8331572: Allow using OopMapCache outside of STW GC phases

[shipilev]

WIP. Unclean backport to improve GC and general stack walk performance when walking interpreted frames.

The point of uncleanliness comes from the way we hook up the cleanup notifications to Service Thread. In later JDKs, JDK-8329488 made Service Thread wake up regularly to do various cleanups. In JDK 21, we still need to hook up the clean up to the "usual" place in safepoint epilog.

Additional testing:

• Linux x86_64 server fastdebug, all

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• JDK-8331572 needs maintainer approval
• Commit message must refer to an issue
• JDK-8334594 needs maintainer approval

Issues

• JDK-8331572: Allow using OopMapCache outside of STW GC phases (Enhancement - P4)
• JDK-8334594: Generational ZGC: Deadlock after OopMap rewrites in 8331572 (Bug - P2)

Reviewers

• Paul Hohensee (@phohensee - Reviewer) ⚠️ Review applies to b2438fb7

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/610/head:pull/610
$ git checkout pull/610

Update a local copy of the PR:
$ git checkout pull/610
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/610/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 610

View PR using the GUI difftool:
$ git pr show -t 610

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/610.diff

Webrev

Link to Webrev Comment

[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]

❗ 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

• 01: Full - Incremental (9000a426)
• 00: Full (b2438fb7)

[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.

[shipilev]

/issue add JDK-8334594

[openjdk]

@shipilev
Adding additional issue to issue list: 8334594: Generational ZGC: Deadlock after OopMap rewrites in 8331572.