8282642: vmTestbase/gc/gctests/LoadUnloadGC2/LoadUnloadGC2.java fails intermittently with exit code 1

[rsunderbabu]

LoadUnloadGC2 tests the Class unloading during GC. In order to trigger the GC, lots of memory is created at a short interval. Instead of GC getting triggered, the test quickly gets into OOME.
Using WhiteBox.fullGC is a cleaner and deterministic way to trigger GC.

---

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Issue

• JDK-8282642: vmTestbase/gc/gctests/LoadUnloadGC2/LoadUnloadGC2.java fails intermittently with exit code 1

Reviewers

• Leonid Mesnik (@lmesnik - Reviewer)

Reviewing

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[bridgekeeper]

👋 Welcome back rsunderbabu! 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]

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[mlbridge]

Webrevs

• 01: Full - Incremental (18447296)
• 00: Full (f3b9121d)

[lmesnik]

We need to create some classes to unload them. Are they created?

[rsunderbabu]

I missed that part. I will correct it.

[lmesnik]

Looks good, please verify that it works with ZGC, ParallelGC, SerialGC.

[openjdk]

@rsunderbabu 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:

8282642: vmTestbase/gc/gctests/LoadUnloadGC2/LoadUnloadGC2.java fails intermittently with exit code 1

Reviewed-by: lmesnik

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At the time when this comment was updated there had been 138 new commits pushed to the master branch:

• 8e2c006: 8291957: Redundant import statements in sun.security.ec
• ae52053: 8291954: Use Optional.isEmpty instead of !Optional.isPresent in java.base
• 87cda21: Merge
• 5963300: 8290562: ThreadMXBean.getThread{Cpu,User}Time fails with -XX:-VMContinuations
• 0657acf: 8289249: Add methods to Elements for record constructors
• b66a0d1: 8291992: [REDO2] ProblemList multiple tests in -Xcomp mode due to JDK-8291649
• 9bff3b7: 8291990: [REDO] ProblemList multiple tests in -Xcomp mode due to JDK-8291649
• f9bb367: 8291653: G1 refinement incorrectly expects always-valid HeapRegion out of the Hot Card Cache
• b17a745: 8291637: HttpClient default keep alive timeout not followed if server sends invalid value
• 0da4314: 8288732: Reduce runtime of java.util.concurrent microbenchmarks
• ... and 128 more: https://git.openjdk.org/jdk/compare/350808a5a3cbaa097c3360bfca9af6d90f1b223b...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.

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[rsunderbabu]

Looks good, please verify that it works with ZGC, ParallelGC, SerialGC.

@lmesnik I have tested with all the GC options.

[rsunderbabu]

/integrate

[openjdk]

@rsunderbabu
Your change (at version 1844729) is now ready to be sponsored by a Committer.

[lmesnik]

/sponsor

[openjdk]

Going to push as commit 7db5abd.
Since your change was applied there have been 149 commits pushed to the master branch:

• 124fc4a: 8290180: Convert com/sun/management/UnixOperatingSystemMXBean/GetOpenFileDescriptorCount.sh to jtreg java version
• 4591937: 8290357: Drop HeapRegion::marked_bytes()
• 7676be8: 8291037: Move PLAB resizing mechanism to G1EvacStats
• 861cc67: 8291897: TerminatingThreadLocal(s) not registered from virtual thread(s)
• 8d88be2: 8291459: JVM crash with GenerateOopMap::error_work(char const*, __va_list_tag*)
• 8a804f6: 8291454: Missing check for JLI C runtime library in CoreLibraries.gmk
• 5a539e8: 8291893: riscv: remove fence.i used in user space
• b2f0cbd: 8064787: [macosx] In Nimbus LaF, Ctrl+Alt mnemonic doesn't work
• 891df21: 8259687: JTabbedPane.setComponentAt doesn't hide previously visible tab component
• d4fb91b: 8291956: Simplify the loop condition in sun.net.httpserver.Request constructor
• ... and 139 more: https://git.openjdk.org/jdk/compare/350808a5a3cbaa097c3360bfca9af6d90f1b223b...master

Your commit was automatically rebased without conflicts.

[openjdk]

@lmesnik @rsunderbabu Pushed as commit 7db5abd.

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