@eskimo Agree 100% with all your comments. Due to backwards compatibility on iOS/macOS (support for pre Network.framework devices) and due to multiplaform nature of my apps I implement Happy Eyeballs myself, but sooner or later I shall move to NWConnection… that is for sure!
enodev
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I do not actually remember, but I would assume yes it worked - profiling the Catalyst variant, but I may not remember correctly. The screenshots above should indicate that my setup in code actually does work when used on iOS device.
But my other tests confirm, that simply profiling a simple XCTestCase that uses os_signpost on macOS does not work either...
So I believe it's not about catalyst, it's a general problem of profiling os_signpost from Xcode on the same Mac.
Deferred recording mode does not work either. Filed a bug FB13683303.
Can confirm, macOS Sonoma 14.5 + Xcode 15.4 works again. Thanks a lot!