[Baypiggies] Help with starting new processes- updated

[Tony Cappellini]

Interesting ideas Thanks!


On Fri, Aug 22, 2014 at 10:08 PM, Nanshu Chen <nanshu at gmail.com> wrote:

> I can think of two possible options:
>
> 1. Keep using Multiprocessing, and in each subprocess, rewrite sys.stdout
> to write to two local log files, then open two consoles and monitor the log
> files (suppose Windows has tools similar to 'tail -f' in unix. I am not
> familiar with Windows so sorry if it's not available.)
>
> 2.  If you really want to use subprocess, then I guess the easiest (but
> not necessarily the lightest or best) way is to use some lightweight
> message queue tools like zeromq. I am not sure if a local database like
> sqlite will work as well but it may worth trying.
>
> Regards,
>
> Nanshu
>
>
> On Fri, Aug 22, 2014 at 7:41 PM, Tony Cappellini <cappy2112 at gmail.com>
> wrote:
>
>> Updated- changed multiprocess to multiprocessing
>>
>> I'm running Python 2.7.6 on 32-Bit Windows7 Pro. (Python 3 isn't an
>> option at the moment)
>>
>> I have a parent python script which spawns two subprocesses- where each
>> subprocess is running
>> in a new console window. I want to watch each process running. This is
>> why I've explicitly used
>> creationflags=CREATE_NEW_CONSOLE in the subprocess.Popen() call.
>>
>>
>> The subprocesses are running a simple CLI program which are monitoring
>> some embedded devices being tested.
>> I don't want to use a GUI for them.
>>
>> Here is the code for the parent script
>> http://pastebin.com/mNNCH1vY
>>
>> Ideally, I'd like the parent script to pass some information via a queue,
>> to each subprocess.
>> The queues have nice functionality which would allow the receiving
>> process to work until the queue is empty,
>> and then wait until it is no longer empty.
>>
>> I don't see a way to use pass a queue using the subprocess module,
>> nor do I see a way to create a new console using
>> the multiprocessing module.
>> Multiprocessing makes it quite easy to pass a queue to subprocesses.
>>
>>
>> I've spent a lot of time with the documentation for both modules, but it
>> can be confusing.
>>
>> Is there a happy medium between these two modules that will help me
>> get what I want?
>>
>>
>>
>> Thanks
>>
>>
>>
>>
>>
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>
>
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