Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPool.java @ 4962:38fd165da001
7145358: SA throws ClassCastException for partially loaded ConstantPool
Summary: In printValueOn() in ConstantPool.java check if the poolHolder is a valid Klass and only then print it.
Reviewed-by: sla, sspitsyn
Contributed-by: Krystal Mok <sajia@taobao.com>
| author | poonam |
|---|---|
| date | Mon, 20 Feb 2012 21:27:56 -0800 |
| parents | 6a991dcb52bb |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 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.oops; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 import sun.jvm.hotspot.utilities.*; | |
| 33 | |
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34 // A ConstantPool is an oop containing class constants |
| 0 | 35 // as described in the class file |
| 36 | |
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37 public class ConstantPool extends Oop implements ClassConstants { |
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38 |
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39 public class CPSlot { |
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40 private Address ptr; |
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41 |
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42 CPSlot(Address ptr) { |
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43 this.ptr = ptr; |
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44 } |
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45 CPSlot(Symbol sym) { |
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46 this.ptr = sym.getAddress().orWithMask(1); |
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47 } |
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48 |
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49 public boolean isOop() { |
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50 return (ptr.minus(null) & 1) == 0; |
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51 } |
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52 public boolean isMetaData() { |
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53 return (ptr.minus(null) & 1) == 1; |
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54 } |
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55 |
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56 public Symbol getSymbol() { |
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57 if (isMetaData()) { |
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58 return Symbol.create(ptr.xorWithMask(1)); |
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59 } |
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60 throw new InternalError("not a symbol"); |
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61 } |
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62 public Oop getOop() { |
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63 if (isOop()) { |
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64 return VM.getVM().getObjectHeap().newOop(ptr.addOffsetToAsOopHandle(0)); |
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65 } |
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66 throw new InternalError("not an oop"); |
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67 } |
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68 } |
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69 |
| 0 | 70 // Used for debugging this code |
| 71 private static final boolean DEBUG = false; | |
| 72 | |
| 73 protected void debugMessage(String message) { | |
| 74 System.out.println(message); | |
| 75 } | |
| 76 | |
| 77 static { | |
| 78 VM.registerVMInitializedObserver(new Observer() { | |
| 79 public void update(Observable o, Object data) { | |
| 80 initialize(VM.getVM().getTypeDataBase()); | |
| 81 } | |
| 82 }); | |
| 83 } | |
| 84 | |
| 85 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
| 86 Type type = db.lookupType("constantPoolOopDesc"); | |
| 87 tags = new OopField(type.getOopField("_tags"), 0); | |
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88 operands = new OopField(type.getOopField("_operands"), 0); |
| 0 | 89 cache = new OopField(type.getOopField("_cache"), 0); |
| 90 poolHolder = new OopField(type.getOopField("_pool_holder"), 0); | |
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91 length = new CIntField(type.getCIntegerField("_length"), 0); |
| 0 | 92 headerSize = type.getSize(); |
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93 elementSize = 0; |
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94 // fetch constants: |
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95 INDY_BSM_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_bsm_offset").intValue(); |
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96 INDY_ARGC_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_argc_offset").intValue(); |
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97 INDY_ARGV_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_argv_offset").intValue(); |
| 0 | 98 } |
| 99 | |
| 100 ConstantPool(OopHandle handle, ObjectHeap heap) { | |
| 101 super(handle, heap); | |
| 102 } | |
| 103 | |
| 104 public boolean isConstantPool() { return true; } | |
| 105 | |
| 106 private static OopField tags; | |
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107 private static OopField operands; |
| 0 | 108 private static OopField cache; |
| 109 private static OopField poolHolder; | |
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110 private static CIntField length; // number of elements in oop |
| 0 | 111 |
| 112 private static long headerSize; | |
| 113 private static long elementSize; | |
| 114 | |
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115 private static int INDY_BSM_OFFSET; |
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116 private static int INDY_ARGC_OFFSET; |
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117 private static int INDY_ARGV_OFFSET; |
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118 |
| 0 | 119 public TypeArray getTags() { return (TypeArray) tags.getValue(this); } |
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120 public TypeArray getOperands() { return (TypeArray) operands.getValue(this); } |
| 0 | 121 public ConstantPoolCache getCache() { return (ConstantPoolCache) cache.getValue(this); } |
| 122 public Klass getPoolHolder() { return (Klass) poolHolder.getValue(this); } | |
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123 public int getLength() { return (int)length.getValue(this); } |
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124 |
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125 private long getElementSize() { |
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126 if (elementSize !=0 ) { |
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127 return elementSize; |
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128 } else { |
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129 elementSize = VM.getVM().getOopSize(); |
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130 } |
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131 return elementSize; |
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132 } |
| 0 | 133 |
| 134 private long indexOffset(long index) { | |
| 135 if (Assert.ASSERTS_ENABLED) { | |
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136 Assert.that(index > 0 && index < getLength(), "invalid cp index " + index + " " + getLength()); |
| 0 | 137 } |
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138 return (index * getElementSize()) + headerSize; |
| 0 | 139 } |
| 140 | |
| 141 public ConstantTag getTagAt(long index) { | |
| 142 return new ConstantTag(getTags().getByteAt((int) index)); | |
| 143 } | |
| 144 | |
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145 public CPSlot getSlotAt(long index) { |
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146 return new CPSlot(getHandle().getAddressAt(indexOffset(index))); |
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147 } |
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148 |
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149 public Oop getObjAtRaw(long index){ |
| 0 | 150 return getHeap().newOop(getHandle().getOopHandleAt(indexOffset(index))); |
| 151 } | |
| 152 | |
| 153 public Symbol getSymbolAt(long index) { | |
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154 CPSlot slot = getSlotAt(index); |
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155 return slot.getSymbol(); |
| 0 | 156 } |
| 157 | |
| 158 public int getIntAt(long index){ | |
| 159 return getHandle().getJIntAt(indexOffset(index)); | |
| 160 } | |
| 161 | |
| 162 public float getFloatAt(long index){ | |
| 163 return getHandle().getJFloatAt(indexOffset(index)); | |
| 164 } | |
| 165 | |
| 166 public long getLongAt(long index) { | |
| 167 int oneHalf = getHandle().getJIntAt(indexOffset(index + 1)); | |
| 168 int otherHalf = getHandle().getJIntAt(indexOffset(index)); | |
| 169 // buildLongFromIntsPD accepts higher address value, lower address value | |
| 170 // in that order. | |
| 171 return VM.getVM().buildLongFromIntsPD(oneHalf, otherHalf); | |
| 172 } | |
| 173 | |
| 174 public double getDoubleAt(long index) { | |
| 175 return Double.longBitsToDouble(getLongAt(index)); | |
| 176 } | |
| 177 | |
| 178 public int getFieldOrMethodAt(int which) { | |
| 179 if (DEBUG) { | |
| 180 System.err.print("ConstantPool.getFieldOrMethodAt(" + which + "): new index = "); | |
| 181 } | |
| 182 int i = -1; | |
| 183 ConstantPoolCache cache = getCache(); | |
| 184 if (cache == null) { | |
| 185 i = which; | |
| 186 } else { | |
| 187 // change byte-ordering and go via cache | |
| 188 i = cache.getEntryAt(0xFFFF & VM.getVM().getBytes().swapShort((short) which)).getConstantPoolIndex(); | |
| 189 } | |
| 190 if (Assert.ASSERTS_ENABLED) { | |
| 191 Assert.that(getTagAt(i).isFieldOrMethod(), "Corrupted constant pool"); | |
| 192 } | |
| 193 if (DEBUG) { | |
| 194 System.err.println(i); | |
| 195 } | |
| 196 int res = getIntAt(i); | |
| 197 if (DEBUG) { | |
| 198 System.err.println("ConstantPool.getFieldOrMethodAt(" + i + "): result = " + res); | |
| 199 } | |
| 200 return res; | |
| 201 } | |
| 202 | |
| 1602 | 203 public int[] getNameAndTypeAt(int which) { |
| 0 | 204 if (Assert.ASSERTS_ENABLED) { |
| 205 Assert.that(getTagAt(which).isNameAndType(), "Corrupted constant pool"); | |
| 206 } | |
| 207 int i = getIntAt(which); | |
| 208 if (DEBUG) { | |
| 209 System.err.println("ConstantPool.getNameAndTypeAt(" + which + "): result = " + i); | |
| 210 } | |
| 1602 | 211 return new int[] { extractLowShortFromInt(i), extractHighShortFromInt(i) }; |
| 0 | 212 } |
| 213 | |
| 214 public Symbol getNameRefAt(int which) { | |
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215 return implGetNameRefAt(which, false); |
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216 } |
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217 |
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218 private Symbol implGetNameRefAt(int which, boolean uncached) { |
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219 int signatureIndex = getNameRefIndexAt(implNameAndTypeRefIndexAt(which, uncached)); |
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220 return getSymbolAt(signatureIndex); |
| 0 | 221 } |
| 222 | |
| 223 public Symbol getSignatureRefAt(int which) { | |
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224 return implGetSignatureRefAt(which, false); |
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225 } |
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226 |
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227 private Symbol implGetSignatureRefAt(int which, boolean uncached) { |
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228 int signatureIndex = getSignatureRefIndexAt(implNameAndTypeRefIndexAt(which, uncached)); |
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229 return getSymbolAt(signatureIndex); |
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230 } |
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231 |
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232 |
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233 private int implNameAndTypeRefIndexAt(int which, boolean uncached) { |
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234 int i = which; |
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235 if (!uncached && getCache() != null) { |
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236 if (ConstantPoolCache.isSecondaryIndex(which)) { |
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237 // Invokedynamic index. |
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238 int pool_index = getCache().getMainEntryAt(which).getConstantPoolIndex(); |
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239 pool_index = invokeDynamicNameAndTypeRefIndexAt(pool_index); |
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240 // assert(tagAt(pool_index).isNameAndType(), ""); |
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241 return pool_index; |
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242 } |
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243 // change byte-ordering and go via cache |
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244 i = remapInstructionOperandFromCache(which); |
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245 } else { |
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246 if (getTagAt(which).isInvokeDynamic()) { |
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247 int pool_index = invokeDynamicNameAndTypeRefIndexAt(which); |
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248 // assert(tag_at(pool_index).is_name_and_type(), ""); |
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249 return pool_index; |
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250 } |
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251 } |
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252 // assert(tag_at(i).is_field_or_method(), "Corrupted constant pool"); |
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253 // assert(!tag_at(i).is_invoke_dynamic(), "Must be handled above"); |
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254 int ref_index = getIntAt(i); |
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255 return extractHighShortFromInt(ref_index); |
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256 } |
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257 |
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258 private int remapInstructionOperandFromCache(int operand) { |
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259 int cpc_index = operand; |
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260 // DEBUG_ONLY(cpc_index -= CPCACHE_INDEX_TAG); |
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261 // assert((int)(u2)cpc_index == cpc_index, "clean u2"); |
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262 int member_index = getCache().getEntryAt(cpc_index).getConstantPoolIndex(); |
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263 return member_index; |
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264 } |
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265 |
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266 int invokeDynamicNameAndTypeRefIndexAt(int which) { |
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267 // assert(tag_at(which).is_invoke_dynamic(), "Corrupted constant pool"); |
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268 return extractHighShortFromInt(getIntAt(which)); |
| 0 | 269 } |
| 270 | |
| 271 // returns null, if not resolved. | |
| 272 public Klass getKlassRefAt(int which) { | |
| 273 if( ! getTagAt(which).isKlass()) return null; | |
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274 return (Klass) getObjAtRaw(which); |
| 0 | 275 } |
| 276 | |
| 277 // returns null, if not resolved. | |
| 278 public InstanceKlass getFieldOrMethodKlassRefAt(int which) { | |
| 279 int refIndex = getFieldOrMethodAt(which); | |
| 280 int klassIndex = extractLowShortFromInt(refIndex); | |
| 281 return (InstanceKlass) getKlassRefAt(klassIndex); | |
| 282 } | |
| 283 | |
| 284 // returns null, if not resolved. | |
| 285 public Method getMethodRefAt(int which) { | |
| 286 InstanceKlass klass = getFieldOrMethodKlassRefAt(which); | |
| 287 if (klass == null) return null; | |
| 288 Symbol name = getNameRefAt(which); | |
| 289 Symbol sig = getSignatureRefAt(which); | |
| 290 return klass.findMethod(name, sig); | |
| 291 } | |
| 292 | |
| 293 // returns null, if not resolved. | |
| 294 public Field getFieldRefAt(int which) { | |
| 295 InstanceKlass klass = getFieldOrMethodKlassRefAt(which); | |
| 296 if (klass == null) return null; | |
| 297 Symbol name = getNameRefAt(which); | |
| 298 Symbol sig = getSignatureRefAt(which); | |
| 299 return klass.findField(name, sig); | |
| 300 } | |
| 301 | |
| 302 public int getNameAndTypeRefIndexAt(int index) { | |
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303 return implNameAndTypeRefIndexAt(index, false); |
| 0 | 304 } |
| 305 | |
| 306 /** Lookup for entries consisting of (name_index, signature_index) */ | |
| 307 public int getNameRefIndexAt(int index) { | |
| 1602 | 308 int[] refIndex = getNameAndTypeAt(index); |
| 0 | 309 if (DEBUG) { |
| 1602 | 310 System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): refIndex = " + refIndex[0]+"/"+refIndex[1]); |
| 0 | 311 } |
| 1602 | 312 int i = refIndex[0]; |
| 0 | 313 if (DEBUG) { |
| 314 System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): result = " + i); | |
| 315 } | |
| 316 return i; | |
| 317 } | |
| 318 | |
| 319 /** Lookup for entries consisting of (name_index, signature_index) */ | |
| 320 public int getSignatureRefIndexAt(int index) { | |
| 1602 | 321 int[] refIndex = getNameAndTypeAt(index); |
| 0 | 322 if (DEBUG) { |
| 1602 | 323 System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): refIndex = " + refIndex[0]+"/"+refIndex[1]); |
| 0 | 324 } |
| 1602 | 325 int i = refIndex[1]; |
| 0 | 326 if (DEBUG) { |
| 327 System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): result = " + i); | |
| 328 } | |
| 329 return i; | |
| 330 } | |
| 331 | |
| 1602 | 332 /** Lookup for MethodHandle entries. */ |
| 333 public int getMethodHandleIndexAt(int i) { | |
| 334 if (Assert.ASSERTS_ENABLED) { | |
| 335 Assert.that(getTagAt(i).isMethodHandle(), "Corrupted constant pool"); | |
| 336 } | |
| 337 int res = extractHighShortFromInt(getIntAt(i)); | |
| 338 if (DEBUG) { | |
| 339 System.err.println("ConstantPool.getMethodHandleIndexAt(" + i + "): result = " + res); | |
| 340 } | |
| 341 return res; | |
| 342 } | |
| 343 | |
| 344 /** Lookup for MethodHandle entries. */ | |
| 345 public int getMethodHandleRefKindAt(int i) { | |
| 346 if (Assert.ASSERTS_ENABLED) { | |
| 347 Assert.that(getTagAt(i).isMethodHandle(), "Corrupted constant pool"); | |
| 348 } | |
| 349 int res = extractLowShortFromInt(getIntAt(i)); | |
| 350 if (DEBUG) { | |
| 351 System.err.println("ConstantPool.getMethodHandleRefKindAt(" + i + "): result = " + res); | |
| 352 } | |
| 353 return res; | |
| 354 } | |
| 355 | |
| 356 /** Lookup for MethodType entries. */ | |
| 357 public int getMethodTypeIndexAt(int i) { | |
| 358 if (Assert.ASSERTS_ENABLED) { | |
| 359 Assert.that(getTagAt(i).isMethodType(), "Corrupted constant pool"); | |
| 360 } | |
| 361 int res = getIntAt(i); | |
| 362 if (DEBUG) { | |
| 363 System.err.println("ConstantPool.getMethodHandleTypeAt(" + i + "): result = " + res); | |
| 364 } | |
| 365 return res; | |
| 366 } | |
| 367 | |
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368 /** Lookup for multi-operand (InvokeDynamic) entries. */ |
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369 public short[] getBootstrapSpecifierAt(int i) { |
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370 if (Assert.ASSERTS_ENABLED) { |
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371 Assert.that(getTagAt(i).isInvokeDynamic(), "Corrupted constant pool"); |
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372 } |
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373 int bsmSpec = extractLowShortFromInt(this.getIntAt(i)); |
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374 TypeArray operands = getOperands(); |
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375 if (operands == null) return null; // safety first |
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376 int basePos = VM.getVM().buildIntFromShorts(operands.getShortAt(bsmSpec * 2 + 0), |
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377 operands.getShortAt(bsmSpec * 2 + 1)); |
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378 int argv = basePos + INDY_ARGV_OFFSET; |
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379 int argc = operands.getShortAt(basePos + INDY_ARGC_OFFSET); |
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380 int endPos = argv + argc; |
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381 short[] values = new short[endPos - basePos]; |
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382 for (int j = 0; j < values.length; j++) { |
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383 values[j] = operands.getShortAt(basePos+j); |
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384 } |
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385 return values; |
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386 } |
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387 |
| 0 | 388 final private static String[] nameForTag = new String[] { |
| 389 }; | |
| 390 | |
| 391 private String nameForTag(int tag) { | |
| 392 switch (tag) { | |
| 393 case JVM_CONSTANT_Utf8: return "JVM_CONSTANT_Utf8"; | |
| 394 case JVM_CONSTANT_Unicode: return "JVM_CONSTANT_Unicode"; | |
| 395 case JVM_CONSTANT_Integer: return "JVM_CONSTANT_Integer"; | |
| 396 case JVM_CONSTANT_Float: return "JVM_CONSTANT_Float"; | |
| 397 case JVM_CONSTANT_Long: return "JVM_CONSTANT_Long"; | |
| 398 case JVM_CONSTANT_Double: return "JVM_CONSTANT_Double"; | |
| 399 case JVM_CONSTANT_Class: return "JVM_CONSTANT_Class"; | |
| 400 case JVM_CONSTANT_String: return "JVM_CONSTANT_String"; | |
| 401 case JVM_CONSTANT_Fieldref: return "JVM_CONSTANT_Fieldref"; | |
| 402 case JVM_CONSTANT_Methodref: return "JVM_CONSTANT_Methodref"; | |
| 403 case JVM_CONSTANT_InterfaceMethodref: return "JVM_CONSTANT_InterfaceMethodref"; | |
| 404 case JVM_CONSTANT_NameAndType: return "JVM_CONSTANT_NameAndType"; | |
| 1602 | 405 case JVM_CONSTANT_MethodHandle: return "JVM_CONSTANT_MethodHandle"; |
| 406 case JVM_CONSTANT_MethodType: return "JVM_CONSTANT_MethodType"; | |
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407 case JVM_CONSTANT_InvokeDynamic: return "JVM_CONSTANT_InvokeDynamic"; |
| 0 | 408 case JVM_CONSTANT_Invalid: return "JVM_CONSTANT_Invalid"; |
| 409 case JVM_CONSTANT_UnresolvedClass: return "JVM_CONSTANT_UnresolvedClass"; | |
| 1385 | 410 case JVM_CONSTANT_UnresolvedClassInError: return "JVM_CONSTANT_UnresolvedClassInError"; |
| 0 | 411 case JVM_CONSTANT_ClassIndex: return "JVM_CONSTANT_ClassIndex"; |
| 412 case JVM_CONSTANT_UnresolvedString: return "JVM_CONSTANT_UnresolvedString"; | |
| 413 case JVM_CONSTANT_StringIndex: return "JVM_CONSTANT_StringIndex"; | |
| 414 } | |
| 1385 | 415 throw new InternalError("Unknown tag: " + tag); |
| 0 | 416 } |
| 417 | |
| 418 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
| 419 super.iterateFields(visitor, doVMFields); | |
| 420 if (doVMFields) { | |
| 421 visitor.doOop(tags, true); | |
| 422 visitor.doOop(cache, true); | |
| 423 visitor.doOop(poolHolder, true); | |
| 424 | |
| 425 final int length = (int) getLength(); | |
| 426 // zero'th pool entry is always invalid. ignore it. | |
| 427 for (int index = 1; index < length; index++) { | |
| 428 int ctag = (int) getTags().getByteAt((int) index); | |
| 429 switch (ctag) { | |
| 430 case JVM_CONSTANT_ClassIndex: | |
| 431 case JVM_CONSTANT_StringIndex: | |
| 432 case JVM_CONSTANT_Integer: | |
| 433 visitor.doInt(new IntField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 434 break; | |
| 435 | |
| 436 case JVM_CONSTANT_Float: | |
| 437 visitor.doFloat(new FloatField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 438 break; | |
| 439 | |
| 440 case JVM_CONSTANT_Long: | |
| 441 visitor.doLong(new LongField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 442 // long entries occupy two slots | |
| 443 index++; | |
| 444 break; | |
| 445 | |
| 446 case JVM_CONSTANT_Double: | |
| 447 visitor.doDouble(new DoubleField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 448 // double entries occupy two slots | |
| 449 index++; | |
| 450 break; | |
| 451 | |
| 1385 | 452 case JVM_CONSTANT_UnresolvedClassInError: |
| 0 | 453 case JVM_CONSTANT_UnresolvedClass: |
| 454 case JVM_CONSTANT_Class: | |
| 455 case JVM_CONSTANT_UnresolvedString: | |
| 456 case JVM_CONSTANT_Utf8: | |
| 457 visitor.doOop(new OopField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 458 break; | |
| 459 | |
| 460 case JVM_CONSTANT_Fieldref: | |
| 461 case JVM_CONSTANT_Methodref: | |
| 462 case JVM_CONSTANT_InterfaceMethodref: | |
| 463 case JVM_CONSTANT_NameAndType: | |
| 1602 | 464 case JVM_CONSTANT_MethodHandle: |
| 465 case JVM_CONSTANT_MethodType: | |
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466 case JVM_CONSTANT_InvokeDynamic: |
| 0 | 467 visitor.doInt(new IntField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); |
| 468 break; | |
| 469 } | |
| 470 } | |
| 471 } | |
| 472 /* | |
| 473 int length = getLength(); | |
| 474 for (int index = 0; index < length; index++) { | |
| 475 long offset = baseOffset + (index + typeDataBase.getOopSize()); | |
| 476 visitor.doOop(new IndexableField(index, offset, false), getObjAt(index)); | |
| 477 } | |
| 478 */ | |
| 479 } | |
| 480 | |
| 481 public void writeBytes(OutputStream os) throws IOException { | |
| 482 // Map between any modified UTF-8 and it's constant pool index. | |
| 483 Map utf8ToIndex = new HashMap(); | |
| 484 DataOutputStream dos = new DataOutputStream(os); | |
| 485 TypeArray tags = getTags(); | |
| 486 int len = (int)getLength(); | |
| 487 int ci = 0; // constant pool index | |
| 488 | |
| 489 // collect all modified UTF-8 Strings from Constant Pool | |
| 490 | |
| 491 for (ci = 1; ci < len; ci++) { | |
| 492 byte cpConstType = tags.getByteAt(ci); | |
| 493 if(cpConstType == JVM_CONSTANT_Utf8) { | |
| 494 Symbol sym = getSymbolAt(ci); | |
| 495 utf8ToIndex.put(sym.asString(), new Short((short) ci)); | |
| 496 } | |
| 497 else if(cpConstType == JVM_CONSTANT_Long || | |
| 498 cpConstType == JVM_CONSTANT_Double) { | |
| 499 ci++; | |
| 500 } | |
| 501 } | |
| 502 | |
| 503 | |
| 504 for(ci = 1; ci < len; ci++) { | |
| 505 int cpConstType = (int)tags.getByteAt(ci); | |
| 506 // write cp_info | |
| 507 // write constant type | |
| 508 switch(cpConstType) { | |
| 509 case JVM_CONSTANT_Utf8: { | |
| 510 dos.writeByte(cpConstType); | |
| 511 Symbol sym = getSymbolAt(ci); | |
| 512 dos.writeShort((short)sym.getLength()); | |
| 513 dos.write(sym.asByteArray()); | |
| 514 if (DEBUG) debugMessage("CP[" + ci + "] = modified UTF-8 " + sym.asString()); | |
| 515 break; | |
| 516 } | |
| 517 | |
| 518 case JVM_CONSTANT_Unicode: | |
| 519 throw new IllegalArgumentException("Unicode constant!"); | |
| 520 | |
| 521 case JVM_CONSTANT_Integer: | |
| 522 dos.writeByte(cpConstType); | |
| 523 dos.writeInt(getIntAt(ci)); | |
| 524 if (DEBUG) debugMessage("CP[" + ci + "] = int " + getIntAt(ci)); | |
| 525 break; | |
| 526 | |
| 527 case JVM_CONSTANT_Float: | |
| 528 dos.writeByte(cpConstType); | |
| 529 dos.writeFloat(getFloatAt(ci)); | |
| 530 if (DEBUG) debugMessage("CP[" + ci + "] = float " + getFloatAt(ci)); | |
| 531 break; | |
| 532 | |
| 533 case JVM_CONSTANT_Long: { | |
| 534 dos.writeByte(cpConstType); | |
| 535 long l = getLongAt(ci); | |
| 536 // long entries occupy two pool entries | |
| 537 ci++; | |
| 538 dos.writeLong(l); | |
| 539 break; | |
| 540 } | |
| 541 | |
| 542 case JVM_CONSTANT_Double: | |
| 543 dos.writeByte(cpConstType); | |
| 544 dos.writeDouble(getDoubleAt(ci)); | |
| 545 // double entries occupy two pool entries | |
| 546 ci++; | |
| 547 break; | |
| 548 | |
| 549 case JVM_CONSTANT_Class: { | |
| 550 dos.writeByte(cpConstType); | |
| 551 // Klass already resolved. ConstantPool constains klassOop. | |
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552 Klass refKls = (Klass) getObjAtRaw(ci); |
| 0 | 553 String klassName = refKls.getName().asString(); |
| 554 Short s = (Short) utf8ToIndex.get(klassName); | |
| 555 dos.writeShort(s.shortValue()); | |
| 556 if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); | |
| 557 break; | |
| 558 } | |
| 559 | |
| 560 // case JVM_CONSTANT_ClassIndex: | |
| 1385 | 561 case JVM_CONSTANT_UnresolvedClassInError: |
| 0 | 562 case JVM_CONSTANT_UnresolvedClass: { |
| 563 dos.writeByte(JVM_CONSTANT_Class); | |
| 564 String klassName = getSymbolAt(ci).asString(); | |
| 565 Short s = (Short) utf8ToIndex.get(klassName); | |
| 566 dos.writeShort(s.shortValue()); | |
| 567 if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); | |
| 568 break; | |
| 569 } | |
| 570 | |
| 571 case JVM_CONSTANT_String: { | |
| 572 dos.writeByte(cpConstType); | |
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573 String str = OopUtilities.stringOopToString(getObjAtRaw(ci)); |
| 0 | 574 Short s = (Short) utf8ToIndex.get(str); |
| 575 dos.writeShort(s.shortValue()); | |
| 576 if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); | |
| 577 break; | |
| 578 } | |
| 579 | |
| 580 // case JVM_CONSTANT_StringIndex: | |
| 581 case JVM_CONSTANT_UnresolvedString: { | |
| 582 dos.writeByte(JVM_CONSTANT_String); | |
| 583 String val = getSymbolAt(ci).asString(); | |
| 584 | |
| 585 Short s = (Short) utf8ToIndex.get(val); | |
| 586 dos.writeShort(s.shortValue()); | |
| 587 if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); | |
| 588 break; | |
| 589 } | |
| 590 | |
| 591 // all external, internal method/field references | |
| 592 case JVM_CONSTANT_Fieldref: | |
| 593 case JVM_CONSTANT_Methodref: | |
| 594 case JVM_CONSTANT_InterfaceMethodref: { | |
| 595 dos.writeByte(cpConstType); | |
| 596 int value = getIntAt(ci); | |
| 597 short klassIndex = (short) extractLowShortFromInt(value); | |
| 598 short nameAndTypeIndex = (short) extractHighShortFromInt(value); | |
| 599 dos.writeShort(klassIndex); | |
| 600 dos.writeShort(nameAndTypeIndex); | |
| 601 if (DEBUG) debugMessage("CP[" + ci + "] = ref klass = " + | |
| 602 klassIndex + ", N&T = " + nameAndTypeIndex); | |
| 603 break; | |
| 604 } | |
| 605 | |
| 606 case JVM_CONSTANT_NameAndType: { | |
| 607 dos.writeByte(cpConstType); | |
| 608 int value = getIntAt(ci); | |
| 609 short nameIndex = (short) extractLowShortFromInt(value); | |
| 610 short signatureIndex = (short) extractHighShortFromInt(value); | |
| 611 dos.writeShort(nameIndex); | |
| 612 dos.writeShort(signatureIndex); | |
| 613 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex | |
| 614 + ", type = " + signatureIndex); | |
| 615 break; | |
| 616 } | |
| 1602 | 617 |
| 618 case JVM_CONSTANT_MethodHandle: { | |
| 619 dos.writeByte(cpConstType); | |
| 620 int value = getIntAt(ci); | |
| 621 short nameIndex = (short) extractLowShortFromInt(value); | |
| 622 short signatureIndex = (short) extractHighShortFromInt(value); | |
| 623 dos.writeShort(nameIndex); | |
| 624 dos.writeShort(signatureIndex); | |
| 625 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex | |
| 626 + ", type = " + signatureIndex); | |
| 627 break; | |
| 628 } | |
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629 |
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630 case JVM_CONSTANT_InvokeDynamic: { |
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631 dos.writeByte(cpConstType); |
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632 int value = getIntAt(ci); |
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633 short bsmIndex = (short) extractLowShortFromInt(value); |
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634 short nameAndTypeIndex = (short) extractHighShortFromInt(value); |
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635 dos.writeShort(bsmIndex); |
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636 dos.writeShort(nameAndTypeIndex); |
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637 if (DEBUG) debugMessage("CP[" + ci + "] = indy BSM = " + bsmIndex |
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638 + ", N&T = " + nameAndTypeIndex); |
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639 break; |
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640 } |
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641 |
| 1385 | 642 default: |
| 643 throw new InternalError("unknown tag: " + cpConstType); | |
| 0 | 644 } // switch |
| 645 } | |
| 646 dos.flush(); | |
| 647 return; | |
| 648 } | |
| 649 | |
| 650 public void printValueOn(PrintStream tty) { | |
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651 Oop holder = poolHolder.getValue(this); |
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652 if (holder instanceof Klass) { |
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653 tty.print("ConstantPool for " + ((Klass)holder).getName().asString()); |
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654 } else { |
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655 tty.print("ConstantPool for partially loaded class"); |
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656 } |
| 0 | 657 } |
| 658 | |
| 659 public long getObjectSize() { | |
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660 return alignObjectSize(headerSize + (getLength() * getElementSize())); |
| 0 | 661 } |
| 662 | |
| 663 //---------------------------------------------------------------------- | |
| 664 // Internals only below this point | |
| 665 // | |
| 666 | |
| 667 private static int extractHighShortFromInt(int val) { | |
| 1602 | 668 // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc. |
| 0 | 669 return (val >> 16) & 0xFFFF; |
| 670 } | |
| 671 | |
| 672 private static int extractLowShortFromInt(int val) { | |
| 1602 | 673 // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc. |
| 0 | 674 return val & 0xFFFF; |
| 675 } | |
| 676 } |