DEV Community

Emily Johnson
Emily Johnson

Posted on

Master Canceling: 5 Proven Ways to Abort Coroutines Fast

At some point, you'll face a situation where you need to halt a coroutine that's already underway. Let's explore the process of doing so.

Terminating a Job

A job has several functions at its disposal, including cancel, which appears to be the ideal solution. Moreover, we can utilize join to wait until the job has completed its termination.

The example below demonstrates a job being terminated:

runBlocking {
  val job = launch(Dispatchers.Default) {
    for (i in 0..1000) {
      delay(50)
      println("$i..")
    }
    println("Job is completed")
  }
  delay(500)
  println("Terminating")
  job.cancel()
  job.join()
  println("Terminated and done")
}

The output will be:

0..
1..
2..
3..
4..
5..
6..
7..
8..
Terminating
Terminated and done

For more information on canceling Kotlin coroutines like a pro, check out this article: 5 Essential Techniques.

Image of Datadog

Master Mobile Monitoring for iOS Apps

Monitor your app’s health with real-time insights into crash-free rates, start times, and more. Optimize performance and prevent user churn by addressing critical issues like app hangs, and ANRs. Learn how to keep your iOS app running smoothly across all devices by downloading this eBook.

Get The eBook

Top comments (0)

Billboard image

The Next Generation Developer Platform

Coherence is the first Platform-as-a-Service you can control. Unlike "black-box" platforms that are opinionated about the infra you can deploy, Coherence is powered by CNC, the open-source IaC framework, which offers limitless customization.

Learn more

👋 Kindness is contagious

Please leave a ❤️ or a friendly comment on this post if you found it helpful!

Okay