A lot has been written about the Garbage Collector and Xamarin.iOS. Lately, I’ve been hit by some surprises and I want to share my findings. Let me say that there is not a single bug involved! All the issues I describe are either documented or show standard behavior of the .NET runtime. The fact that Xamarin.iOS lives on top of a reference counted world makes things a bit more difficult.
Many thanks to Rolf Bjarne Kvinge for his patience, Marek Safar for sharing the secrets of Mono compiler with me, Rodrigo Moya for helping me with the Xamarin Profiler, James Clancey for his drawings about native reference cycles 🙂 and Chris van Wyk for supporting me in these moments of “good god, this cannot be!”