From: "Berger, Daniel" <Daniel.Berger@...>
Date: 2005-09-22T06:39:59+09:00
Subject: Re: signals and win32

> -----Original Message-----
> From: Ara.T.Howard [mailto:Ara.T.Howard@noaa.gov] 
> Sent: Wednesday, September 21, 2005 9:00 AM
> To: ruby-talk ML
> Subject: Re: signals and win32

<snip>

> 
> basically i'm doing this in one irb session
> 
>    irb > Process::pid
>    1234
>    irb > trap(2){ STDERR.puts "got 2"}
> 
> and then, in another command window
> 
>    irb > require 'win32/process'
>    irb > Process::kill 2, 1234
> 
> but this doesn't work.  of course i've tried with scripts too 
> in order to make sure irb didn't have some signal handlers of 
> it's own.  i always end up getting errors from the kill or, 
> if the kill works, the trap does not: the other process 
> simply exits no matter what - eg. trap doesn't seem to work.
> 
> hope that is enough info - i'm away from that machine right now.
> 
> cheers.
> 
> -a

Oh, right, now I remember.  The problem is that signals 2 and 3 will
only be caught on processes created, via CreateProcess(), with the
CREATE_NEW_PROCESS_GROUP flag.  This is, unfortunately, just the way
that GenerateConsoleCtrlEvent() works.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc
/base/generateconsolectrlevent.asp

So, I'm guessing that in most cases, it's not very useful.

Regards,

Dan