RFR: 8315149: Add hsperf counters for CPU time of internal GC threads [v40]

[Stefan Johansson]

On Thu, 9 Nov 2023 05:27:40 GMT, Jonathan Joo <jjoo at openjdk.org> wrote:

>> 8315149: Add hsperf counters for CPU time of internal GC threads
>
> Jonathan Joo has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add missing cpuTimeCounters files

src/hotspot/share/gc/g1/g1ConcurrentMark.cpp line 2093:

> 2091:   tttc.do_thread(cm_thread());
> 2092:   threads_do(&tttc);
> 2093: }

Any particular reason for having this in `G1ConcurrentMark` instead of keeping it where it is called in `G1ConcurrentMarkThread`. The implementation would be more or less the same apart from the two last lines:

  tttc.do_thread(this);
  cm()->threads_do(&tttc);

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PR Review Comment: https://git.openjdk.org/jdk/pull/15082#discussion_r1387839879