Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/code/ObjectValue.java @ 3945:8ed53447f690
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author | iveresov |
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date | Thu, 15 Sep 2011 12:44:09 -0700 |
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1 /* |
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2 * Copyright (c) 2009, 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 |
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25 package sun.jvm.hotspot.code; |
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26 |
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27 import java.io.*; |
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28 import java.util.*; |
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29 |
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30 import sun.jvm.hotspot.debugger.*; |
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31 import sun.jvm.hotspot.utilities.*; |
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32 |
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33 /** An ObjectValue describes an object eliminated by escape analysis. */ |
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34 |
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35 public class ObjectValue extends ScopeValue { |
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36 private int id; |
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37 private ScopeValue klass; |
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38 private List fieldsValue; // ArrayList<ScopeValue> |
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39 |
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40 // Field "boolean visited" is not implemented here since |
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41 // it is used only a during debug info creation. |
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42 |
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43 public ObjectValue(int id) { |
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44 this.id = id; |
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45 klass = null; |
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46 fieldsValue = new ArrayList(); |
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47 } |
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48 |
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49 public boolean isObject() { return true; } |
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50 public int id() { return id; } |
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51 public ScopeValue getKlass() { return klass; } |
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52 public List getFieldsValue() { return fieldsValue; } |
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53 public ScopeValue getFieldAt(int i) { return (ScopeValue)fieldsValue.get(i); } |
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54 public int fieldsSize() { return fieldsValue.size(); } |
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55 |
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56 // Field "value" is always NULL here since it is used |
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57 // only during deoptimization of a compiled frame |
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58 // pointing to reallocated object. |
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59 public OopHandle getValue() { return null; } |
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60 |
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61 /** Serialization of debugging information */ |
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62 |
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63 void readObject(DebugInfoReadStream stream) { |
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64 klass = readFrom(stream); |
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65 Assert.that(klass.isConstantOop(), "should be constant klass oop"); |
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66 int length = stream.readInt(); |
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67 for (int i = 0; i < length; i++) { |
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68 ScopeValue val = readFrom(stream); |
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69 fieldsValue.add(val); |
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70 } |
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71 } |
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72 |
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73 // Printing |
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74 |
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75 public void print() { |
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76 printOn(System.out); |
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77 } |
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78 |
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79 public void printOn(PrintStream tty) { |
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80 tty.print("scalarObj[" + id + "]"); |
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81 } |
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82 |
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83 void printFieldsOn(PrintStream tty) { |
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84 if (fieldsValue.size() > 0) { |
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85 ((ScopeValue)fieldsValue.get(0)).printOn(tty); |
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86 } |
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87 for (int i = 1; i < fieldsValue.size(); i++) { |
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88 tty.print(", "); |
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89 ((ScopeValue)fieldsValue.get(i)).printOn(tty); |
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90 } |
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91 } |
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92 |
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93 }; |