8362572: Delete the usage of "sun.java2d.reftype" from the sun.java2d.Disposer

[mrserb]

Just a code cleanup to reduce the amount of code we need to care about, test, and support.

The class sun.java2d.Disposer can use either weak or phantom references. For many years it has used phantom references by default.

One reason why weak references were supported is because phantom references keep a strong reference to the object until the reference is added to the reference queue and cleared. This behavior changed after the fix for JDK-8071507. Now both weak and phantom references behave the same way when it comes to clearing the reference to the object.

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Progress

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Issue

• JDK-8362572: Delete the usage of "sun.java2d.reftype" from the sun.java2d.Disposer (Enhancement - P4)

Reviewers

• Phil Race (@prrace - Reviewer)
• Alexey Ivanov (@aivanov-jdk - Reviewer)

Reviewing

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[bridgekeeper]

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[openjdk]

@mrserb 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:

8362572: Delete the usage of "sun.java2d.reftype" from the sun.java2d.Disposer

Reviewed-by: prr, aivanov

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 21 new commits pushed to the master branch:

• b8da969: 8362659: Remove sun.print.PrintJob2D.finalize()
• 48ba9d4: 8349946: Cipher javadoc could describe AEAD reuse better
• 9dd93c6: 8361497: Scoped Values: orElse and orElseThrow do not access the cache
• ... and 18 more: https://git.openjdk.org/jdk/compare/60c29ff57b22fa7c0bedb38316067e8e1988a24b...master

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]

@mrserb The following label will be automatically applied to this pull request:

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[mlbridge]

Webrevs

• 00: Full (c6bcaa9d)

[prrace]

Looks OK. I checked to see if any tests use this, but didn't find any.

[mrserb]

/integrate

[openjdk]

Going to push as commit 7d7d308.
Since your change was applied there have been 24 commits pushed to the master branch:

• eceb3bb: 8362452: [macOS] Remove CPrinterJob.finalize()
• 3acdba3: 8362557: [macOS] Remove CFont.finalize()
• 523993e: 8362291: [macOS] Remove finalize method in CGraphicsEnvironment.java
• ... and 21 more: https://git.openjdk.org/jdk/compare/60c29ff57b22fa7c0bedb38316067e8e1988a24b...master

Your commit was automatically rebased without conflicts.

[openjdk]

@mrserb Pushed as commit 7d7d308.

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