RFR: 8256302: releasing oopStorage when deflating allows for faster deleting

[Robbin Ehn]

On Fri, 2 Dec 2022 02:11:49 GMT, David Holmes <dholmes at openjdk.org> wrote:

> > You can ask by doing `_object().is_null()`
> 
> Are you allowed to do that when safepoint-safe?

Yes, since we are only checking if we have pointer to an oop and not actually touching the oop it self.

oop* _obj;
...
return _obj == NULL;

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PR: https://git.openjdk.org/jdk/pull/11296