/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * */ package org.apache.vysper.xml.sax.perf; /** * * @author The Apache MINA Project (dev@mina.apache.org) */ public class StopWatch { private long startTime = System.nanoTime(); private long stopTime = -1; public void start() { startTime = System.nanoTime(); } public void stop() { stopTime = System.nanoTime(); } public String toString() { long endTime; if (stopTime == -1) { endTime = System.nanoTime(); } else { endTime = stopTime; } double time = endTime - startTime; String s; if (time < 1000) s = time + " ns"; else if (time < 1000000) s = (time / 1000) + " us"; else if (time < 1000000000) s = (time / 1000000) + " ms"; else s = (time / 1000000000) + " s"; return s; } }