Hi Carsten, 

Thanks for your feed back.
I have opened SLING-2540 for this and attached a patch.

Regards, 

Timothee.

On 7/18/12 11:54 AM, "Carsten Ziegeler" <[email protected]> wrote:

>Hi,
>
>I think there is currently no better way in Sling, so I guess adding
>support for Callable to Sling's thread pool would be a good thing
>
>Regards
>Carsten
>
>2012/7/18 Timothee Maret <[email protected]>:
>> Hi,
>>
>> I would require to execute tasks mixing parallel and sequential
>>execution (Barrier synchronization).
>> As an example, we could take the following queue of tasks:
>>
>> queue: -->(task1)-->(task2, task3, task4)-->(task5)-->(task6,task7)
>>
>> Group of tasks = (task1, Š, taskn)
>> Groups of tasks are executed sequentially
>> Tasks in a group are executed in parallel
>>
>> I could achieve this by wrapping each task in a Callable,  submitting
>>them to an ExecutorService and implementing the barrier synchronization
>>based on the Future returned by the executor.
>> However, I noticed the sling's ThreadPool [0] is only processing
>>Runnable (no Callable) and thus I am wondering if there is a better way
>>to enable this synchronization in Sling (maybe using event queues).
>> Otherwise, it would be easy to add the Callable support.
>>
>> Regards,
>>
>> Timothee.
>>
>> [0] org.apache.sling.commons.threads.ThreadPool
>
>
>
>-- 
>Carsten Ziegeler
>[email protected]

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