RFR: Add generations to freeset [v5]

[Kelvin Nilsen]

On Thu, 13 Apr 2023 01:38:56 GMT, Y. Srinivas Ramakrishna <ysr at openjdk.org> wrote:

>> Kelvin Nilsen has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Remove debug instrumentation
>
> src/hotspot/share/gc/shenandoah/shenandoahFreeSet.hpp line 102:
> 
>> 100:   bool touches_bounds(size_t num) const;
>> 101:   bool expand_collector_bounds_maybe(size_t idx);
>> 102:   bool expand_old_collector_bounds_maybe(size_t idx);
> 
> A 1-line documentation comment for each of these methods would be nice.

Done.

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PR Review Comment: https://git.openjdk.org/shenandoah/pull/250#discussion_r1170605169