From: "ara.t.howard" <ara.t.howard@...>
Date: 2007-12-30T02:51:56+09:00
Subject: Re: invoke INT in xp


On Dec 28, 2007, at 9:34 PM, Junkone wrote:

> Hello
> How do i invoke the INT signal in xp using ruby. i have this following
> code running to do something when its process has a INT signal.
> however i dont know how to invoke it.
> trap("INT") {
>   begin
>     bot.deliver(bot.master,"this is a test run")
>   rescue Exception => e
>     puts e
>   end
>
> I tried, Kill but it does not recognise the pid i sentwhich is valid
> irb(main):001:0> Process.kill("INT",4744)
> Errno::EINVAL: Invalid argument
>         from (irb):1:in `kill'
>         from (irb):1
> irb(main):002:0> Process.kill("INT")
> ArgumentError: wrong number of arguments -- kill(sig, pid...)
>         from (irb):2:in `kill'
>         from (irb):2
> irb(main):003:0> Process.kill("INT",4744)
> Errno::EINVAL: Invalid argument
>         from (irb):3:in `kill'
>         from (irb):3
> irb(main):004:0>
>
>



afaikt you cannot send a signal to another process in windows using  
ruby.  the win32-process module has an alternate impl that does allow  
this - but then trap does not work ;-(

see this post for a very very simple work around that's also cross  
platform:

   http://drawohara.com/post/22540307

the basic concept is that you use drb to cause a process to signal  
itself - which *does* work on windows, including the trap of said  
signal.

regards.

a @ http://codeforpeople.com/
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