8361404: Parallel: Group all class unloading logc at the end of marking phase

[albertnetymk]

Simple patch of moving some out-of-place ClassLoaderDataGraph logic to the end of marking-phase in order group all class unloading logic at the same scope/site.

Test: tier1-8

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Progress

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Issue

• JDK-8361404: Parallel: Group all class unloading logc at the end of marking phase (Enhancement - P4)

Reviewers

• Thomas Schatzl (@tschatzl - Reviewer)

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[openjdk]

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

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8361404: Parallel: Group all class unloading logc at the end of marking phase

Reviewed-by: tschatzl

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At the time when this comment was updated there had been 27 new commits pushed to the master branch:

• 7b255b8: 8361397: Rework CompileLog list synchronization
• 310ef85: 8305567: serviceability/tmtools/jstat/GcTest01.java failed utils.JstatGcResults.assertConsistency
• 5205eae: 8346753: Test javax/swing/JMenuItem/RightLeftOrientation/RightLeftOrientation.java fails on Windows Server 2025 x64 because the icons of RBMenuItem and CBMenuItem are not visible in Nimbus LookAndFeel
• ... and 24 more: https://git.openjdk.org/jdk/compare/56ebb8c1b936e5a4c14486153c9f60df705095ad...master

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[mlbridge]

Webrevs

• 00: Full (56d5ad52)

[tschatzl]

lgtm. Do not know why I did the original change that way... :(