I'm not sure whether
these launch agents questions belong here (I cross-posted to cocoa-dev and
someone kindly suggested this list) please let me know if this is more
appropriate on another list. Thanks for your help.
Hi All, I have a few questions related to launch
agents. I realize that there is only
one launchd per user, so a GUI session and an ssh login session will not have
separate launchd’s, and I’m fine with that (otherwise, I believe loginwindow
plist would be recommended).
I have a launch agent that I want to run whenever
the user logs in via the GUI window. I noticed that I need to call
system(“launchctl unload com.myCompany.myAgent.plist”) at then very end of
executable myAgent, in order for my launch agent to be run again after logging
out and logging back in via GUI. Otherwise my launch agent plist remains
loaded and the next time I log back in, nothing happens. Is this method of
unloading at the end of the executable reasonable, or is there another more
standard way of doing this?
The other thing is if I run my launch agent without
the unload compiled in at the very end, then manually unload, and relogin, I get
the following error – “CoreMIDI: unable to connect to server init port”.
This is mind boggling to me. Why would compiling in the unload into my
launch agent make a difference? The CoreMIDI error looks as if it is
trying to launch my agent as a daemon, and I don’t see how this arises from not
compiling in unload at the end.
Also, my launch agent really just fires off some
other programs and does some synchronization, so it exits after a few
seconds. Is there any way for me to get around the error “9 more failures
without living at least 60 seconds will cause job removal”? I’d rather not
add a sleep(60) in my executable.
Thanks, Alex
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