Jan,
wuuuuuuauuuuu, :-))) exalent article.
Thanx a lot.
Am 12 Aug 2003 um 12:29 hat Jan Dubois geschrieben:
> On Tue, 12 Aug 2003 14:48:37 -0400, "Jean-Sebastien Guay"
> <[EMAIL PROTECTED]> wrote:
>
> >He meant the perl function "kill". it should work on Win32 as well.
>
> Note that Perl 5.6 will always send a 'KILL' signal, i.e.
>
> kill 9, $pid;
> or
> kill 'KILL', $pid;
>
> regardless what signal you specify.
>
> Perl 5.8 has some support for the 'INT' signal on Windows, but
> unfortunately you cannot send 'INT' (Ctrl-C) to process groups but
only
> single processes. Perl 5.8 started to always create new processes
as
> process groups, so
>
> kill 2, $pid;
> or
> kill 'INT', $pid;
>
> will not work if the process has been created by Perl itself. The
> process group creation is necessary because Perl often starts child
> processes via cmd.exe. If it wouldn't mark them as a process
group, the
> 'KILL' signal would only terminate the cmd.exe process but not the
> _real_ child process.
>
> In Perl 5.8.1 it will be possible to send a 'BREAK' (Ctrl-Break)
signal
> to other processes, and that one does indeed work with process
groups as
> well. That will allow you to intercept the signal in the child process
> and do your cleanup before terminating:
>
> $SIG{BREAK} = sub {
> # shut down
> exit(1);
> }
>
> In summary:
>
> * kill() in Perl 5.6.x on Windows maps all signals to 'KILL'.
>
> * kill() in Perl 5.8.0 on Windows maps all signals except 'INT'
> to 'KILL'.
>
> * kill() in Perl 5.8.1 on Windows will map all signals except 'INT',
> 'BREAK' and 'TERM' to 'KILL'. It will also map 'TERM' to
'BREAK'.
>
> Cheers,
> -Jan
>
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Kris Wolff
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