RFR: Add generations to freeset [v21]

[Kelvin Nilsen]

On Mon, 1 May 2023 18:45:20 GMT, William Kemper <wkemper at openjdk.org> wrote:

>> Kelvin Nilsen has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Respond to reviewer feedback
>
> src/hotspot/share/gc/shenandoah/shenandoahFreeSet.hpp line 32:
> 
>> 30: #include "gc/shenandoah/shenandoahHeap.hpp"
>> 31: 
>> 32: enum FreeMemoryType : uint8_t {
> 
> Globally visible type should have `Shenandoah` prefix.

Thanks.  Done.

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PR Review Comment: https://git.openjdk.org/shenandoah/pull/250#discussion_r1181926593