Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/jdi/LocationImpl.java @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | 37be97a58393 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.jdi; | |
| 26 | |
| 27 import com.sun.jdi.*; | |
| 28 | |
| 29 import java.util.*; | |
| 30 | |
| 31 public class LocationImpl extends MirrorImpl implements Location { | |
| 32 private final ReferenceTypeImpl declaringType; | |
| 33 private Method method; | |
| 34 private sun.jvm.hotspot.oops.Method methodRef; | |
| 35 private long codeIndex; | |
| 36 private LineInfo baseLineInfo = null; | |
| 37 private LineInfo otherLineInfo = null; | |
| 38 | |
| 39 LocationImpl(VirtualMachine vm, | |
| 40 Method method, long codeIndex) { | |
| 41 super(vm); | |
| 42 | |
| 43 this.method = method; | |
| 44 this.codeIndex = method.isNative()? -1 : codeIndex; | |
| 45 this.declaringType = (ReferenceTypeImpl)method.declaringType(); | |
| 46 } | |
| 47 | |
| 48 /* | |
| 49 * This constructor allows lazy creation of the method mirror. This | |
| 50 * can be a performance savings if the method mirror does not yet | |
| 51 * exist. | |
| 52 */ | |
| 53 LocationImpl(VirtualMachine vm, ReferenceType declaringType, | |
| 54 sun.jvm.hotspot.oops.Method methodRef, long codeIndex) { | |
| 55 super(vm); | |
| 56 | |
| 57 this.method = null; | |
| 58 this.codeIndex = codeIndex; | |
| 59 this.declaringType = (ReferenceTypeImpl)declaringType; | |
| 60 this.methodRef = methodRef; | |
| 61 } | |
| 62 | |
| 63 public boolean equals(Object obj) { | |
| 64 if ((obj != null) && (obj instanceof Location)) { | |
| 65 Location other = (Location)obj; | |
| 66 return (method().equals(other.method())) && | |
| 67 (codeIndex() == other.codeIndex()) && | |
| 68 super.equals(obj); | |
| 69 } else { | |
| 70 return false; | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 public int hashCode() { | |
| 75 /* | |
| 76 * TO DO: better hash code? | |
| 77 */ | |
| 78 return method().hashCode() + (int)codeIndex(); | |
| 79 } | |
| 80 | |
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81 public int compareTo(Location other) { |
| 0 | 82 int rc = method().compareTo(other.method()); |
| 83 if (rc == 0) { | |
| 84 long diff = codeIndex() - other.codeIndex(); | |
| 85 if (diff < 0) | |
| 86 return -1; | |
| 87 else if (diff > 0) | |
| 88 return 1; | |
| 89 else | |
| 90 return 0; | |
| 91 } | |
| 92 return rc; | |
| 93 } | |
| 94 | |
| 95 public ReferenceType declaringType() { | |
| 96 return declaringType; | |
| 97 } | |
| 98 | |
| 99 public Method method() { | |
| 100 if (method == null) { | |
| 101 method = declaringType.getMethodMirror(methodRef); | |
| 102 if (method.isNative()) { | |
| 103 codeIndex = -1; | |
| 104 } | |
| 105 } | |
| 106 return method; | |
| 107 } | |
| 108 | |
| 109 public long codeIndex() { | |
| 110 method(); // be sure information is up-to-date | |
| 111 return codeIndex; | |
| 112 } | |
| 113 | |
| 114 LineInfo getBaseLineInfo(SDE.Stratum stratum) { | |
| 115 LineInfo lineInfo; | |
| 116 | |
| 117 /* check if there is cached info to use */ | |
| 118 if (baseLineInfo != null) { | |
| 119 return baseLineInfo; | |
| 120 } | |
| 121 | |
| 122 /* compute the line info */ | |
| 123 MethodImpl methodImpl = (MethodImpl)method(); | |
| 124 lineInfo = methodImpl.codeIndexToLineInfo(stratum, | |
| 125 codeIndex()); | |
| 126 | |
| 127 /* cache it */ | |
| 128 addBaseLineInfo(lineInfo); | |
| 129 | |
| 130 return lineInfo; | |
| 131 } | |
| 132 | |
| 133 LineInfo getLineInfo(SDE.Stratum stratum) { | |
| 134 LineInfo lineInfo; | |
| 135 | |
| 136 /* base stratum is done slighly differently */ | |
| 137 if (stratum.isJava()) { | |
| 138 return getBaseLineInfo(stratum); | |
| 139 } | |
| 140 | |
| 141 /* check if there is cached info to use */ | |
| 142 lineInfo = otherLineInfo; // copy because of concurrency | |
| 143 if (lineInfo != null && | |
| 144 stratum.id().equals(lineInfo.liStratum())) { | |
| 145 return lineInfo; | |
| 146 } | |
| 147 int baseLineNumber = lineNumber(SDE.BASE_STRATUM_NAME); | |
| 148 SDE.LineStratum lineStratum = | |
| 149 stratum.lineStratum(declaringType, baseLineNumber); | |
| 150 | |
| 151 if (lineStratum != null && lineStratum.lineNumber() != -1) { | |
| 152 lineInfo = new StratumLineInfo(stratum.id(), | |
| 153 lineStratum.lineNumber(), | |
| 154 lineStratum.sourceName(), | |
| 155 lineStratum.sourcePath()); | |
| 156 } else { | |
| 157 /* find best match */ | |
| 158 MethodImpl methodImpl = (MethodImpl)method(); | |
| 159 lineInfo = methodImpl.codeIndexToLineInfo(stratum, | |
| 160 codeIndex()); | |
| 161 } | |
| 162 | |
| 163 /* cache it */ | |
| 164 addStratumLineInfo(lineInfo); | |
| 165 | |
| 166 return lineInfo; | |
| 167 } | |
| 168 | |
| 169 void addStratumLineInfo(LineInfo lineInfo) { | |
| 170 otherLineInfo = lineInfo; | |
| 171 } | |
| 172 | |
| 173 void addBaseLineInfo(LineInfo lineInfo) { | |
| 174 baseLineInfo = lineInfo; | |
| 175 } | |
| 176 | |
| 177 public String sourceName() throws AbsentInformationException { | |
| 178 return sourceName(vm.getDefaultStratum()); | |
| 179 } | |
| 180 | |
| 181 public String sourceName(String stratumID) | |
| 182 throws AbsentInformationException { | |
| 183 return sourceName(declaringType.stratum(stratumID)); | |
| 184 } | |
| 185 | |
| 186 String sourceName(SDE.Stratum stratum) | |
| 187 throws AbsentInformationException { | |
| 188 return getLineInfo(stratum).liSourceName(); | |
| 189 } | |
| 190 | |
| 191 public String sourcePath() throws AbsentInformationException { | |
| 192 return sourcePath(vm.getDefaultStratum()); | |
| 193 } | |
| 194 | |
| 195 public String sourcePath(String stratumID) | |
| 196 throws AbsentInformationException { | |
| 197 return sourcePath(declaringType.stratum(stratumID)); | |
| 198 } | |
| 199 | |
| 200 String sourcePath(SDE.Stratum stratum) | |
| 201 throws AbsentInformationException { | |
| 202 return getLineInfo(stratum).liSourcePath(); | |
| 203 } | |
| 204 | |
| 205 public int lineNumber() { | |
| 206 return lineNumber(vm.getDefaultStratum()); | |
| 207 } | |
| 208 | |
| 209 public int lineNumber(String stratumID) { | |
| 210 return lineNumber(declaringType.stratum(stratumID)); | |
| 211 } | |
| 212 | |
| 213 int lineNumber(SDE.Stratum stratum) { | |
| 214 return getLineInfo(stratum).liLineNumber(); | |
| 215 } | |
| 216 | |
| 217 public String toString() { | |
| 218 if (lineNumber() == -1) { | |
| 219 return method().toString() + "+" + codeIndex(); | |
| 220 } else { | |
| 221 return declaringType().name() + ":" + lineNumber(); | |
| 222 } | |
| 223 } | |
| 224 } |