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Re: How to get scripting to work without NSApplication

Someone said a few days ago, that the only thing that was safe to do from a
handler, was to switch a global variable...But if the darwin developers said
otherwise...

/ david

> Jason,
>
> I had exactly the same issue as you and was told not to use
> any Cocoa calls in a signal handler. My solution was to create
> an NSPipe, do a readInBackgroundAndNotify on the read end,
> and then from the signal handler just do a write(2) directly
> on the write-end file descriptor.
>
> This works well, and I later saw on the Darwin developers
> mailing list somebody recommending this writing-to-a-pipe
> from a signal handler trick, so I guess it is pretty safe.
>
> I.
>
> On Monday, December 10, 2001, at 07:32 , Jason Bobier wrote:
>
>> This is a background damon running as root. I only need to handle the
>> AEQuit event so that I can cleanup our sdk before the damon is
>> terminated.
>>
>> Currently I am catching SIGTERM and doing the cleanup there. I was told
>> that this has issues though because cocoa can't handle being called from
>> signal handlers.
>>
>> One thing that I did just notice though. NSNotificationCenter is
>> thread-safe and re-entrant. Does this mean that I could send a
>> notification to myself from a signal handler? If so, that would do the
>> job.
>>
>> Thanx,
>>
>> Jason

References: 
 >Re: How to get scripting to work without NSApplication (From: Ingvar Nedrebo <email@hidden>)



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