RFR: 8234502: Merge GenCollectedHeap and SerialHeap [v10]

[Albert Mingkun Yang]

On Wed, 10 Jan 2024 05:15:50 GMT, Lei Zaakjyu <duke at openjdk.org> wrote:

>> 8234502: Merge GenCollectedHeap and SerialHeap
>
> Lei Zaakjyu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove two '*Generation'

`make test CONF=debug TEST=serviceability/sa/ClhsdbThreadContext.java JTREG_JAVA_OPTIONS=-XX:+UseG1GC` causes "AssertionFailure: Should have unknown location" in my testing.

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PR Comment: https://git.openjdk.org/jdk/pull/16927#issuecomment-1884482023