8327137: Add test for ConcurrentModificationException in BasicDirectoryModel

[luchenlin]

I backport this for parity with 21.0.3-oracle.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8327137 needs maintainer approval

Issue

• JDK-8327137: Add test for ConcurrentModificationException in BasicDirectoryModel (Bug - P4 - Approved)

Reviewing

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$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/584/head:pull/584
$ git checkout pull/584

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$ git checkout pull/584
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/584/head

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$ git pr checkout 584

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https://git.openjdk.org/jdk21u-dev/pull/584.diff

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[bridgekeeper]

👋 Welcome back andrewlu! 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]

@luchenlin 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:

8327137: Add test for ConcurrentModificationException in BasicDirectoryModel

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 136 new commits pushed to the master branch:

• c08de56: 8332825: ubsan: guardedMemory.cpp:35:11: runtime error: null pointer passed as argument 2, which is declared to never be null
• 762e983: 8317831: compiler/codecache/CheckLargePages.java fails on OL 8.8 with unexpected memory string
• 8cb3b1f: 8269428: java/util/concurrent/ConcurrentHashMap/ToArray.java timed out
• 710a0b0: 8327787: Convert javax/swing/border/Test4129681.java applet test to main
• 28c16d4: 8331575: C2: crash when ConvL2I is split thru phi at LongCountedLoop
• 8ca5280: 8322996: BoxLockNode creation fails with assert(reg < CHUNK_SIZE) failed: sanity
• d2f857a: 8317299: safepoint scalarization doesn't keep track of the depth of the JVM state
• 9a392ea: 8323972: C2 compilation fails with assert(!x->as_Loop()->is_loop_nest_inner_loop()) failed: loop was transformed
• dba6716: 8321278: C2: Partial peeling fails with assert "last_peel <- first_not_peeled"
• df03054: 8319793: C2 compilation fails with "Bad graph detected in build_loop_late" after JDK-8279888
• ... and 126 more: https://git.openjdk.org/jdk21u-dev/compare/2dc90b51516e0a04878dd0f5e9a6a704977a36f7...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]

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

[openjdk]

⚠️ @luchenlin 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

• 00: Full (c0326f24)

[TheRealMDoerr]

We should postpone this one. There are more backports needed. We got:
Exception in Basic L&F File Loading Thread: class java.util.ConcurrentModificationException
java.util.ConcurrentModificationException
at java.base/java.util.AbstractList$SubList.checkForComodification(AbstractList.java:906)

[luchenlin]

postpone this one due to some related issues.

[luchenlin]

/integrate

[openjdk]

Going to push as commit aeae521.
Since your change was applied there have been 141 commits pushed to the master branch:

• b0894f2: 8328011: Convert java/awt/Frame/GetBoundsResizeTest/GetBoundsResizeTest.java applet test to main
• 7cf4272: 8327650: Test java/nio/channels/DatagramChannel/StressNativeSignal.java timed out
• 71a035a: 8317635: Improve GetClassFields test to verify correctness of field order
• a30e9c6: 8318071: IgnoreUnrecognizedVMOptions flag still causes failure in ArchiveHeapTestClass
• a1e43d9: 8323274: C2: array load may float above range check
• c08de56: 8332825: ubsan: guardedMemory.cpp:35:11: runtime error: null pointer passed as argument 2, which is declared to never be null
• 762e983: 8317831: compiler/codecache/CheckLargePages.java fails on OL 8.8 with unexpected memory string
• 8cb3b1f: 8269428: java/util/concurrent/ConcurrentHashMap/ToArray.java timed out
• 710a0b0: 8327787: Convert javax/swing/border/Test4129681.java applet test to main
• 28c16d4: 8331575: C2: crash when ConvL2I is split thru phi at LongCountedLoop
• ... and 131 more: https://git.openjdk.org/jdk21u-dev/compare/2dc90b51516e0a04878dd0f5e9a6a704977a36f7...master

Your commit was automatically rebased without conflicts.

[openjdk]

@luchenlin Pushed as commit aeae521.

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

[luchenlin]

/integrate

[openjdk]

@luchenlin The command integrate can only be used in open pull requests.