pre-deactivate - error if process running

[Craig Treleaven]

At 5:10 PM -0400 5/24/12, Jeremy Lavergne wrote:
>  > I'd like to add a check to my in-progress portfile, testing 
>whether the main server process ("mythbackend") is running and 
>refusing to deactivate if so.  The reason is that launchd will keep 
>trying to restart the missing program every 10 seconds--apparently 
>without end! Floods the console log with messages even though there 
>is little other harm.
>
>You can set the delay and maximum number of attempts.

I see the setting for delay (ThrottleInterval) but I can't find 
anything about a max number of attempts in the man page for 
launchd.plist. 

>  > I've searched around a bit and can't find any ports that seem to 
>do that sort of test.  Could someone point me to some sample code? 
>I suppose something like 'ps -Ac | grep interestingprogram'?
>
>I'm not sure, but have you checked with `launchctl list` to see if 
>its output is useful?

Could use launchctl list but that would only tell if it was launched 
under launchd.  I might as well warn regardless of the way it was 
started.

Craig