On Tue, Jun 1, 2010 at 12:26 PM, Michael Ash <michael....@gmail.com> wrote:
> If your goal is to simulate shutdown/restart termination, this won't
> work; the system does not send signals to your app to kill it during
> those situations.

TN2083 is ambiguous about this. Here's the relevant section:

> This program is killed because the window server keeps track of the processes 
> that are using its services. When you log out, the system (actually 
> loginwindow) tries to quit these. For each GUI process, it sends a 'quit' 
> Apple event to the process. If any GUI process refuses to quit, loginwindow 
> halts the logout and displays a message to the user.
>
> The situation for non-GUI processes is slightly different: loginwindow first 
> tries to quit the process using a 'quit' Apple event; if that fails it 
> terminates the program by sending it a SIGKILL signal. There is no way to 
> catch or ignore this signal.
>
> The upshot of this is that, if your process connects to the window server, it 
> will not survive a normal logout."

So it's clear that non-GUI apps get a quit event and then a SIGKILL,
but it doesn't say anything about GUI apps that don't acknowledge the
quit event.

--Kyle Sluder
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