From: ara howard <ara.t.howard@...>
Date: 2008-02-21T14:10:55+09:00
Subject: Re: Strange Windows warning with IO.popen: The process tried to write to a nonexistent pipe


On Feb 19, 2008, at 6:56 PM, Daniel Berger wrote:

> Luis Lavena wrote:
>> On Feb 19, 8:02 pm, Daniel Berger <djber...@gmail.com> wrote:
>>> Hi all,
>>>
>>> Ruby 1.8.6
>>> Windows XP Pro
>>>
>>> I tried this standalone snippet:
>>>
>>> io = IO.popen('date /t')
>>>
>>> Running that with -w I get this warning:
>>>
>>> The process tried to write to a nonexistent pipe
>>>
>> I got the same without the -w option.
>> This is related to the redirection of stdio and stdout and the
>> premature termination of them (in the child process spawn by ruby).
>> If you add a Kernel.gets() or anything that delays the script
>> termiantion you wouldn't get the warning.
>
> So, how do we fix it Luis?
>
> Regards,
>
> Dan
>
>

you just need to make sure ruby doesn't exit before the process is done

  at_exit{ Process.kill io.pid}

or

at_exit{ io.read }

etc

a @ http://codeforpeople.com/
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