Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/Method.java @ 8059:49618582fc5b
8004840: Jstack seems to output unnecessary information in 7u9
Reviewed-by: dholmes, coleenp, sspitsyn, rbackman
author | sla |
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date | Thu, 14 Feb 2013 13:08:15 +0100 |
parents | fd74228fd5ca |
children | aeaca88565e6 |
rev | line source |
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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 | |
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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"); |
0 | 52 methodSize = new CIntField(type.getCIntegerField("_method_size"), 0); |
53 accessFlags = new CIntField(type.getCIntegerField("_access_flags"), 0); | |
54 code = type.getAddressField("_code"); | |
55 vtableIndex = new CIntField(type.getCIntegerField("_vtable_index"), 0); | |
56 if (!VM.getVM().isCore()) { | |
57 invocationCounter = new CIntField(type.getCIntegerField("_invocation_counter"), 0); | |
3939 | 58 backedgeCounter = new CIntField(type.getCIntegerField("_backedge_counter"), 0); |
0 | 59 } |
60 bytecodeOffset = type.getSize(); | |
61 | |
3939 | 62 interpreterThrowoutCountField = new CIntField(type.getCIntegerField("_interpreter_throwout_count"), 0); |
63 interpreterInvocationCountField = new CIntField(type.getCIntegerField("_interpreter_invocation_count"), 0); | |
64 | |
0 | 65 /* |
66 interpreterEntry = type.getAddressField("_interpreter_entry"); | |
67 fromCompiledCodeEntryPoint = type.getAddressField("_from_compiled_code_entry_point"); | |
68 | |
69 */ | |
70 objectInitializerName = null; | |
71 classInitializerName = null; | |
72 } | |
73 | |
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74 public Method(Address addr) { |
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75 super(addr); |
0 | 76 } |
77 | |
78 public boolean isMethod() { return true; } | |
79 | |
80 // Fields | |
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81 private static AddressField constMethod; |
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82 private static AddressField methodData; |
0 | 83 private static CIntField methodSize; |
84 private static CIntField accessFlags; | |
85 private static CIntField vtableIndex; | |
86 private static CIntField invocationCounter; | |
3939 | 87 private static CIntField backedgeCounter; |
0 | 88 private static long bytecodeOffset; |
89 | |
90 private static AddressField code; | |
91 | |
3939 | 92 private static CIntField interpreterThrowoutCountField; |
93 private static CIntField interpreterInvocationCountField; | |
94 | |
0 | 95 // constant method names - <init>, <clinit> |
96 // Initialized lazily to avoid initialization ordering dependencies between Method and SymbolTable | |
97 private static Symbol objectInitializerName; | |
98 private static Symbol classInitializerName; | |
99 private static Symbol objectInitializerName() { | |
100 if (objectInitializerName == null) { | |
101 objectInitializerName = VM.getVM().getSymbolTable().probe("<init>"); | |
102 } | |
103 return objectInitializerName; | |
104 } | |
105 private static Symbol classInitializerName() { | |
106 if (classInitializerName == null) { | |
107 classInitializerName = VM.getVM().getSymbolTable().probe("<clinit>"); | |
108 } | |
109 return classInitializerName; | |
110 } | |
111 | |
112 | |
113 /* | |
114 private static AddressCField interpreterEntry; | |
115 private static AddressCField fromCompiledCodeEntryPoint; | |
116 */ | |
117 | |
118 // Accessors for declared fields | |
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119 public ConstMethod getConstMethod() { |
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120 Address addr = constMethod.getValue(getAddress()); |
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121 return (ConstMethod) VMObjectFactory.newObject(ConstMethod.class, addr); |
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122 } |
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123 public ConstantPool getConstants() { |
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124 return getConstMethod().getConstants(); |
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125 } |
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126 public MethodData getMethodData() { |
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127 Address addr = methodData.getValue(getAddress()); |
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128 return (MethodData) VMObjectFactory.newObject(MethodData.class, addr); |
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129 } |
0 | 130 /** WARNING: this is in words, not useful in this system; use getObjectSize() instead */ |
131 public long getMethodSize() { return methodSize.getValue(this); } | |
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132 public long getMaxStack() { return getConstMethod().getMaxStack(); } |
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133 public long getMaxLocals() { return getConstMethod().getMaxLocals(); } |
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134 public long getSizeOfParameters() { return getConstMethod().getSizeOfParameters(); } |
0 | 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() { | |
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156 Address addr = code.getValue(getAddress()); |
0 | 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) { | |
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174 BreakpointInfo bp = getMethodHolder().getBreakpoints(); |
0 | 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) | |
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235 public InstanceKlass getMethodHolder() { return getConstants().getPoolHolder(); } |
0 | 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 | |
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271 public long getSize() { |
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272 return getMethodSize(); |
0 | 273 } |
274 | |
275 public void printValueOn(PrintStream tty) { | |
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276 tty.print("Method " + getName().asString() + getSignature().asString() + "@" + getAddress()); |
0 | 277 } |
278 | |
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279 public void iterateFields(MetadataVisitor visitor) { |
0 | 280 visitor.doCInt(methodSize, true); |
281 visitor.doCInt(accessFlags, true); | |
282 } | |
283 | |
284 public boolean hasLineNumberTable() { | |
285 return getConstMethod().hasLineNumberTable(); | |
286 } | |
287 | |
288 public int getLineNumberFromBCI(int bci) { | |
289 return getConstMethod().getLineNumberFromBCI(bci); | |
290 } | |
291 | |
292 public LineNumberTableElement[] getLineNumberTable() { | |
293 return getConstMethod().getLineNumberTable(); | |
294 } | |
295 | |
296 public boolean hasLocalVariableTable() { | |
297 return getConstMethod().hasLocalVariableTable(); | |
298 } | |
299 | |
300 /** Should only be called if table is present */ | |
301 public LocalVariableTableElement[] getLocalVariableTable() { | |
302 return getConstMethod().getLocalVariableTable(); | |
303 } | |
304 | |
305 public Symbol getLocalVariableName(int bci, int slot) { | |
306 if (! hasLocalVariableTable()) { | |
307 return null; | |
308 } | |
309 | |
310 LocalVariableTableElement[] locals = getLocalVariableTable(); | |
311 for (int l = 0; l < locals.length; l++) { | |
312 LocalVariableTableElement local = locals[l]; | |
313 if ((bci >= local.getStartBCI()) && | |
314 (bci < (local.getStartBCI() + local.getLength())) && | |
315 slot == local.getSlot()) { | |
316 return getConstants().getSymbolAt(local.getNameCPIndex()); | |
317 } | |
318 } | |
319 | |
320 return null; | |
321 } | |
322 | |
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323 public boolean hasExceptionTable() { |
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324 return getConstMethod().hasExceptionTable(); |
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325 } |
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326 |
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327 public ExceptionTableElement[] getExceptionTable() { |
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328 return getConstMethod().getExceptionTable(); |
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329 } |
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330 |
0 | 331 public boolean hasCheckedExceptions() { |
332 return getConstMethod().hasCheckedExceptions(); | |
333 } | |
334 | |
335 /** Should only be called if table is present */ | |
336 public CheckedExceptionElement[] getCheckedExceptions() { | |
337 return getConstMethod().getCheckedExceptions(); | |
338 } | |
339 | |
340 /** Returns name and signature in external form for debugging | |
341 purposes */ | |
342 public String externalNameAndSignature() { | |
343 final StringBuffer buf = new StringBuffer(); | |
344 buf.append(getMethodHolder().getName().asString()); | |
345 buf.append("."); | |
346 buf.append(getName().asString()); | |
347 buf.append("("); | |
348 new SignatureConverter(getSignature(), buf).iterateParameters(); | |
349 buf.append(")"); | |
350 return buf.toString().replace('/', '.'); | |
351 } | |
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352 |
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353 public void dumpReplayData(PrintStream out) { |
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354 NMethod nm = getNativeMethod(); |
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355 int code_size = 0; |
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356 if (nm != null) { |
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357 code_size = (int)nm.codeEnd().minus(nm.getVerifiedEntryPoint()); |
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358 } |
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359 Klass holder = getMethodHolder(); |
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360 out.println("ciMethod " + |
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361 holder.getName().asString() + " " + |
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362 OopUtilities.escapeString(getName().asString()) + " " + |
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363 getSignature().asString() + " " + |
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364 getInvocationCounter() + " " + |
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365 getBackedgeCounter() + " " + |
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366 interpreterInvocationCount() + " " + |
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367 interpreterThrowoutCount() + " " + |
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368 code_size); |
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369 } |
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370 |
3939 | 371 public int interpreterThrowoutCount() { |
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372 return (int) interpreterThrowoutCountField.getValue(this); |
3939 | 373 } |
374 | |
375 public int interpreterInvocationCount() { | |
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376 return (int) interpreterInvocationCountField.getValue(this); |
3939 | 377 } |
0 | 378 } |