Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/oops/Method.java @ 10105:aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
Summary: Allocate the method's profiling related metadata until they are needed.
Reviewed-by: coleenp, roland
| author | jiangli |
|---|---|
| date | Tue, 09 Apr 2013 17:17:41 -0400 |
| parents | fd74228fd5ca |
| children | cbfe859bd244 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2013, 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 | |
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39 public class Method extends Metadata { |
| 0 | 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 { | |
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49 Type type = db.lookupType("Method"); |
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50 constMethod = type.getAddressField("_constMethod"); |
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51 methodData = type.getAddressField("_method_data"); |
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52 methodCounters = type.getAddressField("_method_counters"); |
| 0 | 53 methodSize = new CIntField(type.getCIntegerField("_method_size"), 0); |
| 54 accessFlags = new CIntField(type.getCIntegerField("_access_flags"), 0); | |
| 55 code = type.getAddressField("_code"); | |
| 56 vtableIndex = new CIntField(type.getCIntegerField("_vtable_index"), 0); | |
| 57 bytecodeOffset = type.getSize(); | |
| 58 | |
| 59 /* | |
| 60 interpreterEntry = type.getAddressField("_interpreter_entry"); | |
| 61 fromCompiledCodeEntryPoint = type.getAddressField("_from_compiled_code_entry_point"); | |
| 62 | |
| 63 */ | |
| 64 objectInitializerName = null; | |
| 65 classInitializerName = null; | |
| 66 } | |
| 67 | |
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68 public Method(Address addr) { |
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69 super(addr); |
| 0 | 70 } |
| 71 | |
| 72 public boolean isMethod() { return true; } | |
| 73 | |
| 74 // Fields | |
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75 private static AddressField constMethod; |
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76 private static AddressField methodData; |
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77 private static AddressField methodCounters; |
| 0 | 78 private static CIntField methodSize; |
| 79 private static CIntField accessFlags; | |
| 80 private static CIntField vtableIndex; | |
| 81 private static long bytecodeOffset; | |
| 82 | |
| 83 private static AddressField code; | |
| 84 | |
| 85 // constant method names - <init>, <clinit> | |
| 86 // Initialized lazily to avoid initialization ordering dependencies between Method and SymbolTable | |
| 87 private static Symbol objectInitializerName; | |
| 88 private static Symbol classInitializerName; | |
| 89 private static Symbol objectInitializerName() { | |
| 90 if (objectInitializerName == null) { | |
| 91 objectInitializerName = VM.getVM().getSymbolTable().probe("<init>"); | |
| 92 } | |
| 93 return objectInitializerName; | |
| 94 } | |
| 95 private static Symbol classInitializerName() { | |
| 96 if (classInitializerName == null) { | |
| 97 classInitializerName = VM.getVM().getSymbolTable().probe("<clinit>"); | |
| 98 } | |
| 99 return classInitializerName; | |
| 100 } | |
| 101 | |
| 102 | |
| 103 /* | |
| 104 private static AddressCField interpreterEntry; | |
| 105 private static AddressCField fromCompiledCodeEntryPoint; | |
| 106 */ | |
| 107 | |
| 108 // Accessors for declared fields | |
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109 public ConstMethod getConstMethod() { |
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110 Address addr = constMethod.getValue(getAddress()); |
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111 return (ConstMethod) VMObjectFactory.newObject(ConstMethod.class, addr); |
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112 } |
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113 public ConstantPool getConstants() { |
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114 return getConstMethod().getConstants(); |
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115 } |
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116 public MethodData getMethodData() { |
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117 Address addr = methodData.getValue(getAddress()); |
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118 return (MethodData) VMObjectFactory.newObject(MethodData.class, addr); |
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119 } |
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120 public MethodCounters getMethodCounters() { |
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121 Address addr = methodCounters.getValue(getAddress()); |
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122 return (MethodCounters) VMObjectFactory.newObject(MethodCounters.class, addr); |
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123 } |
| 0 | 124 /** WARNING: this is in words, not useful in this system; use getObjectSize() instead */ |
| 125 public long getMethodSize() { return methodSize.getValue(this); } | |
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126 public long getMaxStack() { return getConstMethod().getMaxStack(); } |
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127 public long getMaxLocals() { return getConstMethod().getMaxLocals(); } |
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128 public long getSizeOfParameters() { return getConstMethod().getSizeOfParameters(); } |
| 0 | 129 public long getNameIndex() { return getConstMethod().getNameIndex(); } |
| 130 public long getSignatureIndex() { return getConstMethod().getSignatureIndex(); } | |
| 131 public long getGenericSignatureIndex() { return getConstMethod().getGenericSignatureIndex(); } | |
| 132 public long getAccessFlags() { return accessFlags.getValue(this); } | |
| 133 public long getCodeSize() { return getConstMethod().getCodeSize(); } | |
| 134 public long getVtableIndex() { return vtableIndex.getValue(this); } | |
| 135 public long getInvocationCounter() { | |
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136 return getMethodCounters().getInvocationCounter(); |
| 0 | 137 } |
| 3939 | 138 public long getBackedgeCounter() { |
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139 return getMethodCounters().getBackedgeCounter(); |
| 3939 | 140 } |
| 0 | 141 |
| 142 // get associated compiled native method, if available, else return null. | |
| 143 public NMethod getNativeMethod() { | |
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144 Address addr = code.getValue(getAddress()); |
| 0 | 145 return (NMethod) VMObjectFactory.newObject(NMethod.class, addr); |
| 146 } | |
| 147 | |
| 148 // Convenience routine | |
| 149 public AccessFlags getAccessFlagsObj() { | |
| 150 return new AccessFlags(getAccessFlags()); | |
| 151 } | |
| 152 | |
| 153 /** Get a bytecode or breakpoint at the given bci */ | |
| 154 public int getBytecodeOrBPAt(int bci) { | |
| 155 return getConstMethod().getBytecodeOrBPAt(bci); | |
| 156 } | |
| 157 | |
| 158 /** Fetch the original non-breakpoint bytecode at the specified | |
| 159 bci. It is required that there is currently a bytecode at this | |
| 160 bci. */ | |
| 161 public int getOrigBytecodeAt(int bci) { | |
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162 BreakpointInfo bp = getMethodHolder().getBreakpoints(); |
| 0 | 163 for (; bp != null; bp = bp.getNext()) { |
| 164 if (bp.match(this, bci)) { | |
| 165 return bp.getOrigBytecode(); | |
| 166 } | |
| 167 } | |
| 168 System.err.println("Requested bci " + bci); | |
| 169 for (; bp != null; bp = bp.getNext()) { | |
| 170 System.err.println("Breakpoint at bci " + bp.getBCI() + ", bytecode " + | |
| 171 bp.getOrigBytecode()); | |
| 172 } | |
| 173 Assert.that(false, "Should not reach here"); | |
| 174 return -1; // not reached | |
| 175 } | |
| 176 | |
| 177 public byte getBytecodeByteArg(int bci) { | |
| 178 return getConstMethod().getBytecodeByteArg(bci); | |
| 179 } | |
| 180 | |
| 181 /** Fetches a 16-bit big-endian ("Java ordered") value from the | |
| 182 bytecode stream */ | |
| 183 public short getBytecodeShortArg(int bci) { | |
| 184 return getConstMethod().getBytecodeShortArg(bci); | |
| 185 } | |
| 186 | |
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187 /** Fetches a 16-bit native ordered value from the |
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188 bytecode stream */ |
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189 public short getNativeShortArg(int bci) { |
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190 return getConstMethod().getNativeShortArg(bci); |
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191 } |
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192 |
| 0 | 193 /** Fetches a 32-bit big-endian ("Java ordered") value from the |
| 194 bytecode stream */ | |
| 195 public int getBytecodeIntArg(int bci) { | |
| 196 return getConstMethod().getBytecodeIntArg(bci); | |
| 197 } | |
| 198 | |
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199 /** Fetches a 32-bit native ordered value from the |
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200 bytecode stream */ |
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201 public int getNativeIntArg(int bci) { |
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202 return getConstMethod().getNativeIntArg(bci); |
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203 } |
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204 |
| 0 | 205 public byte[] getByteCode() { |
| 206 return getConstMethod().getByteCode(); | |
| 207 } | |
| 208 | |
| 209 /* | |
| 210 public Address getCode() { return codeField.getValue(this); } | |
| 211 public Address getInterpreterEntry() { return interpreterEntryField.getValue(this); } | |
| 212 public Address getFromCompiledCodeEntryPoint() { return fromCompiledCodeEntryPointField.getValue(this); } | |
| 213 */ | |
| 214 // Accessors | |
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215 public Symbol getName() { return getConstants().getSymbolAt(getNameIndex()); } |
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216 public Symbol getSignature() { return getConstants().getSymbolAt(getSignatureIndex()); } |
| 0 | 217 public Symbol getGenericSignature() { |
| 218 long index = getGenericSignatureIndex(); | |
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219 return (index != 0L) ? getConstants().getSymbolAt(index) : null; |
| 0 | 220 } |
| 221 | |
| 222 // Method holder (the Klass holding this method) | |
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223 public InstanceKlass getMethodHolder() { return getConstants().getPoolHolder(); } |
| 0 | 224 |
| 225 // Access flags | |
| 226 public boolean isPublic() { return getAccessFlagsObj().isPublic(); } | |
| 227 public boolean isPrivate() { return getAccessFlagsObj().isPrivate(); } | |
| 228 public boolean isProtected() { return getAccessFlagsObj().isProtected(); } | |
| 229 public boolean isPackagePrivate() { AccessFlags af = getAccessFlagsObj(); | |
| 230 return (!af.isPublic() && !af.isPrivate() && !af.isProtected()); } | |
| 231 public boolean isStatic() { return getAccessFlagsObj().isStatic(); } | |
| 232 public boolean isFinal() { return getAccessFlagsObj().isFinal(); } | |
| 233 public boolean isSynchronized() { return getAccessFlagsObj().isSynchronized(); } | |
| 234 public boolean isBridge() { return getAccessFlagsObj().isBridge(); } | |
| 235 public boolean isVarArgs() { return getAccessFlagsObj().isVarArgs(); } | |
| 236 public boolean isNative() { return getAccessFlagsObj().isNative(); } | |
| 237 public boolean isAbstract() { return getAccessFlagsObj().isAbstract(); } | |
| 238 public boolean isStrict() { return getAccessFlagsObj().isStrict(); } | |
| 239 public boolean isSynthetic() { return getAccessFlagsObj().isSynthetic(); } | |
| 240 | |
| 241 public boolean isConstructor() { | |
| 242 return (!isStatic()) && getName().equals(objectInitializerName()); | |
| 243 } | |
| 244 | |
| 245 public boolean isStaticInitializer() { | |
| 246 return isStatic() && getName().equals(classInitializerName()); | |
| 247 } | |
| 248 | |
| 249 public boolean isObsolete() { | |
| 250 return getAccessFlagsObj().isObsolete(); | |
| 251 } | |
| 252 | |
| 253 public OopMapCacheEntry getMaskFor(int bci) { | |
| 254 OopMapCacheEntry entry = new OopMapCacheEntry(); | |
| 255 entry.fill(this, bci); | |
| 256 return entry; | |
| 257 } | |
| 258 | |
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259 public long getSize() { |
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260 return getMethodSize(); |
| 0 | 261 } |
| 262 | |
| 263 public void printValueOn(PrintStream tty) { | |
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264 tty.print("Method " + getName().asString() + getSignature().asString() + "@" + getAddress()); |
| 0 | 265 } |
| 266 | |
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267 public void iterateFields(MetadataVisitor visitor) { |
| 0 | 268 visitor.doCInt(methodSize, true); |
| 269 visitor.doCInt(accessFlags, true); | |
| 270 } | |
| 271 | |
| 272 public boolean hasLineNumberTable() { | |
| 273 return getConstMethod().hasLineNumberTable(); | |
| 274 } | |
| 275 | |
| 276 public int getLineNumberFromBCI(int bci) { | |
| 277 return getConstMethod().getLineNumberFromBCI(bci); | |
| 278 } | |
| 279 | |
| 280 public LineNumberTableElement[] getLineNumberTable() { | |
| 281 return getConstMethod().getLineNumberTable(); | |
| 282 } | |
| 283 | |
| 284 public boolean hasLocalVariableTable() { | |
| 285 return getConstMethod().hasLocalVariableTable(); | |
| 286 } | |
| 287 | |
| 288 /** Should only be called if table is present */ | |
| 289 public LocalVariableTableElement[] getLocalVariableTable() { | |
| 290 return getConstMethod().getLocalVariableTable(); | |
| 291 } | |
| 292 | |
| 293 public Symbol getLocalVariableName(int bci, int slot) { | |
| 294 if (! hasLocalVariableTable()) { | |
| 295 return null; | |
| 296 } | |
| 297 | |
| 298 LocalVariableTableElement[] locals = getLocalVariableTable(); | |
| 299 for (int l = 0; l < locals.length; l++) { | |
| 300 LocalVariableTableElement local = locals[l]; | |
| 301 if ((bci >= local.getStartBCI()) && | |
| 302 (bci < (local.getStartBCI() + local.getLength())) && | |
| 303 slot == local.getSlot()) { | |
| 304 return getConstants().getSymbolAt(local.getNameCPIndex()); | |
| 305 } | |
| 306 } | |
| 307 | |
| 308 return null; | |
| 309 } | |
| 310 | |
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311 public boolean hasExceptionTable() { |
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312 return getConstMethod().hasExceptionTable(); |
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313 } |
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314 |
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315 public ExceptionTableElement[] getExceptionTable() { |
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316 return getConstMethod().getExceptionTable(); |
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317 } |
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318 |
| 0 | 319 public boolean hasCheckedExceptions() { |
| 320 return getConstMethod().hasCheckedExceptions(); | |
| 321 } | |
| 322 | |
| 323 /** Should only be called if table is present */ | |
| 324 public CheckedExceptionElement[] getCheckedExceptions() { | |
| 325 return getConstMethod().getCheckedExceptions(); | |
| 326 } | |
| 327 | |
| 328 /** Returns name and signature in external form for debugging | |
| 329 purposes */ | |
| 330 public String externalNameAndSignature() { | |
| 331 final StringBuffer buf = new StringBuffer(); | |
| 332 buf.append(getMethodHolder().getName().asString()); | |
| 333 buf.append("."); | |
| 334 buf.append(getName().asString()); | |
| 335 buf.append("("); | |
| 336 new SignatureConverter(getSignature(), buf).iterateParameters(); | |
| 337 buf.append(")"); | |
| 338 return buf.toString().replace('/', '.'); | |
| 339 } | |
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340 |
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341 public void dumpReplayData(PrintStream out) { |
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342 NMethod nm = getNativeMethod(); |
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343 int code_size = 0; |
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344 if (nm != null) { |
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345 code_size = (int)nm.codeEnd().minus(nm.getVerifiedEntryPoint()); |
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346 } |
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347 Klass holder = getMethodHolder(); |
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348 out.println("ciMethod " + |
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349 holder.getName().asString() + " " + |
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350 OopUtilities.escapeString(getName().asString()) + " " + |
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351 getSignature().asString() + " " + |
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352 getInvocationCounter() + " " + |
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353 getBackedgeCounter() + " " + |
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354 interpreterInvocationCount() + " " + |
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355 interpreterThrowoutCount() + " " + |
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356 code_size); |
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357 } |
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358 |
| 3939 | 359 public int interpreterThrowoutCount() { |
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360 return getMethodCounters().interpreterThrowoutCount(); |
| 3939 | 361 } |
| 362 | |
| 363 public int interpreterInvocationCount() { | |
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364 return getMethodCounters().interpreterInvocationCount(); |
| 3939 | 365 } |
| 0 | 366 } |