RFR: 8374190: Convert ConcurrentHashTable atomic lists to use Atomic<T>

[David Holmes]

On Mon, 22 Dec 2025 07:29:55 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Please review this change to ConcurrentHashTable to use `Atomic<Node*>` for
> the Node lists.  Note that this does not complete the replacement of direct
> uses of AtomicAccess by that class; there's still one more group remaining.
> 
> Testing: mach5 tier1-3

This all seems reasonable.

Thanks

src/hotspot/share/utilities/concurrentHashTable.hpp line 178:

> 176:     // assignment, thus here we must cast const part away. Method is not static
> 177:     // due to an assert.
> 178:     void release_assign_node_ptr(const Atomic<Node*>* dst, Node* node) const;

The `const` part of the comment no longer seems relevant.

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Marked as reviewed by dholmes (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28951#pullrequestreview-3606620703
PR Review Comment: https://git.openjdk.org/jdk/pull/28951#discussion_r2641999957