Hi Minoru,
>
> Thank you for your information. I built grizzly-framework jar with
> revision 3055, but the problem was not solved. I'll try to fix the
> problem
> without using synchronized blcok.
Oh, sorry.
I really doubt it's not possible to solve this completely without
synchronization.
And I'm starting to think about removing Context cacheing at all. So
for each I/O event we will create new Context. Cause I expect caching
(synchronization + Context reseting) is probably more expensive, than
creation of new Context object.
What do you think?
Thanks.
WBR,
Alexey.
>
>
>
> Minoru
>
>
>> Hi Minoru,
>>
>>>
>>> I tested my program with grizzly-
>>> framework-1.9.15-20090423.170629-3.jar
>>> and grizzly-utils-1.9.15-20090423.170629-3.jar. Unfortunately the
>>> result
>>> was as same as before. I investigated the problem a little, and I
>>> found
>>> out that instance of SelectionKeyContextTask was actually a
>>> CallbackHandlerContextTask.
>> May be fix is not there. I made change on 24.04.2009
>> "
>> Author: oleksiys
>> Date: 2009-04-24 15:18:20+0000
>> New Revision: 3055
>>
>> Modified:
>> trunk/code/modules/grizzly/src/main/java/com/sun/grizzly/
>> ContextTask.java
>>
>> Log:
>> fix NPE
>>
>> https://grizzly.dev.java.net/source/browse/grizzly/trunk/code/modules/grizzly/src/main/java/com/sun/grizzly/ContextTask.java?view=diff&rev=3055&p1=trunk/code/modules/grizzly/src/main/java/com/sun/grizzly/ContextTask.java&p2=trunk/code/modules/grizzly/src/main/java/com/sun/grizzly/ContextTask.java&r1=3054&r2=3055
>>
>>
>>
>>> CallbacHandlerContextTask is executed in a separate thread in
>>> principle.
>>> So I think SelectionKeyContextTask.call method must be thread safe
>>> (synchronized method). I modified the source code of Grizzly and
>>> tested it,
>>> then, NullPointerException did not occur.
>>>
>>> Does this make sense?
>> Yes, though we need to avoid synchronized, where it's possible. The
>> problem I've fixed is that we returned Context to pool and only then
>> recycled it. That's why, I expect, NPE was thrown.
>>
>> Thank you.
>>
>> WBR,
>> Alexey.
>>
>>>
>>>
>>> Thanks,
>>>
>>> Minoru
>>>
>>>> Hi Minoru,
>>>>
>>>> can you pls. try the latest 1.9.15 built from sources (cause I'm
>>>> not
>>>> sure when snapshot will become available on maven)
>>>>
>>>> WBR,
>>>> Alexey.
>>>>
>>>
>>>
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>>
>
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