RFR: 8233443: G1 DetailedUsage class names overly generic for global namespace

[Albert Mingkun Yang]

On Fri, 22 Dec 2023 15:47:02 GMT, Lei Zaakjyu <duke at openjdk.org> wrote:

> Description:
> The classes DetailedUsage and DetailedUsageClosure are defined in G1HeapTransitions.cpp. These class names seem a bit generic for the global namespace. They could be G1-prefixed, but I think better would be to make them nested classes of G1HeapTransition. Just declare them in that class, with the definitions still in the .cpp file.

Marked as reviewed by ayang (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/17186#pullrequestreview-1794776120