Mercurial > hg > truffle
annotate graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/CiDebugInfo.java @ 5542:e318468952f5
Remove CiBitMap and replace usages with java.util.BitSet.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 09 Jun 2012 17:13:21 +0200 |
parents | 80371cc2256d |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2011, 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 package com.oracle.graal.api.code; |
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24 |
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25 import java.io.*; |
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26 import java.util.*; |
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27 |
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28 /** |
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29 * Represents the debugging information for a particular place in the code, |
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30 * which includes the code position, a reference map, and deoptimization information. |
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31 */ |
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32 public class CiDebugInfo implements Serializable { |
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33 |
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34 private static final long serialVersionUID = -6047206624915812516L; |
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35 |
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36 /** |
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37 * The code position (including all inlined methods) of this debug info. |
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38 * If this is a {@link CiFrame} instance, then it is also the deoptimization information for each inlined frame. |
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39 */ |
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40 public final CiCodePos codePos; |
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41 |
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42 /** |
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43 * The reference map for the registers at this point. The reference map is <i>packed</i> in that |
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44 * for bit {@code k} in byte {@code n}, it refers to the register whose |
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45 * {@linkplain CiRegister#number number} is {@code (k + n * 8)}. |
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46 */ |
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47 public final BitSet registerRefMap; |
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48 |
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49 /** |
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50 * The reference map for the stack frame at this point. A set bit at {@code k} in the map |
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51 * represents stack slot number {@code k}. |
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52 */ |
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53 public final BitSet frameRefMap; |
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54 |
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55 /** |
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56 * Creates a new {@code CiDebugInfo} from the given values. |
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57 * |
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58 * @param codePos the {@linkplain CiCodePos code position} or {@linkplain CiFrame frame} info |
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59 * @param registerRefMap the register map |
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60 * @param frameRefMap the reference map for {@code frame}, which may be {@code null} |
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61 */ |
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62 public CiDebugInfo(CiCodePos codePos, BitSet registerRefMap, BitSet frameRefMap) { |
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63 this.codePos = codePos; |
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64 this.registerRefMap = registerRefMap; |
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65 this.frameRefMap = frameRefMap; |
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66 } |
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67 |
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68 /** |
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69 * @return {@code true} if this debug information has a frame |
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70 */ |
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71 public boolean hasFrame() { |
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72 return codePos instanceof CiFrame; |
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73 } |
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74 |
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75 /** |
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76 * @return {@code true} if this debug info has a reference map for the registers |
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77 */ |
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78 public boolean hasRegisterRefMap() { |
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79 return registerRefMap != null && registerRefMap.size() > 0; |
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80 } |
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81 |
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82 /** |
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83 * @return {@code true} if this debug info has a reference map for the stack |
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84 */ |
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85 public boolean hasStackRefMap() { |
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86 return frameRefMap != null && frameRefMap.size() > 0; |
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87 } |
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88 |
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89 |
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90 /** |
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91 * Gets the deoptimization information for each inlined frame (if available). |
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92 * |
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93 * @return {@code null} if no frame de-opt info is {@linkplain #hasDebugFrame available} |
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94 */ |
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95 public CiFrame frame() { |
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96 if (hasFrame()) { |
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97 return (CiFrame) codePos; |
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98 } |
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99 return null; |
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100 } |
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101 |
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102 @Override |
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103 public String toString() { |
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104 return CiUtil.append(new StringBuilder(100), this, null).toString(); |
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105 } |
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106 } |