8361726: Shenandoah: More detailed evacuation instrumentation

[earthling-amzn]

Not clean. Conflicted with 68b27b88b5160dd2883f93928c5f6ce245412495, but not difficult to resolve.

---

Progress

• Change must not contain extraneous whitespace
• JDK-8361726 needs maintainer approval
• Commit message must refer to an issue

Issue

• JDK-8361726: Shenandoah: More detailed evacuation instrumentation (Enhancement - P4 - Approved)

Reviewing

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$ git checkout pull/391
$ git pull https://git.openjdk.org/jdk25u-dev.git pull/391/head

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[bridgekeeper]

👋 Welcome back wkemper! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@earthling-amzn This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8361726: Shenandoah: More detailed evacuation instrumentation

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 40 new commits pushed to the master branch:

• 541a194: 8375065: Update LCMS to 2.18
• 9f50cd8: 8369950: TLS connection to IPv6 address fails with BCJSSE due to IllegalArgumentException
• 866a70b: 8358600: Template-Framework Library: Template for TestFramework test class
• ... and 37 more: https://git.openjdk.org/jdk25u-dev/compare/79f0f9ded514c763ad085abb5b156a81bf633c16...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 01: Full - Incremental (63ff5bf4)
• 00: Full (eedc45c2)

[openjdk]

⚠️ @earthling-amzn This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[earthling-amzn]

/approval request We would like to backport this feature because it provides valuable information for debugging evacuation related performance issues. We have a follow up backport planned which will make this feature a runtime option in product builds (in this PR, the feature is only available in non-product builds). We (Amazon) have used this feature in production for many months. We have also tested it on several benchmarks and additional jtreg tests beyond what Github runs (jtreg:all with Shenandoah). This change affects nothing outside of Shenandoah.

[openjdk]

@earthling-amzn
8361726: The approval request has been created successfully.

[earthling-amzn]

/integrate

[openjdk]

Going to push as commit 7672013.
Since your change was applied there have been 43 commits pushed to the master branch:

• 1292cda: 8064922: [macos] Test javax/swing/JTabbedPane/4624207/bug4624207.java fails
• adfde76: 8144124: [macosx] The tabs can't be aligned when we pressing the key of 'R','B','L','C' or 'T'.
• 2008683: 8376104: C2 crashes in PhiNode::Ideal(PhaseGVN*, bool) accessing NULL pointer
• ... and 40 more: https://git.openjdk.org/jdk25u-dev/compare/79f0f9ded514c763ad085abb5b156a81bf633c16...master

Your commit was automatically rebased without conflicts.

[openjdk]

@earthling-amzn Pushed as commit 7672013.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.