8264052: Shenandoah: Backout 8263832

[zhengyu123]

TestStringDedupStress started to fail after JDK-8263832.

JDK-8263832 is incorrect, because Threads::possibly_parallel_threads_do() only iterates over Java and VM threads, it should be backed out. The original works correctly.

---

Progress

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Issue

• JDK-8264052: Shenandoah: Backout 8263832

Reviewers

• Aleksey Shipilev (@shipilev - Reviewer)

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To checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/3158/head:pull/3158
$ git checkout pull/3158

To update a local copy of the PR:
$ git checkout pull/3158
$ git pull https://git.openjdk.java.net/jdk pull/3158/head

[bridgekeeper]

👋 Welcome back zgu! 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]

@zhengyu123 The following labels will be automatically applied to this pull request:

• hotspot-gc
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[mlbridge]

Webrevs

• 00: Full (9fb769d)

[shipilev]

Looks fine.

[openjdk]

@zhengyu123 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:

8264052: Shenandoah: Backout 8263832

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 2 new commits pushed to the master branch:

• d7268fa: 8251942: PrintStream specification is not clear which flush method is automatically invoked
• 8fa34e4: 8241619: (fs) Files.newByteChannel(path, Set.of(CREATE_NEW, READ)) does not throw a FileAlreadyExistsException when the file exists

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
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.

[zhengyu123]

/integrate

[openjdk]

@zhengyu123 Since your change was applied there have been 23 commits pushed to the master branch:

• e55aa41: 8263899: HttpClient throws NPE in AuthenticationFilter when parsing www-authenticate head
• 6c0fbf7: 8254196: jshell infinite loops when startup script contains System.exit call
• a79f095: 8263721: Unify oop casting
• 329697b: 8263358: Update java.lang to use instanceof pattern variable
• ae9af57: 8264001: JFR: Modernize implementation
• fad8484: 8263411: Convert jshell tool to use Stream.toList()
• 06d46d6: 8264008: Incorrect metaspace statistics after JEP 387 when UseCompressedClassPointers is off
• 45e1bab: 8264091: Use the blessed modifier order in java.logging
• cb776ed: 8263981: java.awt.image.ComponentSampleModel equals/hashcode use numBands twice
• da512bf: 8264050: Remove unused field VM_HeapWalkOperation::_collecting_heap_roots
• ... and 13 more: https://git.openjdk.java.net/jdk/compare/e9321cdc41c56c9e1c08acb1d0bacf98b12a7458...master

Your commit was automatically rebased without conflicts.

Pushed as commit 9ee0b9a.

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