``` val queueListener = launch { while ...

# coroutines

[Alexander Romanov]

val queueListener = launch {
        while (isActive) {
            // do something
        }
    }

    Runtime.getRuntime().addShutdownHook(Thread {
        <http://logger.info|logger.info> { "Cancellation requested" }
        queueListener.cancel()
    })

    queueListener.join()
    <http://logger.info|logger.info> { "Exiting program" }

why would “Exiting program” never show up?
are there any other way to do it? I am also considering channel that sends some cancellation event. But what wold be the better way to handle this?

[streetsofboston]

What happens if you add a yield() statement inside your while(isActive) loop…

[Alexander Romanov]

it doesn’t change anything

[streetsofboston]

Try this for debugging:
First: Does your program end or does it hang?
If it ends, try this:
Instead of a shutdown-hook, use a timer to cancel queueListener.

If that works, maybe the 'join' call doesn't work when the program is shut down.

[Alexander Romanov]

I fixed the issue by waiting in thread created by webhook until queueListener reports successful cleanup