| /* |
| * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| package com.sun.hotspot.igv.hierarchicallayout; |
| |
| /** |
| * |
| * @author Thomas Wuerthinger |
| */ |
| public class Timing { |
| |
| private long lastValue; |
| private long sum; |
| private String name; |
| |
| public Timing(String name) { |
| this.name = name; |
| } |
| |
| @Override |
| public String toString() { |
| long val = sum; |
| if (lastValue != 0) { |
| // Timer running |
| long newValue = System.nanoTime(); |
| val += (newValue - lastValue); |
| } |
| return "Timing for " + name + " is: " + val / 1000000 + " ms"; |
| } |
| |
| public void print() { |
| System.out.println(toString()); |
| } |
| |
| public void start() { |
| lastValue = System.nanoTime(); |
| } |
| |
| public void stop() { |
| if (lastValue == 0) { |
| throw new IllegalStateException("You must call start before stop"); |
| } |
| long newValue = System.nanoTime(); |
| sum += newValue - lastValue; |
| lastValue = 0; |
| } |
| } |