private void onDeadline(boolean heapdumpOnShutdown) {
        if (heapdumpOnShutdown) dumpHeap(heapdumpFilename(), true);
        logAndDie("Timed out waiting for application shutdown. Please check that all your request handlers " +
                "drain their request content channels.", true);
    }
Kills the JVM if the application is unable to shutdown before deadline.

@author bjorncs
container-disc/src/main/java/com/yahoo/container/jdisc/ShutdownDeadline.java