From: "Raúl Gutiérrez Segalés" <rgs@...>
Date: 2012-08-25T02:26:24+09:00
Subject: Re: Is calling system() from a thread suppose to be safe?

Hi Robert,

On 24 August 2012 01:18, Robert Klemme <shortcutter@googlemail.com> wrote:
> On Fri, Aug 24, 2012 at 6:04 AM,  <rgs@rieder.net.py> wrote:
>> Hey there,
>>
>> I am calling system() from a thread and getting:
>>
>> `system': no implicit conversion from nil to integer (TypeError)
>> from wifi-state-observer:169:in `vpn_down'
>> from wifi-state-observer:46:in `block in run'
>> from wifi-state-observer:54:in `call'
>> from wifi-state-observer:54:in `run'
>> from wifi-state-observer:54:in `run'
>> from wifi-state-observer:270:in `<main>'
>>
>> Looking at Ruby's source:
>
> Can we first look at your call to system and surrounding code?
>

Sure, here is the full-script:

http://www.itevenworks.net/~rgs/ruby/wifi-state-observer

system() happens inside vpn_down(). As you can see the main thread is
glib2 loop and the other forks/execs a binary (that connects to a
vpn).

Cheers,

- rgs