<AWT Dev> [16] RFR 8252470: java/awt/dnd/DisposeFrameOnDragCrash/DisposeFrameOnDragTest.java fails on Windows

[Dmitry Markov]

Hi Phil,

I ran all client test using mach5. All related test passed, see https://mach5.us.oracle.com/mdash/jobs?search=id:dmarkov-jdk-client-20200828-1219-13803609 <https://mach5.us.oracle.com/mdash/jobs?search=id:dmarkov-jdk-client-20200828-1219-13803609>

Regards,
Dmitry

> On 28 Aug 2020, at 21:00, Philip Race <philip.race at oracle.com> wrote:
> 
> Looks Ok to me but please confirm that all related tests pass.
> 
> -phil. 
> 
> On 8/28/20, 12:54 PM, Dmitry Markov wrote:
>> 
>> Hello,
>> 
>> Could you review the fix for JDK 16, please?
>> 
>>  bug: https://bugs.openjdk.java.net/browse/JDK-8252470 <https://bugs.openjdk.java.net/browse/JDK-8252470>
>>  webrev: http://cr.openjdk.java.net/~dmarkov/8252470/webrev.00/ <http://cr.openjdk.java.net/%7Edmarkov/8252470/webrev.00/>
>> 
>> Problem description:
>> After integration of JDK-8232114 if an IME API is invoked from a DND call a hang may take place. 
>> The DND operation runs on a toolkit thread. The IME functions should be executed on the toolkit thread, as well. So if, for example, the IME function is called from one of the methods of DropTargetListener the corresponding IME message will be blocked in the toolkit thread message queue because because the toolkit thread is busy executing DND operation.
>> 
>> Fix: 
>> If DND operation is active then we shouldn’t post the IME messages to the toolkit thread queue and use SendMessage() function instead.
>> 
>> Regards,
>> Dmitry

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