Finding references on a symbol with a large amount of references hangs the server

[Ruin0x11]

Every request is currently handled synchronously by the server, so there should at least be some mechanism in place for a (preferably user-specified) cutoff time, and the capturing of partial results.

[tadfisher]

RxJava (with RxKotlin) is basically perfect for this. Structure the command handlers to emit elements as an Observable, then cancel the subscription to that Observable on a timeout (keeping the emitted results):

command.execute()
  .subscribeOn(workerThread)
  .observeOn(handlerThread)
  .takeUntil(Observable.timer(timeout, TimeUnit.SECONDS))
  .toList()
  .subscribeBy { handleResult(it) }

[Ruin0x11]

Interesting, I'll definitely check it out when implementing server-to-client notifications.