| /* |
| * 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.bcel; |
| |
| public class NanoTimer { |
| |
| private long time = 0; |
| |
| public NanoTimer start() { |
| time -= System.nanoTime(); |
| return this; |
| } |
| |
| public void stop() { |
| time += System.nanoTime(); |
| } |
| |
| public void subtract(NanoTimer o) { |
| time -= o.time; |
| } |
| |
| public void reset() { |
| time = 0; |
| } |
| |
| /** |
| * May ony be called after stop has been called as many times as start. |
| */ |
| @Override |
| public String toString() { |
| return ((double) (time) / 1000000000) + " s"; |
| } |
| |
| |
| |
| } |