I would agree with the use of Distributed Notifications, but there is a new limitation that was added a few years ago. The receiver must be in the same login. You can no longer use it to send notifications from one user app to a different user’s app. This came to light for me when I was trying to send a notification from a root app to a user app. Fear not, though, there is a form of Notification that works perfectly for this - CFNotifications. The two, of course, are closely related, but CFNotifications allow you to use the Darwin Notification Center which allows cross-user notifications.
These are easy to use, and, I believe, still the best way to send info from one app to another in the Mac system. Jack > On Jul 25, 2023, at 9:38 AM, Rob Petrovec via Cocoa-dev > <cocoa-dev@lists.apple.com> wrote: > > 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? > https://developer.apple.com/documentation/foundation/nsdistributednotificationcenter?changes=_4&language=objc > > But what it really sounds like you want to use XPC (Cross Process > Communication) for a more targeted messaging (possibly with payloads) between > your app and menuling. > https://developer.apple.com/documentation/xpc?language=objc > > —Rob > > >> On Jul 25, 2023, at 7:51 AM, Gabriel Zachmann <z...@cs.uni-bremen.de> wrote: >> >> Thanks a lot for your responses! >> >> Sorry for the misunderstanding: I don't want to kill the other process. >> (In case you forgot: the kill(2) system call is for sending unix signals to >> processes, which can listen to those signals (at least, most of them). I >> just want to signal the other process, not really kill it. So, SIGUSR1 >> would've been my choice, if macOS would allow me to send a signal.) >> >> What do you mean by "distributed notification" ? >> How would I send it? >> >> Best regards, Gabriel >> >> > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/jackbrindle%40me.com > > This email sent to jackbrin...@me.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
