RFR: 8365880: Shenandoah: Unify memory usage accounting in ShenandoahFreeSet [v3]

[Kelvin Nilsen]

On Wed, 10 Sep 2025 20:42:42 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

>> Kelvin Nilsen has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   another tweak to make GHA gtest happy
>
> src/hotspot/share/gc/shenandoah/heuristics/shenandoahAdaptiveHeuristics.cpp line 372:
> 
>> 370:       _last_sample_time = now;
>> 371:       _last_sample_value = allocated;
>> 372:     }
> 
> This was a bug.  If we don't update the average, we should not restart the time until next sample and we should not overwrite the value of _last_sample_value.

Let's split this out into a different PR.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26867#discussion_r2345013011