Thread safety check of MemorySegment

[NekoCaffeine]

> I think from an API perspective, if we manage to solve the confinement 
> problem, then I expect the memory segment API will have an extra method 
> to either turn a confined segment into an unconfined one, or vice-versa. 
> So you will be able to just create your mapped segment using mapFromPath 
> and then just 'share' it (and make it unconfined).

Thank you very much for your reply, which is consistent with what I thought.
I will continue to pay close attention to the progress of this project. This is a very cool project, just as exciting as valhalla.

NekoCaffeine