RFR: 8361325: Refactor ClassLoaderExt

[Serguei Spitsyn]

On Thu, 3 Jul 2025 05:16:54 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

> After the refactoring work done via [JDK-8280682](https://bugs.openjdk.org/browse/JDK-8280682), there are only three functions remaining in the ClassLoaderExt class. This RFE is to move those remaining functions into other classes so that the ClassLoaderExt class can be eliminated.
> 
> Testing: passed tiers 1 - 5.

It looks good to me. I like this simplification.
But I'm curious what was the original reason to have the `classLoaderExt`?

src/hotspot/share/cds/classListParser.cpp line 33:

> 31: #include "cds/metaspaceShared.hpp"
> 32: #include "cds/unregisteredClasses.hpp"
> 33: #include "classfile/classLoader.hpp"

Nit: I wonder if the line #33 is really needed and can be removed.

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Marked as reviewed by sspitsyn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/26110#pullrequestreview-2983562923
PR Review Comment: https://git.openjdk.org/jdk/pull/26110#discussion_r2183031189