8273831: PrintServiceLookup spawns 2 threads in the current classloader, getting orphaned

[benty-amzn]

Clean backport of JDK-8273831 to fix a regression that can leave an orphaned thread. Verified with included test.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8273831 needs maintainer approval

Issue

• JDK-8273831: PrintServiceLookup spawns 2 threads in the current classloader, getting orphaned (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk11u-dev.git pull/2623/head:pull/2623
$ git checkout pull/2623

Update a local copy of the PR:
$ git checkout pull/2623
$ git pull https://git.openjdk.org/jdk11u-dev.git pull/2623/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 2623

View PR using the GUI difftool:
$ git pr show -t 2623

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk11u-dev/pull/2623.diff

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[bridgekeeper]

👋 Welcome back btaylor! 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]

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

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

8273831: PrintServiceLookup spawns 2 threads in the current classloader, getting orphaned

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 2 new commits pushed to the master branch:

• d98b460: 8317507: C2 compilation fails with "Exceeded _node_regs array"
• b7f78a3: 8319436: Proxy.newProxyInstance throws NPE if loader is null and interface not visible from class loader

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
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.

[openjdk]

⚠️ @benty-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.

[mlbridge]

Webrevs

• 00: Full (5318689d)

[benty-amzn]

/approval JDK-8273831 request Clean backport that fixes a regression which can cause orphaned threads

[openjdk]

@benty-amzn usage: /approval [<id>] (request|cancel) [<text>]

[benty-amzn]

/integrate

[openjdk]

Going to push as commit 4117953.
Since your change was applied there have been 2 commits pushed to the master branch:

• d98b460: 8317507: C2 compilation fails with "Exceeded _node_regs array"
• b7f78a3: 8319436: Proxy.newProxyInstance throws NPE if loader is null and interface not visible from class loader

Your commit was automatically rebased without conflicts.

[openjdk]

@benty-amzn Pushed as commit 4117953.

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