Mercurial > hg > truffle
annotate visualizer/HierarchicalLayout/src/com/sun/hotspot/igv/hierarchicallayout/Timing.java @ 5773:772118da9f68
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 05 Jul 2012 17:53:27 +0200 |
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1 /* |
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2 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 package com.sun.hotspot.igv.hierarchicallayout; |
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25 |
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26 /** |
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27 * |
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28 * @author Thomas Wuerthinger |
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29 */ |
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30 public class Timing { |
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31 |
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32 private long lastValue; |
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33 private long sum; |
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34 private String name; |
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35 |
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36 public Timing(String name) { |
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37 this.name = name; |
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38 } |
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39 |
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40 @Override |
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41 public String toString() { |
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42 long val = sum; |
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43 if (lastValue != 0) { |
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44 // Timer running |
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45 long newValue = System.nanoTime(); |
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46 val += (newValue - lastValue); |
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47 } |
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48 return "Timing for " + name + " is: " + val / 1000000 + " ms"; |
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49 } |
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50 |
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51 public void print() { |
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52 System.out.println(toString()); |
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53 } |
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54 |
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55 public void start() { |
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56 lastValue = System.nanoTime(); |
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57 } |
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58 |
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59 public void stop() { |
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60 if (lastValue == 0) { |
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61 throw new IllegalStateException("You must call start before stop"); |
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62 } |
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63 long newValue = System.nanoTime(); |
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64 sum += newValue - lastValue; |
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65 lastValue = 0; |
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66 } |
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67 } |