How to split and dispatch an async control-flow using Continuations?

Posted by hotzen on Stack Overflow See other posts from Stack Overflow or by hotzen
Published on 2010-03-15T11:41:24Z Indexed on 2010/03/15 22:59 UTC
Read the original article Hit count: 180

Filed under:

scala

|

scala-2.8

|

continuations

Hello,

I have an asynchronous control-flow like the following:

ActorA ! DoA(dataA, callback1, callbackOnErrorA)

def callback1() = {
  ...
  ActorB ! DoB(dataB, callback2, callbackOnErrorB)
}

def callback2() = {
  ActorC ! DoC(dataC, callback3, callbackOnErrorC)
} 

...

How would I divide this flow into several parts (continuations) and sequentially dispatch these to different actors (or threads/tasks) while maintaining the overall state?

Any hint appreciated, Thanks

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