8320907: Shenandoah: Remove ShenandoahSelfFixing flag

[shipilev]

Clean backport to improve Shenandoah reliability and maintainability.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8320907 needs maintainer approval

Issue

• JDK-8320907: Shenandoah: Remove ShenandoahSelfFixing flag (Enhancement - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/149/head:pull/149
$ git checkout pull/149

Update a local copy of the PR:
$ git checkout pull/149
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/149/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 149

View PR using the GUI difftool:
$ git pr show -t 149

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/149.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back shade! 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]

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

[openjdk]

⚠️ @shipilev 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.

[mlbridge]

Webrevs

• 00: Full (e004791d)

[shipilev]

/approval request Clean backport to improve Shenandoah reliability and maintainability. Removes experimental flag. Risk is low.

[openjdk]

@shipilev
8320907: The approval request has been created successfully.

[GoeLin]

Hi @shipilev,
there seems to be a problem with GHA. Same with the others.

[shipilev]

Hi @shipilev, there seems to be a problem with GHA. Same with the others.

Yeah, GitHub had an outage yesterday. I restarted the workflows, let's see if it works now.

[openjdk]

@shipilev 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:

8320907: Shenandoah: Remove ShenandoahSelfFixing flag

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 14 new commits pushed to the master branch:

• e08eb0e: 8321582: yield .class not parsed correctly.
• d92ff7c: 8320309: AIX: pthreads created by foreign test library don't work as expected
• cd16670: 8318490: Increase timeout for JDK tests that are close to the limit when run with libgraal
• 2abfc99: 8310629: java/security/cert/CertPathValidator/OCSP/OCSPTimeout.java fails with RuntimeException Server not ready
• 1ea0d08: 8311992: Test java/lang/Thread/virtual/JfrEvents::testVirtualThreadPinned failed
• 2bf21b4: 8322783: prioritize /etc/os-release over /etc/SuSE-release in hs_err/info output
• 4537bfa: 8318607: Enable parallelism in vmTestbase/nsk/stress/jni tests
• a28d29c: 8318608: Enable parallelism in vmTestbase/nsk/stress/threads tests
• a1d7bcf: 6928542: Chinese characters in RTF are not decoded
• d5b8c28: 8322725: (tz) Update Timezone Data to 2023d
• ... and 4 more: https://git.openjdk.org/jdk21u-dev/compare/d44b5dc7a634b08f27f9a3e71112607a12023f8b...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.

[shipilev]

/integrate

[openjdk]

Going to push as commit 7fe7cfc.
Since your change was applied there have been 16 commits pushed to the master branch:

• 1b5aeb9: 8323065: Unneccesary CodeBlob lookup in CompiledIC::internal_set_ic_destination
• 6ee8f47: 8322512: StringBuffer.repeat does not work correctly after toString() was called
• e08eb0e: 8321582: yield .class not parsed correctly.
• d92ff7c: 8320309: AIX: pthreads created by foreign test library don't work as expected
• cd16670: 8318490: Increase timeout for JDK tests that are close to the limit when run with libgraal
• 2abfc99: 8310629: java/security/cert/CertPathValidator/OCSP/OCSPTimeout.java fails with RuntimeException Server not ready
• 1ea0d08: 8311992: Test java/lang/Thread/virtual/JfrEvents::testVirtualThreadPinned failed
• 2bf21b4: 8322783: prioritize /etc/os-release over /etc/SuSE-release in hs_err/info output
• 4537bfa: 8318607: Enable parallelism in vmTestbase/nsk/stress/jni tests
• a28d29c: 8318608: Enable parallelism in vmTestbase/nsk/stress/threads tests
• ... and 6 more: https://git.openjdk.org/jdk21u-dev/compare/d44b5dc7a634b08f27f9a3e71112607a12023f8b...master

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 7fe7cfc.

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