8267666: Add option to jcmd GC.heap_dump to use existing file

[RealCLanger]

Clean backport of this enhancement. CSR includes update releases.

---

Progress

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Issue

• JDK-8267666: Add option to jcmd GC.heap_dump to use existing file

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk17u pull/2/head:pull/2
$ git checkout pull/2

Update a local copy of the PR:
$ git checkout pull/2
$ git pull https://git.openjdk.java.net/jdk17u pull/2/head

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Checkout this PR locally:
$ git pr checkout 2

View PR using the GUI difftool:
$ git pr show -t 2

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Download this PR as a diff file:
https://git.openjdk.java.net/jdk17u/pull/2.diff

[bridgekeeper]

👋 Welcome back clanger! 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]

@RealCLanger 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:

8267666: Add option to jcmd GC.heap_dump to use existing file

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 (61b86f65)

[RealCLanger]

/integrate

[openjdk]

Going to push as commit 9b6aa53.
Since your change was applied there have been 198 commits pushed to the master branch:

• de786bb: 8269882: stack-use-after-scope in NewObjectA
• c6812be: Merge
• c130451: 8269752: C2: assert(false) failed: Bad graph detected in build_loop_late
• 2dddcce: 8270858: Problem List java/awt/Window/MultiWindowApp/MultiWindowAppTest.java on Linux
• 1350e2b: 8270556: Exclude security/infra/java/security/cert/CertPathValidator/certification/LetsEncryptCA
• e104ded: 8268635: Corrupt oop in ClassLoaderData
• 00ffb8f: 8263531: Remove unused buffer int
• d684356: 8262731: [macOS] Exception from "Printable.print" is swallowed during "PrinterJob.print"
• a32d2ee: 8269276: Additional tests for MessageDigest with different providers
• 7b4d84c: 8270422: Test build/AbsPathsInImage.java fails after JDK-8259848
• ... and 188 more: https://git.openjdk.java.net/jdk17u/compare/9ad19f7838e6f6e128583c191c5507c1e2bd5083...master

Your commit was automatically rebased without conflicts.

[openjdk]

@RealCLanger Pushed as commit 9b6aa53.

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