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annotate visualizer/HierarchicalLayout/src/com/sun/hotspot/igv/hierarchicallayout/Timing.java @ 9790:6b515c453646

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CompilationTask: print exception of compilation also when we don't exit the VM for example, this is useful for CTW, in order to see on which methods the compiler bails out
author Bernhard Urban <bernhard.urban@jku.at>
date Wed, 22 May 2013 16:28:12 +0200
parents 015fb895586b
children
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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 }