package org.litesoft.ddt;

public interface Shutdown {
    void request(int pExitCode);

    static class Instance {
        private static Shutdown SHUTDOWN;

        public static synchronized Shutdown get() {
            Shutdown zInstance = SHUTDOWN;
            if (zInstance != null) {
                return zInstance;
            }
            throw new IllegalStateException("Shutdown.Instance not initialized YET!");
        }

        public static synchronized void set(Shutdown pShutdown) {
            if (pShutdown == null) {
                throw new IllegalArgumentException("Shutdown.Instance may NOT be set to null!");
            }
            SHUTDOWN = pShutdown;
        }
    }
}