8305186: Reference.waitForReferenceProcessing should be more accessible to tests

[sendaoYan]

Hi all,

This pull request contains a backport of commit d8f012ea from the openjdk/jdk repository.

The commit being backported was authored by Brent Christian on 25 Apr 2025 and was reviewed by Kim Barrett.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8305186 needs maintainer approval

Issue

• JDK-8305186: Reference.waitForReferenceProcessing should be more accessible to tests (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/4072/head:pull/4072
$ git checkout pull/4072

Update a local copy of the PR:
$ git checkout pull/4072
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/4072/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 4072

View PR using the GUI difftool:
$ git pr show -t 4072

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/4072.diff

Using Webrev

Link to Webrev Comment

[sendaoYan]

I have verified this clean backport PR locally with test test/jdk/java/lang/ref/FinalizerHistogramTest.java which use the newly added function.

[bridgekeeper]

👋 Welcome back syan! 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 issue from the original commit.

[openjdk]

⚠️ @sendaoYan 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 (ed39be91)