8363889: Update sun.print.PrintJob2D to use Disposer

[rm-gh-8]

Backporting JDK-8363889: Update sun.print.PrintJob2D to use Disposer.

This PR refactors PrintJob2D to use a delegate pattern with Disposer-based cleanup as a replacement for relying on finalize(), so that when the PrintJob2D object becomes unreachable, the Disposer can call end() on the delegate to release resources.

This is a prerequisite for JDK-8378417 which will be added as a dependent PR (#441) for parity with Oracle JDK.

Ran related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

make test TEST=test/jdk/java/awt/PrintJob

Results attached;

windows-x64-specific-test.log
macos-aarch64-specific-test.log
linux-x64-specific-test.log
linux-aarch64-specific-test.log

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8363889 needs maintainer approval

Integration blocker

 ⚠️ Dependency #439 must be integrated first

Issue

• JDK-8363889: Update sun.print.PrintJob2D to use Disposer (Enhancement - P4 - Requested)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u-dev.git pull/440/head:pull/440
$ git checkout pull/440

Update a local copy of the PR:
$ git checkout pull/440
$ git pull https://git.openjdk.org/jdk25u-dev.git pull/440/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 440

View PR using the GUI difftool:
$ git pr show -t 440

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk25u-dev/pull/440.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back rmesde! A progress list of the required criteria for merging this PR into pr/439 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.

[mlbridge]

Webrevs

• 00: Full (41bd2dba)

[rm-gh-8]

/approval request for backport of JDK-8363889: Update sun.print.PrintJob2D to use Disposer.

This PR refactors PrintJob2D to use a delegate pattern with Disposer-based cleanup as a replacement for relying on finalize(), so that when the PrintJob2D object becomes unreachable, the Disposer can call end() on the delegate to release resources.

This is a prerequisite for JDK-8378417 which will be added as a dependent PR (#441) for parity with Oracle JDK.

Medium risk — while the refactoring is mechanically straightforward (moving code to a delegate with no logic changes), the switch from finalization to Disposer-based cleanup changes the timing and guarantees of resource cleanup. end() is now
synchronized on the PrintJobDelegate instance rather than PrintJob2D.

[openjdk]

@rm-gh-8
8363889: The approval request has been created successfully.