Thanks a lot guys !!
I solved the problem:
In the lines:
>> new_process = process(target=newprocess)
>> new_process.start()
The target=newprocess is pointing towards a variable, instead of a function.
So, appending a () will make it goto that function, thereby changing the global
variable : )
Thanks,
Nav
On 04-Aug-2010, at 11:42 AM, Daniel da Silva wrote:
> Your problem lies somewhere in the use of the Process class, not with global
> variables.
>
> If you replace your "p = ..." and "p.start()" lines with a direct call to
> self.handle_connection(), your code works as expected. I don't know much
> about the multiprocessing module, so I can't really comment on what you're
> doing wrong, but I hope this points you in the right direction.
>
> Sorry I couldn't be of more help,
>
> Daniel
>
>
> On Tue, Aug 3, 2010 at 9:48 PM, Navkirat Singh <navkir...@gmail.com> wrote:
>
> On 04-Aug-2010, at 9:46 AM, Daniel da Silva wrote:
>
>> Please post approximate code that actually works and displays the problem.
>>
>> On Tue, Aug 3, 2010 at 9:00 PM, Navkirat Singh <navkir...@gmail.com> wrote:
>> Hey guys,
>>
>> I am using a multiprocessing program, where the new process is supposed to
>> change a variable in the main class that it branches out from. This is
>> somehow not working, following is an approximate code. Would really
>> appreciate any insight into this matter:
>>
>>
>> var = {}
>>
>> class Something():
>>
>> def set_var(self):
>> global var
>> var = somevalue
>>
>> def get_var(self):
>> return var
>>
>> def newprocess(self):
>> self.set_var()
>>
>> def do_multiprocessing(self):
>> while true:
>> self.get_var()
>> new_process = process(target=newprocess)
>> new_process.start()
>>
>>
>> I am really confused here !
>>
>> Any help would be awesome : )
>>
>> Regards,
>> Nav
>>
>> --
>> http://mail.python.org/mailman/listinfo/python-list
>>
>
> This is a working code, streamlined, but it is where the problem is:
>
> from multiprocessing import *
>
> dicts = 0
> print('global ', dicts)
>
> class WebServer():
>
> def set_sessionInfo(self):
> global dicts
> dicts = dicts + 1
>
> def get_sessionInfo(self):
> return dicts
>
> def handle_connection(self):
> self.set_sessionInfo()
>
> def serve_forever(self):
> for x in range(10):
> p = Process(target=self.handle_connection)
> p.start()
> print(self.get_sessionInfo())
>
> ws = WebServer()
> ws.serve_forever()
> print(dicts)
>
>
>
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