RFR: 8295808: GrowableArray should support capacity management

[Axel Boldt-Christmas]

On Sat, 22 Oct 2022 01:38:44 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Please review this change to GrowableArray to support capacity management.
> Two functions are added to GrowableArray, reserve and shrink_to_fit.  Also
> renamed the max_length function to capacity.
> 
> Used these new functions in StringDedupTable.
> 
> Testing: mach5 tier1-3

LGTM.

Any thoughts of moving `expand_to` and `shrink_to_fit` to a common function, given that they share a lot of logic.
Something like a general resize that
* Allocates if `new_capacity != 0` 
* Copy constructs new elements from `0` to `min(old_capacity, new_capacity)`
* Default constructs from `min(old_capacity, new_capacity)` to `new_capacity`
* Destroy old elements from `0` to `old_capacity`

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Marked as reviewed by aboldtch (Committer).

PR: https://git.openjdk.org/jdk/pull/10827