[Qgis-developer] Fwd: Threads in sextante

[Victor Olaya]

Here is my opinion on all that, in short:

-The main idea of using threads is not now to execute multiplep
algorithms at the same time, so we can remove a lot of complexity
(like 2 processes writing the same file, as it was mentioned)

-Implementing a canceling mechanism is going to be the greatest
improvement once we have the threading stuff

-So, for me, this is what should be done:

  1)implementing the threading part
  2) implement the cancelling mechanism (a responsive cancel button, etc)
  3) modifying algorithm to respond to cancellin events.

I think that would be more than enough for a first part, and it would
be a great improvement for SEXTANTE

Regards

p.s. Just to let you know, I am leaving for Honduras tomorrow, and
will be there working for 2 weeks, so I not might be very active on
the lists during the next 15 days or so

2012/5/13 Marco Hugentobler <marco.hugentobler at sourcepole.ch>:
> Hi Alex
>
>
>>Also I think about rewritting fTools in C++ and integrating its
>>algorithms into QGIS
>>analysis library. This makes tools a bit faster and will allow to use
>>algorithms in
>>plugins
>
> That would be a great enhancement and leverage the analysis library as a
> whole.
>
> Regards,
> Marco
>
>
>
>
> On 13.05.2012 09:23, Alexander Bruy wrote:
>>
>> Hi Etienne,
>>
>> 2012/5/12 Etienne Tourigny<etourigny.dev at gmail.com>:
>>>
>>> I stand corrected then - I guess I was confusing it with ftools, which
>>> is blocking and does not spawn a process.
>>> Any way ftools could be adapted to use the same approach as gdaltools?
>>
>> most fTools functions already implemented as threaded, but there are some
>> minor issues. I work on improving processes handing in fTools, and several
>> tools already don't block main QGIS window, has non-modal dialogs and
>> allows
>> to cancel running process.
>>
>> Also I think about rewritting fTools in C++ and integrating its
>> algorithms into QGIS
>> analysis library. This makes tools a bit faster and will allow to use
>> algorithms in
>> plugins
>>
>
>
> --
> Dr. Marco Hugentobler
> Sourcepole -  Linux&  Open Source Solutions
> Churerstrasse 22, CH-8808 Pfäffikon SZ, Switzerland
> marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
> Technical Advisor QGIS Project Steering Committee
>
>
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