8316178: Better diagnostic header for CodeBlobs

[shipilev]

Semi-clean backport to improve JVM diagnostics. Does not apply cleanly because context is quite a bit different in JDK 11.

Additional testing:

• Eyeballing the VM output

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

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

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk11u-dev.git pull/2137/head:pull/2137
$ git checkout pull/2137

Update a local copy of the PR:
$ git checkout pull/2137
$ git pull https://git.openjdk.org/jdk11u-dev.git pull/2137/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 2137

View PR using the GUI difftool:
$ git pr show -t 2137

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk11u-dev/pull/2137.diff

Webrev

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[bridgekeeper]

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[openjdk]

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

[openjdk]

@shipilev This change now passes all automated pre-integration checks.

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 no new commits pushed to the master 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.

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[mlbridge]

Webrevs

• 00: Full (9e66c3c6)

[shipilev]

Push approval granted.

/integrate

[openjdk]

Going to push as commit b2a6484.
Since your change was applied there have been 4 commits pushed to the master branch:

• cdc33dc: 8313815: The exception messages printed by jcmd ManagementAgent.start are corrupted on Japanese Windows
• 72d97e0: 8307079: Update test java/awt/Choice/DragOffNoSelect.java
• cd3c64f: 8306430: Open source some AWT tests related to TextComponent and Toolkit
• ce1602d: 8265586: [windows] last button is not shown in AWT Frame with BorderLayout and MenuBar set.

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit b2a6484.

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