8349002: GenShen: Deadlock during shutdown

[earthling-amzn]

Clean backport. Fixes bug introduced by JDK-8345970.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8349002: GenShen: Deadlock during shutdown (Task - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/153/head:pull/153
$ git checkout pull/153

Update a local copy of the PR:
$ git checkout pull/153
$ git pull https://git.openjdk.org/shenandoah-jdk21u.git pull/153/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 153

View PR using the GUI difftool:
$ git pr show -t 153

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/shenandoah-jdk21u/pull/153.diff

Using Webrev

Link to Webrev Comment

[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:

8349002: GenShen: Deadlock during shutdown

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 no new commits pushed to the master branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential 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

• 00: Full (6b6ea8e7)

[earthling-amzn]

/integrate

[openjdk]

Going to push as commit ceaeb7b.

[openjdk]

@earthling-amzn Pushed as commit ceaeb7b.

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