RFR: 8366122: Shenandoah: Implement efficient support for object count after gc events [v2]

[Y. Srinivas Ramakrishna]

On Thu, 4 Sep 2025 00:24:37 GMT, pf0n <duke at openjdk.org> wrote:

>> I believe you need it for this: https://github.com/pf0n/jdk/blob/f43e334bf76f878ec688cbd58a5ab1cb10deb0f9/src/hotspot/share/memory/heapInspection.hpp#L218
>> 
>> It probably happens to work at other places because of preceding includes that happen to satisfy this. Explicitly including it here makes sense for that reason. Not sure why it just started showing up, but likely a new use that didn't otherwise satisfy this include.
>
> I forgot to circle back on this, but there are files that I created that includes `heapInspection.hpp`. I get an incomplete type for the Mutex class if I don't include `mutex.hpp`.

Makes sense.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26977#discussion_r2320618033