MP3.sc: actually kill started processes

[mortuosplango]

• unixCmd doesn't return cmd PID but PID of shell containing command (see unixCmd adds "sh -c" to the command supercollider/supercollider#1738)
• kill therefore in some cases didn't kill the cmd
• use pkill to kill whole group

[crucialfelix]

I just tested using pkill manually. It kills the children of that process but it doesn't kill that pid.

 -P ppid     Restrict matches to processes with a parent process ID in the comma-separated list ppid.

I ran it and while it did kill the children, the parent is still running.

[mortuosplango]

That's a bit annoying. It seems to somehow do it on OSX 10.10:

mooncake:build hb$ ps aux | grep lame
hb 832 0,0 0,0 2432772 628 s010 R+ 10:18am 0:00.00 grep lame
hb 811 0,0 0,0 2442744 1416 ?? S 10:16am 0:00.01 /usr/local/bin/lame --decode --silent --resample 48 /Users/hb/src/eternaldawn/recordings/254698.mp3 /tmp/sc3mp3--1660210771.fifo
hb 810 0,0 0,0 2434392 876 ?? S 10:16am 0:00.00 sh -c /usr/local/bin/lame --decode --silent --resample 48 "/Users/hb/src/eternaldawn/recordings/254698.mp3" /tmp/sc3mp3--1660210771.fifo > /dev/null
mooncake:build hb$ pkill -P 810
mooncake:build hb$ ps aux | grep lame
hb 836 0,0 0,0 2432772 644 s010 S+ 10:18am 0:00.00 grep lame

Time to find a different way I suppose

[miguel-negrao]

What about using ("kill -- -" + pid).systemCmd; ? From man kill"Negative PID values may be used to choose whole process groups;"

[mortuosplango]

Yeah, that doesn't work reliably on my mac somehow. That term is not in my "man kill" so I suppose it's a linux thing.

[crucialfelix]

I tried the negative thing too. It totally didn't work on OSX. grr