Launching an async coroutine with the dispatcher hangs the server permanently.

[Deleted user]

If I do

println(Thread.currentThread().name)
runBlocking {
    withContext(dispatcher(plugin, async)) { // hangs here
        println(Thread.currentThread().name)
    }
}
println(Thread.currentThread().name)

then the server hangs forever once the async dispatcher is started. Do you have any idea why this might happen?

[Ole Kristian Sandum]

I believe this is because you use runBlocking.

[Deleted user]

What coroutine scope do I use? GlobalScope is not recommended since they are never destroyed.

[Ole Kristian Sandum]

Hmm, I guess you could create one scoped to your plugin's lifetime. I might include something that makes this easier in the future, but for now, how about this:

class Main : JavaPlugin(), CoroutineScope {

    private lateinit var job: Job

    override val coroutineContext: CoroutineContext
        get() = dispatcher() + job

    override fun onEnable() {
        job = Job()
        ...
    }

    override fun onDisable() {
        job.cancel()
        ...
    }

}

[Deleted user]

That's super helpful, I'll give it a try. Thank you!

[Ole Kristian Sandum]

Great. I'll close this issue then.