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

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

Issue

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

Reviewers

• Paul Hohensee (@phohensee - Reviewer)

Reviewing

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$ 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

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Checkout this PR locally:
$ git pr checkout 701

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https://git.openjdk.org/jdk8u-dev/pull/701.diff

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Link to Webrev Comment

[bridgekeeper[bot]]

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[openjdk[bot]]

❗ This change is not yet ready to be integrated. See the Progress checklist in the description for automated requirements.

[openjdk[bot]]

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

[bridgekeeper[bot]]

@antonvoznia This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply issue a /touch or /keepalive command to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[mlbridge[bot]]

Webrevs

• 00: Full (15ed07b3)

[openjdk[bot]]

⚠️ @antonvoznia 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.

[antonvoznia]

@phohensee thank you!

/approval request Clean backport to solve the issue in jdk8. I didn't take #include <sysinfoapi.h> in the backport as redundant include. The changes were tested.

[openjdk[bot]]

@antonvoznia 8351359: The approval request has been created successfully.