JVM does not exit after a simple script using this lib #6
Description
Whenever I run a script with this lib, the JVM is "hanging" when the script is done, even if the script does not contain an event loop of any kind. At least after closing the last device with
status = dev.stopApplication(receiver, true);
dev.disconnect();I would expect all is set for a normal JVM termination. To find out what's going on I added this code snippet (jstat might have done it as well)
Set<Thread> threads = Thread.getAllStackTraces().keySet();
System.out.printf("%-15s \t %-15s \t %-15s \t %s\n", "Name", "State", "Priority", "isDaemon");
for (Thread t : threads) {
System.out.printf("%-15s \t %-15s \t %-15d \t %s\n",
t.getName(), t.getState(), t.getPriority(), t.isDaemon());
}This results in:
Name State Priority isDaemon
Finalizer WAITING 8 true
Notification Thread RUNNABLE 9 true
main RUNNABLE 5 false
Cast API worker #1 TIMED_WAITING 5 false
Signal Dispatcher RUNNABLE 9 true
Common-Cleaner TIMED_WAITING 8 true
Reference Handler RUNNABLE 10 true
Cast API worker #2 TIMED_WAITING 5 false
Maybe the Cast API worker threads could be daemons? Or, if that causes trouble elsewhere, there could be some shutdown method that turns them into daemons? I'd think disconnect(); should do this, but maybe that's a problem if multiple devices are controlled.