Perl 6 doesn't have kill

[briandfoy]

The p5-p6 perlfunc for kill says

Now part of the LProc::Async class, but looks to work as in Perl 5.

As far as I can tell, this only lets you send a signal to a process you started and there's no (documented) way to provide a PID.

method kill(Proc::Async:D: $signal = "HUP") {
    X::Proc::Async::MustBeStarted.new(:method<kill>, proc => self).throw if !$!started;
    nqp::killprocasync($!process_handle, $*KERNEL.signal($signal));
}

That killprocasync is really in MoarVM as far as I can tell, but even at the NQP level I lose all my bearings.

As such, it seems this doesn't work at all like the Perl 5 version. It might be too late to change the name of the method so it doesn't carry the baggage of the expectations of the real thing called kill, but it doesn't work as it does in Perl 5. I'd probably document this as "not in Perl 6, so shell out".

I wasn't so much interested in the termination aspects of kill as the "is the process still running" abilities, especially for processes not started by the one I'm currently in.

[Leont]

I wasn't so much interested in the termination aspects of kill as the "is the process still running" abilities, especially for processes not started by the one I'm currently in.

This is a rather POSIX specific expectation. perl5 puts effort into emulating it on Windows; it's not necessarily a sensible expectation or a sensible interface.

[zoffixznet]

Thanks. Fixed in 3bb170f