I'm aware of long polling of file/socket and libdispatch.dispatch_source to update main threads from BG on iOS/Android. I'll have to try that out and find if it

I'm aware of long polling of file/socket and libdispatch.dispatch_source to update main threads from BG on iOS/Android. I'll have to try that out and find if it works. >You can also have your app provide a C callback to the Rust code That's exactly what I'm doing, however callbacks become cumbersome after a while, and I don't like that pattern. I need to do MVVM where the View is a thin iOS/Android layer, and the VM is in Rust. Right now there are significant hurdles to keep references from Swift to Rust and vice versa.