I have `class` that takes a `suspend` function, `p...

# multiplatform

[adjpd]

I have class that takes a suspend function, passedFn, as a parameter. And the class has a suspend method, fn(). When fn() calls passedFn() I receive this error on iOS illegal attempt to access non-shared Something.$fnCOROUTINE$0@2d9f788 from other thread. I'm vaguely aware it has something to do with freezing objects across threads. Could anyone enlighten me further? What would I need to do in order to get this to work?

[adjpd]

Kotlin

class Something(
  val passedFn: suspend () -> Unit,
) {
  suspend fun fn(): Boolean {
    passedFn() // crash here
    return true
  }
}

[adjpd]

Swift

class AFunction : KotlinSuspendFunction0 {
  func invoke() async throws -> Any? {
    return nil
  }
}
Something(myfn: AFunction()).fn() { v, e in
  print("hello \(v)")
}

[michaelv]

are you using the new memory model?

[michaelv]

https://github.com/JetBrains/kotlin/blob/master/kotlin-native/NEW_MM.md

[adjpd]

I just put kotlin.native.binary.memoryModel=experimental is my gradle properties and now it's all working. Thanks you enormously