Learning Concurrency in Kotlin

Cancelled

A job whose execution has ended due to cancellation or an unhandled exception is considered cancelled. When a job has been cancelled, the information about the cancellation can be obtained through the getCancellationException() function. This function will return a CancellationException, which can be used to retrieve information such as the cause of the cancellation, if it was set. Here's an example:

fun main(args: Array<String>) = runBlocking {    val job = launch {        delay(5000)    }    delay(2000)    // cancel    job.cancel(cause = Exception("Tired of waiting"))    val cancellation = job.getCancellationException()    cancellation.cause // Exception("Tired of waiting")}

In order to differentiate between a job that was cancelled and one that failed due ...