8373086: Make isexceeded001.java more robust

[sendaoYan]

Hi all,

This pull request contains a backport of commit 4d696d0d from the openjdk/jdk repository.

The commit being backported was authored by Albert Mingkun Yang on 5 Dec 2025 and was reviewed by Joel Sikström and Thomas Schatzl.

Thanks!

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8373086: Make isexceeded001.java more robust (Bug - P4)

Reviewers

• Albert Mingkun Yang (@albertnetymk - Reviewer)
• Joel Sikström (@jsikstro - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/28694/head:pull/28694
$ git checkout pull/28694

Update a local copy of the PR:
$ git checkout pull/28694
$ git pull https://git.openjdk.org/jdk.git pull/28694/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 28694

View PR using the GUI difftool:
$ git pr show -t 28694

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/28694.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back syan! A progress list of the required criteria for merging this PR into jdk26 will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@sendaoYan 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:

8373086: Make isexceeded001.java more robust

Reviewed-by: ayang, jsikstro

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 no new commits pushed to the jdk26 branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the jdk26 branch, type /integrate in a new comment.

[openjdk]

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

[openjdk]

@sendaoYan The following label will be automatically applied to this pull request:

• serviceability

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

[mlbridge]

Webrevs

• 00: Full (446539f2)

[sendaoYan]

Change has been verified locally on linux-x64 by run the tests test/hotspot/jtreg/vmTestbase/nsk/monitoring/MemoryPoolMBean/isUsageThresholdExceeded/isexceeded00[1-5]/TestDescription.java. Thanks for the reviews.

/integrate

[openjdk]

Going to push as commit ec6beaa.
Since your change was applied there have been 2 commits pushed to the jdk26 branch:

• bf0bc37: 8373145: [BACKOUT] Remove ThreadLocalAllocBuffer::_reserve_for_allocation_prefetch
• 22fe707: 8370198: Test gc/arguments/TestShrinkHeapInSteps.java crashed: assert(left >= right) failed: avoid underflow

Your commit was automatically rebased without conflicts.

[openjdk]

@sendaoYan Pushed as commit ec6beaa.

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