Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/Method.java @ 3945:8ed53447f690
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author | iveresov |
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date | Thu, 15 Sep 2011 12:44:09 -0700 |
parents | f6f3bb0ee072 |
children | 2fe087c3e814 |
rev | line source |
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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.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); | |
51 constants = new OopField(type.getOopField("_constants"), 0); | |
3939 | 52 methodData = new OopField(type.getOopField("_method_data"), 0); |
0 | 53 methodSize = new CIntField(type.getCIntegerField("_method_size"), 0); |
54 maxStack = new CIntField(type.getCIntegerField("_max_stack"), 0); | |
55 maxLocals = new CIntField(type.getCIntegerField("_max_locals"), 0); | |
56 sizeOfParameters = new CIntField(type.getCIntegerField("_size_of_parameters"), 0); | |
57 accessFlags = new CIntField(type.getCIntegerField("_access_flags"), 0); | |
58 code = type.getAddressField("_code"); | |
59 vtableIndex = new CIntField(type.getCIntegerField("_vtable_index"), 0); | |
60 if (!VM.getVM().isCore()) { | |
61 invocationCounter = new CIntField(type.getCIntegerField("_invocation_counter"), 0); | |
3939 | 62 backedgeCounter = new CIntField(type.getCIntegerField("_backedge_counter"), 0); |
0 | 63 } |
64 bytecodeOffset = type.getSize(); | |
65 | |
3939 | 66 interpreterThrowoutCountField = new CIntField(type.getCIntegerField("_interpreter_throwout_count"), 0); |
67 interpreterInvocationCountField = new CIntField(type.getCIntegerField("_interpreter_invocation_count"), 0); | |
68 | |
0 | 69 /* |
70 interpreterEntry = type.getAddressField("_interpreter_entry"); | |
71 fromCompiledCodeEntryPoint = type.getAddressField("_from_compiled_code_entry_point"); | |
72 | |
73 */ | |
74 objectInitializerName = null; | |
75 classInitializerName = null; | |
76 } | |
77 | |
78 Method(OopHandle handle, ObjectHeap heap) { | |
79 super(handle, heap); | |
80 } | |
81 | |
82 public boolean isMethod() { return true; } | |
83 | |
84 // Fields | |
85 private static OopField constMethod; | |
86 private static OopField constants; | |
3939 | 87 private static OopField methodData; |
0 | 88 private static CIntField methodSize; |
89 private static CIntField maxStack; | |
90 private static CIntField maxLocals; | |
91 private static CIntField sizeOfParameters; | |
92 private static CIntField accessFlags; | |
93 private static CIntField vtableIndex; | |
94 private static CIntField invocationCounter; | |
3939 | 95 private static CIntField backedgeCounter; |
0 | 96 private static long bytecodeOffset; |
97 | |
98 private static AddressField code; | |
99 | |
3939 | 100 private static CIntField interpreterThrowoutCountField; |
101 private static CIntField interpreterInvocationCountField; | |
102 | |
0 | 103 // constant method names - <init>, <clinit> |
104 // Initialized lazily to avoid initialization ordering dependencies between Method and SymbolTable | |
105 private static Symbol objectInitializerName; | |
106 private static Symbol classInitializerName; | |
107 private static Symbol objectInitializerName() { | |
108 if (objectInitializerName == null) { | |
109 objectInitializerName = VM.getVM().getSymbolTable().probe("<init>"); | |
110 } | |
111 return objectInitializerName; | |
112 } | |
113 private static Symbol classInitializerName() { | |
114 if (classInitializerName == null) { | |
115 classInitializerName = VM.getVM().getSymbolTable().probe("<clinit>"); | |
116 } | |
117 return classInitializerName; | |
118 } | |
119 | |
120 | |
121 /* | |
122 private static AddressCField interpreterEntry; | |
123 private static AddressCField fromCompiledCodeEntryPoint; | |
124 */ | |
125 | |
126 // Accessors for declared fields | |
127 public ConstMethod getConstMethod() { return (ConstMethod) constMethod.getValue(this); } | |
128 public ConstantPool getConstants() { return (ConstantPool) constants.getValue(this); } | |
3939 | 129 public MethodData getMethodData() { return (MethodData) methodData.getValue(this); } |
0 | 130 public TypeArray getExceptionTable() { return getConstMethod().getExceptionTable(); } |
131 /** WARNING: this is in words, not useful in this system; use getObjectSize() instead */ | |
132 public long getMethodSize() { return methodSize.getValue(this); } | |
133 public long getMaxStack() { return maxStack.getValue(this); } | |
134 public long getMaxLocals() { return maxLocals.getValue(this); } | |
135 public long getSizeOfParameters() { return sizeOfParameters.getValue(this); } | |
136 public long getNameIndex() { return getConstMethod().getNameIndex(); } | |
137 public long getSignatureIndex() { return getConstMethod().getSignatureIndex(); } | |
138 public long getGenericSignatureIndex() { return getConstMethod().getGenericSignatureIndex(); } | |
139 public long getAccessFlags() { return accessFlags.getValue(this); } | |
140 public long getCodeSize() { return getConstMethod().getCodeSize(); } | |
141 public long getVtableIndex() { return vtableIndex.getValue(this); } | |
142 public long getInvocationCounter() { | |
143 if (Assert.ASSERTS_ENABLED) { | |
144 Assert.that(!VM.getVM().isCore(), "must not be used in core build"); | |
145 } | |
146 return invocationCounter.getValue(this); | |
147 } | |
3939 | 148 public long getBackedgeCounter() { |
149 if (Assert.ASSERTS_ENABLED) { | |
150 Assert.that(!VM.getVM().isCore(), "must not be used in core build"); | |
151 } | |
152 return backedgeCounter.getValue(this); | |
153 } | |
0 | 154 |
155 // get associated compiled native method, if available, else return null. | |
156 public NMethod getNativeMethod() { | |
157 Address addr = code.getValue(getHandle()); | |
158 return (NMethod) VMObjectFactory.newObject(NMethod.class, addr); | |
159 } | |
160 | |
161 // Convenience routine | |
162 public AccessFlags getAccessFlagsObj() { | |
163 return new AccessFlags(getAccessFlags()); | |
164 } | |
165 | |
166 /** Get a bytecode or breakpoint at the given bci */ | |
167 public int getBytecodeOrBPAt(int bci) { | |
168 return getConstMethod().getBytecodeOrBPAt(bci); | |
169 } | |
170 | |
171 /** Fetch the original non-breakpoint bytecode at the specified | |
172 bci. It is required that there is currently a bytecode at this | |
173 bci. */ | |
174 public int getOrigBytecodeAt(int bci) { | |
175 BreakpointInfo bp = ((InstanceKlass) getMethodHolder()).getBreakpoints(); | |
176 for (; bp != null; bp = bp.getNext()) { | |
177 if (bp.match(this, bci)) { | |
178 return bp.getOrigBytecode(); | |
179 } | |
180 } | |
181 System.err.println("Requested bci " + bci); | |
182 for (; bp != null; bp = bp.getNext()) { | |
183 System.err.println("Breakpoint at bci " + bp.getBCI() + ", bytecode " + | |
184 bp.getOrigBytecode()); | |
185 } | |
186 Assert.that(false, "Should not reach here"); | |
187 return -1; // not reached | |
188 } | |
189 | |
190 public byte getBytecodeByteArg(int bci) { | |
191 return getConstMethod().getBytecodeByteArg(bci); | |
192 } | |
193 | |
194 /** Fetches a 16-bit big-endian ("Java ordered") value from the | |
195 bytecode stream */ | |
196 public short getBytecodeShortArg(int bci) { | |
197 return getConstMethod().getBytecodeShortArg(bci); | |
198 } | |
199 | |
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200 /** Fetches a 16-bit native ordered value from the |
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201 bytecode stream */ |
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202 public short getNativeShortArg(int bci) { |
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203 return getConstMethod().getNativeShortArg(bci); |
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204 } |
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205 |
0 | 206 /** Fetches a 32-bit big-endian ("Java ordered") value from the |
207 bytecode stream */ | |
208 public int getBytecodeIntArg(int bci) { | |
209 return getConstMethod().getBytecodeIntArg(bci); | |
210 } | |
211 | |
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212 /** Fetches a 32-bit native ordered value from the |
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213 bytecode stream */ |
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214 public int getNativeIntArg(int bci) { |
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215 return getConstMethod().getNativeIntArg(bci); |
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216 } |
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217 |
0 | 218 public byte[] getByteCode() { |
219 return getConstMethod().getByteCode(); | |
220 } | |
221 | |
222 /* | |
223 public Address getCode() { return codeField.getValue(this); } | |
224 public Address getInterpreterEntry() { return interpreterEntryField.getValue(this); } | |
225 public Address getFromCompiledCodeEntryPoint() { return fromCompiledCodeEntryPointField.getValue(this); } | |
226 */ | |
227 // Accessors | |
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228 public Symbol getName() { return getConstants().getSymbolAt(getNameIndex()); } |
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229 public Symbol getSignature() { return getConstants().getSymbolAt(getSignatureIndex()); } |
0 | 230 public Symbol getGenericSignature() { |
231 long index = getGenericSignatureIndex(); | |
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232 return (index != 0L) ? getConstants().getSymbolAt(index) : null; |
0 | 233 } |
234 | |
235 // Method holder (the Klass holding this method) | |
236 public Klass getMethodHolder() { return getConstants().getPoolHolder(); } | |
237 | |
238 // Access flags | |
239 public boolean isPublic() { return getAccessFlagsObj().isPublic(); } | |
240 public boolean isPrivate() { return getAccessFlagsObj().isPrivate(); } | |
241 public boolean isProtected() { return getAccessFlagsObj().isProtected(); } | |
242 public boolean isPackagePrivate() { AccessFlags af = getAccessFlagsObj(); | |
243 return (!af.isPublic() && !af.isPrivate() && !af.isProtected()); } | |
244 public boolean isStatic() { return getAccessFlagsObj().isStatic(); } | |
245 public boolean isFinal() { return getAccessFlagsObj().isFinal(); } | |
246 public boolean isSynchronized() { return getAccessFlagsObj().isSynchronized(); } | |
247 public boolean isBridge() { return getAccessFlagsObj().isBridge(); } | |
248 public boolean isVarArgs() { return getAccessFlagsObj().isVarArgs(); } | |
249 public boolean isNative() { return getAccessFlagsObj().isNative(); } | |
250 public boolean isAbstract() { return getAccessFlagsObj().isAbstract(); } | |
251 public boolean isStrict() { return getAccessFlagsObj().isStrict(); } | |
252 public boolean isSynthetic() { return getAccessFlagsObj().isSynthetic(); } | |
253 | |
254 public boolean isConstructor() { | |
255 return (!isStatic()) && getName().equals(objectInitializerName()); | |
256 } | |
257 | |
258 public boolean isStaticInitializer() { | |
259 return isStatic() && getName().equals(classInitializerName()); | |
260 } | |
261 | |
262 public boolean isObsolete() { | |
263 return getAccessFlagsObj().isObsolete(); | |
264 } | |
265 | |
266 public OopMapCacheEntry getMaskFor(int bci) { | |
267 OopMapCacheEntry entry = new OopMapCacheEntry(); | |
268 entry.fill(this, bci); | |
269 return entry; | |
270 } | |
271 | |
272 public long getObjectSize() { | |
273 return getMethodSize() * getHeap().getOopSize(); | |
274 } | |
275 | |
276 public void printValueOn(PrintStream tty) { | |
277 tty.print("Method " + getName().asString() + getSignature().asString() + "@" + getHandle()); | |
278 } | |
279 | |
280 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
281 super.iterateFields(visitor, doVMFields); | |
282 if (doVMFields) { | |
283 visitor.doOop(constMethod, true); | |
284 visitor.doOop(constants, true); | |
285 visitor.doCInt(methodSize, true); | |
286 visitor.doCInt(maxStack, true); | |
287 visitor.doCInt(maxLocals, true); | |
288 visitor.doCInt(sizeOfParameters, true); | |
289 visitor.doCInt(accessFlags, true); | |
290 } | |
291 } | |
292 | |
293 public boolean hasLineNumberTable() { | |
294 return getConstMethod().hasLineNumberTable(); | |
295 } | |
296 | |
297 public int getLineNumberFromBCI(int bci) { | |
298 return getConstMethod().getLineNumberFromBCI(bci); | |
299 } | |
300 | |
301 public LineNumberTableElement[] getLineNumberTable() { | |
302 return getConstMethod().getLineNumberTable(); | |
303 } | |
304 | |
305 public boolean hasLocalVariableTable() { | |
306 return getConstMethod().hasLocalVariableTable(); | |
307 } | |
308 | |
309 /** Should only be called if table is present */ | |
310 public LocalVariableTableElement[] getLocalVariableTable() { | |
311 return getConstMethod().getLocalVariableTable(); | |
312 } | |
313 | |
314 public Symbol getLocalVariableName(int bci, int slot) { | |
315 if (! hasLocalVariableTable()) { | |
316 return null; | |
317 } | |
318 | |
319 LocalVariableTableElement[] locals = getLocalVariableTable(); | |
320 for (int l = 0; l < locals.length; l++) { | |
321 LocalVariableTableElement local = locals[l]; | |
322 if ((bci >= local.getStartBCI()) && | |
323 (bci < (local.getStartBCI() + local.getLength())) && | |
324 slot == local.getSlot()) { | |
325 return getConstants().getSymbolAt(local.getNameCPIndex()); | |
326 } | |
327 } | |
328 | |
329 return null; | |
330 } | |
331 | |
332 public boolean hasCheckedExceptions() { | |
333 return getConstMethod().hasCheckedExceptions(); | |
334 } | |
335 | |
336 /** Should only be called if table is present */ | |
337 public CheckedExceptionElement[] getCheckedExceptions() { | |
338 return getConstMethod().getCheckedExceptions(); | |
339 } | |
340 | |
341 /** Returns name and signature in external form for debugging | |
342 purposes */ | |
343 public String externalNameAndSignature() { | |
344 final StringBuffer buf = new StringBuffer(); | |
345 buf.append(getMethodHolder().getName().asString()); | |
346 buf.append("."); | |
347 buf.append(getName().asString()); | |
348 buf.append("("); | |
349 new SignatureConverter(getSignature(), buf).iterateParameters(); | |
350 buf.append(")"); | |
351 return buf.toString().replace('/', '.'); | |
352 } | |
3939 | 353 public int interpreterThrowoutCount() { |
354 return (int) interpreterThrowoutCountField.getValue(getHandle()); | |
355 } | |
356 | |
357 public int interpreterInvocationCount() { | |
358 return (int) interpreterInvocationCountField.getValue(getHandle()); | |
359 } | |
0 | 360 } |