CancelToken

typealias CancelToken = suspend () -> Unit

fun main(args: Array<String>) {
  val stack = listOf<CancelToken>(
    { delay(10000000000) }, //blocks forever
    {
      delay(100)
      println("I cancelled first token: ${Thread.currentThread().name}")
    },
    {
      delay(200)
      println("I cancelled second token: ${Thread.currentThread().name}")
    }
  )

  stack.forEach { token ->
    token.startCoroutine(RunAndForgetContinuation())
  }

}

class RunAndForgetContinuation<A> : Continuation<A> {
  override val context: CoroutineContext
    get() = EmptyCoroutineContext

  override fun resumeWith(result: Result<A>) = Unit
}

EmptyCoroutineContext

startCoroutine