8361639: JFR: Incorrect top frame for I/O events

[egahlin]

Could I have a review of the change that ensures that the top frame for I/O events is not an internal JDK method, such as FileReadEvent::offer? This change is dependent on JDK-8361640.

Testing: tier1, tier2 + jdk/jdk/jfr

Thanks
Erik

---

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-8361639: JFR: Incorrect top frame for I/O events (Bug - P3)

Reviewers

• Markus Grönlund (@mgronlun - Reviewer)

Reviewing

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Update a local copy of the PR:
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$ git pull https://git.openjdk.org/jdk.git pull/26211/head

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[bridgekeeper]

👋 Welcome back egahlin! 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]

@egahlin 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:

8361639: JFR: Incorrect top frame for I/O events

Reviewed-by: mgronlun

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 440 new commits pushed to the master branch:

• 1819051: 8362390: AIX make fails in awt_GraphicsEnv.c
• be0161a: 8362429: AssertionError in File.listFiles(FileFilter | FilenameFilter)
• bc72f47: 8362088: CompressedKlassPointers::encode should be const correct
• ... and 437 more: https://git.openjdk.org/jdk/compare/e9216efefc12b04c372a0a7f47167c984be544b7...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]

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

• hotspot-jfr
• net

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

[mlbridge]

Webrevs

• 01: Full - Incremental (4b60c7a9)
• 00: Full (eded9cdc)

[egahlin]

/integrate

[openjdk]

Going to push as commit 1a6cbe4.
Since your change was applied there have been 441 commits pushed to the master branch:

• 3fd89be: 8362284: RISC-V: cleanup NativeMovRegMem
• 1819051: 8362390: AIX make fails in awt_GraphicsEnv.c
• be0161a: 8362429: AssertionError in File.listFiles(FileFilter | FilenameFilter)
• ... and 438 more: https://git.openjdk.org/jdk/compare/e9216efefc12b04c372a0a7f47167c984be544b7...master

Your commit was automatically rebased without conflicts.

[openjdk]

@egahlin Pushed as commit 1a6cbe4.

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

[egahlin]

/backport :jdk25

[openjdk]

@egahlin the backport was successfully created on the branch backport-egahlin-1a6cbe42-jdk25 in my personal fork of openjdk/jdk. To create a pull request with this backport targeting openjdk/jdk:jdk25, just click the following link:

➡️ Create pull request

The title of the pull request is automatically filled in correctly and below you find a suggestion for the pull request body:

Hi all,

This pull request contains a backport of commit 1a6cbe42 from the openjdk/jdk repository.

The commit being backported was authored by Erik Gahlin on 17 Jul 2025 and was reviewed by Markus Grönlund.

Thanks!

If you need to update the source branch of the pull then run the following commands in a local clone of your personal fork of openjdk/jdk:

$ git fetch https://github.com/openjdk-bots/jdk.git backport-egahlin-1a6cbe42-jdk25:backport-egahlin-1a6cbe42-jdk25
$ git checkout backport-egahlin-1a6cbe42-jdk25
# make changes
$ git add paths/to/changed/files
$ git commit --message 'Describe additional changes made'
$ git push https://github.com/openjdk-bots/jdk.git backport-egahlin-1a6cbe42-jdk25