RFR: 8366457: Add ResourceArea and Arena allocators for the RBTree [v2]

[Johan Sjölen]

On Mon, 16 Feb 2026 09:01:09 GMT, Afshin Zafari <azafari at openjdk.org> wrote:

>> Yeah, thanks C for the copy-and-paste inclusion strategy :-).
>
> `resourceArea.hpp` includes both `allocation.hpp` and `arena.hpp`. Why should we include these two explicitly?

I don't think that it's good style to rely on transitive inclusions for your dependencies. As far as I know, we try our best to include what we use.

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PR Review Comment: https://git.openjdk.org/jdk/pull/29082#discussion_r2812025271