gistfile1.java

public class SystemClock {
    public static long lastTime = 0;

    /**
     * Returns a strictly increasing time in number of 100 ns that passed since Unix Epoch.
     */
    public static synchronized long getTime() {
        long time = System.currentTimeMillis() * 10L*1000L;

        if (time <= lastTime) {
            lastTime++;
            time = lastTime;
        }

        lastTime = time;
        return time;
    }
}