001/*
002 * Copyright 2010-2015 Institut Pasteur.
003 * 
004 * This file is part of Icy.
005 * 
006 * Icy is free software: you can redistribute it and/or modify
007 * it under the terms of the GNU General Public License as published by
008 * the Free Software Foundation, either version 3 of the License, or
009 * (at your option) any later version.
010 * 
011 * Icy is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
014 * GNU General Public License for more details.
015 * 
016 * You should have received a copy of the GNU General Public License
017 * along with Icy. If not, see <http://www.gnu.org/licenses/>.
018 */
019package icy.system.profile;
020
021/**
022 * This class provide a simple chronometer using Calendar.getInstance().getTimeInMillis();
023 * 
024 * @author fab
025 */
026public class Chronometer
027{
028    long startTimeInNs;
029    String descriptionString;
030
031    public Chronometer(String descriptionString)
032    {
033        this.descriptionString = descriptionString;
034        startTimeInNs = System.nanoTime();
035        System.out.println(descriptionString + ": chrono Started");
036    }
037
038    public long getNanos()
039    {
040        return System.nanoTime() - startTimeInNs;
041    }
042
043    public void displayMs()
044    {
045        System.out.println(descriptionString + "(ms): " + getNanos() / 1000000f);
046    }
047
048    public void displayInSeconds()
049    {
050        System.out.println(descriptionString + "(s): " + getNanos() / 1000000000f);
051    }
052
053    @Override
054    public String toString()
055    {
056        return descriptionString + "(nanos): " + getNanos();
057    }
058
059}