Re: Terminating subtasks reliably
Re: Terminating subtasks reliably
- Subject: Re: Terminating subtasks reliably
- From: "A.M." <email@hidden>
- Date: Tue, 30 Mar 2010 16:28:26 -0400
On Mar 30, 2010, at 4:01 PM, McLaughlin, Michael P. wrote:
> I have a Cocoa app (Leopard) which launches several Foundation Tool subtasks
> (since threads are not sufficient in this case). Currently, I terminate
> these subtasks via the app-delegate method
>
> -(NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication
> *)sender
>
> This works provided one Quits the main app using the Quit menu item.
> However, if I force-quit or if I abort using the Stop icon in Xcode, then
> the main app terminates without terminating the subtasks.
>
> Is there a more reliable hook (e.g., delegate method) that would always get
> called even on force-quit or Stop from Xcode so that these subtasks would
> always get terminated? [Otherwise, I have to terminate them from Activity
> Monitor.]
Your subtasks can use kqueue's EVFILT_PROC filter with the NOTE_EXIT fflag to be alerted when the parent process exits. If your subtasks are spinning their NSRunLoops, you can integrate kqueue via CFFileDescriptor.
Cheers,
M_______________________________________________
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