/* * 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; } }