RFR: 8353950: Clipboard interaction on Windows is unstable [v6]

[Abhishek Kumar]

On Wed, 4 Jun 2025 17:14:15 GMT, Matthias Bläsing <mblaesing at openjdk.org> wrote:

>> - Introduce a lock into WClipboard that protects the code between
>>   openClipboard/closeClipboard invocations.
>>   The native side does not allow to open the clipboard multiple
>>   times or share the opened clipboard between multiple threads.
>> 
>> - Remove of need to call openClipboard/closeClipboard from
>>   getClipboardFormats by using the win32 call
>>   GetUpdatedClipboardFormats
>> 
>> - Prevent a race-condition by not registering the connection
>>   between java and native side of clipboard multiple time, but
>>   just at construction time.
>
> Matthias Bläsing has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Limit running test only on windows

LGTM.
Verified the test case with the fix and don't see any assertions hit on Windows 11.

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Marked as reviewed by abhiscxk (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24614#pullrequestreview-2903824031