8316178: Better diagnostic header for CodeBlobs

[shipilev]

Clean backport to improve JVM diagnostics.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8316178 needs maintainer approval

Issue

• JDK-8316178: Better diagnostic header for CodeBlobs (Enhancement - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u.git pull/183/head:pull/183
$ git checkout pull/183

Update a local copy of the PR:
$ git checkout pull/183
$ git pull https://git.openjdk.org/jdk21u.git pull/183/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 183

View PR using the GUI difftool:
$ git pr show -t 183

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u/pull/183.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back shade! 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]

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

[openjdk]

⚠️ @shipilev 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 (619f3da2)

[shipilev]

/approval request Clean diagnostic patch, low-risk; better JMH perfasm profiling in the near future.

[openjdk]

@shipilev The approval request has been created successfully.

[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:

8316178: Better diagnostic header for CodeBlobs

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 9 new commits pushed to the master branch:

• fa64237: 8314632: Intra-case dominance check fails in the presence of a guard
• 742ff74: 8314226: Series of colon-style fallthrough switch cases with guards compiled incorrectly
• cea4062: 8316031: SSLFlowDelegate should not log from synchronized block
• c0adad2: 8316400: Exclude jdk/jfr/event/runtime/TestResidentSetSizeEvent.java on AIX
• c86bad5: 8316387: Exclude more failing multicast tests on AIX after JDK-8315651
• b9f54bd: 8315651: Stop hiding AIX specific multicast socket errors via NetworkConfiguration (aix)
• f33c9a3: 8313244: NM flags handling in configure process
• b8c5a9a: 8315579: SPARC64 builds are broken after JDK-8304913
• 2155ada: 8313206: PKCS11 tests silently skip execution

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.

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

[shipilev]

Push approval granted.

/integrate

[openjdk]

Going to push as commit 487a726.
Since your change was applied there have been 11 commits pushed to the master branch:

• 3b690f1: 8308592: Framework for CA interoperability testing
• e2bfc22: 8315578: PPC builds are broken after JDK-8304913
• fa64237: 8314632: Intra-case dominance check fails in the presence of a guard
• 742ff74: 8314226: Series of colon-style fallthrough switch cases with guards compiled incorrectly
• cea4062: 8316031: SSLFlowDelegate should not log from synchronized block
• c0adad2: 8316400: Exclude jdk/jfr/event/runtime/TestResidentSetSizeEvent.java on AIX
• c86bad5: 8316387: Exclude more failing multicast tests on AIX after JDK-8315651
• b9f54bd: 8315651: Stop hiding AIX specific multicast socket errors via NetworkConfiguration (aix)
• f33c9a3: 8313244: NM flags handling in configure process
• b8c5a9a: 8315579: SPARC64 builds are broken after JDK-8304913
• ... and 1 more: https://git.openjdk.org/jdk21u/compare/2f3e151106bf7f269f5c24f53236ea480285f297...master

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 487a726.

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