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comparison agent/src/share/classes/sun/jvm/hotspot/jdi/VirtualMachineImpl.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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1 /* | |
2 * Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
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 // By default SA agent classes prefer dbx debugger to proc debugger | |
268 // and Windows process debugger to windbg debugger. SA expects | |
269 // special properties to be set to choose other debuggers. We will set | |
270 // those here before attaching to SA agent. | |
271 | |
272 System.setProperty("sun.jvm.hotspot.debugger.useProcDebugger", "true"); | |
273 System.setProperty("sun.jvm.hotspot.debugger.useWindbgDebugger", "true"); | |
274 } | |
275 | |
276 // we reflectively use newly spec'ed class because our ALT_BOOTDIR | |
277 // is 1.4.2 and not 1.5. | |
278 private static Class vmCannotBeModifiedExceptionClass = null; | |
279 void throwNotReadOnlyException(String operation) { | |
280 RuntimeException re = null; | |
281 if (vmCannotBeModifiedExceptionClass == null) { | |
282 try { | |
283 vmCannotBeModifiedExceptionClass = Class.forName("com.sun.jdi.VMCannotBeModifiedException"); | |
284 } catch (ClassNotFoundException cnfe) { | |
285 vmCannotBeModifiedExceptionClass = UnsupportedOperationException.class; | |
286 } | |
287 } | |
288 try { | |
289 re = (RuntimeException) vmCannotBeModifiedExceptionClass.newInstance(); | |
290 } catch (Exception exp) { | |
291 re = new RuntimeException(exp.getMessage()); | |
292 } | |
293 throw re; | |
294 } | |
295 | |
296 public boolean equals(Object obj) { | |
297 // Oh boy; big recursion troubles if we don't have this! | |
298 // See MirrorImpl.equals | |
299 return this == obj; | |
300 } | |
301 | |
302 public int hashCode() { | |
303 // big recursion if we don't have this. See MirrorImpl.hashCode | |
304 return System.identityHashCode(this); | |
305 } | |
306 | |
307 public List classesByName(String className) { | |
308 String signature = JNITypeParser.typeNameToSignature(className); | |
309 List list; | |
310 if (!retrievedAllTypes) { | |
311 retrieveAllClasses(); | |
312 } | |
313 list = findReferenceTypes(signature); | |
314 return Collections.unmodifiableList(list); | |
315 } | |
316 | |
317 public List allClasses() { | |
318 if (!retrievedAllTypes) { | |
319 retrieveAllClasses(); | |
320 } | |
321 ArrayList a; | |
322 synchronized (this) { | |
323 a = new ArrayList(typesBySignature); | |
324 } | |
325 return Collections.unmodifiableList(a); | |
326 } | |
327 | |
328 // classes loaded by bootstrap loader | |
329 List bootstrapClasses() { | |
330 if (bootstrapClasses == null) { | |
331 bootstrapClasses = new ArrayList(); | |
332 List all = allClasses(); | |
333 for (Iterator itr = all.iterator(); itr.hasNext();) { | |
334 ReferenceType type = (ReferenceType) itr.next(); | |
335 if (type.classLoader() == null) { | |
336 bootstrapClasses.add(type); | |
337 } | |
338 } | |
339 } | |
340 return bootstrapClasses; | |
341 } | |
342 | |
343 private synchronized List findReferenceTypes(String signature) { | |
344 if (typesByID == null) { | |
345 return new ArrayList(0); | |
346 } | |
347 | |
348 // we haven't sorted types by signatures. But we can take | |
349 // advantage of comparing symbols instead of name. In the worst | |
350 // case, we will be comparing N addresses rather than N strings | |
351 // where N being total no. of classes in allClasses() list. | |
352 | |
353 // The signature could be Lx/y/z; or [.... | |
354 // If it is Lx/y/z; the internal type name is x/y/x | |
355 // for array klasses internal type name is same as | |
356 // signature | |
357 String typeName = null; | |
358 if (signature.charAt(0) == 'L') { | |
359 typeName = signature.substring(1, signature.length() - 1); | |
360 } else { | |
361 typeName = signature; | |
362 } | |
363 | |
364 Symbol typeNameSym = saSymbolTable().probe(typeName); | |
365 // if there is no symbol in VM, then we wouldn't have that type | |
366 if (typeNameSym == null) { | |
367 return new ArrayList(0); | |
368 } | |
369 | |
370 Iterator iter = typesBySignature.iterator(); | |
371 List list = new ArrayList(); | |
372 while (iter.hasNext()) { | |
373 // We have cached type name as symbol in reference type | |
374 ReferenceTypeImpl type = (ReferenceTypeImpl)iter.next(); | |
375 if (typeNameSym.equals(type.typeNameAsSymbol())) { | |
376 list.add(type); | |
377 } | |
378 } | |
379 return list; | |
380 } | |
381 | |
382 private void retrieveAllClasses() { | |
383 final List saKlasses = new ArrayList(); | |
384 SystemDictionary.ClassVisitor visitor = new SystemDictionary.ClassVisitor() { | |
385 public void visit(Klass k) { | |
386 for (Klass l = k; l != null; l = l.arrayKlassOrNull()) { | |
387 // for non-array classes filter out un-prepared classes | |
388 // refer to 'allClasses' in share/back/VirtualMachineImpl.c | |
389 if (l instanceof ArrayKlass) { | |
390 saKlasses.add(l); | |
391 } else { | |
392 int status = l.getClassStatus(); | |
393 if ((status & JVMDIClassStatus.PREPARED) != 0) { | |
394 saKlasses.add(l); | |
395 } | |
396 } | |
397 } | |
398 } | |
399 }; | |
400 | |
401 // refer to jvmtiGetLoadedClasses.cpp - getLoadedClasses in VM code. | |
402 | |
403 // classes from SystemDictionary | |
404 saSystemDictionary.classesDo(visitor); | |
405 | |
406 // From SystemDictionary we do not get primitive single | |
407 // dimensional array classes. add primitive single dimensional array | |
408 // klasses from Universe. | |
409 saVM.getUniverse().basicTypeClassesDo(visitor); | |
410 | |
411 // Hold lock during processing to improve performance | |
412 // and to have safe check/set of retrievedAllTypes | |
413 synchronized (this) { | |
414 if (!retrievedAllTypes) { | |
415 // Number of classes | |
416 int count = saKlasses.size(); | |
417 for (int ii = 0; ii < count; ii++) { | |
418 Klass kk = (Klass)saKlasses.get(ii); | |
419 ReferenceTypeImpl type = referenceType(kk); | |
420 } | |
421 retrievedAllTypes = true; | |
422 } | |
423 } | |
424 } | |
425 | |
426 ReferenceTypeImpl referenceType(Klass kk) { | |
427 ReferenceTypeImpl retType = null; | |
428 synchronized (this) { | |
429 if (typesByID != null) { | |
430 retType = (ReferenceTypeImpl)typesByID.get(kk); | |
431 } | |
432 if (retType == null) { | |
433 retType = addReferenceType(kk); | |
434 } | |
435 } | |
436 return retType; | |
437 } | |
438 | |
439 private void initReferenceTypes() { | |
440 typesByID = new HashMap(); | |
441 typesBySignature = new ArrayList(); | |
442 } | |
443 | |
444 private synchronized ReferenceTypeImpl addReferenceType(Klass kk) { | |
445 if (typesByID == null) { | |
446 initReferenceTypes(); | |
447 } | |
448 ReferenceTypeImpl newRefType = null; | |
449 if (kk instanceof ObjArrayKlass || kk instanceof TypeArrayKlass) { | |
450 newRefType = new ArrayTypeImpl(this, (ArrayKlass)kk); | |
451 } else if (kk instanceof InstanceKlass) { | |
452 if (kk.isInterface()) { | |
453 newRefType = new InterfaceTypeImpl(this, (InstanceKlass)kk); | |
454 } else { | |
455 newRefType = new ClassTypeImpl(this, (InstanceKlass)kk); | |
456 } | |
457 } else { | |
458 throw new RuntimeException("should not reach here"); | |
459 } | |
460 | |
461 typesByID.put(kk, newRefType); | |
462 typesBySignature.add(newRefType); | |
463 return newRefType; | |
464 } | |
465 | |
466 ThreadGroup threadGroupForJDI() { | |
467 return threadGroupForJDI; | |
468 } | |
469 | |
470 public void redefineClasses(Map classToBytes) { | |
471 throwNotReadOnlyException("VirtualMachineImpl.redefineClasses()"); | |
472 } | |
473 | |
474 private List getAllThreads() { | |
475 if (allThreads == null) { | |
476 allThreads = new ArrayList(10); // Might be enough, might not be | |
477 for (sun.jvm.hotspot.runtime.JavaThread thread = | |
478 saVM.getThreads().first(); thread != null; | |
479 thread = thread.next()) { | |
480 // refer to JvmtiEnv::GetAllThreads in jvmtiEnv.cpp. | |
481 // filter out the hidden-from-external-view threads. | |
482 if (thread.isHiddenFromExternalView() == false) { | |
483 ThreadReferenceImpl myThread = threadMirror(thread); | |
484 allThreads.add(myThread); | |
485 } | |
486 } | |
487 } | |
488 return allThreads; | |
489 } | |
490 | |
491 public List allThreads() { //fixme jjh | |
492 return Collections.unmodifiableList(getAllThreads()); | |
493 } | |
494 | |
495 public void suspend() { | |
496 throwNotReadOnlyException("VirtualMachineImpl.suspend()"); | |
497 } | |
498 | |
499 public void resume() { | |
500 throwNotReadOnlyException("VirtualMachineImpl.resume()"); | |
501 } | |
502 | |
503 public List topLevelThreadGroups() { //fixme jjh | |
504 // The doc for ThreadGroup says that The top-level thread group | |
505 // is the only thread group whose parent is null. This means there is | |
506 // only one top level thread group. There will be a thread in this | |
507 // group so we will just find a thread whose threadgroup has no parent | |
508 // and that will be it. | |
509 | |
510 if (topLevelGroups == null) { | |
511 topLevelGroups = new ArrayList(1); | |
512 Iterator myIt = getAllThreads().iterator(); | |
513 while (myIt.hasNext()) { | |
514 ThreadReferenceImpl myThread = (ThreadReferenceImpl)myIt.next(); | |
515 ThreadGroupReference myGroup = myThread.threadGroup(); | |
516 ThreadGroupReference myParent = myGroup.parent(); | |
517 if (myGroup.parent() == null) { | |
518 topLevelGroups.add(myGroup); | |
519 break; | |
520 } | |
521 } | |
522 } | |
523 return Collections.unmodifiableList(topLevelGroups); | |
524 } | |
525 | |
526 public EventQueue eventQueue() { | |
527 throwNotReadOnlyException("VirtualMachine.eventQueue()"); | |
528 return null; | |
529 } | |
530 | |
531 public EventRequestManager eventRequestManager() { | |
532 throwNotReadOnlyException("VirtualMachineImpl.eventRequestManager()"); | |
533 return null; | |
534 } | |
535 | |
536 public BooleanValue mirrorOf(boolean value) { | |
537 return new BooleanValueImpl(this,value); | |
538 } | |
539 | |
540 public ByteValue mirrorOf(byte value) { | |
541 return new ByteValueImpl(this,value); | |
542 } | |
543 | |
544 public CharValue mirrorOf(char value) { | |
545 return new CharValueImpl(this,value); | |
546 } | |
547 | |
548 public ShortValue mirrorOf(short value) { | |
549 return new ShortValueImpl(this,value); | |
550 } | |
551 | |
552 public IntegerValue mirrorOf(int value) { | |
553 return new IntegerValueImpl(this,value); | |
554 } | |
555 | |
556 public LongValue mirrorOf(long value) { | |
557 return new LongValueImpl(this,value); | |
558 } | |
559 | |
560 public FloatValue mirrorOf(float value) { | |
561 return new FloatValueImpl(this,value); | |
562 } | |
563 | |
564 public DoubleValue mirrorOf(double value) { | |
565 return new DoubleValueImpl(this,value); | |
566 } | |
567 | |
568 public StringReference mirrorOf(String value) { | |
569 throwNotReadOnlyException("VirtualMachinestop.mirrorOf(String)"); | |
570 return null; | |
571 } | |
572 | |
573 public VoidValue mirrorOfVoid() { | |
574 if (voidVal == null) { | |
575 voidVal = new VoidValueImpl(this); | |
576 } | |
577 return voidVal; | |
578 } | |
579 | |
580 | |
581 public Process process() { | |
582 throwNotReadOnlyException("VirtualMachine.process"); | |
583 return null; | |
584 } | |
585 | |
586 // dispose observer for Class re-use. refer to ConnectorImpl. | |
587 private Observer disposeObserver; | |
588 | |
589 // ConnectorImpl loaded by a different class loader can not access it. | |
590 // i.e., runtime package of <ConnectorImpl, L1> is not the same that of | |
591 // <VirtualMachineImpl, L2> when L1 != L2. So, package private method | |
592 // can be called reflectively after using setAccessible(true). | |
593 | |
594 void setDisposeObserver(Observer observer) { | |
595 disposeObserver = observer; | |
596 } | |
597 | |
598 private void notifyDispose() { | |
599 if (Assert.ASSERTS_ENABLED) { | |
600 Assert.that(disposeObserver != null, "null VM.dispose observer"); | |
601 } | |
602 disposeObserver.update(null, null); | |
603 } | |
604 | |
605 public void dispose() { | |
606 saAgent.detach(); | |
607 notifyDispose(); | |
608 } | |
609 | |
610 public void exit(int exitCode) { | |
611 throwNotReadOnlyException("VirtualMachine.exit(int)"); | |
612 } | |
613 | |
614 public boolean canBeModified() { | |
615 return false; | |
616 } | |
617 | |
618 public boolean canWatchFieldModification() { | |
619 return false; | |
620 } | |
621 | |
622 public boolean canWatchFieldAccess() { | |
623 return false; | |
624 } | |
625 | |
626 public boolean canGetBytecodes() { | |
627 return true; | |
628 } | |
629 | |
630 public boolean canGetSyntheticAttribute() { | |
631 return true; | |
632 } | |
633 | |
634 // FIXME: For now, all monitor capabilities are disabled | |
635 public boolean canGetOwnedMonitorInfo() { | |
636 return false; | |
637 } | |
638 | |
639 public boolean canGetCurrentContendedMonitor() { | |
640 return false; | |
641 } | |
642 | |
643 public boolean canGetMonitorInfo() { | |
644 return false; | |
645 } | |
646 | |
647 // because this SA works only with 1.5 and update releases | |
648 // this should always succeed unlike JVMDI/JDI. | |
649 public boolean canGet1_5LanguageFeatures() { | |
650 return true; | |
651 } | |
652 | |
653 public boolean canUseInstanceFilters() { | |
654 return false; | |
655 } | |
656 | |
657 public boolean canRedefineClasses() { | |
658 return false; | |
659 } | |
660 | |
661 public boolean canAddMethod() { | |
662 return false; | |
663 } | |
664 | |
665 public boolean canUnrestrictedlyRedefineClasses() { | |
666 return false; | |
667 } | |
668 | |
669 public boolean canPopFrames() { | |
670 return false; | |
671 } | |
672 | |
673 public boolean canGetSourceDebugExtension() { | |
674 // We can use InstanceKlass.getSourceDebugExtension only if | |
675 // ClassFileParser parsed the info. But, ClassFileParser parses | |
676 // SourceDebugExtension attribute only if corresponding JVMDI/TI | |
677 // capability is set to true. Currently, vmStructs does not expose | |
678 // JVMDI/TI capabilities and hence we conservatively assume false. | |
679 return false; | |
680 } | |
681 | |
682 public boolean canRequestVMDeathEvent() { | |
683 return false; | |
684 } | |
685 | |
686 // new method since 1.6 | |
687 public boolean canForceEarlyReturn() { | |
688 return false; | |
689 } | |
690 | |
691 // new method since 1.6 | |
692 public boolean canGetConstantPool() { | |
693 return true; | |
694 } | |
695 | |
696 // new method since 1.6 | |
697 public boolean canGetClassFileVersion() { | |
698 return true; | |
699 } | |
700 | |
701 // new method since 1.6. | |
702 public boolean canGetMethodReturnValues() { | |
703 return false; | |
704 } | |
705 | |
706 // new method since 1.6 | |
707 // Real body will be supplied later. | |
708 public boolean canGetInstanceInfo() { | |
709 return true; | |
710 } | |
711 | |
712 // new method since 1.6 | |
713 public boolean canUseSourceNameFilters() { | |
714 return false; | |
715 } | |
716 | |
717 // new method since 1.6. | |
718 public boolean canRequestMonitorEvents() { | |
719 return false; | |
720 } | |
721 | |
722 // new method since 1.6. | |
723 public boolean canGetMonitorFrameInfo() { | |
724 return true; | |
725 } | |
726 | |
727 // new method since 1.6 | |
728 // Real body will be supplied later. | |
729 public long[] instanceCounts(List classes) { | |
730 if (!canGetInstanceInfo()) { | |
731 throw new UnsupportedOperationException( | |
732 "target does not support getting instances"); | |
733 } | |
734 | |
735 final long[] retValue = new long[classes.size()] ; | |
736 | |
737 final Klass [] klassArray = new Klass[classes.size()]; | |
738 | |
739 boolean allAbstractClasses = true; | |
740 for (int i=0; i < classes.size(); i++) { | |
741 ReferenceTypeImpl rti = (ReferenceTypeImpl)classes.get(i); | |
742 klassArray[i] = rti.ref(); | |
743 retValue[i]=0; | |
744 if (!(rti.isAbstract() || ((ReferenceType)rti instanceof InterfaceType))) { | |
745 allAbstractClasses = false; | |
746 } | |
747 } | |
748 | |
749 if (allAbstractClasses) { | |
750 return retValue; | |
751 } | |
752 final int size = classes.size(); | |
753 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
754 public boolean doObj(Oop oop) { | |
755 for (int i=0; i < size; i++) { | |
756 if (klassArray[i].equals(oop.getKlass())) { | |
757 retValue[i]++; | |
758 break; | |
759 } | |
760 } | |
761 return false; | |
762 } | |
763 }); | |
764 | |
765 return retValue; | |
766 } | |
767 | |
768 private List getPath (String pathName) { | |
769 String cp = saVM.getSystemProperty(pathName); | |
770 String pathSep = saVM.getSystemProperty("path.separator"); | |
771 ArrayList al = new ArrayList(); | |
772 StringTokenizer st = new StringTokenizer(cp, pathSep); | |
773 while (st.hasMoreTokens()) { | |
774 al.add(st.nextToken()); | |
775 } | |
776 al.trimToSize(); | |
777 return al; | |
778 } | |
779 | |
780 public List classPath() { | |
781 return getPath("java.class.path"); | |
782 } | |
783 | |
784 public List bootClassPath() { | |
785 return getPath("sun.boot.class.path"); | |
786 } | |
787 | |
788 public String baseDirectory() { | |
789 return saVM.getSystemProperty("user.dir"); | |
790 } | |
791 | |
792 public void setDefaultStratum(String stratum) { | |
793 defaultStratum = stratum; | |
794 } | |
795 | |
796 public String getDefaultStratum() { | |
797 return defaultStratum; | |
798 } | |
799 | |
800 public String description() { | |
801 String[] versionParts = {"" + vmmgr.majorInterfaceVersion(), | |
802 "" + vmmgr.minorInterfaceVersion(), | |
803 name()}; | |
804 return java.text.MessageFormat.format(java.util.ResourceBundle. | |
805 getBundle("com.sun.tools.jdi.resources.jdi").getString("version_format"), | |
806 versionParts); | |
807 } | |
808 | |
809 public String version() { | |
810 return saVM.getSystemProperty("java.version"); | |
811 } | |
812 | |
813 public String name() { | |
814 StringBuffer sb = new StringBuffer(); | |
815 sb.append("JVM version "); | |
816 sb.append(version()); | |
817 sb.append(" ("); | |
818 sb.append(saVM.getSystemProperty("java.vm.name")); | |
819 sb.append(", "); | |
820 sb.append(saVM.getSystemProperty("java.vm.info")); | |
821 sb.append(")"); | |
822 return sb.toString(); | |
823 } | |
824 | |
825 // from interface Mirror | |
826 public VirtualMachine virtualMachine() { | |
827 return this; | |
828 } | |
829 | |
830 public String toString() { | |
831 return name(); | |
832 } | |
833 | |
834 public void setDebugTraceMode(int traceFlags) { | |
835 // spec. says output is implementation dependent | |
836 // and trace mode may be ignored. we ignore it :-) | |
837 } | |
838 | |
839 // heap walking API | |
840 | |
841 // capability check | |
842 public boolean canWalkHeap() { | |
843 return true; | |
844 } | |
845 | |
846 // return a list of all objects in heap | |
847 public List/*<ObjectReference>*/ allObjects() { | |
848 final List objects = new ArrayList(0); | |
849 saObjectHeap.iterate( | |
850 new DefaultHeapVisitor() { | |
851 public boolean doObj(Oop oop) { | |
852 objects.add(objectMirror(oop)); | |
853 return false; | |
854 } | |
855 }); | |
856 return objects; | |
857 } | |
858 | |
859 // equivalent to objectsByType(type, true) | |
860 public List/*<ObjectReference>*/ objectsByType(ReferenceType type) { | |
861 return objectsByType(type, true); | |
862 } | |
863 | |
864 // returns objects of type exactly equal to given type | |
865 private List/*<ObjectReference>*/ objectsByExactType(ReferenceType type) { | |
866 final List objects = new ArrayList(0); | |
867 final Klass givenKls = ((ReferenceTypeImpl)type).ref(); | |
868 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
869 public boolean doObj(Oop oop) { | |
870 if (givenKls.equals(oop.getKlass())) { | |
871 objects.add(objectMirror(oop)); | |
872 } | |
873 return false; | |
874 } | |
875 }); | |
876 return objects; | |
877 } | |
878 | |
879 // returns objects of given type as well as it's subtypes | |
880 private List/*<ObjectReference>*/ objectsBySubType(ReferenceType type) { | |
881 final List objects = new ArrayList(0); | |
882 final ReferenceType givenType = type; | |
883 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
884 public boolean doObj(Oop oop) { | |
885 ReferenceTypeImpl curType = (ReferenceTypeImpl) referenceType(oop.getKlass()); | |
886 if (curType.isAssignableTo(givenType)) { | |
887 objects.add(objectMirror(oop)); | |
888 } | |
889 return false; | |
890 } | |
891 }); | |
892 return objects; | |
893 } | |
894 | |
895 // includeSubtypes - do you want to include subclass/subtype instances of given | |
896 // ReferenceType or do we want objects of exact type only? | |
897 public List/*<ObjectReference>*/ objectsByType(ReferenceType type, boolean includeSubtypes) { | |
898 Klass kls = ((ReferenceTypeImpl)type).ref(); | |
899 if (kls instanceof InstanceKlass) { | |
900 InstanceKlass ik = (InstanceKlass) kls; | |
901 if (ik.isInterface()) { | |
902 if (ik.nofImplementors() == 0L) { | |
903 return new ArrayList(0); | |
904 } | |
905 } else { | |
906 // if the Klass is final or if there are no subklasses loaded yet | |
907 if (ik.getAccessFlagsObj().isFinal() || ik.getSubklassKlass() == null) { | |
908 includeSubtypes = false; | |
909 } | |
910 } | |
911 } else { | |
912 // no subtypes for primitive array types | |
913 ArrayTypeImpl arrayType = (ArrayTypeImpl) type; | |
914 try { | |
915 Type componentType = arrayType.componentType(); | |
916 if (componentType instanceof PrimitiveType) { | |
917 includeSubtypes = false; | |
918 } | |
919 } catch (ClassNotLoadedException cnle) { | |
920 // ignore. component type not yet loaded | |
921 } | |
922 } | |
923 | |
924 if (includeSubtypes) { | |
925 return objectsBySubType(type); | |
926 } else { | |
927 return objectsByExactType(type); | |
928 } | |
929 } | |
930 | |
931 Type findBootType(String signature) throws ClassNotLoadedException { | |
932 List types = allClasses(); | |
933 Iterator iter = types.iterator(); | |
934 while (iter.hasNext()) { | |
935 ReferenceType type = (ReferenceType)iter.next(); | |
936 if ((type.classLoader() == null) && | |
937 (type.signature().equals(signature))) { | |
938 return type; | |
939 } | |
940 } | |
941 JNITypeParser parser = new JNITypeParser(signature); | |
942 throw new ClassNotLoadedException(parser.typeName(), | |
943 "Type " + parser.typeName() + " not loaded"); | |
944 } | |
945 | |
946 BooleanType theBooleanType() { | |
947 if (theBooleanType == null) { | |
948 synchronized(this) { | |
949 if (theBooleanType == null) { | |
950 theBooleanType = new BooleanTypeImpl(this); | |
951 } | |
952 } | |
953 } | |
954 return theBooleanType; | |
955 } | |
956 | |
957 ByteType theByteType() { | |
958 if (theByteType == null) { | |
959 synchronized(this) { | |
960 if (theByteType == null) { | |
961 theByteType = new ByteTypeImpl(this); | |
962 } | |
963 } | |
964 } | |
965 return theByteType; | |
966 } | |
967 | |
968 CharType theCharType() { | |
969 if (theCharType == null) { | |
970 synchronized(this) { | |
971 if (theCharType == null) { | |
972 theCharType = new CharTypeImpl(this); | |
973 } | |
974 } | |
975 } | |
976 return theCharType; | |
977 } | |
978 | |
979 ShortType theShortType() { | |
980 if (theShortType == null) { | |
981 synchronized(this) { | |
982 if (theShortType == null) { | |
983 theShortType = new ShortTypeImpl(this); | |
984 } | |
985 } | |
986 } | |
987 return theShortType; | |
988 } | |
989 | |
990 IntegerType theIntegerType() { | |
991 if (theIntegerType == null) { | |
992 synchronized(this) { | |
993 if (theIntegerType == null) { | |
994 theIntegerType = new IntegerTypeImpl(this); | |
995 } | |
996 } | |
997 } | |
998 return theIntegerType; | |
999 } | |
1000 | |
1001 LongType theLongType() { | |
1002 if (theLongType == null) { | |
1003 synchronized(this) { | |
1004 if (theLongType == null) { | |
1005 theLongType = new LongTypeImpl(this); | |
1006 } | |
1007 } | |
1008 } | |
1009 return theLongType; | |
1010 } | |
1011 | |
1012 FloatType theFloatType() { | |
1013 if (theFloatType == null) { | |
1014 synchronized(this) { | |
1015 if (theFloatType == null) { | |
1016 theFloatType = new FloatTypeImpl(this); | |
1017 } | |
1018 } | |
1019 } | |
1020 return theFloatType; | |
1021 } | |
1022 | |
1023 DoubleType theDoubleType() { | |
1024 if (theDoubleType == null) { | |
1025 synchronized(this) { | |
1026 if (theDoubleType == null) { | |
1027 theDoubleType = new DoubleTypeImpl(this); | |
1028 } | |
1029 } | |
1030 } | |
1031 return theDoubleType; | |
1032 } | |
1033 | |
1034 VoidType theVoidType() { | |
1035 if (theVoidType == null) { | |
1036 synchronized(this) { | |
1037 if (theVoidType == null) { | |
1038 theVoidType = new VoidTypeImpl(this); | |
1039 } | |
1040 } | |
1041 } | |
1042 return theVoidType; | |
1043 } | |
1044 | |
1045 PrimitiveType primitiveTypeMirror(char tag) { | |
1046 switch (tag) { | |
1047 case 'Z': | |
1048 return theBooleanType(); | |
1049 case 'B': | |
1050 return theByteType(); | |
1051 case 'C': | |
1052 return theCharType(); | |
1053 case 'S': | |
1054 return theShortType(); | |
1055 case 'I': | |
1056 return theIntegerType(); | |
1057 case 'J': | |
1058 return theLongType(); | |
1059 case 'F': | |
1060 return theFloatType(); | |
1061 case 'D': | |
1062 return theDoubleType(); | |
1063 default: | |
1064 throw new IllegalArgumentException("Unrecognized primitive tag " + tag); | |
1065 } | |
1066 } | |
1067 | |
1068 private void processQueue() { | |
1069 Reference ref; | |
1070 while ((ref = referenceQueue.poll()) != null) { | |
1071 SoftObjectReference softRef = (SoftObjectReference)ref; | |
1072 removeObjectMirror(softRef); | |
1073 } | |
1074 } | |
1075 | |
1076 // Address value is used as uniqueID by ObjectReferenceImpl | |
1077 long getAddressValue(Oop obj) { | |
1078 return vm.saVM.getDebugger().getAddressValue(obj.getHandle()); | |
1079 } | |
1080 | |
1081 synchronized ObjectReferenceImpl objectMirror(Oop key) { | |
1082 | |
1083 // Handle any queue elements that are not strongly reachable | |
1084 processQueue(); | |
1085 | |
1086 if (key == null) { | |
1087 return null; | |
1088 } | |
1089 ObjectReferenceImpl object = null; | |
1090 | |
1091 /* | |
1092 * Attempt to retrieve an existing object object reference | |
1093 */ | |
1094 SoftObjectReference ref = (SoftObjectReference)objectsByID.get(key); | |
1095 if (ref != null) { | |
1096 object = ref.object(); | |
1097 } | |
1098 | |
1099 /* | |
1100 * If the object wasn't in the table, or it's soft reference was | |
1101 * cleared, create a new instance. | |
1102 */ | |
1103 if (object == null) { | |
1104 if (key instanceof Instance) { | |
1105 // look for well-known classes | |
1106 Symbol className = key.getKlass().getName(); | |
1107 if (Assert.ASSERTS_ENABLED) { | |
1108 Assert.that(className != null, "Null class name"); | |
1109 } | |
1110 Instance inst = (Instance) key; | |
1111 if (className.equals(javaLangString)) { | |
1112 object = new StringReferenceImpl(this, inst); | |
1113 } else if (className.equals(javaLangThread)) { | |
1114 object = new ThreadReferenceImpl(this, inst); | |
1115 } else if (className.equals(javaLangThreadGroup)) { | |
1116 object = new ThreadGroupReferenceImpl(this, inst); | |
1117 } else if (className.equals(javaLangClass)) { | |
1118 object = new ClassObjectReferenceImpl(this, inst); | |
1119 } else if (className.equals(javaLangClassLoader)) { | |
1120 object = new ClassLoaderReferenceImpl(this, inst); | |
1121 } else { | |
1122 // not a well-known class. But the base class may be | |
1123 // one of the known classes. | |
1124 Klass kls = key.getKlass().getSuper(); | |
1125 while (kls != null) { | |
1126 className = kls.getName(); | |
1127 // java.lang.Class and java.lang.String are final classes | |
1128 if (className.equals(javaLangThread)) { | |
1129 object = new ThreadReferenceImpl(this, inst); | |
1130 break; | |
1131 } else if(className.equals(javaLangThreadGroup)) { | |
1132 object = new ThreadGroupReferenceImpl(this, inst); | |
1133 break; | |
1134 } else if (className.equals(javaLangClassLoader)) { | |
1135 object = new ClassLoaderReferenceImpl(this, inst); | |
1136 break; | |
1137 } | |
1138 kls = kls.getSuper(); | |
1139 } | |
1140 | |
1141 if (object == null) { | |
1142 // create generic object reference | |
1143 object = new ObjectReferenceImpl(this, inst); | |
1144 } | |
1145 } | |
1146 } else if (key instanceof TypeArray) { | |
1147 object = new ArrayReferenceImpl(this, (Array) key); | |
1148 } else if (key instanceof ObjArray) { | |
1149 object = new ArrayReferenceImpl(this, (Array) key); | |
1150 } else { | |
1151 throw new RuntimeException("unexpected object type " + key); | |
1152 } | |
1153 ref = new SoftObjectReference(key, object, referenceQueue); | |
1154 | |
1155 /* | |
1156 * If there was no previous entry in the table, we add one here | |
1157 * If the previous entry was cleared, we replace it here. | |
1158 */ | |
1159 objectsByID.put(key, ref); | |
1160 } else { | |
1161 ref.incrementCount(); | |
1162 } | |
1163 | |
1164 return object; | |
1165 } | |
1166 | |
1167 synchronized void removeObjectMirror(SoftObjectReference ref) { | |
1168 /* | |
1169 * This will remove the soft reference if it has not been | |
1170 * replaced in the cache. | |
1171 */ | |
1172 objectsByID.remove(ref.key()); | |
1173 } | |
1174 | |
1175 StringReferenceImpl stringMirror(Instance id) { | |
1176 return (StringReferenceImpl) objectMirror(id); | |
1177 } | |
1178 | |
1179 ArrayReferenceImpl arrayMirror(Array id) { | |
1180 return (ArrayReferenceImpl) objectMirror(id); | |
1181 } | |
1182 | |
1183 ThreadReferenceImpl threadMirror(Instance id) { | |
1184 return (ThreadReferenceImpl) objectMirror(id); | |
1185 } | |
1186 | |
1187 ThreadReferenceImpl threadMirror(JavaThread jt) { | |
1188 return (ThreadReferenceImpl) objectMirror(jt.getThreadObj()); | |
1189 } | |
1190 | |
1191 ThreadGroupReferenceImpl threadGroupMirror(Instance id) { | |
1192 return (ThreadGroupReferenceImpl) objectMirror(id); | |
1193 } | |
1194 | |
1195 ClassLoaderReferenceImpl classLoaderMirror(Instance id) { | |
1196 return (ClassLoaderReferenceImpl) objectMirror(id); | |
1197 } | |
1198 | |
1199 ClassObjectReferenceImpl classObjectMirror(Instance id) { | |
1200 return (ClassObjectReferenceImpl) objectMirror(id); | |
1201 } | |
1202 | |
1203 // Use of soft refs and caching stuff here has to be re-examined. | |
1204 // It might not make sense for JDI - SA. | |
1205 static private class SoftObjectReference extends SoftReference { | |
1206 int count; | |
1207 Object key; | |
1208 | |
1209 SoftObjectReference(Object key, ObjectReferenceImpl mirror, | |
1210 ReferenceQueue queue) { | |
1211 super(mirror, queue); | |
1212 this.count = 1; | |
1213 this.key = key; | |
1214 } | |
1215 | |
1216 int count() { | |
1217 return count; | |
1218 } | |
1219 | |
1220 void incrementCount() { | |
1221 count++; | |
1222 } | |
1223 | |
1224 Object key() { | |
1225 return key; | |
1226 } | |
1227 | |
1228 ObjectReferenceImpl object() { | |
1229 return (ObjectReferenceImpl)get(); | |
1230 } | |
1231 } | |
1232 } |