8353950: Clipboard interaction on Windows is unstable

[matthiasblaesing]

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8353950 needs maintainer approval
• JDK-8332271 needs maintainer approval

Issues

• JDK-8353950: Clipboard interaction on Windows is unstable (Bug - P4)
• JDK-8332271: Reading data from the clipboard from multiple threads crashes the JVM (Bug - P3)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/1911/head:pull/1911
$ git checkout pull/1911

Update a local copy of the PR:
$ git checkout pull/1911
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/1911/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1911

View PR using the GUI difftool:
$ git pr show -t 1911

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/1911.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back mblaesing! 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 change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

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

[openjdk]

⚠️ @matthiasblaesing 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 (c2fade9e)

[matthiasblaesing]

Same testing as for master + jdk25 was applied to the backport:

• Tests from test/jdk/java/awt/Clipboard were successfully run with fastdebug and release configuration. It was verified, that the new test fails before the change and succeeds afterwards.
• Application level test already done with the original change were repeated and verified