8264050: Remove unused field VM_HeapWalkOperation::_collecting_heap_roots

[shipilev]

SonarCloud reports field _collecting_heap_roots is not initialized after constructor ends. In fact, that field is not used anywhere. It was like that since the initial load. We can trivially remove it.

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Progress

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Issue

• JDK-8264050: Remove unused field VM_HeapWalkOperation::_collecting_heap_roots

Reviewers

• Coleen Phillimore (@coleenp - Reviewer)
• Thomas Schatzl (@tschatzl - Reviewer)

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$ git checkout pull/3153

To update a local copy of the PR:
$ git checkout pull/3153
$ git pull https://git.openjdk.java.net/jdk pull/3153/head

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[openjdk]

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[mlbridge]

Webrevs

• 00: Full (111e26e)

[coleenp]

SCCS says it was used once. Thanks for removing it.

[openjdk]

@shipilev 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:

8264050: Remove unused field VM_HeapWalkOperation::_collecting_heap_roots

Reviewed-by: coleenp, tschatzl

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 8 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
• e9321cd: 8263964: Redundant check in ObjectStartArray::object_starts_in_range
• bd7a184: 8263442: Potential bug in jdk.internal.net.http.common.Utils.CONTEXT_RESTRICTED
• 2335362: 8264032: Improve thread safety of Runtime.version()
• 8c1ab38: 8263766: Confusing specification of JEditorPaneAccessibleHypertextSupport constructor
• 5bc382f: 8263976: Remove block allocation from BasicHashtable
• fbd57bd: 8263260: [s390] Support latest hardware (z14 and z15)

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.

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[tschatzl]

Lgtm and trivial.

[shipilev]

/integrate

[openjdk]

@shipilev Since your change was applied there have been 19 commits pushed to the master branch:

• 6e3a158: 8263352: assert(use == polladr) failed: the use should be a safepoint polling
• 8d63bb6: 8260565: JFR: Fix copyright header in tests
• 0b2aa1b: 8263978: Clarify why 0 argument is ignored in SecureRandom::setSeed
• 15bcf6d: 8264055: backout JDK-8248904 in order to resubmit with additional attribution.
• 2425462: 8263903: Use Cleaner instead of finalize to auto stop Timer thread
• 35102cb: 8263992: Remove dead code NativeLookup::base_library_lookup
• 91d86e6: 8263572: Output from jstack mixed mode is misaligned
• 47ef038: 8263905: Remove finalize methods for SocketInput/OutputStream
• 1c9817b: 8261479: CDS runtime code should check exceptions
• 087c8bf: 8264041: Incorrect comments for ParallelCompactData::summarize_dense_prefix
• ... and 9 more: https://git.openjdk.java.net/jdk/compare/de2ff25687b2f19e5d4ea4efb6c973ad879f32f7...master

Your commit was automatically rebased without conflicts.

Pushed as commit da512bf.

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