RFR: 8349146: [REDO] Implement a better allocator for downcalls [v6]

[Maurizio Cimadamore]

On Thu, 1 May 2025 09:04:00 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Improve on comments
>
> src/java.base/share/classes/jdk/internal/foreign/BufferStack.java line 81:
> 
>> 79:     @Override
>> 80:     public int hashCode() {
>> 81:         return System.identityHashCode(this);
> 
> What's the value in these overloads? Isn't this implementation the same we'd get if there were no overrides?

Ugh - it's a record, I see. Which brings up the question -- should it be a record? Should it advertize its `size and `tl` components (they seem rather implementation specific?).

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PR Review Comment: https://git.openjdk.org/jdk/pull/24829#discussion_r2070017489