8351359: OperatingSystemMXBean: values from getCpuLoad and getProcessCpuLoad are stale after 24.8 days (Windows)

[antonvoznia]

Hi,

It's a clean backport of JDK-8351359.
I didn't include #include <sysinfoapi.h> as it is in the original commit because of compilation problem.
Instead of that, there is already included windows.h that contains the GetTickCount64() function. It's redundant to include sysinfoapi.h.
The changes are related to Windows only.

Testing:

• manual testing code that calls getProcessCpuLoad() on windows server 2025, intel cpu
• testing x86 and x64 builds
• Pre-submit tests

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• JDK-8351359 needs maintainer approval
• Commit message must refer to an issue

Error

 ⚠️ OCA signatory status must be verified

Issue

• JDK-8351359: OperatingSystemMXBean: values from getCpuLoad and getProcessCpuLoad are stale after 24.8 days (Windows) (Bug - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk8u-dev.git pull/701/head:pull/701
$ git checkout pull/701

Update a local copy of the PR:
$ git checkout pull/701
$ git pull https://git.openjdk.org/jdk8u-dev.git pull/701/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 701

View PR using the GUI difftool:
$ git pr show -t 701

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk8u-dev/pull/701.diff

[bridgekeeper]

Hi @antonvoznia, welcome to this OpenJDK project and thanks for contributing!

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[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.