8344985: GenShen: Refactor arraycopy barrier for generational mode

[earthling-amzn]

Make the difference in behavior for generational and other modes more clear.

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Progress

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Issue

• JDK-8344985: GenShen: Refactor arraycopy barrier for generational mode (Task - P4)

Reviewers

• Aleksey Shipilev (@shipilev - Committer)

Reviewing

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$ git pull https://git.openjdk.org/shenandoah.git pull/553/head

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[bridgekeeper]

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[openjdk]

@earthling-amzn 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:

8344985: GenShen: Refactor arraycopy barrier for generational mode

Reviewed-by: shade

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 413 new commits pushed to the master branch:

• e22e8d5: Merge
• 4fbf272: 8344526: RISC-V: implement -XX:+VerifyActivationFrameSize
• 1343911: 8340334: Update jcmd VM.events max parameter to be INT
• 400eb9b: 8344524: Remove SecurityManager related code from jdk.jlink module
• a599c30: 8344471: Remove SecurityManager related code from java.compiler module
• b9bf447: 8344057: Remove doPrivileged calls from unix platform sources in the java.desktop module
• da2d7a0: 8344595: State transitions in internal VirtualThread comment needs to be updated
• 22a39dc: 8344064: Remove doPrivileged calls from print/imageio/media classes in the java.desktop module
• 27fda0e: 8344578: Clean up left over java.security and sun.security imports in Swing classes
• 080f1cc: 8289771: jpackage: ResourceEditor error when path is overly long on Windows
• ... and 403 more: https://git.openjdk.org/shenandoah/compare/2b505eebe5006673f99c58922434f43aab4b7b77...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.

[mlbridge]

Webrevs

• 00: Full (cc8cef55)

[earthling-amzn]

/integrate

[openjdk]

Going to push as commit 34d334d.
Since your change was applied there have been 413 commits pushed to the master branch:

• e22e8d5: Merge
• 4fbf272: 8344526: RISC-V: implement -XX:+VerifyActivationFrameSize
• 1343911: 8340334: Update jcmd VM.events max parameter to be INT
• 400eb9b: 8344524: Remove SecurityManager related code from jdk.jlink module
• a599c30: 8344471: Remove SecurityManager related code from java.compiler module
• b9bf447: 8344057: Remove doPrivileged calls from unix platform sources in the java.desktop module
• da2d7a0: 8344595: State transitions in internal VirtualThread comment needs to be updated
• 22a39dc: 8344064: Remove doPrivileged calls from print/imageio/media classes in the java.desktop module
• 27fda0e: 8344578: Clean up left over java.security and sun.security imports in Swing classes
• 080f1cc: 8289771: jpackage: ResourceEditor error when path is overly long on Windows
• ... and 403 more: https://git.openjdk.org/shenandoah/compare/2b505eebe5006673f99c58922434f43aab4b7b77...master

Your commit was automatically rebased without conflicts.

[openjdk]

@earthling-amzn Pushed as commit 34d334d.

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