RFR: Add generations to freeset [v20]

[Y. Srinivas Ramakrishna]

On Sat, 29 Apr 2023 13:47:24 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

>> src/hotspot/share/gc/shenandoah/shenandoahFreeSet.hpp line 32:
>> 
>>> 30: #include "gc/shenandoah/shenandoahHeap.hpp"
>>> 31: 
>>> 32: enum MemoryReserve : uint8_t {
>> 
>> Would it tidy up matters to move `ShenandoahSetsOfFree` into its own source file(s)? I realize it's only used by `ShenandoahFreeSet`, but I think it'll keep it all much cleaner.
>
> My preference for expedience is to keep as is.  But if you feel strongly, I'll separate it out.

That' fine. Let's leave as is for now, for the reason you state.

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PR Review Comment: https://git.openjdk.org/shenandoah/pull/250#discussion_r1181698110