Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/HotSpotTypeDataBase.java @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
| author | coleenp |
|---|---|
| date | Thu, 27 Jan 2011 16:11:27 -0800 |
| parents | d6cd0d55d0b5 |
| children | 1d1603768966 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2010, 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; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.types.*; | |
| 31 import sun.jvm.hotspot.types.basic.*; | |
| 32 import sun.jvm.hotspot.utilities.*; | |
| 33 | |
| 34 /** <P> This is the cross-platform TypeDataBase used by the Oop | |
| 35 hierarchy. The decision was made to make this cross-platform by | |
| 36 having the VM export the necessary symbols via a built-in table; | |
| 37 see src/share/vm/runtime/vmStructs.[ch]pp for more details. </P> | |
| 38 | |
| 39 <P> <B>WARNING</B>: clients should refer to this class through the | |
| 40 TypeDataBase interface and not directly to the HotSpotTypeDataBase | |
| 41 type. </P> | |
| 42 | |
| 43 <P> NOTE: since we are fetching the sizes of the Java primitive types | |
| 44 */ | |
| 45 | |
| 46 public class HotSpotTypeDataBase extends BasicTypeDataBase { | |
| 47 private Debugger symbolLookup; | |
| 48 private String[] jvmLibNames; | |
| 49 private static final int UNINITIALIZED_SIZE = -1; | |
| 50 private static final int C_INT8_SIZE = 1; | |
| 51 private static final int C_INT32_SIZE = 4; | |
| 52 private static final int C_INT64_SIZE = 8; | |
| 53 | |
| 54 private static final boolean DEBUG; | |
| 55 static { | |
| 56 DEBUG = System.getProperty("sun.jvm.hotspot.HotSpotTypeDataBase.DEBUG") | |
| 57 != null; | |
| 58 } | |
| 59 | |
| 60 /** <P> This requires a SymbolLookup mechanism as well as the | |
| 61 MachineDescription. Note that we do not need a NameMangler since | |
| 62 we use the vmStructs mechanism to avoid looking up C++ | |
| 63 symbols. </P> | |
| 64 | |
| 65 <P> NOTE that it is guaranteed that this constructor will not | |
| 66 attempt to fetch any Java values from the remote process, only C | |
| 67 integers and addresses. This is required because we are fetching | |
| 68 the sizes of the Java primitive types from the remote process, | |
| 69 implying that attempting to fetch them before their sizes are | |
| 70 known is illegal. </P> | |
| 71 | |
| 72 <P> Throws NoSuchSymbolException if a problem occurred while | |
| 73 looking up one of the bootstrapping symbols related to the | |
| 74 VMStructs table in the remote VM; this may indicate that the | |
| 75 remote process is not actually a HotSpot VM. </P> | |
| 76 */ | |
| 77 public HotSpotTypeDataBase(MachineDescription machDesc, | |
| 78 VtblAccess vtblAccess, | |
| 79 Debugger symbolLookup, | |
| 80 String[] jvmLibNames) throws NoSuchSymbolException { | |
| 81 super(machDesc, vtblAccess); | |
| 82 this.symbolLookup = symbolLookup; | |
| 83 this.jvmLibNames = jvmLibNames; | |
| 84 | |
| 85 readVMTypes(); | |
| 86 initializePrimitiveTypes(); | |
| 87 readVMStructs(); | |
| 88 readVMIntConstants(); | |
| 89 readVMLongConstants(); | |
| 90 } | |
| 91 | |
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92 public Type lookupType(String cTypeName, boolean throwException) { |
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93 Type fieldType = super.lookupType(cTypeName, false); |
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94 if (fieldType == null && cTypeName.startsWith("const ")) { |
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95 fieldType = (BasicType)lookupType(cTypeName.substring(6), false); |
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96 } |
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97 if (fieldType == null && cTypeName.endsWith(" const")) { |
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98 fieldType = (BasicType)lookupType(cTypeName.substring(0, cTypeName.length() - 6), false); |
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99 } |
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100 if (fieldType == null) { |
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101 if (cTypeName.startsWith("GrowableArray<") && cTypeName.endsWith(">*")) { |
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102 String ttype = cTypeName.substring("GrowableArray<".length(), |
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103 cTypeName.length() - 2); |
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104 Type templateType = lookupType(ttype, false); |
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105 if (templateType == null && typeNameIsPointerType(ttype)) { |
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106 templateType = recursiveCreateBasicPointerType(ttype); |
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107 } |
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108 if (templateType == null) { |
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109 lookupOrFail(ttype); |
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110 } |
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111 fieldType = recursiveCreateBasicPointerType(cTypeName); |
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112 } |
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113 } |
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114 if (fieldType == null && typeNameIsPointerType(cTypeName)) { |
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115 fieldType = recursiveCreateBasicPointerType(cTypeName); |
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116 } |
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117 if (fieldType == null && throwException) { |
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118 super.lookupType(cTypeName, true); |
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119 } |
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120 return fieldType; |
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121 } |
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122 |
| 0 | 123 private void readVMTypes() { |
| 124 // Get the variables we need in order to traverse the VMTypeEntry[] | |
| 125 long typeEntryTypeNameOffset; | |
| 126 long typeEntrySuperclassNameOffset; | |
| 127 long typeEntryIsOopTypeOffset; | |
| 128 long typeEntryIsIntegerTypeOffset; | |
| 129 long typeEntryIsUnsignedOffset; | |
| 130 long typeEntrySizeOffset; | |
| 131 long typeEntryArrayStride; | |
| 132 | |
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133 // Fetch the address of the VMTypeEntry*. We get this symbol first |
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134 // and try to use it to make sure that symbol lookup is working. |
| 0 | 135 Address entryAddr = lookupInProcess("gHotSpotVMTypes"); |
| 136 // System.err.println("gHotSpotVMTypes address = " + entryAddr); | |
| 137 // Dereference this once to get the pointer to the first VMTypeEntry | |
| 138 // dumpMemory(entryAddr, 80); | |
| 139 entryAddr = entryAddr.getAddressAt(0); | |
| 140 | |
| 141 if (entryAddr == null) { | |
| 142 throw new RuntimeException("gHotSpotVMTypes was not initialized properly in the remote process; can not continue"); | |
| 143 } | |
| 144 | |
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145 typeEntryTypeNameOffset = getLongValueFromProcess("gHotSpotVMTypeEntryTypeNameOffset"); |
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146 typeEntrySuperclassNameOffset = getLongValueFromProcess("gHotSpotVMTypeEntrySuperclassNameOffset"); |
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147 typeEntryIsOopTypeOffset = getLongValueFromProcess("gHotSpotVMTypeEntryIsOopTypeOffset"); |
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148 typeEntryIsIntegerTypeOffset = getLongValueFromProcess("gHotSpotVMTypeEntryIsIntegerTypeOffset"); |
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149 typeEntryIsUnsignedOffset = getLongValueFromProcess("gHotSpotVMTypeEntryIsUnsignedOffset"); |
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150 typeEntrySizeOffset = getLongValueFromProcess("gHotSpotVMTypeEntrySizeOffset"); |
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151 typeEntryArrayStride = getLongValueFromProcess("gHotSpotVMTypeEntryArrayStride"); |
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152 |
| 0 | 153 // Start iterating down it until we find an entry with no name |
| 154 Address typeNameAddr = null; | |
| 155 do { | |
| 156 // Fetch the type name first | |
| 157 typeNameAddr = entryAddr.getAddressAt(typeEntryTypeNameOffset); | |
| 158 if (typeNameAddr != null) { | |
| 159 String typeName = CStringUtilities.getString(typeNameAddr); | |
| 160 | |
| 161 String superclassName = null; | |
| 162 Address superclassNameAddr = entryAddr.getAddressAt(typeEntrySuperclassNameOffset); | |
| 163 if (superclassNameAddr != null) { | |
| 164 superclassName = CStringUtilities.getString(superclassNameAddr); | |
| 165 } | |
| 166 | |
| 167 boolean isOopType = (entryAddr.getCIntegerAt(typeEntryIsOopTypeOffset, C_INT32_SIZE, false) != 0); | |
| 168 boolean isIntegerType = (entryAddr.getCIntegerAt(typeEntryIsIntegerTypeOffset, C_INT32_SIZE, false) != 0); | |
| 169 boolean isUnsigned = (entryAddr.getCIntegerAt(typeEntryIsUnsignedOffset, C_INT32_SIZE, false) != 0); | |
| 170 long size = entryAddr.getCIntegerAt(typeEntrySizeOffset, C_INT64_SIZE, true); | |
| 171 | |
| 172 createType(typeName, superclassName, isOopType, isIntegerType, isUnsigned, size); | |
| 173 } | |
| 174 | |
| 175 entryAddr = entryAddr.addOffsetTo(typeEntryArrayStride); | |
| 176 } while (typeNameAddr != null); | |
| 177 } | |
| 178 | |
| 179 private void initializePrimitiveTypes() { | |
| 180 // Look up the needed primitive types by name...they had better be present | |
| 181 setJBooleanType(lookupPrimitiveType("jboolean")); | |
| 182 setJByteType (lookupPrimitiveType("jbyte")); | |
| 183 setJCharType (lookupPrimitiveType("jchar")); | |
| 184 setJDoubleType (lookupPrimitiveType("jdouble")); | |
| 185 setJFloatType (lookupPrimitiveType("jfloat")); | |
| 186 setJIntType (lookupPrimitiveType("jint")); | |
| 187 setJLongType (lookupPrimitiveType("jlong")); | |
| 188 setJShortType (lookupPrimitiveType("jshort")); | |
| 189 | |
| 190 // Indicate that these are the Java primitive types | |
| 191 ((BasicType) getJBooleanType()).setIsJavaPrimitiveType(true); | |
| 192 ((BasicType) getJByteType()).setIsJavaPrimitiveType(true); | |
| 193 ((BasicType) getJCharType()).setIsJavaPrimitiveType(true); | |
| 194 ((BasicType) getJDoubleType()).setIsJavaPrimitiveType(true); | |
| 195 ((BasicType) getJFloatType()).setIsJavaPrimitiveType(true); | |
| 196 ((BasicType) getJIntType()).setIsJavaPrimitiveType(true); | |
| 197 ((BasicType) getJLongType()).setIsJavaPrimitiveType(true); | |
| 198 ((BasicType) getJShortType()).setIsJavaPrimitiveType(true); | |
| 199 } | |
| 200 | |
| 201 private Type lookupPrimitiveType(String typeName) { | |
| 202 Type type = lookupType(typeName, false); | |
| 203 if (type == null) { | |
| 204 throw new RuntimeException("Error initializing the HotSpotDataBase: could not find the primitive type \"" + | |
| 205 typeName + "\" in the remote VM's VMStructs table. This type is required in " + | |
| 206 "order to determine the size of Java primitive types. Can not continue."); | |
| 207 } | |
| 208 return type; | |
| 209 } | |
| 210 | |
| 211 private void readVMStructs() { | |
| 212 // Get the variables we need in order to traverse the VMStructEntry[] | |
| 213 long structEntryTypeNameOffset; | |
| 214 long structEntryFieldNameOffset; | |
| 215 long structEntryTypeStringOffset; | |
| 216 long structEntryIsStaticOffset; | |
| 217 long structEntryOffsetOffset; | |
| 218 long structEntryAddressOffset; | |
| 219 long structEntryArrayStride; | |
| 220 | |
| 221 structEntryTypeNameOffset = getLongValueFromProcess("gHotSpotVMStructEntryTypeNameOffset"); | |
| 222 structEntryFieldNameOffset = getLongValueFromProcess("gHotSpotVMStructEntryFieldNameOffset"); | |
| 223 structEntryTypeStringOffset = getLongValueFromProcess("gHotSpotVMStructEntryTypeStringOffset"); | |
| 224 structEntryIsStaticOffset = getLongValueFromProcess("gHotSpotVMStructEntryIsStaticOffset"); | |
| 225 structEntryOffsetOffset = getLongValueFromProcess("gHotSpotVMStructEntryOffsetOffset"); | |
| 226 structEntryAddressOffset = getLongValueFromProcess("gHotSpotVMStructEntryAddressOffset"); | |
| 227 structEntryArrayStride = getLongValueFromProcess("gHotSpotVMStructEntryArrayStride"); | |
| 228 | |
| 229 // Fetch the address of the VMStructEntry* | |
| 230 Address entryAddr = lookupInProcess("gHotSpotVMStructs"); | |
| 231 // Dereference this once to get the pointer to the first VMStructEntry | |
| 232 entryAddr = entryAddr.getAddressAt(0); | |
| 233 if (entryAddr == null) { | |
| 234 throw new RuntimeException("gHotSpotVMStructs was not initialized properly in the remote process; can not continue"); | |
| 235 } | |
| 236 | |
| 237 // Start iterating down it until we find an entry with no name | |
| 238 Address fieldNameAddr = null; | |
| 239 String typeName = null; | |
| 240 String fieldName = null; | |
| 241 String typeString = null; | |
| 242 boolean isStatic = false; | |
| 243 long offset = 0; | |
| 244 Address staticFieldAddr = null; | |
| 245 long size = 0; | |
| 246 long index = 0; | |
| 247 String opaqueName = "<opaque>"; | |
| 248 lookupOrCreateClass(opaqueName, false, false, false); | |
| 249 | |
| 250 do { | |
| 251 // Fetch the field name first | |
| 252 fieldNameAddr = entryAddr.getAddressAt(structEntryFieldNameOffset); | |
| 253 if (fieldNameAddr != null) { | |
| 254 fieldName = CStringUtilities.getString(fieldNameAddr); | |
| 255 | |
| 256 // Now the rest of the names. Keep in mind that the type name | |
| 257 // may be NULL, indicating that the type is opaque. | |
| 258 Address addr = entryAddr.getAddressAt(structEntryTypeNameOffset); | |
| 259 if (addr == null) { | |
| 260 throw new RuntimeException("gHotSpotVMStructs unexpectedly had a NULL type name at index " + index); | |
| 261 } | |
| 262 typeName = CStringUtilities.getString(addr); | |
| 263 | |
| 264 addr = entryAddr.getAddressAt(structEntryTypeStringOffset); | |
| 265 if (addr == null) { | |
| 266 typeString = opaqueName; | |
| 267 } else { | |
| 268 typeString = CStringUtilities.getString(addr); | |
| 269 } | |
| 270 | |
| 271 isStatic = !(entryAddr.getCIntegerAt(structEntryIsStaticOffset, C_INT32_SIZE, false) == 0); | |
| 272 if (isStatic) { | |
| 273 staticFieldAddr = entryAddr.getAddressAt(structEntryAddressOffset); | |
| 274 offset = 0; | |
| 275 } else { | |
| 276 offset = entryAddr.getCIntegerAt(structEntryOffsetOffset, C_INT64_SIZE, true); | |
| 277 staticFieldAddr = null; | |
| 278 } | |
| 279 | |
| 280 // The containing Type must already be in the database -- no exceptions | |
| 281 BasicType containingType = lookupOrFail(typeName); | |
| 282 | |
| 283 // The field's Type must already be in the database -- no exceptions | |
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284 BasicType fieldType = (BasicType)lookupType(typeString); |
| 0 | 285 |
| 286 // Create field by type | |
| 287 createField(containingType, fieldName, fieldType, | |
| 288 isStatic, offset, staticFieldAddr); | |
| 289 } | |
| 290 | |
| 291 ++index; | |
| 292 entryAddr = entryAddr.addOffsetTo(structEntryArrayStride); | |
| 293 } while (fieldNameAddr != null); | |
| 294 } | |
| 295 | |
| 296 private void readVMIntConstants() { | |
| 297 // Get the variables we need in order to traverse the VMIntConstantEntry[] | |
| 298 long intConstantEntryNameOffset; | |
| 299 long intConstantEntryValueOffset; | |
| 300 long intConstantEntryArrayStride; | |
| 301 | |
| 302 intConstantEntryNameOffset = getLongValueFromProcess("gHotSpotVMIntConstantEntryNameOffset"); | |
| 303 intConstantEntryValueOffset = getLongValueFromProcess("gHotSpotVMIntConstantEntryValueOffset"); | |
| 304 intConstantEntryArrayStride = getLongValueFromProcess("gHotSpotVMIntConstantEntryArrayStride"); | |
| 305 | |
| 306 // Fetch the address of the VMIntConstantEntry* | |
| 307 Address entryAddr = lookupInProcess("gHotSpotVMIntConstants"); | |
| 308 // Dereference this once to get the pointer to the first VMIntConstantEntry | |
| 309 entryAddr = entryAddr.getAddressAt(0); | |
| 310 if (entryAddr == null) { | |
| 311 throw new RuntimeException("gHotSpotVMIntConstants was not initialized properly in the remote process; can not continue"); | |
| 312 } | |
| 313 | |
| 314 // Start iterating down it until we find an entry with no name | |
| 315 Address nameAddr = null; | |
| 316 do { | |
| 317 // Fetch the type name first | |
| 318 nameAddr = entryAddr.getAddressAt(intConstantEntryNameOffset); | |
| 319 if (nameAddr != null) { | |
| 320 String name = CStringUtilities.getString(nameAddr); | |
| 321 int value = (int) entryAddr.getCIntegerAt(intConstantEntryValueOffset, C_INT32_SIZE, false); | |
| 322 | |
| 323 // Be a little resilient | |
| 324 Integer oldValue = lookupIntConstant(name, false); | |
| 325 if (oldValue == null) { | |
| 326 addIntConstant(name, value); | |
| 327 } else { | |
| 328 if (oldValue.intValue() != value) { | |
| 329 throw new RuntimeException("Error: the integer constant \"" + name + | |
| 330 "\" had its value redefined (old was " + oldValue + | |
| 331 ", new is " + value + ". Aborting."); | |
| 332 } else { | |
| 333 System.err.println("Warning: the int constant \"" + name + "\" (declared in the remote VM in VMStructs::localHotSpotVMIntConstants) " + | |
| 334 "had its value declared as " + value + " twice. Continuing."); | |
| 335 } | |
| 336 } | |
| 337 } | |
| 338 | |
| 339 entryAddr = entryAddr.addOffsetTo(intConstantEntryArrayStride); | |
| 340 } while (nameAddr != null); | |
| 341 } | |
| 342 | |
| 343 private void readVMLongConstants() { | |
| 344 // Get the variables we need in order to traverse the VMLongConstantEntry[] | |
| 345 long longConstantEntryNameOffset; | |
| 346 long longConstantEntryValueOffset; | |
| 347 long longConstantEntryArrayStride; | |
| 348 | |
| 349 longConstantEntryNameOffset = getLongValueFromProcess("gHotSpotVMLongConstantEntryNameOffset"); | |
| 350 longConstantEntryValueOffset = getLongValueFromProcess("gHotSpotVMLongConstantEntryValueOffset"); | |
| 351 longConstantEntryArrayStride = getLongValueFromProcess("gHotSpotVMLongConstantEntryArrayStride"); | |
| 352 | |
| 353 // Fetch the address of the VMLongConstantEntry* | |
| 354 Address entryAddr = lookupInProcess("gHotSpotVMLongConstants"); | |
| 355 // Dereference this once to get the pointer to the first VMLongConstantEntry | |
| 356 entryAddr = entryAddr.getAddressAt(0); | |
| 357 if (entryAddr == null) { | |
| 358 throw new RuntimeException("gHotSpotVMLongConstants was not initialized properly in the remote process; can not continue"); | |
| 359 } | |
| 360 | |
| 361 // Start iterating down it until we find an entry with no name | |
| 362 Address nameAddr = null; | |
| 363 do { | |
| 364 // Fetch the type name first | |
| 365 nameAddr = entryAddr.getAddressAt(longConstantEntryNameOffset); | |
| 366 if (nameAddr != null) { | |
| 367 String name = CStringUtilities.getString(nameAddr); | |
| 368 int value = (int) entryAddr.getCIntegerAt(longConstantEntryValueOffset, C_INT64_SIZE, true); | |
| 369 | |
| 370 // Be a little resilient | |
| 371 Long oldValue = lookupLongConstant(name, false); | |
| 372 if (oldValue == null) { | |
| 373 addLongConstant(name, value); | |
| 374 } else { | |
| 375 if (oldValue.longValue() != value) { | |
| 376 throw new RuntimeException("Error: the long constant \"" + name + | |
| 377 "\" had its value redefined (old was " + oldValue + | |
| 378 ", new is " + value + ". Aborting."); | |
| 379 } else { | |
| 380 System.err.println("Warning: the long constant \"" + name + "\" (declared in the remote VM in VMStructs::localHotSpotVMLongConstants) " + | |
| 381 "had its value declared as " + value + " twice. Continuing."); | |
| 382 } | |
| 383 } | |
| 384 } | |
| 385 | |
| 386 entryAddr = entryAddr.addOffsetTo(longConstantEntryArrayStride); | |
| 387 } while (nameAddr != null); | |
| 388 } | |
| 389 | |
| 390 private BasicType lookupOrFail(String typeName) { | |
| 391 BasicType type = (BasicType) lookupType(typeName, false); | |
| 392 if (type == null) { | |
| 393 throw new RuntimeException("Type \"" + typeName + "\", referenced in VMStructs::localHotSpotVMStructs in the remote VM, " + | |
| 394 "was not present in the remote VMStructs::localHotSpotVMTypes table (should have been caught " + | |
| 395 "in the debug build of that VM). Can not continue."); | |
| 396 } | |
| 397 return type; | |
| 398 } | |
| 399 | |
| 400 private long getLongValueFromProcess(String symbol) { | |
| 401 return lookupInProcess(symbol).getCIntegerAt(0, C_INT64_SIZE, true); | |
| 402 } | |
| 403 | |
| 404 private Address lookupInProcess(String symbol) throws NoSuchSymbolException { | |
| 405 // FIXME: abstract away the loadobject name | |
| 406 for (int i = 0; i < jvmLibNames.length; i++) { | |
| 407 Address addr = symbolLookup.lookup(jvmLibNames[i], symbol); | |
| 408 if (addr != null) { | |
| 409 return addr; | |
| 410 } | |
| 411 } | |
| 412 String errStr = "("; | |
| 413 for (int i = 0; i < jvmLibNames.length; i++) { | |
| 414 errStr += jvmLibNames[i]; | |
| 415 if (i < jvmLibNames.length - 1) { | |
| 416 errStr += ", "; | |
| 417 } | |
| 418 } | |
| 419 errStr += ")"; | |
| 420 throw new NoSuchSymbolException(symbol, | |
| 421 "Could not find symbol \"" + symbol + | |
| 422 "\" in any of the known library names " + | |
| 423 errStr); | |
| 424 } | |
| 425 | |
| 426 private BasicType lookupOrCreateClass(String typeName, boolean isOopType, | |
| 427 boolean isIntegerType, boolean isUnsigned) { | |
| 428 BasicType type = (BasicType) lookupType(typeName, false); | |
| 429 if (type == null) { | |
| 430 // Create a new type | |
| 431 type = createBasicType(typeName, isOopType, isIntegerType, isUnsigned); | |
| 432 } | |
| 433 return type; | |
| 434 } | |
| 435 | |
| 436 /** Creates a new BasicType, initializes its size to -1 so we can | |
| 437 test to ensure that all types' sizes are initialized by VMTypes, | |
| 438 and adds it to the database. Takes care of initializing integer | |
| 439 and oop types properly. */ | |
| 440 private BasicType createBasicType(String typeName, boolean isOopType, | |
| 441 boolean isIntegerType, boolean isUnsigned) { | |
| 442 | |
| 443 BasicType type = null; | |
| 444 | |
| 445 if (isIntegerType) { | |
| 446 type = new BasicCIntegerType(this, typeName, isUnsigned); | |
| 447 } else { | |
| 448 if (typeNameIsPointerType(typeName)) { | |
| 449 type = recursiveCreateBasicPointerType(typeName); | |
| 450 } else { | |
| 451 type = new BasicType(this, typeName); | |
| 452 } | |
| 453 | |
| 454 if (isOopType) { | |
| 455 // HACK: turn markOop into a C integer type. This allows | |
| 456 // proper handling of it in the Serviceability Agent. (FIXME | |
| 457 // -- consider doing something different here) | |
| 458 if (typeName.equals("markOop")) { | |
| 459 type = new BasicCIntegerType(this, typeName, true); | |
| 460 } else { | |
| 461 type.setIsOopType(true); | |
| 462 } | |
| 463 } | |
| 464 } | |
| 465 | |
| 466 type.setSize(UNINITIALIZED_SIZE); | |
| 467 addType(type); | |
| 468 return type; | |
| 469 } | |
| 470 | |
| 471 /** Recursively creates a PointerType from the string representation | |
| 472 of the type's name. Note that this currently needs some | |
| 473 workarounds due to incomplete information in the VMStructs | |
| 474 database. */ | |
| 475 private BasicPointerType recursiveCreateBasicPointerType(String typeName) { | |
|
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476 BasicPointerType result = (BasicPointerType)super.lookupType(typeName, false); |
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477 if (result != null) { |
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478 return result; |
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479 } |
| 0 | 480 String targetTypeName = typeName.substring(0, typeName.lastIndexOf('*')).trim(); |
| 481 Type targetType = null; | |
| 482 if (typeNameIsPointerType(targetTypeName)) { | |
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483 targetType = lookupType(targetTypeName, false); |
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484 if (targetType == null) { |
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485 targetType = recursiveCreateBasicPointerType(targetTypeName); |
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486 } |
| 0 | 487 } else { |
| 488 targetType = lookupType(targetTypeName, false); | |
| 489 if (targetType == null) { | |
| 490 // Workaround for missing C integer types in database. | |
| 491 // Also looks like we can't throw an exception for other | |
| 492 // missing target types because there are some in old | |
| 493 // VMStructs tables that didn't have the target type declared. | |
| 494 // For this case, we create basic types that never get filled | |
| 495 // in. | |
| 496 | |
| 497 if (targetTypeName.equals("char") || | |
| 498 targetTypeName.equals("const char")) { | |
| 499 // We don't have a representation of const-ness of C types in the SA | |
| 500 BasicType basicTargetType = createBasicType(targetTypeName, false, true, false); | |
| 501 basicTargetType.setSize(1); | |
| 502 targetType = basicTargetType; | |
| 503 } else if (targetTypeName.equals("u_char")) { | |
| 504 BasicType basicTargetType = createBasicType(targetTypeName, false, true, true); | |
| 505 basicTargetType.setSize(1); | |
| 506 targetType = basicTargetType; | |
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507 } else if (targetTypeName.startsWith("GrowableArray<")) { |
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508 BasicType basicTargetType = createBasicType(targetTypeName, false, false, false); |
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509 |
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510 // transfer fields from GenericGrowableArray to template instance |
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511 BasicType generic = lookupOrFail("GenericGrowableArray"); |
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512 basicTargetType.setSize(generic.getSize()); |
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513 Iterator fields = generic.getFields(); |
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514 while (fields.hasNext()) { |
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515 Field f = (Field)fields.next(); |
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516 basicTargetType.addField(internalCreateField(basicTargetType, f.getName(), |
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517 f.getType(), f.isStatic(), |
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518 f.getOffset(), null)); |
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519 } |
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520 targetType = basicTargetType; |
| 0 | 521 } else { |
| 522 if (DEBUG) { | |
| 523 System.err.println("WARNING: missing target type \"" + targetTypeName + "\" for pointer type \"" + typeName + "\""); | |
| 524 } | |
| 525 targetType = createBasicType(targetTypeName, false, false, false); | |
| 526 } | |
| 527 } | |
| 528 } | |
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529 result = new BasicPointerType(this, typeName, targetType); |
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530 result.setSize(UNINITIALIZED_SIZE); |
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531 addType(result); |
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532 return result; |
| 0 | 533 } |
| 534 | |
| 535 private boolean typeNameIsPointerType(String typeName) { | |
| 536 int i = typeName.length() - 1; | |
| 537 while (i >= 0 && Character.isWhitespace(typeName.charAt(i))) { | |
| 538 --i; | |
| 539 } | |
| 540 if (i >= 0 && typeName.charAt(i) == '*') { | |
| 541 return true; | |
| 542 } | |
| 543 return false; | |
| 544 } | |
| 545 | |
| 546 public void createType(String typeName, String superclassName, | |
| 547 boolean isOopType, boolean isIntegerType, | |
| 548 boolean isUnsigned, long size) { | |
| 549 // See whether we have a superclass | |
| 550 BasicType superclass = null; | |
| 551 if (superclassName != null) { | |
| 552 // Fetch or create it (FIXME: would get oop types wrong if | |
| 553 // they had a hierarchy; consider using lookupOrFail) | |
| 554 superclass = lookupOrCreateClass(superclassName, false, false, false); | |
| 555 } | |
| 556 | |
| 557 // Lookup or create the current type | |
| 558 BasicType curType = lookupOrCreateClass(typeName, isOopType, isIntegerType, isUnsigned); | |
| 559 // Set superclass and/or ensure it's correct | |
| 560 if (superclass != null) { | |
| 561 if (curType.getSuperclass() == null) { | |
| 562 // Set the superclass in the current type | |
| 563 curType.setSuperclass(superclass); | |
| 564 } | |
| 565 | |
| 566 if (curType.getSuperclass() != superclass) { | |
| 567 throw new RuntimeException("Error: the type \"" + typeName + "\" (declared in the remote VM in VMStructs::localHotSpotVMTypes) " + | |
| 568 "had its superclass redefined (old was " + curType.getSuperclass().getName() + ", new is " + | |
| 569 superclass.getName() + ")."); | |
| 570 } | |
| 571 } | |
| 572 | |
| 573 // Classes are created with a size of UNINITIALIZED_SIZE. | |
| 574 // Set size if necessary. | |
| 575 if (curType.getSize() == UNINITIALIZED_SIZE) { | |
| 576 curType.setSize(size); | |
| 577 } else { | |
| 578 if (curType.getSize() != size) { | |
| 579 throw new RuntimeException("Error: the type \"" + typeName + "\" (declared in the remote VM in VMStructs::localHotSpotVMTypes) " + | |
| 580 "had its size redefined (old was " + curType.getSize() + ", new is " + size + ")."); | |
| 581 } | |
| 582 | |
| 583 System.err.println("Warning: the type \"" + typeName + "\" (declared in the remote VM in VMStructs::localHotSpotVMTypes) " + | |
| 584 "had its size declared as " + size + " twice. Continuing."); | |
| 585 } | |
| 586 | |
| 587 } | |
| 588 | |
| 589 /** "Virtual constructor" for fields based on type */ | |
| 590 public void createField(BasicType containingType, | |
| 591 String name, Type type, boolean isStatic, | |
| 592 long offset, Address staticFieldAddress) { | |
| 593 // Add field to containing type | |
| 594 containingType.addField(internalCreateField(containingType, name, type, isStatic, offset, staticFieldAddress)); | |
| 595 } | |
| 596 | |
| 597 Field internalCreateField(BasicType containingType, | |
| 598 String name, Type type, boolean isStatic, | |
| 599 long offset, Address staticFieldAddress) { | |
| 600 // "Virtual constructor" based on type | |
| 601 if (type.isOopType()) { | |
| 602 return new BasicOopField(this, containingType, name, type, | |
| 603 isStatic, offset, staticFieldAddress); | |
| 604 } | |
| 605 | |
| 606 if (type instanceof CIntegerType) { | |
| 607 return new BasicCIntegerField(this, containingType, name, type, | |
| 608 isStatic, offset, staticFieldAddress); | |
| 609 } | |
| 610 | |
| 611 if (type.equals(getJBooleanType())) { | |
| 612 return new BasicJBooleanField(this, containingType, name, type, | |
| 613 isStatic, offset, staticFieldAddress); | |
| 614 } | |
| 615 | |
| 616 if (type.equals(getJByteType())) { | |
| 617 return new BasicJByteField(this, containingType, name, type, | |
| 618 isStatic, offset, staticFieldAddress); | |
| 619 } | |
| 620 | |
| 621 if (type.equals(getJCharType())) { | |
| 622 return new BasicJCharField(this, containingType, name, type, | |
| 623 isStatic, offset, staticFieldAddress); | |
| 624 } | |
| 625 | |
| 626 if (type.equals(getJDoubleType())) { | |
| 627 return new BasicJDoubleField(this, containingType, name, type, | |
| 628 isStatic, offset, staticFieldAddress); | |
| 629 } | |
| 630 | |
| 631 if (type.equals(getJFloatType())) { | |
| 632 return new BasicJFloatField(this, containingType, name, type, | |
| 633 isStatic, offset, staticFieldAddress); | |
| 634 } | |
| 635 | |
| 636 if (type.equals(getJIntType())) { | |
| 637 return new BasicJIntField(this, containingType, name, type, | |
| 638 isStatic, offset, staticFieldAddress); | |
| 639 } | |
| 640 | |
| 641 if (type.equals(getJLongType())) { | |
| 642 return new BasicJLongField(this, containingType, name, type, | |
| 643 isStatic, offset, staticFieldAddress); | |
| 644 } | |
| 645 | |
| 646 if (type.equals(getJShortType())) { | |
| 647 return new BasicJShortField(this, containingType, name, type, | |
| 648 isStatic, offset, staticFieldAddress); | |
| 649 } | |
| 650 | |
| 651 // Unknown ("opaque") type. Instantiate ordinary Field. | |
| 652 return new BasicField(this, containingType, name, type, | |
| 653 isStatic, offset, staticFieldAddress); | |
| 654 } | |
| 655 | |
| 656 // For debugging | |
| 657 private void dumpMemory(Address addr, int len) { | |
| 658 int i = 0; | |
| 659 while (i < len) { | |
| 660 System.err.print(addr.addOffsetTo(i) + ":"); | |
| 661 for (int j = 0; j < 8 && i < len; i++, j++) { | |
| 662 String s = Long.toHexString(addr.getCIntegerAt(i, 1, true)); | |
| 663 System.err.print(" 0x"); | |
| 664 for (int k = 0; k < 2 - s.length(); k++) { | |
| 665 System.err.print("0"); | |
| 666 } | |
| 667 System.err.print(s); | |
| 668 } | |
| 669 System.err.println(); | |
| 670 } | |
| 671 } | |
| 672 } |