KryoLazyVal.scala

import com.esotericsoftware.kryo.io.{Input, Output}
import com.twitter.chill.{KSerializer, Kryo}
import scala.runtime.LazyVals
import scala.runtime.LazyVals.LazyValControlState

class LazyValControlStateSerializer extends KSerializer[LazyValControlState] {
  override def read(kryo: Kryo, input: Input, cls: Class[LazyValControlState]): LazyValControlState = {
    kryo.readClassAndObject(input).asInstanceOf[LazyValControlState]
  }

  override def write(kryo: Kryo, output: Output, obj: LazyValControlState): Unit =
    kryo.writeClassAndObject(output, null)
}

val ser = new LazyValControlStateSerializer
// code omitted
k.register(classOf[LazyVals.Waiting], ser)
k.register(classOf[LazyVals.Evaluating.type], ser)