Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/Method.java @ 1913:3b2dea75431e
6984311: JSR 292 needs optional bootstrap method parameters
Summary: Allow CONSTANT_InvokeDynamic nodes to have any number of extra operands.
Reviewed-by: twisti
author | jrose |
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date | Sat, 30 Oct 2010 13:08:23 -0700 |
parents | c18cbe5936b8 |
children | 3582bf76420e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2004, 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 |
c18cbe5936b8
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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); | |
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); | |
61 } | |
62 bytecodeOffset = type.getSize(); | |
63 | |
64 /* | |
65 interpreterEntry = type.getAddressField("_interpreter_entry"); | |
66 fromCompiledCodeEntryPoint = type.getAddressField("_from_compiled_code_entry_point"); | |
67 | |
68 */ | |
69 objectInitializerName = null; | |
70 classInitializerName = null; | |
71 } | |
72 | |
73 Method(OopHandle handle, ObjectHeap heap) { | |
74 super(handle, heap); | |
75 } | |
76 | |
77 public boolean isMethod() { return true; } | |
78 | |
79 // Fields | |
80 private static OopField constMethod; | |
81 private static OopField constants; | |
82 private static CIntField methodSize; | |
83 private static CIntField maxStack; | |
84 private static CIntField maxLocals; | |
85 private static CIntField sizeOfParameters; | |
86 private static CIntField accessFlags; | |
87 private static CIntField vtableIndex; | |
88 private static CIntField invocationCounter; | |
89 private static long bytecodeOffset; | |
90 | |
91 private static AddressField code; | |
92 | |
93 // constant method names - <init>, <clinit> | |
94 // Initialized lazily to avoid initialization ordering dependencies between Method and SymbolTable | |
95 private static Symbol objectInitializerName; | |
96 private static Symbol classInitializerName; | |
97 private static Symbol objectInitializerName() { | |
98 if (objectInitializerName == null) { | |
99 objectInitializerName = VM.getVM().getSymbolTable().probe("<init>"); | |
100 } | |
101 return objectInitializerName; | |
102 } | |
103 private static Symbol classInitializerName() { | |
104 if (classInitializerName == null) { | |
105 classInitializerName = VM.getVM().getSymbolTable().probe("<clinit>"); | |
106 } | |
107 return classInitializerName; | |
108 } | |
109 | |
110 | |
111 /* | |
112 private static AddressCField interpreterEntry; | |
113 private static AddressCField fromCompiledCodeEntryPoint; | |
114 */ | |
115 | |
116 // Accessors for declared fields | |
117 public ConstMethod getConstMethod() { return (ConstMethod) constMethod.getValue(this); } | |
118 public ConstantPool getConstants() { return (ConstantPool) constants.getValue(this); } | |
119 public TypeArray getExceptionTable() { return getConstMethod().getExceptionTable(); } | |
120 /** WARNING: this is in words, not useful in this system; use getObjectSize() instead */ | |
121 public long getMethodSize() { return methodSize.getValue(this); } | |
122 public long getMaxStack() { return maxStack.getValue(this); } | |
123 public long getMaxLocals() { return maxLocals.getValue(this); } | |
124 public long getSizeOfParameters() { return sizeOfParameters.getValue(this); } | |
125 public long getNameIndex() { return getConstMethod().getNameIndex(); } | |
126 public long getSignatureIndex() { return getConstMethod().getSignatureIndex(); } | |
127 public long getGenericSignatureIndex() { return getConstMethod().getGenericSignatureIndex(); } | |
128 public long getAccessFlags() { return accessFlags.getValue(this); } | |
129 public long getCodeSize() { return getConstMethod().getCodeSize(); } | |
130 public long getVtableIndex() { return vtableIndex.getValue(this); } | |
131 public long getInvocationCounter() { | |
132 if (Assert.ASSERTS_ENABLED) { | |
133 Assert.that(!VM.getVM().isCore(), "must not be used in core build"); | |
134 } | |
135 return invocationCounter.getValue(this); | |
136 } | |
137 | |
138 // get associated compiled native method, if available, else return null. | |
139 public NMethod getNativeMethod() { | |
140 Address addr = code.getValue(getHandle()); | |
141 return (NMethod) VMObjectFactory.newObject(NMethod.class, addr); | |
142 } | |
143 | |
144 // Convenience routine | |
145 public AccessFlags getAccessFlagsObj() { | |
146 return new AccessFlags(getAccessFlags()); | |
147 } | |
148 | |
149 /** Get a bytecode or breakpoint at the given bci */ | |
150 public int getBytecodeOrBPAt(int bci) { | |
151 return getConstMethod().getBytecodeOrBPAt(bci); | |
152 } | |
153 | |
154 /** Fetch the original non-breakpoint bytecode at the specified | |
155 bci. It is required that there is currently a bytecode at this | |
156 bci. */ | |
157 public int getOrigBytecodeAt(int bci) { | |
158 BreakpointInfo bp = ((InstanceKlass) getMethodHolder()).getBreakpoints(); | |
159 for (; bp != null; bp = bp.getNext()) { | |
160 if (bp.match(this, bci)) { | |
161 return bp.getOrigBytecode(); | |
162 } | |
163 } | |
164 System.err.println("Requested bci " + bci); | |
165 for (; bp != null; bp = bp.getNext()) { | |
166 System.err.println("Breakpoint at bci " + bp.getBCI() + ", bytecode " + | |
167 bp.getOrigBytecode()); | |
168 } | |
169 Assert.that(false, "Should not reach here"); | |
170 return -1; // not reached | |
171 } | |
172 | |
173 public byte getBytecodeByteArg(int bci) { | |
174 return getConstMethod().getBytecodeByteArg(bci); | |
175 } | |
176 | |
177 /** Fetches a 16-bit big-endian ("Java ordered") value from the | |
178 bytecode stream */ | |
179 public short getBytecodeShortArg(int bci) { | |
180 return getConstMethod().getBytecodeShortArg(bci); | |
181 } | |
182 | |
183 /** Fetches a 32-bit big-endian ("Java ordered") value from the | |
184 bytecode stream */ | |
185 public int getBytecodeIntArg(int bci) { | |
186 return getConstMethod().getBytecodeIntArg(bci); | |
187 } | |
188 | |
189 public byte[] getByteCode() { | |
190 return getConstMethod().getByteCode(); | |
191 } | |
192 | |
193 /* | |
194 public Address getCode() { return codeField.getValue(this); } | |
195 public Address getInterpreterEntry() { return interpreterEntryField.getValue(this); } | |
196 public Address getFromCompiledCodeEntryPoint() { return fromCompiledCodeEntryPointField.getValue(this); } | |
197 */ | |
198 // Accessors | |
199 public Symbol getName() { return (Symbol) getConstants().getObjAt(getNameIndex()); } | |
200 public Symbol getSignature() { return (Symbol) getConstants().getObjAt(getSignatureIndex()); } | |
201 public Symbol getGenericSignature() { | |
202 long index = getGenericSignatureIndex(); | |
203 return (index != 0L) ? (Symbol) getConstants().getObjAt(index) : null; | |
204 } | |
205 | |
206 // Method holder (the Klass holding this method) | |
207 public Klass getMethodHolder() { return getConstants().getPoolHolder(); } | |
208 | |
209 // Access flags | |
210 public boolean isPublic() { return getAccessFlagsObj().isPublic(); } | |
211 public boolean isPrivate() { return getAccessFlagsObj().isPrivate(); } | |
212 public boolean isProtected() { return getAccessFlagsObj().isProtected(); } | |
213 public boolean isPackagePrivate() { AccessFlags af = getAccessFlagsObj(); | |
214 return (!af.isPublic() && !af.isPrivate() && !af.isProtected()); } | |
215 public boolean isStatic() { return getAccessFlagsObj().isStatic(); } | |
216 public boolean isFinal() { return getAccessFlagsObj().isFinal(); } | |
217 public boolean isSynchronized() { return getAccessFlagsObj().isSynchronized(); } | |
218 public boolean isBridge() { return getAccessFlagsObj().isBridge(); } | |
219 public boolean isVarArgs() { return getAccessFlagsObj().isVarArgs(); } | |
220 public boolean isNative() { return getAccessFlagsObj().isNative(); } | |
221 public boolean isAbstract() { return getAccessFlagsObj().isAbstract(); } | |
222 public boolean isStrict() { return getAccessFlagsObj().isStrict(); } | |
223 public boolean isSynthetic() { return getAccessFlagsObj().isSynthetic(); } | |
224 | |
225 public boolean isConstructor() { | |
226 return (!isStatic()) && getName().equals(objectInitializerName()); | |
227 } | |
228 | |
229 public boolean isStaticInitializer() { | |
230 return isStatic() && getName().equals(classInitializerName()); | |
231 } | |
232 | |
233 public boolean isObsolete() { | |
234 return getAccessFlagsObj().isObsolete(); | |
235 } | |
236 | |
237 public OopMapCacheEntry getMaskFor(int bci) { | |
238 OopMapCacheEntry entry = new OopMapCacheEntry(); | |
239 entry.fill(this, bci); | |
240 return entry; | |
241 } | |
242 | |
243 public long getObjectSize() { | |
244 return getMethodSize() * getHeap().getOopSize(); | |
245 } | |
246 | |
247 public void printValueOn(PrintStream tty) { | |
248 tty.print("Method " + getName().asString() + getSignature().asString() + "@" + getHandle()); | |
249 } | |
250 | |
251 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
252 super.iterateFields(visitor, doVMFields); | |
253 if (doVMFields) { | |
254 visitor.doOop(constMethod, true); | |
255 visitor.doOop(constants, true); | |
256 visitor.doCInt(methodSize, true); | |
257 visitor.doCInt(maxStack, true); | |
258 visitor.doCInt(maxLocals, true); | |
259 visitor.doCInt(sizeOfParameters, true); | |
260 visitor.doCInt(accessFlags, true); | |
261 } | |
262 } | |
263 | |
264 public boolean hasLineNumberTable() { | |
265 return getConstMethod().hasLineNumberTable(); | |
266 } | |
267 | |
268 public int getLineNumberFromBCI(int bci) { | |
269 return getConstMethod().getLineNumberFromBCI(bci); | |
270 } | |
271 | |
272 public LineNumberTableElement[] getLineNumberTable() { | |
273 return getConstMethod().getLineNumberTable(); | |
274 } | |
275 | |
276 public boolean hasLocalVariableTable() { | |
277 return getConstMethod().hasLocalVariableTable(); | |
278 } | |
279 | |
280 /** Should only be called if table is present */ | |
281 public LocalVariableTableElement[] getLocalVariableTable() { | |
282 return getConstMethod().getLocalVariableTable(); | |
283 } | |
284 | |
285 public Symbol getLocalVariableName(int bci, int slot) { | |
286 if (! hasLocalVariableTable()) { | |
287 return null; | |
288 } | |
289 | |
290 LocalVariableTableElement[] locals = getLocalVariableTable(); | |
291 for (int l = 0; l < locals.length; l++) { | |
292 LocalVariableTableElement local = locals[l]; | |
293 if ((bci >= local.getStartBCI()) && | |
294 (bci < (local.getStartBCI() + local.getLength())) && | |
295 slot == local.getSlot()) { | |
296 return getConstants().getSymbolAt(local.getNameCPIndex()); | |
297 } | |
298 } | |
299 | |
300 return null; | |
301 } | |
302 | |
303 public boolean hasCheckedExceptions() { | |
304 return getConstMethod().hasCheckedExceptions(); | |
305 } | |
306 | |
307 /** Should only be called if table is present */ | |
308 public CheckedExceptionElement[] getCheckedExceptions() { | |
309 return getConstMethod().getCheckedExceptions(); | |
310 } | |
311 | |
312 /** Returns name and signature in external form for debugging | |
313 purposes */ | |
314 public String externalNameAndSignature() { | |
315 final StringBuffer buf = new StringBuffer(); | |
316 buf.append(getMethodHolder().getName().asString()); | |
317 buf.append("."); | |
318 buf.append(getName().asString()); | |
319 buf.append("("); | |
320 new SignatureConverter(getSignature(), buf).iterateParameters(); | |
321 buf.append(")"); | |
322 return buf.toString().replace('/', '.'); | |
323 } | |
324 } |