Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/oops/Method.java @ 6213:8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
Summary: Change constMethodOop::_exception_table to optionally inlined u2 table.
Reviewed-by: bdelsart, coleenp, kamg
| author | jiangli |
|---|---|
| date | Tue, 26 Jun 2012 19:08:44 -0400 |
| parents | 2fe087c3e814 |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2012, 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.code.*; | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 import sun.jvm.hotspot.interpreter.*; | |
| 32 import sun.jvm.hotspot.memory.*; | |
| 33 import sun.jvm.hotspot.runtime.*; | |
| 34 import sun.jvm.hotspot.types.*; | |
| 35 import sun.jvm.hotspot.utilities.*; | |
| 36 | |
| 37 // A Method represents a Java method | |
| 38 | |
| 39 public class Method extends Oop { | |
| 40 static { | |
| 41 VM.registerVMInitializedObserver(new Observer() { | |
| 42 public void update(Observable o, Object data) { | |
| 43 initialize(VM.getVM().getTypeDataBase()); | |
| 44 } | |
| 45 }); | |
| 46 } | |
| 47 | |
| 48 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
| 49 Type type = db.lookupType("methodOopDesc"); | |
| 50 constMethod = new OopField(type.getOopField("_constMethod"), 0); | |
| 3939 | 51 methodData = new OopField(type.getOopField("_method_data"), 0); |
| 0 | 52 methodSize = new CIntField(type.getCIntegerField("_method_size"), 0); |
| 53 maxStack = new CIntField(type.getCIntegerField("_max_stack"), 0); | |
| 54 maxLocals = new CIntField(type.getCIntegerField("_max_locals"), 0); | |
| 55 sizeOfParameters = new CIntField(type.getCIntegerField("_size_of_parameters"), 0); | |
| 56 accessFlags = new CIntField(type.getCIntegerField("_access_flags"), 0); | |
| 57 code = type.getAddressField("_code"); | |
| 58 vtableIndex = new CIntField(type.getCIntegerField("_vtable_index"), 0); | |
| 59 if (!VM.getVM().isCore()) { | |
| 60 invocationCounter = new CIntField(type.getCIntegerField("_invocation_counter"), 0); | |
| 3939 | 61 backedgeCounter = new CIntField(type.getCIntegerField("_backedge_counter"), 0); |
| 0 | 62 } |
| 63 bytecodeOffset = type.getSize(); | |
| 64 | |
| 3939 | 65 interpreterThrowoutCountField = new CIntField(type.getCIntegerField("_interpreter_throwout_count"), 0); |
| 66 interpreterInvocationCountField = new CIntField(type.getCIntegerField("_interpreter_invocation_count"), 0); | |
| 67 | |
| 0 | 68 /* |
| 69 interpreterEntry = type.getAddressField("_interpreter_entry"); | |
| 70 fromCompiledCodeEntryPoint = type.getAddressField("_from_compiled_code_entry_point"); | |
| 71 | |
| 72 */ | |
| 73 objectInitializerName = null; | |
| 74 classInitializerName = null; | |
| 75 } | |
| 76 | |
| 77 Method(OopHandle handle, ObjectHeap heap) { | |
| 78 super(handle, heap); | |
| 79 } | |
| 80 | |
| 81 public boolean isMethod() { return true; } | |
| 82 | |
| 83 // Fields | |
| 84 private static OopField constMethod; | |
| 3939 | 85 private static OopField methodData; |
| 0 | 86 private static CIntField methodSize; |
| 87 private static CIntField maxStack; | |
| 88 private static CIntField maxLocals; | |
| 89 private static CIntField sizeOfParameters; | |
| 90 private static CIntField accessFlags; | |
| 91 private static CIntField vtableIndex; | |
| 92 private static CIntField invocationCounter; | |
| 3939 | 93 private static CIntField backedgeCounter; |
| 0 | 94 private static long bytecodeOffset; |
| 95 | |
| 96 private static AddressField code; | |
| 97 | |
| 3939 | 98 private static CIntField interpreterThrowoutCountField; |
| 99 private static CIntField interpreterInvocationCountField; | |
| 100 | |
| 0 | 101 // constant method names - <init>, <clinit> |
| 102 // Initialized lazily to avoid initialization ordering dependencies between Method and SymbolTable | |
| 103 private static Symbol objectInitializerName; | |
| 104 private static Symbol classInitializerName; | |
| 105 private static Symbol objectInitializerName() { | |
| 106 if (objectInitializerName == null) { | |
| 107 objectInitializerName = VM.getVM().getSymbolTable().probe("<init>"); | |
| 108 } | |
| 109 return objectInitializerName; | |
| 110 } | |
| 111 private static Symbol classInitializerName() { | |
| 112 if (classInitializerName == null) { | |
| 113 classInitializerName = VM.getVM().getSymbolTable().probe("<clinit>"); | |
| 114 } | |
| 115 return classInitializerName; | |
| 116 } | |
| 117 | |
| 118 | |
| 119 /* | |
| 120 private static AddressCField interpreterEntry; | |
| 121 private static AddressCField fromCompiledCodeEntryPoint; | |
| 122 */ | |
| 123 | |
| 124 // Accessors for declared fields | |
| 125 public ConstMethod getConstMethod() { return (ConstMethod) constMethod.getValue(this); } | |
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126 public ConstantPool getConstants() { |
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127 return getConstMethod().getConstants(); |
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128 } |
| 3939 | 129 public MethodData getMethodData() { return (MethodData) methodData.getValue(this); } |
| 0 | 130 /** WARNING: this is in words, not useful in this system; use getObjectSize() instead */ |
| 131 public long getMethodSize() { return methodSize.getValue(this); } | |
| 132 public long getMaxStack() { return maxStack.getValue(this); } | |
| 133 public long getMaxLocals() { return maxLocals.getValue(this); } | |
| 134 public long getSizeOfParameters() { return sizeOfParameters.getValue(this); } | |
| 135 public long getNameIndex() { return getConstMethod().getNameIndex(); } | |
| 136 public long getSignatureIndex() { return getConstMethod().getSignatureIndex(); } | |
| 137 public long getGenericSignatureIndex() { return getConstMethod().getGenericSignatureIndex(); } | |
| 138 public long getAccessFlags() { return accessFlags.getValue(this); } | |
| 139 public long getCodeSize() { return getConstMethod().getCodeSize(); } | |
| 140 public long getVtableIndex() { return vtableIndex.getValue(this); } | |
| 141 public long getInvocationCounter() { | |
| 142 if (Assert.ASSERTS_ENABLED) { | |
| 143 Assert.that(!VM.getVM().isCore(), "must not be used in core build"); | |
| 144 } | |
| 145 return invocationCounter.getValue(this); | |
| 146 } | |
| 3939 | 147 public long getBackedgeCounter() { |
| 148 if (Assert.ASSERTS_ENABLED) { | |
| 149 Assert.that(!VM.getVM().isCore(), "must not be used in core build"); | |
| 150 } | |
| 151 return backedgeCounter.getValue(this); | |
| 152 } | |
| 0 | 153 |
| 154 // get associated compiled native method, if available, else return null. | |
| 155 public NMethod getNativeMethod() { | |
| 156 Address addr = code.getValue(getHandle()); | |
| 157 return (NMethod) VMObjectFactory.newObject(NMethod.class, addr); | |
| 158 } | |
| 159 | |
| 160 // Convenience routine | |
| 161 public AccessFlags getAccessFlagsObj() { | |
| 162 return new AccessFlags(getAccessFlags()); | |
| 163 } | |
| 164 | |
| 165 /** Get a bytecode or breakpoint at the given bci */ | |
| 166 public int getBytecodeOrBPAt(int bci) { | |
| 167 return getConstMethod().getBytecodeOrBPAt(bci); | |
| 168 } | |
| 169 | |
| 170 /** Fetch the original non-breakpoint bytecode at the specified | |
| 171 bci. It is required that there is currently a bytecode at this | |
| 172 bci. */ | |
| 173 public int getOrigBytecodeAt(int bci) { | |
| 174 BreakpointInfo bp = ((InstanceKlass) getMethodHolder()).getBreakpoints(); | |
| 175 for (; bp != null; bp = bp.getNext()) { | |
| 176 if (bp.match(this, bci)) { | |
| 177 return bp.getOrigBytecode(); | |
| 178 } | |
| 179 } | |
| 180 System.err.println("Requested bci " + bci); | |
| 181 for (; bp != null; bp = bp.getNext()) { | |
| 182 System.err.println("Breakpoint at bci " + bp.getBCI() + ", bytecode " + | |
| 183 bp.getOrigBytecode()); | |
| 184 } | |
| 185 Assert.that(false, "Should not reach here"); | |
| 186 return -1; // not reached | |
| 187 } | |
| 188 | |
| 189 public byte getBytecodeByteArg(int bci) { | |
| 190 return getConstMethod().getBytecodeByteArg(bci); | |
| 191 } | |
| 192 | |
| 193 /** Fetches a 16-bit big-endian ("Java ordered") value from the | |
| 194 bytecode stream */ | |
| 195 public short getBytecodeShortArg(int bci) { | |
| 196 return getConstMethod().getBytecodeShortArg(bci); | |
| 197 } | |
| 198 | |
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199 /** Fetches a 16-bit native ordered value from the |
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200 bytecode stream */ |
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201 public short getNativeShortArg(int bci) { |
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202 return getConstMethod().getNativeShortArg(bci); |
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203 } |
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204 |
| 0 | 205 /** Fetches a 32-bit big-endian ("Java ordered") value from the |
| 206 bytecode stream */ | |
| 207 public int getBytecodeIntArg(int bci) { | |
| 208 return getConstMethod().getBytecodeIntArg(bci); | |
| 209 } | |
| 210 | |
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211 /** Fetches a 32-bit native ordered value from the |
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212 bytecode stream */ |
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213 public int getNativeIntArg(int bci) { |
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214 return getConstMethod().getNativeIntArg(bci); |
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215 } |
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216 |
| 0 | 217 public byte[] getByteCode() { |
| 218 return getConstMethod().getByteCode(); | |
| 219 } | |
| 220 | |
| 221 /* | |
| 222 public Address getCode() { return codeField.getValue(this); } | |
| 223 public Address getInterpreterEntry() { return interpreterEntryField.getValue(this); } | |
| 224 public Address getFromCompiledCodeEntryPoint() { return fromCompiledCodeEntryPointField.getValue(this); } | |
| 225 */ | |
| 226 // Accessors | |
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227 public Symbol getName() { return getConstants().getSymbolAt(getNameIndex()); } |
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228 public Symbol getSignature() { return getConstants().getSymbolAt(getSignatureIndex()); } |
| 0 | 229 public Symbol getGenericSignature() { |
| 230 long index = getGenericSignatureIndex(); | |
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231 return (index != 0L) ? getConstants().getSymbolAt(index) : null; |
| 0 | 232 } |
| 233 | |
| 234 // Method holder (the Klass holding this method) | |
| 235 public Klass getMethodHolder() { return getConstants().getPoolHolder(); } | |
| 236 | |
| 237 // Access flags | |
| 238 public boolean isPublic() { return getAccessFlagsObj().isPublic(); } | |
| 239 public boolean isPrivate() { return getAccessFlagsObj().isPrivate(); } | |
| 240 public boolean isProtected() { return getAccessFlagsObj().isProtected(); } | |
| 241 public boolean isPackagePrivate() { AccessFlags af = getAccessFlagsObj(); | |
| 242 return (!af.isPublic() && !af.isPrivate() && !af.isProtected()); } | |
| 243 public boolean isStatic() { return getAccessFlagsObj().isStatic(); } | |
| 244 public boolean isFinal() { return getAccessFlagsObj().isFinal(); } | |
| 245 public boolean isSynchronized() { return getAccessFlagsObj().isSynchronized(); } | |
| 246 public boolean isBridge() { return getAccessFlagsObj().isBridge(); } | |
| 247 public boolean isVarArgs() { return getAccessFlagsObj().isVarArgs(); } | |
| 248 public boolean isNative() { return getAccessFlagsObj().isNative(); } | |
| 249 public boolean isAbstract() { return getAccessFlagsObj().isAbstract(); } | |
| 250 public boolean isStrict() { return getAccessFlagsObj().isStrict(); } | |
| 251 public boolean isSynthetic() { return getAccessFlagsObj().isSynthetic(); } | |
| 252 | |
| 253 public boolean isConstructor() { | |
| 254 return (!isStatic()) && getName().equals(objectInitializerName()); | |
| 255 } | |
| 256 | |
| 257 public boolean isStaticInitializer() { | |
| 258 return isStatic() && getName().equals(classInitializerName()); | |
| 259 } | |
| 260 | |
| 261 public boolean isObsolete() { | |
| 262 return getAccessFlagsObj().isObsolete(); | |
| 263 } | |
| 264 | |
| 265 public OopMapCacheEntry getMaskFor(int bci) { | |
| 266 OopMapCacheEntry entry = new OopMapCacheEntry(); | |
| 267 entry.fill(this, bci); | |
| 268 return entry; | |
| 269 } | |
| 270 | |
| 271 public long getObjectSize() { | |
| 272 return getMethodSize() * getHeap().getOopSize(); | |
| 273 } | |
| 274 | |
| 275 public void printValueOn(PrintStream tty) { | |
| 276 tty.print("Method " + getName().asString() + getSignature().asString() + "@" + getHandle()); | |
| 277 } | |
| 278 | |
| 279 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
| 280 super.iterateFields(visitor, doVMFields); | |
| 281 if (doVMFields) { | |
| 282 visitor.doOop(constMethod, true); | |
| 283 visitor.doCInt(methodSize, true); | |
| 284 visitor.doCInt(maxStack, true); | |
| 285 visitor.doCInt(maxLocals, true); | |
| 286 visitor.doCInt(sizeOfParameters, true); | |
| 287 visitor.doCInt(accessFlags, true); | |
| 288 } | |
| 289 } | |
| 290 | |
| 291 public boolean hasLineNumberTable() { | |
| 292 return getConstMethod().hasLineNumberTable(); | |
| 293 } | |
| 294 | |
| 295 public int getLineNumberFromBCI(int bci) { | |
| 296 return getConstMethod().getLineNumberFromBCI(bci); | |
| 297 } | |
| 298 | |
| 299 public LineNumberTableElement[] getLineNumberTable() { | |
| 300 return getConstMethod().getLineNumberTable(); | |
| 301 } | |
| 302 | |
| 303 public boolean hasLocalVariableTable() { | |
| 304 return getConstMethod().hasLocalVariableTable(); | |
| 305 } | |
| 306 | |
| 307 /** Should only be called if table is present */ | |
| 308 public LocalVariableTableElement[] getLocalVariableTable() { | |
| 309 return getConstMethod().getLocalVariableTable(); | |
| 310 } | |
| 311 | |
| 312 public Symbol getLocalVariableName(int bci, int slot) { | |
| 313 if (! hasLocalVariableTable()) { | |
| 314 return null; | |
| 315 } | |
| 316 | |
| 317 LocalVariableTableElement[] locals = getLocalVariableTable(); | |
| 318 for (int l = 0; l < locals.length; l++) { | |
| 319 LocalVariableTableElement local = locals[l]; | |
| 320 if ((bci >= local.getStartBCI()) && | |
| 321 (bci < (local.getStartBCI() + local.getLength())) && | |
| 322 slot == local.getSlot()) { | |
| 323 return getConstants().getSymbolAt(local.getNameCPIndex()); | |
| 324 } | |
| 325 } | |
| 326 | |
| 327 return null; | |
| 328 } | |
| 329 | |
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330 public boolean hasExceptionTable() { |
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331 return getConstMethod().hasExceptionTable(); |
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332 } |
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333 |
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334 public ExceptionTableElement[] getExceptionTable() { |
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335 return getConstMethod().getExceptionTable(); |
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336 } |
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337 |
| 0 | 338 public boolean hasCheckedExceptions() { |
| 339 return getConstMethod().hasCheckedExceptions(); | |
| 340 } | |
| 341 | |
| 342 /** Should only be called if table is present */ | |
| 343 public CheckedExceptionElement[] getCheckedExceptions() { | |
| 344 return getConstMethod().getCheckedExceptions(); | |
| 345 } | |
| 346 | |
| 347 /** Returns name and signature in external form for debugging | |
| 348 purposes */ | |
| 349 public String externalNameAndSignature() { | |
| 350 final StringBuffer buf = new StringBuffer(); | |
| 351 buf.append(getMethodHolder().getName().asString()); | |
| 352 buf.append("."); | |
| 353 buf.append(getName().asString()); | |
| 354 buf.append("("); | |
| 355 new SignatureConverter(getSignature(), buf).iterateParameters(); | |
| 356 buf.append(")"); | |
| 357 return buf.toString().replace('/', '.'); | |
| 358 } | |
| 3939 | 359 public int interpreterThrowoutCount() { |
| 360 return (int) interpreterThrowoutCountField.getValue(getHandle()); | |
| 361 } | |
| 362 | |
| 363 public int interpreterInvocationCount() { | |
| 364 return (int) interpreterInvocationCountField.getValue(getHandle()); | |
| 365 } | |
| 0 | 366 } |