8345684: OperatingSystemMXBean.getSystemCpuLoad() throws NPE

[fmeum]

Hi all,

This pull request contains a backport of commit d7ef3ac0 from the openjdk/jdk repository.

The commit being backported was authored by Fabian Meumertzheim on 9 Dec 2024 and was reviewed by David Holmes, Kevin Walls and Severin Gehwolf.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8345684 needs maintainer approval

Issue

• JDK-8345684: OperatingSystemMXBean.getSystemCpuLoad() throws NPE (Bug - P4 - Requested)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk24u.git pull/4/head:pull/4
$ git checkout pull/4

Update a local copy of the PR:
$ git checkout pull/4
$ git pull https://git.openjdk.org/jdk24u.git pull/4/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 4

View PR using the GUI difftool:
$ git pr show -t 4

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk24u/pull/4.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back fmeum! 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 change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

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

[openjdk]

⚠️ @fmeum 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.

[fmeum]

/approval request This is a safe fix (additional null check) for a flaky unexpected NPE.

[openjdk]

@fmeum
8345684: The approval request has been created successfully.

[mlbridge]

Webrevs

• 00: Full (8f608fed)