8329134: Reconsider TLAB zapping

[pengxiaolong]

I'd like to backport JDK-8329134 to jdk17

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8329134 needs maintainer approval

Issue

• JDK-8329134: Reconsider TLAB zapping (Enhancement - P4 - Approved)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/2510/head:pull/2510
$ git checkout pull/2510

Update a local copy of the PR:
$ git checkout pull/2510
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/2510/head

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Checkout this PR locally:
$ git pr checkout 2510

View PR using the GUI difftool:
$ git pr show -t 2510

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Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/2510.diff

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[bridgekeeper]

👋 Welcome back pengxiaolong! 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]

@pengxiaolong 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:

8329134: Reconsider TLAB zapping

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 3 new commits pushed to the master branch:

• 33ab474: 8311666: Disabled tests in test/jdk/sun/java2d/marlin
• 1b807f9: 8315559: Delay TempSymbol cleanup to avoid symbol table churn
• 1ce0c63: 8324646: Avoid Class.forName in SecureRandom constructor

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[openjdk]

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

[openjdk]

⚠️ @pengxiaolong 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

• 01: Full - Incremental (2472b08b)
• 00: Full (6de99a39)

[pengxiaolong]

/approval request Applying for maintainer approval

[openjdk]

@pengxiaolong usage: /approval [<id>] (request|cancel) [<text>]

[pengxiaolong]

/approval request Applying for maintainer approval

[openjdk]

@pengxiaolong
8329134: The approval request has been created successfully.

[pengxiaolong]

/approval request Backport the fix to jdk17 to improve fastdebug tests performance; applies cleanly, apart from the NULL/nullptr conflicts; All tests passed; Risk is low: there was no follow-up bug since mainline integration 2 months and the production path should not be affected.

[openjdk]

@pengxiaolong
8329134: The approval request has been updated successfully.

[pengxiaolong]

Thanks a lot! Appreciate it for the review.

/integrate

[openjdk]

@pengxiaolong
Your change (at version 2472b08) is now ready to be sponsored by a Committer.

[shipilev]

/sponsor

[openjdk]

Going to push as commit 09ad130.
Since your change was applied there have been 3 commits pushed to the master branch:

• 33ab474: 8311666: Disabled tests in test/jdk/sun/java2d/marlin
• 1b807f9: 8315559: Delay TempSymbol cleanup to avoid symbol table churn
• 1ce0c63: 8324646: Avoid Class.forName in SecureRandom constructor

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev @pengxiaolong Pushed as commit 09ad130.

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