Is there a way to detect the memory usage of a Swift application itself?

[ShikiSuen]

I want to let my Swift app (a macOS cocoa app) print an NSLog if its memory occupation exceeds 300MB.

[tera]

For that sort of question I'd recommend apple dev forums or stackoverflow – find a few discussions like this or that and figure out what works best for you. Then schedule a timer that checks memory usage periodically (†), say, every second and NSLog appropriately.

† This will miss cases when memory usage grows and quickly shrinks before your timer can see it.