call to pypcap in separate thread blocks other threads

Dmitry Teslenko dteslenko at gmail.com
Wed Dec 30 09:07:38 EST 2009


On Wed, Dec 30, 2009 at 16:18, aspineux <aspineux at gmail.com> wrote:
> On Dec 30, 1:34 pm, Dmitry Teslenko <dtesle... at gmail.com> wrote:
>> Hello!
>> I'm making gui gtk application. I'm using pypcap
>> (http://code.google.com/p/pypcap/) to sniff some network packets.
>> To avoid gui freezing I put pcap call to another thread.
>> Pypcap call looks like:
>>
>> pc = pcap.pcap()
>> pc.setfilter('tcp')
>> for ts, pkt in pc:
>>         spkt = str(pkt)
>>         ...
>>
>> Sadly, but this call in another thread blocks gtk gui thread anyway.
>> If I substitute pcap call with something else separate thread don't block
>> gui thread.
>>
>> Using another process instead of thead isn't appropriate.
>>
>> Thread initialization looks like and takes place before gtk.main():
>>
>> self.__pcap_thread = threading.Thread(target = self.get_city_from_pcap)
>> self.__pcap_thread.start()
>
> Did you try using build-in gtk thread ?
>
> Regards
>
> Alain Spineux                         |  aspineux gmail com
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>>
>> --
>> A: Because it messes up the order in which people normally read text.
>> Q: Why is top-posting such a bad thing?
>> A: Top-posting.
>> Q: What is the most annoying thing in e-mail?
> --
> http://mail.python.org/mailman/listinfo/python-list
>

No. What makes it different?


-- 
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?



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