8282947: JFR: Dump on shutdown live-locks in some conditions

[kvergizova]

I'd like to backport JDK-8282947 to 15u for parity with 11u.
The patch applies cleanly.
Tested with jdk/jfr and tier1 tests; added test fails without the patch and passes with it on Linux.

---

Progress

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

Issue

• JDK-8282947: JFR: Dump on shutdown live-locks in some conditions

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk15u-dev pull/262/head:pull/262
$ git checkout pull/262

Update a local copy of the PR:
$ git checkout pull/262
$ git pull https://git.openjdk.org/jdk15u-dev pull/262/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 262

View PR using the GUI difftool:
$ git pr show -t 262

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk15u-dev/pull/262.diff

[bridgekeeper]

👋 Welcome back evergizova! 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]

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

After integration, the commit message for the final commit will be:

8282947: JFR: Dump on shutdown live-locks in some conditions

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 6 new commits pushed to the master branch:

• e7fdc3a: 8283441: C2: segmentation fault in ciMethodBlocks::make_block_at(int)
• 03bf615: 7131823: bug in GIFImageReader
• 297b967: 8286594: (zipfs) Mention paths with dot elements in ZipException and cleanups
• a8a3104: 8282071: Update java.xml module-info
• 3bcf79b: 8261354: SIGSEGV at MethodIteratorHost
• 0ec5a52: 8269039: Disable SHA-1 Signed JARs

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.

[mlbridge]

Webrevs

• 00: Full (5b54e65d)

[kvergizova]

/integrate

[openjdk]

Going to push as commit 68f09d4.
Since your change was applied there have been 6 commits pushed to the master branch:

• e7fdc3a: 8283441: C2: segmentation fault in ciMethodBlocks::make_block_at(int)
• 03bf615: 7131823: bug in GIFImageReader
• 297b967: 8286594: (zipfs) Mention paths with dot elements in ZipException and cleanups
• a8a3104: 8282071: Update java.xml module-info
• 3bcf79b: 8261354: SIGSEGV at MethodIteratorHost
• 0ec5a52: 8269039: Disable SHA-1 Signed JARs

Your commit was automatically rebased without conflicts.

[openjdk]

@kvergizova Pushed as commit 68f09d4.

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