[Chicago] capturing output from subprocesses

[Noel Thomas Taylor]

Hi Joe,

Thanks for the heads-up. I realized what I'd done right after I sent the 
message, and went in and changed the password, then sent a private message 
to Jess Balint.

But hey, if anyone else wants to help work on this problem, I'll be happy 
to set up an account for you too!

with thanks,

Noel Taylor

On Mon, 14 Nov 2005, Joe LaPenna wrote:

> oops? Sent to the whole list.
> On 11/14/05, Noel Thomas Taylor <nttaylor at uchicago.edu> wrote:
>>
>> Hi Jess,
>>
>> I've set up a guest account for you on our Irix box. Please login at
>> jess at cube.uchicago.edu. The password is 'password', which you'll probably
>> want to change when you first login. Let me know if you have any problem.
>>
>> You'll find a copy of your latest script, 'child_process_3.py', waiting
>> for you in your home directory, along with a couple of 'ticker' programs
>> and a copy of "pexpect.py", which has a hack for circumventing this
>> problem on Irix (assuming it's the same problem)
>>
>>> What do you mean the child's termination signal will not be picked up?
>>> Are you saying the SIGCHLD isn't sent to the parent process? Or isn't
>>> received for some reason? If there is a difference in the select
>>> implementation, we can probably work around that with a timer, but I
>>> think that's probably how they implement it... The other thing is if
>>> the pty isn't closed correctly, we might use the exception fd's from
>>> select to know when it's done. Either way, I'll have to take a closer
>>> look at it.
>>
>> Unfortunately, I'm not sure myself exactly what's happening, only that the
>> parent will wait on the child indefinitely. It will not abort when the
>> timeout value passed to the select call is exceeded, nor will it report
>> back when the child terminates normally.
>>
>>> Hopefully you have a C compiler on there too. ;)
>>
>> There is a C compiler, so hopefully that won't be a problem. Let me know
>> if I can do anything else to help. I'm very grateful for all your
>> assistance so far.
>>
>> best,
>>
>> Noel Taylor
>> _______________________________________________
>> Chicago mailing list
>> Chicago at python.org
>> http://mail.python.org/mailman/listinfo/chicago
>>
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