Kotlin in Action, Second Edition

15 Structured concurrency

This chapter covers

• Establishing hierarchies between coroutines via the concept of structured concurrency
• How structured concurrency gives you fine-grained control over execution and cancellation of your code, automatically propagating cancellation across the coroutine hierarchy
• The relationship between the coroutine context and structured concurrency
• Writing code that behaves correctly when cancelled

When you use Kotlin coroutines in the context of real applications, chances are you will be managing a lot of coroutines. Major challenges when working with many concurrent operations are keeping track of the individual tasks that are running, cancelling them when they’re no longer needed, and making sure that errors ...