [v25]

[Johannes Bechberger]

On Sat, 31 May 2025 10:09:15 GMT, Markus Grönlund <mgronlun at openjdk.org> wrote:

>> Johannes Bechberger has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Remove debug printf
>
> src/hotspot/share/jfr/periodic/sampling/jfrCPUTimeThreadSampler.hpp line 36:
> 
>> 34: #if defined(LINUX)
>> 35: 
>> 36: #include "memory/padded.hpp"
> 
> What is padded? If not, this should go.

Good catch.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25302#discussion_r2118820425