/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For more information, contact:
*
* Vivid Solutions
* Suite #1A
* 2328 Government Street
* Victoria BC V8T 5G5
* Canada
*
* (250)385-6040
* www.vividsolutions.com
*/
package com.vividsolutions.jts.util;
/**
* Implements a timer function which can compute
* elapsed time as well as split times.
*
* @version 1.7
*/
public class Stopwatch {
private long startTimestamp;
private long totalTime = 0;
private boolean isRunning = false;
public Stopwatch()
{
start();
}
public void start()
{
if (isRunning) return;
startTimestamp = System.currentTimeMillis();
isRunning = true;
}
public long stop()
{
if (isRunning) {
updateTotalTime();
isRunning = false;
}
return totalTime;
}
public void reset()
{
totalTime = 0;
startTimestamp = System.currentTimeMillis();
}
public long split()
{
if (isRunning)
updateTotalTime();
return totalTime;
}
private void updateTotalTime()
{
long endTimestamp = System.currentTimeMillis();
long elapsedTime = endTimestamp - startTimestamp;
startTimestamp = endTimestamp;
totalTime += elapsedTime;
}
public long getTime()
{
updateTotalTime();
return totalTime;
}
public String getTimeString()
{
long totalTime = getTime();
String totalTimeStr = totalTime < 10000 ? totalTime + " ms" : (double) totalTime / 1000.0 + " s";
return totalTimeStr;
}
}