Learning Concurrency in Kotlin

Summary

In this chapter, we covered some of the most important details of how coroutines actually work. We put ourselves in the place of the compiler and transformed a suspending function into a state machine. We also analyzed big chunks of Kotlin's code to understand how a coroutine is intercepted in order to change (or not change) its thread, as well as to understand how exceptions are propagated. Here are some things you should remember:

• The suspending computations are transformed into state machines, and via the use of CPS they become callbacks for other suspending functions.
• The Kotlin language itself had little changes made to it in order to support coroutines. Most of the work is done by the compiler and the coroutines library.