RFR: 8364544: Extract the checks of AtomicXxxFieldUpdater into a common place [v2]

[Steve Armstrong]

On Tue, 25 Nov 2025 03:06:09 GMT, Chen Liang <liach at openjdk.org> wrote:

>> Steve Armstrong has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Replace legacy ReflectUtil with modern Reflection API
>>   
>>   Replaced sun.reflect.misc.ReflectUtil with jdk.internal.reflect.Reflection
>>   in atomic field updaters. Added getFieldWithAccess() method and
>>   FieldAndModifiers record to FieldUpdaterUtil to consolidate field
>>   access checking logic.
>
> Changes requested by liach (Reviewer).

Thanks @liach! Refactored to use `findValidatedField()` as suggested. Much cleaner API - eliminates the redundant record and combines everything into one call.

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PR Comment: https://git.openjdk.org/jdk/pull/28464#issuecomment-3573661859