> NSDistributedNotificationCenter is a way to send a notification out across 
> the system. Only processes that are listening for the notification will 
> receive it and have a chance to do something with it. It’s like yelling out 
> in a crowded room to tell a single person something. Everyone will hear your 
> message, but only one will be listening. Make sense?

Definitely. Sounds great for my purpose.
It will happen only very rarely.
And I don't have any payload.

>  
> https://developer.apple.com/documentation/foundation/nsdistributednotificationcenter?changes=_4&language=objc
>

Thanks a lot for the pointer!

> But what it really sounds like you want to use XPC (Cross Process 
> Communication) for a more targeted

I had looked into that but it appeared to heavy-weight for my purposes.


Best regards, Gabriel


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