Learning Concurrency in Kotlin

Determining the current state of a Job

As we have already seen, a job has many different states, so it's important to know how to determine its current state as its external observers.

A job has three properties that can help with this; they're as listed:

• isActive: Whether the job is active. This will return true when the job is suspended too.
• isCompleted: Whether the job has completed its execution.
• isCancelled: Whether the job has been cancelled. This will hold true as soon as the cancellation is requested.

These properties can be easily mapped with the list of states given earlier:

State	isActive	isCompleted	isCancelled
Created	false	false	false
Active	true	false	false
Cancelling	false	false	true
Cancelled	false	true	true ...