Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/jdi/VirtualMachineImpl.java @ 3972:4f93f0d00802
7059019: G1: add G1 support to the SA
Summary: Extend the SA to recognize the G1CollectedHeap and implement any code that's needed by our serviceability tools (jmap, jinfo, jstack, etc.) that depend on the SA.
Reviewed-by: never, poonam, johnc
author | tonyp |
---|---|
date | Tue, 20 Sep 2011 09:59:59 -0400 |
parents | f6f3bb0ee072 |
children | 49036505ab5f |
rev | line source |
---|---|
0 | 1 /* |
2471
37be97a58393
7010849: 5/5 Extraneous javac source/target options when building sa-jdi
andrew
parents:
1552
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2 * Copyright (c) 2002, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
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0
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
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0
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changeset
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20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
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0
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changeset
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.jdi; | |
26 | |
27 import com.sun.jdi.*; | |
28 import com.sun.jdi.event.EventQueue; | |
29 import com.sun.jdi.request.EventRequestManager; | |
30 | |
31 import sun.jvm.hotspot.HotSpotAgent; | |
32 import sun.jvm.hotspot.types.TypeDataBase; | |
33 import sun.jvm.hotspot.oops.Klass; | |
34 import sun.jvm.hotspot.oops.InstanceKlass; | |
35 import sun.jvm.hotspot.oops.ArrayKlass; | |
36 import sun.jvm.hotspot.oops.ObjArrayKlass; | |
37 import sun.jvm.hotspot.oops.TypeArrayKlass; | |
38 import sun.jvm.hotspot.oops.Oop; | |
39 import sun.jvm.hotspot.oops.Instance; | |
40 import sun.jvm.hotspot.oops.Array; | |
41 import sun.jvm.hotspot.oops.ObjArray; | |
42 import sun.jvm.hotspot.oops.TypeArray; | |
43 import sun.jvm.hotspot.oops.Symbol; | |
44 import sun.jvm.hotspot.oops.ObjectHeap; | |
45 import sun.jvm.hotspot.oops.DefaultHeapVisitor; | |
46 import sun.jvm.hotspot.oops.JVMDIClassStatus; | |
47 import sun.jvm.hotspot.runtime.VM; | |
48 import sun.jvm.hotspot.runtime.JavaThread; | |
49 import sun.jvm.hotspot.memory.SystemDictionary; | |
50 import sun.jvm.hotspot.memory.SymbolTable; | |
51 import sun.jvm.hotspot.memory.Universe; | |
52 import sun.jvm.hotspot.utilities.Assert; | |
53 | |
54 import java.util.List; | |
55 import java.util.ArrayList; | |
56 import java.util.Map; | |
57 import java.util.Iterator; | |
58 import java.util.Collections; | |
59 import java.util.HashMap; | |
60 import java.util.Observer; | |
61 import java.util.StringTokenizer; | |
62 import java.lang.ref.SoftReference; | |
63 import java.lang.ref.ReferenceQueue; | |
64 import java.lang.ref.Reference; | |
65 | |
66 public class VirtualMachineImpl extends MirrorImpl implements PathSearchingVirtualMachine { | |
67 | |
68 private HotSpotAgent saAgent = new HotSpotAgent(); | |
69 private VM saVM; | |
70 private Universe saUniverse; | |
71 private SystemDictionary saSystemDictionary; | |
72 private SymbolTable saSymbolTable; | |
73 private ObjectHeap saObjectHeap; | |
74 | |
75 VM saVM() { | |
76 return saVM; | |
77 } | |
78 | |
79 SystemDictionary saSystemDictionary() { | |
80 return saSystemDictionary; | |
81 } | |
82 | |
83 SymbolTable saSymbolTable() { | |
84 return saSymbolTable; | |
85 } | |
86 | |
87 Universe saUniverse() { | |
88 return saUniverse; | |
89 } | |
90 | |
91 ObjectHeap saObjectHeap() { | |
92 return saObjectHeap; | |
93 } | |
94 | |
95 com.sun.jdi.VirtualMachineManager vmmgr; | |
96 | |
97 private final ThreadGroup threadGroupForJDI; | |
98 | |
99 // Per-vm singletons for primitive types and for void. | |
100 // singleton-ness protected by "synchronized(this)". | |
101 private BooleanType theBooleanType; | |
102 private ByteType theByteType; | |
103 private CharType theCharType; | |
104 private ShortType theShortType; | |
105 private IntegerType theIntegerType; | |
106 private LongType theLongType; | |
107 private FloatType theFloatType; | |
108 private DoubleType theDoubleType; | |
109 | |
110 private VoidType theVoidType; | |
111 | |
112 private VoidValue voidVal; | |
113 private Map typesByID; // Map<Klass, ReferenceTypeImpl> | |
114 private List typesBySignature; // List<ReferenceTypeImpl> - used in signature search | |
115 private boolean retrievedAllTypes = false; | |
116 private List bootstrapClasses; // all bootstrap classes | |
117 private ArrayList allThreads; | |
118 private ArrayList topLevelGroups; | |
119 final int sequenceNumber; | |
120 | |
121 // ObjectReference cache | |
122 // "objectsByID" protected by "synchronized(this)". | |
123 private final Map objectsByID = new HashMap(); | |
124 private final ReferenceQueue referenceQueue = new ReferenceQueue(); | |
125 | |
126 // names of some well-known classes to jdi | |
127 private Symbol javaLangString; | |
128 private Symbol javaLangThread; | |
129 private Symbol javaLangThreadGroup; | |
130 private Symbol javaLangClass; | |
131 private Symbol javaLangClassLoader; | |
132 | |
133 // used in ReferenceTypeImpl.isThrowableBacktraceField | |
134 private Symbol javaLangThrowable; | |
135 | |
136 // names of classes used in array assignment check | |
137 // refer to ArrayTypeImpl.isAssignableTo | |
138 private Symbol javaLangObject; | |
139 private Symbol javaLangCloneable; | |
140 private Symbol javaIoSerializable; | |
141 | |
142 // symbol used in ClassTypeImpl.isEnum check | |
143 private Symbol javaLangEnum; | |
144 | |
145 Symbol javaLangObject() { | |
146 return javaLangObject; | |
147 } | |
148 | |
149 Symbol javaLangCloneable() { | |
150 return javaLangCloneable; | |
151 } | |
152 | |
153 Symbol javaIoSerializable() { | |
154 return javaIoSerializable; | |
155 } | |
156 | |
157 Symbol javaLangEnum() { | |
158 return javaLangEnum; | |
159 } | |
160 | |
161 Symbol javaLangThrowable() { | |
162 return javaLangThrowable; | |
163 } | |
164 | |
165 // name of the current default stratum | |
166 private String defaultStratum; | |
167 | |
168 // initialize known class name symbols | |
169 private void initClassNameSymbols() { | |
170 SymbolTable st = saSymbolTable(); | |
171 javaLangString = st.probe("java/lang/String"); | |
172 javaLangThread = st.probe("java/lang/Thread"); | |
173 javaLangThreadGroup = st.probe("java/lang/ThreadGroup"); | |
174 javaLangClass = st.probe("java/lang/Class"); | |
175 javaLangClassLoader = st.probe("java/lang/ClassLoader"); | |
176 javaLangThrowable = st.probe("java/lang/Throwable"); | |
177 javaLangObject = st.probe("java/lang/Object"); | |
178 javaLangCloneable = st.probe("java/lang/Cloneable"); | |
179 javaIoSerializable = st.probe("java/io/Serializable"); | |
180 javaLangEnum = st.probe("java/lang/Enum"); | |
181 } | |
182 | |
183 private void init() { | |
184 saVM = VM.getVM(); | |
185 saUniverse = saVM.getUniverse(); | |
186 saSystemDictionary = saVM.getSystemDictionary(); | |
187 saSymbolTable = saVM.getSymbolTable(); | |
188 saObjectHeap = saVM.getObjectHeap(); | |
189 initClassNameSymbols(); | |
190 } | |
191 | |
192 static public VirtualMachineImpl createVirtualMachineForCorefile(VirtualMachineManager mgr, | |
193 String javaExecutableName, | |
194 String coreFileName, | |
195 int sequenceNumber) | |
196 throws Exception { | |
197 if (Assert.ASSERTS_ENABLED) { | |
198 Assert.that(coreFileName != null, "SA VirtualMachineImpl: core filename = null is not yet implemented"); | |
199 } | |
200 if (Assert.ASSERTS_ENABLED) { | |
201 Assert.that(javaExecutableName != null, "SA VirtualMachineImpl: java executable = null is not yet implemented"); | |
202 } | |
203 | |
204 VirtualMachineImpl myvm = new VirtualMachineImpl(mgr, sequenceNumber); | |
205 try { | |
206 myvm.saAgent.attach(javaExecutableName, coreFileName); | |
207 myvm.init(); | |
208 } catch (Exception ee) { | |
209 myvm.saAgent.detach(); | |
210 throw ee; | |
211 } | |
212 return myvm; | |
213 } | |
214 | |
215 static public VirtualMachineImpl createVirtualMachineForPID(VirtualMachineManager mgr, | |
216 int pid, | |
217 int sequenceNumber) | |
218 throws Exception { | |
219 | |
220 VirtualMachineImpl myvm = new VirtualMachineImpl(mgr, sequenceNumber); | |
221 try { | |
222 myvm.saAgent.attach(pid); | |
223 myvm.init(); | |
224 } catch (Exception ee) { | |
225 myvm.saAgent.detach(); | |
226 throw ee; | |
227 } | |
228 return myvm; | |
229 } | |
230 | |
231 static public VirtualMachineImpl createVirtualMachineForServer(VirtualMachineManager mgr, | |
232 String server, | |
233 int sequenceNumber) | |
234 throws Exception { | |
235 if (Assert.ASSERTS_ENABLED) { | |
236 Assert.that(server != null, "SA VirtualMachineImpl: DebugServer = null is not yet implemented"); | |
237 } | |
238 | |
239 VirtualMachineImpl myvm = new VirtualMachineImpl(mgr, sequenceNumber); | |
240 try { | |
241 myvm.saAgent.attach(server); | |
242 myvm.init(); | |
243 } catch (Exception ee) { | |
244 myvm.saAgent.detach(); | |
245 throw ee; | |
246 } | |
247 return myvm; | |
248 } | |
249 | |
250 | |
251 VirtualMachineImpl(VirtualMachineManager mgr, int sequenceNumber) | |
252 throws Exception { | |
253 super(null); // Can't use super(this) | |
254 vm = this; | |
255 | |
256 this.sequenceNumber = sequenceNumber; | |
257 this.vmmgr = mgr; | |
258 | |
259 /* Create ThreadGroup to be used by all threads servicing | |
260 * this VM. | |
261 */ | |
262 threadGroupForJDI = new ThreadGroup("JDI [" + | |
263 this.hashCode() + "]"); | |
264 | |
265 ((com.sun.tools.jdi.VirtualMachineManagerImpl)mgr).addVirtualMachine(this); | |
266 } | |
267 | |
268 // we reflectively use newly spec'ed class because our ALT_BOOTDIR | |
269 // is 1.4.2 and not 1.5. | |
270 private static Class vmCannotBeModifiedExceptionClass = null; | |
271 void throwNotReadOnlyException(String operation) { | |
272 RuntimeException re = null; | |
273 if (vmCannotBeModifiedExceptionClass == null) { | |
274 try { | |
275 vmCannotBeModifiedExceptionClass = Class.forName("com.sun.jdi.VMCannotBeModifiedException"); | |
276 } catch (ClassNotFoundException cnfe) { | |
277 vmCannotBeModifiedExceptionClass = UnsupportedOperationException.class; | |
278 } | |
279 } | |
280 try { | |
281 re = (RuntimeException) vmCannotBeModifiedExceptionClass.newInstance(); | |
282 } catch (Exception exp) { | |
283 re = new RuntimeException(exp.getMessage()); | |
284 } | |
285 throw re; | |
286 } | |
287 | |
288 public boolean equals(Object obj) { | |
289 // Oh boy; big recursion troubles if we don't have this! | |
290 // See MirrorImpl.equals | |
291 return this == obj; | |
292 } | |
293 | |
294 public int hashCode() { | |
295 // big recursion if we don't have this. See MirrorImpl.hashCode | |
296 return System.identityHashCode(this); | |
297 } | |
298 | |
299 public List classesByName(String className) { | |
300 String signature = JNITypeParser.typeNameToSignature(className); | |
301 List list; | |
302 if (!retrievedAllTypes) { | |
303 retrieveAllClasses(); | |
304 } | |
305 list = findReferenceTypes(signature); | |
306 return Collections.unmodifiableList(list); | |
307 } | |
308 | |
309 public List allClasses() { | |
310 if (!retrievedAllTypes) { | |
311 retrieveAllClasses(); | |
312 } | |
313 ArrayList a; | |
314 synchronized (this) { | |
315 a = new ArrayList(typesBySignature); | |
316 } | |
317 return Collections.unmodifiableList(a); | |
318 } | |
319 | |
320 // classes loaded by bootstrap loader | |
321 List bootstrapClasses() { | |
322 if (bootstrapClasses == null) { | |
323 bootstrapClasses = new ArrayList(); | |
324 List all = allClasses(); | |
325 for (Iterator itr = all.iterator(); itr.hasNext();) { | |
326 ReferenceType type = (ReferenceType) itr.next(); | |
327 if (type.classLoader() == null) { | |
328 bootstrapClasses.add(type); | |
329 } | |
330 } | |
331 } | |
332 return bootstrapClasses; | |
333 } | |
334 | |
335 private synchronized List findReferenceTypes(String signature) { | |
336 if (typesByID == null) { | |
337 return new ArrayList(0); | |
338 } | |
339 | |
340 // we haven't sorted types by signatures. But we can take | |
341 // advantage of comparing symbols instead of name. In the worst | |
342 // case, we will be comparing N addresses rather than N strings | |
343 // where N being total no. of classes in allClasses() list. | |
344 | |
345 // The signature could be Lx/y/z; or [.... | |
346 // If it is Lx/y/z; the internal type name is x/y/x | |
347 // for array klasses internal type name is same as | |
348 // signature | |
349 String typeName = null; | |
350 if (signature.charAt(0) == 'L') { | |
351 typeName = signature.substring(1, signature.length() - 1); | |
352 } else { | |
353 typeName = signature; | |
354 } | |
355 | |
356 Symbol typeNameSym = saSymbolTable().probe(typeName); | |
357 // if there is no symbol in VM, then we wouldn't have that type | |
358 if (typeNameSym == null) { | |
359 return new ArrayList(0); | |
360 } | |
361 | |
362 Iterator iter = typesBySignature.iterator(); | |
363 List list = new ArrayList(); | |
364 while (iter.hasNext()) { | |
365 // We have cached type name as symbol in reference type | |
366 ReferenceTypeImpl type = (ReferenceTypeImpl)iter.next(); | |
367 if (typeNameSym.equals(type.typeNameAsSymbol())) { | |
368 list.add(type); | |
369 } | |
370 } | |
371 return list; | |
372 } | |
373 | |
374 private void retrieveAllClasses() { | |
375 final List saKlasses = new ArrayList(); | |
376 SystemDictionary.ClassVisitor visitor = new SystemDictionary.ClassVisitor() { | |
377 public void visit(Klass k) { | |
378 for (Klass l = k; l != null; l = l.arrayKlassOrNull()) { | |
379 // for non-array classes filter out un-prepared classes | |
380 // refer to 'allClasses' in share/back/VirtualMachineImpl.c | |
381 if (l instanceof ArrayKlass) { | |
382 saKlasses.add(l); | |
383 } else { | |
384 int status = l.getClassStatus(); | |
385 if ((status & JVMDIClassStatus.PREPARED) != 0) { | |
386 saKlasses.add(l); | |
387 } | |
388 } | |
389 } | |
390 } | |
391 }; | |
392 | |
393 // refer to jvmtiGetLoadedClasses.cpp - getLoadedClasses in VM code. | |
394 | |
395 // classes from SystemDictionary | |
396 saSystemDictionary.classesDo(visitor); | |
397 | |
398 // From SystemDictionary we do not get primitive single | |
399 // dimensional array classes. add primitive single dimensional array | |
400 // klasses from Universe. | |
401 saVM.getUniverse().basicTypeClassesDo(visitor); | |
402 | |
403 // Hold lock during processing to improve performance | |
404 // and to have safe check/set of retrievedAllTypes | |
405 synchronized (this) { | |
406 if (!retrievedAllTypes) { | |
407 // Number of classes | |
408 int count = saKlasses.size(); | |
409 for (int ii = 0; ii < count; ii++) { | |
410 Klass kk = (Klass)saKlasses.get(ii); | |
411 ReferenceTypeImpl type = referenceType(kk); | |
412 } | |
413 retrievedAllTypes = true; | |
414 } | |
415 } | |
416 } | |
417 | |
418 ReferenceTypeImpl referenceType(Klass kk) { | |
419 ReferenceTypeImpl retType = null; | |
420 synchronized (this) { | |
421 if (typesByID != null) { | |
422 retType = (ReferenceTypeImpl)typesByID.get(kk); | |
423 } | |
424 if (retType == null) { | |
425 retType = addReferenceType(kk); | |
426 } | |
427 } | |
428 return retType; | |
429 } | |
430 | |
431 private void initReferenceTypes() { | |
432 typesByID = new HashMap(); | |
433 typesBySignature = new ArrayList(); | |
434 } | |
435 | |
436 private synchronized ReferenceTypeImpl addReferenceType(Klass kk) { | |
437 if (typesByID == null) { | |
438 initReferenceTypes(); | |
439 } | |
440 ReferenceTypeImpl newRefType = null; | |
441 if (kk instanceof ObjArrayKlass || kk instanceof TypeArrayKlass) { | |
442 newRefType = new ArrayTypeImpl(this, (ArrayKlass)kk); | |
443 } else if (kk instanceof InstanceKlass) { | |
444 if (kk.isInterface()) { | |
445 newRefType = new InterfaceTypeImpl(this, (InstanceKlass)kk); | |
446 } else { | |
447 newRefType = new ClassTypeImpl(this, (InstanceKlass)kk); | |
448 } | |
449 } else { | |
450 throw new RuntimeException("should not reach here"); | |
451 } | |
452 | |
453 typesByID.put(kk, newRefType); | |
454 typesBySignature.add(newRefType); | |
455 return newRefType; | |
456 } | |
457 | |
458 ThreadGroup threadGroupForJDI() { | |
459 return threadGroupForJDI; | |
460 } | |
461 | |
462 public void redefineClasses(Map classToBytes) { | |
463 throwNotReadOnlyException("VirtualMachineImpl.redefineClasses()"); | |
464 } | |
465 | |
466 private List getAllThreads() { | |
467 if (allThreads == null) { | |
468 allThreads = new ArrayList(10); // Might be enough, might not be | |
469 for (sun.jvm.hotspot.runtime.JavaThread thread = | |
470 saVM.getThreads().first(); thread != null; | |
471 thread = thread.next()) { | |
472 // refer to JvmtiEnv::GetAllThreads in jvmtiEnv.cpp. | |
473 // filter out the hidden-from-external-view threads. | |
474 if (thread.isHiddenFromExternalView() == false) { | |
475 ThreadReferenceImpl myThread = threadMirror(thread); | |
476 allThreads.add(myThread); | |
477 } | |
478 } | |
479 } | |
480 return allThreads; | |
481 } | |
482 | |
483 public List allThreads() { //fixme jjh | |
484 return Collections.unmodifiableList(getAllThreads()); | |
485 } | |
486 | |
487 public void suspend() { | |
488 throwNotReadOnlyException("VirtualMachineImpl.suspend()"); | |
489 } | |
490 | |
491 public void resume() { | |
492 throwNotReadOnlyException("VirtualMachineImpl.resume()"); | |
493 } | |
494 | |
495 public List topLevelThreadGroups() { //fixme jjh | |
496 // The doc for ThreadGroup says that The top-level thread group | |
497 // is the only thread group whose parent is null. This means there is | |
498 // only one top level thread group. There will be a thread in this | |
499 // group so we will just find a thread whose threadgroup has no parent | |
500 // and that will be it. | |
501 | |
502 if (topLevelGroups == null) { | |
503 topLevelGroups = new ArrayList(1); | |
504 Iterator myIt = getAllThreads().iterator(); | |
505 while (myIt.hasNext()) { | |
506 ThreadReferenceImpl myThread = (ThreadReferenceImpl)myIt.next(); | |
507 ThreadGroupReference myGroup = myThread.threadGroup(); | |
508 ThreadGroupReference myParent = myGroup.parent(); | |
509 if (myGroup.parent() == null) { | |
510 topLevelGroups.add(myGroup); | |
511 break; | |
512 } | |
513 } | |
514 } | |
515 return Collections.unmodifiableList(topLevelGroups); | |
516 } | |
517 | |
518 public EventQueue eventQueue() { | |
519 throwNotReadOnlyException("VirtualMachine.eventQueue()"); | |
520 return null; | |
521 } | |
522 | |
523 public EventRequestManager eventRequestManager() { | |
524 throwNotReadOnlyException("VirtualMachineImpl.eventRequestManager()"); | |
525 return null; | |
526 } | |
527 | |
528 public BooleanValue mirrorOf(boolean value) { | |
529 return new BooleanValueImpl(this,value); | |
530 } | |
531 | |
532 public ByteValue mirrorOf(byte value) { | |
533 return new ByteValueImpl(this,value); | |
534 } | |
535 | |
536 public CharValue mirrorOf(char value) { | |
537 return new CharValueImpl(this,value); | |
538 } | |
539 | |
540 public ShortValue mirrorOf(short value) { | |
541 return new ShortValueImpl(this,value); | |
542 } | |
543 | |
544 public IntegerValue mirrorOf(int value) { | |
545 return new IntegerValueImpl(this,value); | |
546 } | |
547 | |
548 public LongValue mirrorOf(long value) { | |
549 return new LongValueImpl(this,value); | |
550 } | |
551 | |
552 public FloatValue mirrorOf(float value) { | |
553 return new FloatValueImpl(this,value); | |
554 } | |
555 | |
556 public DoubleValue mirrorOf(double value) { | |
557 return new DoubleValueImpl(this,value); | |
558 } | |
559 | |
560 public StringReference mirrorOf(String value) { | |
561 throwNotReadOnlyException("VirtualMachinestop.mirrorOf(String)"); | |
562 return null; | |
563 } | |
564 | |
565 public VoidValue mirrorOfVoid() { | |
566 if (voidVal == null) { | |
567 voidVal = new VoidValueImpl(this); | |
568 } | |
569 return voidVal; | |
570 } | |
571 | |
572 | |
573 public Process process() { | |
574 throwNotReadOnlyException("VirtualMachine.process"); | |
575 return null; | |
576 } | |
577 | |
578 // dispose observer for Class re-use. refer to ConnectorImpl. | |
579 private Observer disposeObserver; | |
580 | |
581 // ConnectorImpl loaded by a different class loader can not access it. | |
582 // i.e., runtime package of <ConnectorImpl, L1> is not the same that of | |
583 // <VirtualMachineImpl, L2> when L1 != L2. So, package private method | |
584 // can be called reflectively after using setAccessible(true). | |
585 | |
586 void setDisposeObserver(Observer observer) { | |
587 disposeObserver = observer; | |
588 } | |
589 | |
590 private void notifyDispose() { | |
591 if (Assert.ASSERTS_ENABLED) { | |
592 Assert.that(disposeObserver != null, "null VM.dispose observer"); | |
593 } | |
594 disposeObserver.update(null, null); | |
595 } | |
596 | |
597 public void dispose() { | |
598 saAgent.detach(); | |
599 notifyDispose(); | |
600 } | |
601 | |
602 public void exit(int exitCode) { | |
603 throwNotReadOnlyException("VirtualMachine.exit(int)"); | |
604 } | |
605 | |
606 public boolean canBeModified() { | |
607 return false; | |
608 } | |
609 | |
610 public boolean canWatchFieldModification() { | |
611 return false; | |
612 } | |
613 | |
614 public boolean canWatchFieldAccess() { | |
615 return false; | |
616 } | |
617 | |
618 public boolean canGetBytecodes() { | |
619 return true; | |
620 } | |
621 | |
622 public boolean canGetSyntheticAttribute() { | |
623 return true; | |
624 } | |
625 | |
626 // FIXME: For now, all monitor capabilities are disabled | |
627 public boolean canGetOwnedMonitorInfo() { | |
628 return false; | |
629 } | |
630 | |
631 public boolean canGetCurrentContendedMonitor() { | |
632 return false; | |
633 } | |
634 | |
635 public boolean canGetMonitorInfo() { | |
636 return false; | |
637 } | |
638 | |
639 // because this SA works only with 1.5 and update releases | |
640 // this should always succeed unlike JVMDI/JDI. | |
641 public boolean canGet1_5LanguageFeatures() { | |
642 return true; | |
643 } | |
644 | |
645 public boolean canUseInstanceFilters() { | |
646 return false; | |
647 } | |
648 | |
649 public boolean canRedefineClasses() { | |
650 return false; | |
651 } | |
652 | |
653 public boolean canAddMethod() { | |
654 return false; | |
655 } | |
656 | |
657 public boolean canUnrestrictedlyRedefineClasses() { | |
658 return false; | |
659 } | |
660 | |
661 public boolean canPopFrames() { | |
662 return false; | |
663 } | |
664 | |
665 public boolean canGetSourceDebugExtension() { | |
666 // We can use InstanceKlass.getSourceDebugExtension only if | |
667 // ClassFileParser parsed the info. But, ClassFileParser parses | |
668 // SourceDebugExtension attribute only if corresponding JVMDI/TI | |
669 // capability is set to true. Currently, vmStructs does not expose | |
670 // JVMDI/TI capabilities and hence we conservatively assume false. | |
671 return false; | |
672 } | |
673 | |
674 public boolean canRequestVMDeathEvent() { | |
675 return false; | |
676 } | |
677 | |
678 // new method since 1.6 | |
679 public boolean canForceEarlyReturn() { | |
680 return false; | |
681 } | |
682 | |
683 // new method since 1.6 | |
684 public boolean canGetConstantPool() { | |
685 return true; | |
686 } | |
687 | |
688 // new method since 1.6 | |
689 public boolean canGetClassFileVersion() { | |
690 return true; | |
691 } | |
692 | |
693 // new method since 1.6. | |
694 public boolean canGetMethodReturnValues() { | |
695 return false; | |
696 } | |
697 | |
698 // new method since 1.6 | |
699 // Real body will be supplied later. | |
700 public boolean canGetInstanceInfo() { | |
701 return true; | |
702 } | |
703 | |
704 // new method since 1.6 | |
705 public boolean canUseSourceNameFilters() { | |
706 return false; | |
707 } | |
708 | |
709 // new method since 1.6. | |
710 public boolean canRequestMonitorEvents() { | |
711 return false; | |
712 } | |
713 | |
714 // new method since 1.6. | |
715 public boolean canGetMonitorFrameInfo() { | |
716 return true; | |
717 } | |
718 | |
719 // new method since 1.6 | |
720 // Real body will be supplied later. | |
721 public long[] instanceCounts(List classes) { | |
722 if (!canGetInstanceInfo()) { | |
723 throw new UnsupportedOperationException( | |
724 "target does not support getting instances"); | |
725 } | |
726 | |
727 final long[] retValue = new long[classes.size()] ; | |
728 | |
729 final Klass [] klassArray = new Klass[classes.size()]; | |
730 | |
731 boolean allAbstractClasses = true; | |
732 for (int i=0; i < classes.size(); i++) { | |
733 ReferenceTypeImpl rti = (ReferenceTypeImpl)classes.get(i); | |
734 klassArray[i] = rti.ref(); | |
735 retValue[i]=0; | |
736 if (!(rti.isAbstract() || ((ReferenceType)rti instanceof InterfaceType))) { | |
737 allAbstractClasses = false; | |
738 } | |
739 } | |
740 | |
741 if (allAbstractClasses) { | |
742 return retValue; | |
743 } | |
744 final int size = classes.size(); | |
745 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
746 public boolean doObj(Oop oop) { | |
747 for (int i=0; i < size; i++) { | |
748 if (klassArray[i].equals(oop.getKlass())) { | |
749 retValue[i]++; | |
750 break; | |
751 } | |
752 } | |
753 return false; | |
754 } | |
755 }); | |
756 | |
757 return retValue; | |
758 } | |
759 | |
760 private List getPath (String pathName) { | |
761 String cp = saVM.getSystemProperty(pathName); | |
762 String pathSep = saVM.getSystemProperty("path.separator"); | |
763 ArrayList al = new ArrayList(); | |
764 StringTokenizer st = new StringTokenizer(cp, pathSep); | |
765 while (st.hasMoreTokens()) { | |
766 al.add(st.nextToken()); | |
767 } | |
768 al.trimToSize(); | |
769 return al; | |
770 } | |
771 | |
772 public List classPath() { | |
773 return getPath("java.class.path"); | |
774 } | |
775 | |
776 public List bootClassPath() { | |
777 return getPath("sun.boot.class.path"); | |
778 } | |
779 | |
780 public String baseDirectory() { | |
781 return saVM.getSystemProperty("user.dir"); | |
782 } | |
783 | |
784 public void setDefaultStratum(String stratum) { | |
785 defaultStratum = stratum; | |
786 } | |
787 | |
788 public String getDefaultStratum() { | |
789 return defaultStratum; | |
790 } | |
791 | |
792 public String description() { | |
793 return java.text.MessageFormat.format(java.util.ResourceBundle. | |
794 getBundle("com.sun.tools.jdi.resources.jdi").getString("version_format"), | |
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795 "" + vmmgr.majorInterfaceVersion(), |
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796 "" + vmmgr.minorInterfaceVersion(), |
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797 name()); |
0 | 798 } |
799 | |
800 public String version() { | |
801 return saVM.getSystemProperty("java.version"); | |
802 } | |
803 | |
804 public String name() { | |
805 StringBuffer sb = new StringBuffer(); | |
806 sb.append("JVM version "); | |
807 sb.append(version()); | |
808 sb.append(" ("); | |
809 sb.append(saVM.getSystemProperty("java.vm.name")); | |
810 sb.append(", "); | |
811 sb.append(saVM.getSystemProperty("java.vm.info")); | |
812 sb.append(")"); | |
813 return sb.toString(); | |
814 } | |
815 | |
816 // from interface Mirror | |
817 public VirtualMachine virtualMachine() { | |
818 return this; | |
819 } | |
820 | |
821 public String toString() { | |
822 return name(); | |
823 } | |
824 | |
825 public void setDebugTraceMode(int traceFlags) { | |
826 // spec. says output is implementation dependent | |
827 // and trace mode may be ignored. we ignore it :-) | |
828 } | |
829 | |
830 // heap walking API | |
831 | |
832 // capability check | |
833 public boolean canWalkHeap() { | |
834 return true; | |
835 } | |
836 | |
837 // return a list of all objects in heap | |
838 public List/*<ObjectReference>*/ allObjects() { | |
839 final List objects = new ArrayList(0); | |
840 saObjectHeap.iterate( | |
841 new DefaultHeapVisitor() { | |
842 public boolean doObj(Oop oop) { | |
843 objects.add(objectMirror(oop)); | |
844 return false; | |
845 } | |
846 }); | |
847 return objects; | |
848 } | |
849 | |
850 // equivalent to objectsByType(type, true) | |
851 public List/*<ObjectReference>*/ objectsByType(ReferenceType type) { | |
852 return objectsByType(type, true); | |
853 } | |
854 | |
855 // returns objects of type exactly equal to given type | |
856 private List/*<ObjectReference>*/ objectsByExactType(ReferenceType type) { | |
857 final List objects = new ArrayList(0); | |
858 final Klass givenKls = ((ReferenceTypeImpl)type).ref(); | |
859 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
860 public boolean doObj(Oop oop) { | |
861 if (givenKls.equals(oop.getKlass())) { | |
862 objects.add(objectMirror(oop)); | |
863 } | |
864 return false; | |
865 } | |
866 }); | |
867 return objects; | |
868 } | |
869 | |
870 // returns objects of given type as well as it's subtypes | |
871 private List/*<ObjectReference>*/ objectsBySubType(ReferenceType type) { | |
872 final List objects = new ArrayList(0); | |
873 final ReferenceType givenType = type; | |
874 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
875 public boolean doObj(Oop oop) { | |
876 ReferenceTypeImpl curType = (ReferenceTypeImpl) referenceType(oop.getKlass()); | |
877 if (curType.isAssignableTo(givenType)) { | |
878 objects.add(objectMirror(oop)); | |
879 } | |
880 return false; | |
881 } | |
882 }); | |
883 return objects; | |
884 } | |
885 | |
886 // includeSubtypes - do you want to include subclass/subtype instances of given | |
887 // ReferenceType or do we want objects of exact type only? | |
888 public List/*<ObjectReference>*/ objectsByType(ReferenceType type, boolean includeSubtypes) { | |
889 Klass kls = ((ReferenceTypeImpl)type).ref(); | |
890 if (kls instanceof InstanceKlass) { | |
891 InstanceKlass ik = (InstanceKlass) kls; | |
892 if (ik.isInterface()) { | |
893 if (ik.nofImplementors() == 0L) { | |
894 return new ArrayList(0); | |
895 } | |
896 } else { | |
897 // if the Klass is final or if there are no subklasses loaded yet | |
898 if (ik.getAccessFlagsObj().isFinal() || ik.getSubklassKlass() == null) { | |
899 includeSubtypes = false; | |
900 } | |
901 } | |
902 } else { | |
903 // no subtypes for primitive array types | |
904 ArrayTypeImpl arrayType = (ArrayTypeImpl) type; | |
905 try { | |
906 Type componentType = arrayType.componentType(); | |
907 if (componentType instanceof PrimitiveType) { | |
908 includeSubtypes = false; | |
909 } | |
910 } catch (ClassNotLoadedException cnle) { | |
911 // ignore. component type not yet loaded | |
912 } | |
913 } | |
914 | |
915 if (includeSubtypes) { | |
916 return objectsBySubType(type); | |
917 } else { | |
918 return objectsByExactType(type); | |
919 } | |
920 } | |
921 | |
922 Type findBootType(String signature) throws ClassNotLoadedException { | |
923 List types = allClasses(); | |
924 Iterator iter = types.iterator(); | |
925 while (iter.hasNext()) { | |
926 ReferenceType type = (ReferenceType)iter.next(); | |
927 if ((type.classLoader() == null) && | |
928 (type.signature().equals(signature))) { | |
929 return type; | |
930 } | |
931 } | |
932 JNITypeParser parser = new JNITypeParser(signature); | |
933 throw new ClassNotLoadedException(parser.typeName(), | |
934 "Type " + parser.typeName() + " not loaded"); | |
935 } | |
936 | |
937 BooleanType theBooleanType() { | |
938 if (theBooleanType == null) { | |
939 synchronized(this) { | |
940 if (theBooleanType == null) { | |
941 theBooleanType = new BooleanTypeImpl(this); | |
942 } | |
943 } | |
944 } | |
945 return theBooleanType; | |
946 } | |
947 | |
948 ByteType theByteType() { | |
949 if (theByteType == null) { | |
950 synchronized(this) { | |
951 if (theByteType == null) { | |
952 theByteType = new ByteTypeImpl(this); | |
953 } | |
954 } | |
955 } | |
956 return theByteType; | |
957 } | |
958 | |
959 CharType theCharType() { | |
960 if (theCharType == null) { | |
961 synchronized(this) { | |
962 if (theCharType == null) { | |
963 theCharType = new CharTypeImpl(this); | |
964 } | |
965 } | |
966 } | |
967 return theCharType; | |
968 } | |
969 | |
970 ShortType theShortType() { | |
971 if (theShortType == null) { | |
972 synchronized(this) { | |
973 if (theShortType == null) { | |
974 theShortType = new ShortTypeImpl(this); | |
975 } | |
976 } | |
977 } | |
978 return theShortType; | |
979 } | |
980 | |
981 IntegerType theIntegerType() { | |
982 if (theIntegerType == null) { | |
983 synchronized(this) { | |
984 if (theIntegerType == null) { | |
985 theIntegerType = new IntegerTypeImpl(this); | |
986 } | |
987 } | |
988 } | |
989 return theIntegerType; | |
990 } | |
991 | |
992 LongType theLongType() { | |
993 if (theLongType == null) { | |
994 synchronized(this) { | |
995 if (theLongType == null) { | |
996 theLongType = new LongTypeImpl(this); | |
997 } | |
998 } | |
999 } | |
1000 return theLongType; | |
1001 } | |
1002 | |
1003 FloatType theFloatType() { | |
1004 if (theFloatType == null) { | |
1005 synchronized(this) { | |
1006 if (theFloatType == null) { | |
1007 theFloatType = new FloatTypeImpl(this); | |
1008 } | |
1009 } | |
1010 } | |
1011 return theFloatType; | |
1012 } | |
1013 | |
1014 DoubleType theDoubleType() { | |
1015 if (theDoubleType == null) { | |
1016 synchronized(this) { | |
1017 if (theDoubleType == null) { | |
1018 theDoubleType = new DoubleTypeImpl(this); | |
1019 } | |
1020 } | |
1021 } | |
1022 return theDoubleType; | |
1023 } | |
1024 | |
1025 VoidType theVoidType() { | |
1026 if (theVoidType == null) { | |
1027 synchronized(this) { | |
1028 if (theVoidType == null) { | |
1029 theVoidType = new VoidTypeImpl(this); | |
1030 } | |
1031 } | |
1032 } | |
1033 return theVoidType; | |
1034 } | |
1035 | |
1036 PrimitiveType primitiveTypeMirror(char tag) { | |
1037 switch (tag) { | |
1038 case 'Z': | |
1039 return theBooleanType(); | |
1040 case 'B': | |
1041 return theByteType(); | |
1042 case 'C': | |
1043 return theCharType(); | |
1044 case 'S': | |
1045 return theShortType(); | |
1046 case 'I': | |
1047 return theIntegerType(); | |
1048 case 'J': | |
1049 return theLongType(); | |
1050 case 'F': | |
1051 return theFloatType(); | |
1052 case 'D': | |
1053 return theDoubleType(); | |
1054 default: | |
1055 throw new IllegalArgumentException("Unrecognized primitive tag " + tag); | |
1056 } | |
1057 } | |
1058 | |
1059 private void processQueue() { | |
1060 Reference ref; | |
1061 while ((ref = referenceQueue.poll()) != null) { | |
1062 SoftObjectReference softRef = (SoftObjectReference)ref; | |
1063 removeObjectMirror(softRef); | |
1064 } | |
1065 } | |
1066 | |
1067 // Address value is used as uniqueID by ObjectReferenceImpl | |
1068 long getAddressValue(Oop obj) { | |
1069 return vm.saVM.getDebugger().getAddressValue(obj.getHandle()); | |
1070 } | |
1071 | |
1072 synchronized ObjectReferenceImpl objectMirror(Oop key) { | |
1073 | |
1074 // Handle any queue elements that are not strongly reachable | |
1075 processQueue(); | |
1076 | |
1077 if (key == null) { | |
1078 return null; | |
1079 } | |
1080 ObjectReferenceImpl object = null; | |
1081 | |
1082 /* | |
1083 * Attempt to retrieve an existing object object reference | |
1084 */ | |
1085 SoftObjectReference ref = (SoftObjectReference)objectsByID.get(key); | |
1086 if (ref != null) { | |
1087 object = ref.object(); | |
1088 } | |
1089 | |
1090 /* | |
1091 * If the object wasn't in the table, or it's soft reference was | |
1092 * cleared, create a new instance. | |
1093 */ | |
1094 if (object == null) { | |
1095 if (key instanceof Instance) { | |
1096 // look for well-known classes | |
1097 Symbol className = key.getKlass().getName(); | |
1098 if (Assert.ASSERTS_ENABLED) { | |
1099 Assert.that(className != null, "Null class name"); | |
1100 } | |
1101 Instance inst = (Instance) key; | |
1102 if (className.equals(javaLangString)) { | |
1103 object = new StringReferenceImpl(this, inst); | |
1104 } else if (className.equals(javaLangThread)) { | |
1105 object = new ThreadReferenceImpl(this, inst); | |
1106 } else if (className.equals(javaLangThreadGroup)) { | |
1107 object = new ThreadGroupReferenceImpl(this, inst); | |
1108 } else if (className.equals(javaLangClass)) { | |
1109 object = new ClassObjectReferenceImpl(this, inst); | |
1110 } else if (className.equals(javaLangClassLoader)) { | |
1111 object = new ClassLoaderReferenceImpl(this, inst); | |
1112 } else { | |
1113 // not a well-known class. But the base class may be | |
1114 // one of the known classes. | |
1115 Klass kls = key.getKlass().getSuper(); | |
1116 while (kls != null) { | |
1117 className = kls.getName(); | |
1118 // java.lang.Class and java.lang.String are final classes | |
1119 if (className.equals(javaLangThread)) { | |
1120 object = new ThreadReferenceImpl(this, inst); | |
1121 break; | |
1122 } else if(className.equals(javaLangThreadGroup)) { | |
1123 object = new ThreadGroupReferenceImpl(this, inst); | |
1124 break; | |
1125 } else if (className.equals(javaLangClassLoader)) { | |
1126 object = new ClassLoaderReferenceImpl(this, inst); | |
1127 break; | |
1128 } | |
1129 kls = kls.getSuper(); | |
1130 } | |
1131 | |
1132 if (object == null) { | |
1133 // create generic object reference | |
1134 object = new ObjectReferenceImpl(this, inst); | |
1135 } | |
1136 } | |
1137 } else if (key instanceof TypeArray) { | |
1138 object = new ArrayReferenceImpl(this, (Array) key); | |
1139 } else if (key instanceof ObjArray) { | |
1140 object = new ArrayReferenceImpl(this, (Array) key); | |
1141 } else { | |
1142 throw new RuntimeException("unexpected object type " + key); | |
1143 } | |
1144 ref = new SoftObjectReference(key, object, referenceQueue); | |
1145 | |
1146 /* | |
1147 * If there was no previous entry in the table, we add one here | |
1148 * If the previous entry was cleared, we replace it here. | |
1149 */ | |
1150 objectsByID.put(key, ref); | |
1151 } else { | |
1152 ref.incrementCount(); | |
1153 } | |
1154 | |
1155 return object; | |
1156 } | |
1157 | |
1158 synchronized void removeObjectMirror(SoftObjectReference ref) { | |
1159 /* | |
1160 * This will remove the soft reference if it has not been | |
1161 * replaced in the cache. | |
1162 */ | |
1163 objectsByID.remove(ref.key()); | |
1164 } | |
1165 | |
1166 StringReferenceImpl stringMirror(Instance id) { | |
1167 return (StringReferenceImpl) objectMirror(id); | |
1168 } | |
1169 | |
1170 ArrayReferenceImpl arrayMirror(Array id) { | |
1171 return (ArrayReferenceImpl) objectMirror(id); | |
1172 } | |
1173 | |
1174 ThreadReferenceImpl threadMirror(Instance id) { | |
1175 return (ThreadReferenceImpl) objectMirror(id); | |
1176 } | |
1177 | |
1178 ThreadReferenceImpl threadMirror(JavaThread jt) { | |
1179 return (ThreadReferenceImpl) objectMirror(jt.getThreadObj()); | |
1180 } | |
1181 | |
1182 ThreadGroupReferenceImpl threadGroupMirror(Instance id) { | |
1183 return (ThreadGroupReferenceImpl) objectMirror(id); | |
1184 } | |
1185 | |
1186 ClassLoaderReferenceImpl classLoaderMirror(Instance id) { | |
1187 return (ClassLoaderReferenceImpl) objectMirror(id); | |
1188 } | |
1189 | |
1190 ClassObjectReferenceImpl classObjectMirror(Instance id) { | |
1191 return (ClassObjectReferenceImpl) objectMirror(id); | |
1192 } | |
1193 | |
1194 // Use of soft refs and caching stuff here has to be re-examined. | |
1195 // It might not make sense for JDI - SA. | |
1196 static private class SoftObjectReference extends SoftReference { | |
1197 int count; | |
1198 Object key; | |
1199 | |
1200 SoftObjectReference(Object key, ObjectReferenceImpl mirror, | |
1201 ReferenceQueue queue) { | |
1202 super(mirror, queue); | |
1203 this.count = 1; | |
1204 this.key = key; | |
1205 } | |
1206 | |
1207 int count() { | |
1208 return count; | |
1209 } | |
1210 | |
1211 void incrementCount() { | |
1212 count++; | |
1213 } | |
1214 | |
1215 Object key() { | |
1216 return key; | |
1217 } | |
1218 | |
1219 ObjectReferenceImpl object() { | |
1220 return (ObjectReferenceImpl)get(); | |
1221 } | |
1222 } | |
1223 } |