Hi, I'm trying to understand how to use coroutines in my use case... I am using the JVM (and not android). My code doesn't current use coroutines, I'm using Java CompleteableFuture to do async work. The type of work I'm doing is Fire and Forget type of stuff (I have an infinite while loop doing video/image processing. I currently have no

suspend

functions, but I could get my code to work with the

GlobalScope.launch

function. Now I've read in several places that I should avoid using the GlobalScope. So my question is, how can I create a coroutine scope for a given method (not the main) and still use coroutines for a fire and forget type of work. I've tried doing something like

fun myMethod() = runBlocking { .... }

and then inside use

CoroutineScope.launch

but the code after the

launch

block is still blocked by the

launch

block. What could I do to make this work?

An outer scope can be created at any time, just seeded with a coroutine context: just stick a

val coroutineScope = CoroutineScope(EmptyCoroutineContext)

in some owning object

Yes, I do have that, thank you

alternatively, it sounds like you could just stick this above your while loop and cancel it in a finally block in case of errors breaking the loop?

and also, what's the difference between the

cancel

on the Job returned by

launch

and the coroutine scope's

cancel

?

well, they are different nodes in the Job hierarchy - the

launch

job will be a child of the scope Job

Awesome, thanks for the explanation 🙂