8261036: Reduce classes loaded by CleanerFactory initialization

[cl4es]

This patch refactors CleanerFactory and InnocuousThread so that we need to load fewer PrivilegedActions. This slightly reduce the number of classes we always load on bootstrap, slightly reducing static and dynamic footprint (default CDS archive -4Kb).

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Progress

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Issue

• JDK-8261036: Reduce classes loaded by CleanerFactory initialization

Reviewers

• Roger Riggs (@RogerRiggs - Reviewer) ⚠️ Review applies to 89a16eb

Download

$ git fetch https://git.openjdk.java.net/jdk pull/2380/head:pull/2380
$ git checkout pull/2380

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[openjdk]

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[mlbridge]

Webrevs

• 03: Full - Incremental (a56d9a3)
• 02: Full - Incremental (89a16eb)
• 01: Full - Incremental (043067e)
• 00: Full (e7951e3)

[openjdk]

@cl4es 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:

8261036: Reduce classes loaded by CleanerFactory initialization

Reviewed-by: rriggs

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 30 new commits pushed to the master branch:

• 2be60e3: 8257988: Remove JNF dependency from libsaproc/MacosxDebuggerLocal.m
• f025bc1: 8260301: misc gc/g1/unloading tests fails with "RuntimeException: Method could not be enqueued for compilation at level N"
• 4a8b5c1: 8257858: [macOS]: Remove JNF dependency from libosxsecurity/KeystoreImpl.m
• 472bf62: 8258799: [Testbug] RandomCommandsTest must check if tested directive is added via jcmd
• b0ee7a8: 8241995: Clarify InetSocketAddress::toString specification
• 0ef93fe: 8259265: Refactor UncaughtExceptions shell test as java test.
• 5324b5c: 8260998: Shenandoah: Restore reference processing statistics reporting
• c8de943: 8260617: Merge ZipFile encoding check with the initial hash calculation
• ae2c5f0: 8260581: IGV: enhance node search
• 9037615: 8222850: jshell tool: Misleading cascade compiler error in switch expression with undefined vars
• ... and 20 more: https://git.openjdk.java.net/jdk/compare/ddd2951ba91fe3860b92d2f9bad4e0d900f1d650...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.

[cl4es]

/integrate

[openjdk]

@cl4es Since your change was applied there have been 49 commits pushed to the master branch:

• e8ad8b3: 8259956: jdk.jfr.internal.ChunkInputStream#available should return the sum of remaining available bytes
• 06b33a0: 8261107: ArrayIndexOutOfBoundsException in the ICC_Profile.getInstance(InputStream)
• 60f440d: 6436374: Graphics.setColor(null) is not documented
• 82028e7: 8260012: Reduce inclusion of collectedHeap.hpp and heapInspection.hpp
• 9b7a8f1: Merge
• 1a7040e: 8259794: Remove EA from JDK 16 version string starting with Initial RC promotion on Feb 04, 2021(B35)
• afd5eef: 8260704: ParallelGC: oldgen expansion needs release-store for _end
• 081fa3e: 8260927: StringBuilder::insert is incorrect without Compact Strings
• ed1a775: 8258378: Final nroff manpage update for JDK 16
• 21f8bf4: 8257215: JFR: Events dropped when streaming over a chunk rotation
• ... and 39 more: https://git.openjdk.java.net/jdk/compare/ddd2951ba91fe3860b92d2f9bad4e0d900f1d650...master

Your commit was automatically rebased without conflicts.

Pushed as commit 992b500.

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