8364248: Separate commit and reservation limit detection

[shipilev]

This cleanup makes further backports in container code cleaner. Notably, it is on the way to JDK-8370572 backport. The full stack looks like this:

    Clean JDK-8370966: Create regression test for the hierarchical memory limit fix in JDK-8370572
(!) Clean JDK-8370572: Cgroups hierarchical memory limit is not honored after JDK-8322420
    Clean JDK-8292984: Refactor internal container-related interfaces for clarity
    Clean JDK-8356868: Not all cgroup parameters are made available
    Clean JDK-8367485: os::physical_memory is broken in 32-bit JVMs when running on 64-bit OSes
    Clean JDK-8357086: os::xxx functions returning memory size should return size_t
    Clean JDK-8357570: [macOS] os::Bsd::available_memory() might return too low values
>>> Clean JDK-8364248: Separate commit and reservation limit detection

Additional testing:

• Linux x86_64 server fastdebug, hotspot_gc

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8364248 needs maintainer approval

Issue

• JDK-8364248: Separate commit and reservation limit detection (Enhancement - P4 - Approved)

Reviewing

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$ git checkout pull/11

Update a local copy of the PR:
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$ git pull https://git.openjdk.org/jdk25u-dev.git pull/11/head

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[bridgekeeper]

👋 Welcome back shade! 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]

@shipilev 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:

8364248: Separate commit and reservation limit detection

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 20 new commits pushed to the master branch:

• f7eec4f: 8362284: RISC-V: cleanup NativeMovRegMem
• 6e169f6: 8366747: RISC-V: Improve VerifyMethodHandles for method handle linkers
• 78317c6: 8370197: Add missing @OverRide annotations in com.sun.beans package
• ... and 17 more: https://git.openjdk.org/jdk25u-dev/compare/796f2b42b07c150602acc98fe1a9ad69c5bc5d0d...master

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.

[openjdk]

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

[openjdk]

⚠️ @shipilev 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.

[mlbridge]

Webrevs

• 00: Full (9f0e5930)

[shipilev]

/approval request Cleanups the OS/GC interface a bit, and makes further backports in container code cleaner. Notably, it is on the way to JDK-8370572 backport. Applies cleanly. hotspot_gc tests pass. Risk is on lower side: this is mostly a refactoring, and has no bugtail since initial integration 4 months ago.

[openjdk]

@shipilev
8364248: The approval request has been created successfully.