RFR: 8344332: (bf) Migrate DirectByteBuffer away from jdk.internal.ref.Cleaner [v2]

[Roger Riggs]

On Mon, 19 May 2025 18:40:56 GMT, ExE Boss <duke at openjdk.org> wrote:

>> Kim Barrett has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   move jdk.internal.nio.Cleaner to sun.nio
>
> src/java.base/share/classes/java/nio/Direct-X-Buffer.java.template line 209:
> 
>> 207:         super(-1, 0, cap, cap, fd, isSync, segment);
>> 208:         address = addr;
>> 209: 	cleaner = (unmapper == null) ? null : BufferCleaner.register(this, unmapper);
> 
> **OpenJDK** unfortunately uses the less accessible spaces[^1]:
> Suggestion:
> 
>         cleaner = (unmapper == null) ? null : BufferCleaner.register(this, unmapper);
> 
> 
> [^1]:	- prettier/prettier#7475
> 	- https://alexandersandberg.com/tabs-for-accessibility/

OpenJDK has not considered adoption of tabs-for-accessibility and sticks to using spaces across the codebase.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25289#discussion_r2096367503