<Swing Dev> [9] Review Request for 8145787: [TEST_BUG][PIT] javax/swing/undo/UndoManager/AbstractDocumentUndoConcurrentTest.java fails with CannotUndoException

[Semyon Sadetsky]

On 4/11/2016 6:02 PM, Alexander Scherbatiy wrote:
> On 12/22/2015 4:47 PM, Semyon Sadetsky wrote:
>> Hello,
>>
>> Please review fix for JDK9:
>>
>> bug: https://bugs.openjdk.java.net/browse/JDK-8145787
>> webrev: http://cr.openjdk.java.net/~ssadetsky/8145787/webrev.00/
>>
>> This is a multithreading stress test in which the undo queue depth 
>> may reach zero sometimes occasionally. The corresponding checks were 
>> added.
>     What is the sequence of the threads leads that the exception is 
> thrown?
When undo() operation from t3 called more times than insertString() and 
remove() in t1 and t2. Note that undoOrRedo() in t3 is also may work as 
undo().

--Semyon
>
>    Thanks,
>    Alexandr.
>
>>
>> --Semyon
>>
>