RFR: JDK-8297796 GenShen: instrument the remembered set scan [v12]

[Y. Srinivas Ramakrishna]

On Mon, 19 Dec 2022 23:43:38 GMT, William Kemper <wkemper at openjdk.org> wrote:

>> Y. Srinivas Ramakrishna has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 65 commits:
>> 
>>  - Merge branch 'master' into JVM-1264-dependent
>>  - Add a previously missed ticket#. Doing it here rather than in parent to
>>    avoid an otherwise unnecessary re-review touchpoint.
>>  - Merge branch 'stats_merge' into JVM-1264-dependent
>>  - Merge branch 'master' into stats_merge
>>  - jcheck space fix
>>  - Fix compiler error on windows.
>>  - Fix some tier1 tests.
>>  - Remove an unnecessary include, fix some type incorrectness.
>>  - Merge branch 'JVM-1264' into JVM-1264-dependent
>>  - Merge branch 'master' into JVM-1264
>>  - ... and 55 more: https://git.openjdk.org/shenandoah/compare/bbd4ef34...9c5c741f
>
> src/hotspot/share/gc/shenandoah/shenandoahCardStats.cpp line 57:
> 
>> 55:     if (record) {
>> 56:       // Update global stats for distribution of dirty/clean card %ge
>> 57:       _local_card_stats[DIRTY_CARDS].add((double)_dirty_card_cnt*100/(double)_cards_in_cluster);
> 
> typo? `%` -> `a`

I mean percentage where I said `%ge`. I'll clarify the comments a bit more. Please continue the review and I'll improve some of the documentation comments for clarity.

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PR: https://git.openjdk.org/shenandoah/pull/176