8331560: Refactor Hotspot container detection code so that subsystem delegates to controllers

[jankratochvil]

A patch 4 of 6 for: [21u] Backport intention of 8322420: [Linux] cgroup v2: Limits in parent nested control groups are not detected

It has a patch dependency on PR 3 of 6: #1650

This backport is clean.

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8331560 needs maintainer approval

Issue

• JDK-8331560: Refactor Hotspot container detection code so that subsystem delegates to controllers (Enhancement - P3)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/1651/head:pull/1651
$ git checkout pull/1651

Update a local copy of the PR:
$ git checkout pull/1651
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/1651/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1651

View PR using the GUI difftool:
$ git pr show -t 1651

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/1651.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back jkratochvil! 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.

[mlbridge]

Webrevs

• 00: Full (7323a075)

[jankratochvil]

Replaced by: #1662