My macos KN applications write in console: `Discarding message for event 0 because of too many unpro...

# kotlin-native

[aleksey.tomin]

My macos KN applications write in console: Discarding message for event 0 because of too many unprocessed messages
How can I process messages from OS?

[louiscad]

Maybe by calling CFRunLoop()?

[aleksey.tomin]

Hm…
“The only time you need to run a run loop explicitly is when you create secondary threads for your application”
I don’t use secondary thread all the time (only sometimes for microhttpser library).
How can I understand what and when have I to use?

[Artyom Degtyarev [JB]]

Hi, @aleksey.tomin! As far as I can see, this paragraph is not about your case, if you’re not using NSApplication().run() , you should run loop manually.

[aleksey.tomin]

Turns out I’m using NSApplication somewhere.
If I add NSApplication().run() I have error message Creating more than one Application

[Artyom Degtyarev [JB]]

Okay, than you can try to get this instance (using `NSApp`public variable) and execute run() . Or, maybe CFRunLoop makes more sense here.

[aleksey.tomin]

var app = NSApp
        println("existing: $app")
        app = app?: NSApplication()
        println("active: ${app.active}")
        app.run()

Result:

existing: null
active: false
...
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Creating more than one Application'

🤯

[svyatoslav.scherbina]

Your code fragment doesn’t work on Obj-C either.
This one works:

var app = NSApplication.sharedApplication
println("existing: $app")
app = app?: NSApplication()
println("active: ${app.active}")
app.run()

[aleksey.tomin]

Thank you!
Just NSApplication.sharedApplication isn’t nullable - NSApplication.sharedApplication.run() is OK