Method exit

src/main/java/field/app/RunLoop.java:311–328

()

    public void exit() {
        try {
            if (exitStarted.compareAndSet(false, true)) {
                for (Runnable r : onExit) {
                    try {
                        r.run();
                    } catch (Throwable t) {
                        System.err.println(" exception thrown during exit (will continue on regardless)");
                        t.printStackTrace();
                    }
                }
                if (Thread.currentThread() != shutdownThread) System.exit(0);
            }
        } catch (Throwable t) {
            System.err.println(" unexpected exception thrown during exit ");
            t.printStackTrace();
        }
    }

    /**
     * adds a Runnable to be executed on exit. This will run before anything else that's been added.
     */