class DefaultHardwareClock implements HardwareClock {

    long elapsedTime(long start, long end) {
        if (end > start) return (end - start);
        return (Long.MAX_VALUE - start) + 1 + (end - Long.MIN_VALUE);
    }

    public  DefaultHardwareClock();
    public  DefaultHardwareClock(Env env);
    public  DefaultHardwareClock(Env env, int numSamples, long periodMillis);

}