How to explicit deallocate memory segment?

[tison]

A confined/shared arena is defined to associate the same lifecycle for all
memory segments it allocates - that they will be deallocated on the arena
closed.

But it can be normal that I want to preallocate a large arena and
allocate/deallocate memory segments on this arena. In this case, what
design pattern can help since there is no explicit deallocate method (I
found we have one in the early release but it's absent now, why?)

Best,
tison.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.org/pipermail/panama-dev/attachments/20231017/10e8bbde/attachment.htm>