8266490: Extend the OSContainer API to support the pids controller of cgroups

[MBaesken]

The backport of 8266490 does not apply cleanly. Some copyright years need adjustment. The code in os_linux.cpp is slightly different in 11 compared to 17 and needs manual adjustment. TestPids.java needs change in the "run driver" line regarding whitebox (adjusted to jdk11 needs).

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Progress

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• Commit message must refer to an issue
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Issue

• JDK-8266490: Extend the OSContainer API to support the pids controller of cgroups

Reviewers

• Martin Doerr (@TheRealMDoerr - Reviewer)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk11u-dev pull/1089/head:pull/1089
$ git checkout pull/1089

Update a local copy of the PR:
$ git checkout pull/1089
$ git pull https://git.openjdk.java.net/jdk11u-dev pull/1089/head

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Checkout this PR locally:
$ git pr checkout 1089

View PR using the GUI difftool:
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Download this PR as a diff file:
https://git.openjdk.java.net/jdk11u-dev/pull/1089.diff

[bridgekeeper]

👋 Welcome back mbaesken! 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.

[mlbridge]

Webrevs

• 01: Full - Incremental (c80ce259)
• 00: Full (37866f4a)

[TheRealMDoerr]

Original change modifies Copyright of cgroupV2Subsystem_linux.cpp. Please add that before integrating. Otherwise, lgtm.

[openjdk]

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

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

8266490: Extend the OSContainer API to support the pids controller of cgroups

Reviewed-by: mdoerr

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 1 new commit pushed to the master branch:

• 0056b9b: 8227389: Remove unsupported xlc16 compile options on aix

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.

[MBaesken]

Original change modifies Copyright of cgroupV2Subsystem_linux.cpp. Please add that before integrating. Otherwise, lgtm.

Hi Martin, the Copyright was already changed by other backports, see
https://github.com/openjdk/jdk11u-dev/blob/master/src/hotspot/os/linux/cgroupV2Subsystem_linux.cpp#L2

so it does not need to changed in this PR:

[TheRealMDoerr]

Original change modifies Copyright of cgroupV2Subsystem_linux.cpp. Please add that before integrating. Otherwise, lgtm.

Hi Martin, the Copyright was already changed by other backports, see https://github.com/openjdk/jdk11u-dev/blob/master/src/hotspot/os/linux/cgroupV2Subsystem_linux.cpp#L2

so it does not need to changed in this PR:

Ok. So, only adding the empty line would be nice.

[MBaesken]

Ok. So, only adding the empty line would be nice.

Done, added an empty line to os_linux.cpp .

[MBaesken]

/integrate

[openjdk]

Going to push as commit 372af6a.
Since your change was applied there have been 53 commits pushed to the master branch:

• 78aeb51: 8274517: java/util/DoubleStreamSums/CompensatedSums.java fails with expected [true] but found [false]
• 71544cb: 8269517: compiler/loopopts/TestPartialPeelingSinkNodes.java crashes with -XX:+VerifyGraphEdges
• 6ff4ba2: 8267271: Fix gc/arguments/TestNewRatioFlag.java expectedNewSize calculation
• c6e4a44: 8183372: Refactor java/lang/Class shell tests to java
• bf0ebd2: 8223575: add subspace transitions to gc+metaspace=info log lines
• 39109e5: 8209736: runtime/RedefineTests/ModifyAnonymous.java fails with NullPointerException when running in CDS mode
• cc6137c: 8069343: Improve gc/g1/TestHumongousCodeCacheRoots.java to use jtreg @requires
• a87bfb8: 8286114: [test] show real exception in bomb call in sun/rmi/runtime/Log/checkLogging/CheckLogging.java
• bb5d2bb: 8239902: [macos] Remove direct usage of JSlider, JProgressBar classes in CAccessible class
• 16d0b7d: 8210107: vmTestbase/nsk/stress/network tests fail with Cannot assign requested address (Bind failed)
• ... and 43 more: https://git.openjdk.org/jdk11u-dev/compare/c9d3291e2744ab18f3cf00ef852b70abdc800855...master

Your commit was automatically rebased without conflicts.

[openjdk]

@MBaesken Pushed as commit 372af6a.

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