[Chicago] Popen/subprocess/Poll Question.

[Samir Faci]

Inline.

On Thu, Jul 22, 2010 at 10:49 AM, Daniel Griffin <dgriff1 at gmail.com> wrote:
>
> You really don't need Threads or Processes if you just use poll. Just keep a
> list of popen's and periodically check them with poll.
>
I only spawned a thread because it seemed like communicate was
blocking, so having it on a different
thread seemed simple enough.

>
> On Thu, Jul 22, 2010 at 10:28 AM, Martin Maney <maney at two14.net> wrote:
>>
>> On Thu, Jul 22, 2010 at 09:55:24AM -0500, Samir Faci wrote:
>> > I'm running a process that's usually takes a while.... (in the best
>> > case scenario a few hours... going on days occasionally)
>> >
>> > I'm presuming I need to spawn a thread for the process so it doesn't
>> > block.
>>
>> Thread-on-the-brain disease?  Why not run it as a separate process?
>> Threads are just processes that can mess each other up almost without
>> trying.  :-/
>>
>> > Now, what I'm trying to accomplish is to have it print its output to a
>> > screen AND let me capture its output.  I'd like to see the output.
>> > I'd also like to see the output as its processing, not capture it, and
>> > print it to screen and then write to file.
>>
>> There's an Anciente Unixe command that does this very thing, named
>> "tee".  Just sayin'

sure.  tee would work.  But I have a nice logger library that adds
those handy timestamps.. which helps me figure out when things broke
etc.

and see if it hasn't printed anything for 3 hours.. that I can
probably kill it because it's hung.

I wanted to handle the output of the program internally in my python
code.  I've use tee before, but it's not as versatile as I'd like it
to be.

--
Samir


>>
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>>
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-- 
--
Samir Faci
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