RFR: 8315131: Clarify VarHandle set/get access on 32-bit platforms [v4]

[Chen Liang]

On Thu, 17 Jul 2025 18:18:21 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Chen Liang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   avoid "non-atomic"
>
> src/java.base/share/classes/java/lang/foreign/MemoryLayout.java line 281:
> 
>> 279:  * <li>read write access modes for all {@code T}.  Access modes {@code get} and
>> 280:  *     {@code set} for {@code long}, {@code double} and {@code MemorySegment}
>> 281:  *     are supported but have no atomicity guarantee; in particular, the
> 
> I think just a quick reference to the spec is fine, something like "are supported but provide no atomicity guarantees, as described in Section 17.7 of The Java Language Specification"

Sure, I will simplify this.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/26258#discussion_r2214007372