RFR: 8351661: NMT: VMATree should support separate call-stacks for reserve and commit operations [v36]

[Johan Sjölen]

On Thu, 12 Jun 2025 09:51:13 GMT, Afshin Zafari <azafari at openjdk.org> wrote:

>> In NMT detail mode, we need to have separate call-stacks for Reserve and Commit operations.
>> This PR adds a second stack to every node that will be used when committing (and uncommitting) the start node of a reserved region.
>
> Afshin Zafari has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 39 commits:
> 
>  - Merge remote-tracking branch 'origin/master' into _8351661_separate_call_stack_reserve_commit
>  - invalid -> release.
>  - old format comments are removed. Redundant tests are removed.
>  - visualizations added. 1st try.
>  - 'rd*' ->'rd_<Tag>_cs<n>'
>  - Johan's comments.
>  - some comments changed
>  - fixed a missed change in test.
>  - impl of new visualization in one test case, for getting feedback.
>  - a merge glitch
>  - ... and 29 more: https://git.openjdk.org/jdk/compare/3f0fef2c...cff9eeb4

Marked as reviewed by jsjolen (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24028#pullrequestreview-2921035723