Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/jdi/VirtualMachineImpl.java @ 6782:5a98bf7d847b
6879063: SA should use hsdis for disassembly
Summary: We should in SA to use hsdis for it like the JVM does to replace the current java based disassembler.
Reviewed-by: twisti, jrose, sla
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Mon, 24 Sep 2012 12:44:00 -0700 |
| parents | da91efe96a93 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
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diff
changeset
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2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
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diff
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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
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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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); | |
| 6782 | 266 |
| 267 // By default SA agent classes prefer Windows process debugger | |
| 268 // to windbg debugger. SA expects special properties to be set | |
| 269 // to choose other debuggers. We will set those here before | |
| 270 // attaching to SA agent. | |
| 271 | |
| 272 System.setProperty("sun.jvm.hotspot.debugger.useWindbgDebugger", "true"); | |
| 0 | 273 } |
| 274 | |
| 275 // we reflectively use newly spec'ed class because our ALT_BOOTDIR | |
| 276 // is 1.4.2 and not 1.5. | |
| 277 private static Class vmCannotBeModifiedExceptionClass = null; | |
| 278 void throwNotReadOnlyException(String operation) { | |
| 279 RuntimeException re = null; | |
| 280 if (vmCannotBeModifiedExceptionClass == null) { | |
| 281 try { | |
| 282 vmCannotBeModifiedExceptionClass = Class.forName("com.sun.jdi.VMCannotBeModifiedException"); | |
| 283 } catch (ClassNotFoundException cnfe) { | |
| 284 vmCannotBeModifiedExceptionClass = UnsupportedOperationException.class; | |
| 285 } | |
| 286 } | |
| 287 try { | |
| 288 re = (RuntimeException) vmCannotBeModifiedExceptionClass.newInstance(); | |
| 289 } catch (Exception exp) { | |
| 290 re = new RuntimeException(exp.getMessage()); | |
| 291 } | |
| 292 throw re; | |
| 293 } | |
| 294 | |
| 295 public boolean equals(Object obj) { | |
| 296 // Oh boy; big recursion troubles if we don't have this! | |
| 297 // See MirrorImpl.equals | |
| 298 return this == obj; | |
| 299 } | |
| 300 | |
| 301 public int hashCode() { | |
| 302 // big recursion if we don't have this. See MirrorImpl.hashCode | |
| 303 return System.identityHashCode(this); | |
| 304 } | |
| 305 | |
| 306 public List classesByName(String className) { | |
| 307 String signature = JNITypeParser.typeNameToSignature(className); | |
| 308 List list; | |
| 309 if (!retrievedAllTypes) { | |
| 310 retrieveAllClasses(); | |
| 311 } | |
| 312 list = findReferenceTypes(signature); | |
| 313 return Collections.unmodifiableList(list); | |
| 314 } | |
| 315 | |
| 316 public List allClasses() { | |
| 317 if (!retrievedAllTypes) { | |
| 318 retrieveAllClasses(); | |
| 319 } | |
| 320 ArrayList a; | |
| 321 synchronized (this) { | |
| 322 a = new ArrayList(typesBySignature); | |
| 323 } | |
| 324 return Collections.unmodifiableList(a); | |
| 325 } | |
| 326 | |
| 327 // classes loaded by bootstrap loader | |
| 328 List bootstrapClasses() { | |
| 329 if (bootstrapClasses == null) { | |
| 330 bootstrapClasses = new ArrayList(); | |
| 331 List all = allClasses(); | |
| 332 for (Iterator itr = all.iterator(); itr.hasNext();) { | |
| 333 ReferenceType type = (ReferenceType) itr.next(); | |
| 334 if (type.classLoader() == null) { | |
| 335 bootstrapClasses.add(type); | |
| 336 } | |
| 337 } | |
| 338 } | |
| 339 return bootstrapClasses; | |
| 340 } | |
| 341 | |
| 342 private synchronized List findReferenceTypes(String signature) { | |
| 343 if (typesByID == null) { | |
| 344 return new ArrayList(0); | |
| 345 } | |
| 346 | |
| 347 // we haven't sorted types by signatures. But we can take | |
| 348 // advantage of comparing symbols instead of name. In the worst | |
| 349 // case, we will be comparing N addresses rather than N strings | |
| 350 // where N being total no. of classes in allClasses() list. | |
| 351 | |
| 352 // The signature could be Lx/y/z; or [.... | |
| 353 // If it is Lx/y/z; the internal type name is x/y/x | |
| 354 // for array klasses internal type name is same as | |
| 355 // signature | |
| 356 String typeName = null; | |
| 357 if (signature.charAt(0) == 'L') { | |
| 358 typeName = signature.substring(1, signature.length() - 1); | |
| 359 } else { | |
| 360 typeName = signature; | |
| 361 } | |
| 362 | |
| 363 Symbol typeNameSym = saSymbolTable().probe(typeName); | |
| 364 // if there is no symbol in VM, then we wouldn't have that type | |
| 365 if (typeNameSym == null) { | |
| 366 return new ArrayList(0); | |
| 367 } | |
| 368 | |
| 369 Iterator iter = typesBySignature.iterator(); | |
| 370 List list = new ArrayList(); | |
| 371 while (iter.hasNext()) { | |
| 372 // We have cached type name as symbol in reference type | |
| 373 ReferenceTypeImpl type = (ReferenceTypeImpl)iter.next(); | |
| 374 if (typeNameSym.equals(type.typeNameAsSymbol())) { | |
| 375 list.add(type); | |
| 376 } | |
| 377 } | |
| 378 return list; | |
| 379 } | |
| 380 | |
| 381 private void retrieveAllClasses() { | |
| 382 final List saKlasses = new ArrayList(); | |
| 383 SystemDictionary.ClassVisitor visitor = new SystemDictionary.ClassVisitor() { | |
| 384 public void visit(Klass k) { | |
| 385 for (Klass l = k; l != null; l = l.arrayKlassOrNull()) { | |
| 386 // for non-array classes filter out un-prepared classes | |
| 387 // refer to 'allClasses' in share/back/VirtualMachineImpl.c | |
| 388 if (l instanceof ArrayKlass) { | |
| 389 saKlasses.add(l); | |
| 390 } else { | |
| 391 int status = l.getClassStatus(); | |
| 392 if ((status & JVMDIClassStatus.PREPARED) != 0) { | |
| 393 saKlasses.add(l); | |
| 394 } | |
| 395 } | |
| 396 } | |
| 397 } | |
| 398 }; | |
| 399 | |
| 400 // refer to jvmtiGetLoadedClasses.cpp - getLoadedClasses in VM code. | |
| 401 | |
| 402 // classes from SystemDictionary | |
| 403 saSystemDictionary.classesDo(visitor); | |
| 404 | |
| 405 // From SystemDictionary we do not get primitive single | |
| 406 // dimensional array classes. add primitive single dimensional array | |
| 407 // klasses from Universe. | |
| 408 saVM.getUniverse().basicTypeClassesDo(visitor); | |
| 409 | |
| 410 // Hold lock during processing to improve performance | |
| 411 // and to have safe check/set of retrievedAllTypes | |
| 412 synchronized (this) { | |
| 413 if (!retrievedAllTypes) { | |
| 414 // Number of classes | |
| 415 int count = saKlasses.size(); | |
| 416 for (int ii = 0; ii < count; ii++) { | |
| 417 Klass kk = (Klass)saKlasses.get(ii); | |
| 418 ReferenceTypeImpl type = referenceType(kk); | |
| 419 } | |
| 420 retrievedAllTypes = true; | |
| 421 } | |
| 422 } | |
| 423 } | |
| 424 | |
| 425 ReferenceTypeImpl referenceType(Klass kk) { | |
| 426 ReferenceTypeImpl retType = null; | |
| 427 synchronized (this) { | |
| 428 if (typesByID != null) { | |
| 429 retType = (ReferenceTypeImpl)typesByID.get(kk); | |
| 430 } | |
| 431 if (retType == null) { | |
| 432 retType = addReferenceType(kk); | |
| 433 } | |
| 434 } | |
| 435 return retType; | |
| 436 } | |
| 437 | |
| 438 private void initReferenceTypes() { | |
| 439 typesByID = new HashMap(); | |
| 440 typesBySignature = new ArrayList(); | |
| 441 } | |
| 442 | |
| 443 private synchronized ReferenceTypeImpl addReferenceType(Klass kk) { | |
| 444 if (typesByID == null) { | |
| 445 initReferenceTypes(); | |
| 446 } | |
| 447 ReferenceTypeImpl newRefType = null; | |
| 448 if (kk instanceof ObjArrayKlass || kk instanceof TypeArrayKlass) { | |
| 449 newRefType = new ArrayTypeImpl(this, (ArrayKlass)kk); | |
| 450 } else if (kk instanceof InstanceKlass) { | |
| 451 if (kk.isInterface()) { | |
| 452 newRefType = new InterfaceTypeImpl(this, (InstanceKlass)kk); | |
| 453 } else { | |
| 454 newRefType = new ClassTypeImpl(this, (InstanceKlass)kk); | |
| 455 } | |
| 456 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
5998
diff
changeset
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457 throw new RuntimeException("should not reach here:" + kk); |
| 0 | 458 } |
| 459 | |
| 460 typesByID.put(kk, newRefType); | |
| 461 typesBySignature.add(newRefType); | |
| 462 return newRefType; | |
| 463 } | |
| 464 | |
| 465 ThreadGroup threadGroupForJDI() { | |
| 466 return threadGroupForJDI; | |
| 467 } | |
| 468 | |
| 469 public void redefineClasses(Map classToBytes) { | |
| 470 throwNotReadOnlyException("VirtualMachineImpl.redefineClasses()"); | |
| 471 } | |
| 472 | |
| 473 private List getAllThreads() { | |
| 474 if (allThreads == null) { | |
| 475 allThreads = new ArrayList(10); // Might be enough, might not be | |
| 476 for (sun.jvm.hotspot.runtime.JavaThread thread = | |
| 477 saVM.getThreads().first(); thread != null; | |
| 478 thread = thread.next()) { | |
| 479 // refer to JvmtiEnv::GetAllThreads in jvmtiEnv.cpp. | |
| 480 // filter out the hidden-from-external-view threads. | |
| 481 if (thread.isHiddenFromExternalView() == false) { | |
| 482 ThreadReferenceImpl myThread = threadMirror(thread); | |
| 483 allThreads.add(myThread); | |
| 484 } | |
| 485 } | |
| 486 } | |
| 487 return allThreads; | |
| 488 } | |
| 489 | |
| 490 public List allThreads() { //fixme jjh | |
| 491 return Collections.unmodifiableList(getAllThreads()); | |
| 492 } | |
| 493 | |
| 494 public void suspend() { | |
| 495 throwNotReadOnlyException("VirtualMachineImpl.suspend()"); | |
| 496 } | |
| 497 | |
| 498 public void resume() { | |
| 499 throwNotReadOnlyException("VirtualMachineImpl.resume()"); | |
| 500 } | |
| 501 | |
| 502 public List topLevelThreadGroups() { //fixme jjh | |
| 503 // The doc for ThreadGroup says that The top-level thread group | |
| 504 // is the only thread group whose parent is null. This means there is | |
| 505 // only one top level thread group. There will be a thread in this | |
| 506 // group so we will just find a thread whose threadgroup has no parent | |
| 507 // and that will be it. | |
| 508 | |
| 509 if (topLevelGroups == null) { | |
| 510 topLevelGroups = new ArrayList(1); | |
| 511 Iterator myIt = getAllThreads().iterator(); | |
| 512 while (myIt.hasNext()) { | |
| 513 ThreadReferenceImpl myThread = (ThreadReferenceImpl)myIt.next(); | |
| 514 ThreadGroupReference myGroup = myThread.threadGroup(); | |
| 515 ThreadGroupReference myParent = myGroup.parent(); | |
| 516 if (myGroup.parent() == null) { | |
| 517 topLevelGroups.add(myGroup); | |
| 518 break; | |
| 519 } | |
| 520 } | |
| 521 } | |
| 522 return Collections.unmodifiableList(topLevelGroups); | |
| 523 } | |
| 524 | |
| 525 public EventQueue eventQueue() { | |
| 526 throwNotReadOnlyException("VirtualMachine.eventQueue()"); | |
| 527 return null; | |
| 528 } | |
| 529 | |
| 530 public EventRequestManager eventRequestManager() { | |
| 531 throwNotReadOnlyException("VirtualMachineImpl.eventRequestManager()"); | |
| 532 return null; | |
| 533 } | |
| 534 | |
| 535 public BooleanValue mirrorOf(boolean value) { | |
| 536 return new BooleanValueImpl(this,value); | |
| 537 } | |
| 538 | |
| 539 public ByteValue mirrorOf(byte value) { | |
| 540 return new ByteValueImpl(this,value); | |
| 541 } | |
| 542 | |
| 543 public CharValue mirrorOf(char value) { | |
| 544 return new CharValueImpl(this,value); | |
| 545 } | |
| 546 | |
| 547 public ShortValue mirrorOf(short value) { | |
| 548 return new ShortValueImpl(this,value); | |
| 549 } | |
| 550 | |
| 551 public IntegerValue mirrorOf(int value) { | |
| 552 return new IntegerValueImpl(this,value); | |
| 553 } | |
| 554 | |
| 555 public LongValue mirrorOf(long value) { | |
| 556 return new LongValueImpl(this,value); | |
| 557 } | |
| 558 | |
| 559 public FloatValue mirrorOf(float value) { | |
| 560 return new FloatValueImpl(this,value); | |
| 561 } | |
| 562 | |
| 563 public DoubleValue mirrorOf(double value) { | |
| 564 return new DoubleValueImpl(this,value); | |
| 565 } | |
| 566 | |
| 567 public StringReference mirrorOf(String value) { | |
| 568 throwNotReadOnlyException("VirtualMachinestop.mirrorOf(String)"); | |
| 569 return null; | |
| 570 } | |
| 571 | |
| 572 public VoidValue mirrorOfVoid() { | |
| 573 if (voidVal == null) { | |
| 574 voidVal = new VoidValueImpl(this); | |
| 575 } | |
| 576 return voidVal; | |
| 577 } | |
| 578 | |
| 579 | |
| 580 public Process process() { | |
| 581 throwNotReadOnlyException("VirtualMachine.process"); | |
| 582 return null; | |
| 583 } | |
| 584 | |
| 585 // dispose observer for Class re-use. refer to ConnectorImpl. | |
| 586 private Observer disposeObserver; | |
| 587 | |
| 588 // ConnectorImpl loaded by a different class loader can not access it. | |
| 589 // i.e., runtime package of <ConnectorImpl, L1> is not the same that of | |
| 590 // <VirtualMachineImpl, L2> when L1 != L2. So, package private method | |
| 591 // can be called reflectively after using setAccessible(true). | |
| 592 | |
| 593 void setDisposeObserver(Observer observer) { | |
| 594 disposeObserver = observer; | |
| 595 } | |
| 596 | |
| 597 private void notifyDispose() { | |
| 598 if (Assert.ASSERTS_ENABLED) { | |
| 599 Assert.that(disposeObserver != null, "null VM.dispose observer"); | |
| 600 } | |
| 601 disposeObserver.update(null, null); | |
| 602 } | |
| 603 | |
| 604 public void dispose() { | |
| 605 saAgent.detach(); | |
| 606 notifyDispose(); | |
| 607 } | |
| 608 | |
| 609 public void exit(int exitCode) { | |
| 610 throwNotReadOnlyException("VirtualMachine.exit(int)"); | |
| 611 } | |
| 612 | |
| 613 public boolean canBeModified() { | |
| 614 return false; | |
| 615 } | |
| 616 | |
| 617 public boolean canWatchFieldModification() { | |
| 618 return false; | |
| 619 } | |
| 620 | |
| 621 public boolean canWatchFieldAccess() { | |
| 622 return false; | |
| 623 } | |
| 624 | |
| 625 public boolean canGetBytecodes() { | |
| 626 return true; | |
| 627 } | |
| 628 | |
| 629 public boolean canGetSyntheticAttribute() { | |
| 630 return true; | |
| 631 } | |
| 632 | |
| 633 // FIXME: For now, all monitor capabilities are disabled | |
| 634 public boolean canGetOwnedMonitorInfo() { | |
| 635 return false; | |
| 636 } | |
| 637 | |
| 638 public boolean canGetCurrentContendedMonitor() { | |
| 639 return false; | |
| 640 } | |
| 641 | |
| 642 public boolean canGetMonitorInfo() { | |
| 643 return false; | |
| 644 } | |
| 645 | |
| 646 // because this SA works only with 1.5 and update releases | |
| 647 // this should always succeed unlike JVMDI/JDI. | |
| 648 public boolean canGet1_5LanguageFeatures() { | |
| 649 return true; | |
| 650 } | |
| 651 | |
| 652 public boolean canUseInstanceFilters() { | |
| 653 return false; | |
| 654 } | |
| 655 | |
| 656 public boolean canRedefineClasses() { | |
| 657 return false; | |
| 658 } | |
| 659 | |
| 660 public boolean canAddMethod() { | |
| 661 return false; | |
| 662 } | |
| 663 | |
| 664 public boolean canUnrestrictedlyRedefineClasses() { | |
| 665 return false; | |
| 666 } | |
| 667 | |
| 668 public boolean canPopFrames() { | |
| 669 return false; | |
| 670 } | |
| 671 | |
| 672 public boolean canGetSourceDebugExtension() { | |
| 673 // We can use InstanceKlass.getSourceDebugExtension only if | |
| 674 // ClassFileParser parsed the info. But, ClassFileParser parses | |
| 675 // SourceDebugExtension attribute only if corresponding JVMDI/TI | |
| 676 // capability is set to true. Currently, vmStructs does not expose | |
| 677 // JVMDI/TI capabilities and hence we conservatively assume false. | |
| 678 return false; | |
| 679 } | |
| 680 | |
| 681 public boolean canRequestVMDeathEvent() { | |
| 682 return false; | |
| 683 } | |
| 684 | |
| 685 // new method since 1.6 | |
| 686 public boolean canForceEarlyReturn() { | |
| 687 return false; | |
| 688 } | |
| 689 | |
| 690 // new method since 1.6 | |
| 691 public boolean canGetConstantPool() { | |
| 692 return true; | |
| 693 } | |
| 694 | |
| 695 // new method since 1.6 | |
| 696 public boolean canGetClassFileVersion() { | |
| 697 return true; | |
| 698 } | |
| 699 | |
| 700 // new method since 1.6. | |
| 701 public boolean canGetMethodReturnValues() { | |
| 702 return false; | |
| 703 } | |
| 704 | |
| 705 // new method since 1.6 | |
| 706 // Real body will be supplied later. | |
| 707 public boolean canGetInstanceInfo() { | |
| 708 return true; | |
| 709 } | |
| 710 | |
| 711 // new method since 1.6 | |
| 712 public boolean canUseSourceNameFilters() { | |
| 713 return false; | |
| 714 } | |
| 715 | |
| 716 // new method since 1.6. | |
| 717 public boolean canRequestMonitorEvents() { | |
| 718 return false; | |
| 719 } | |
| 720 | |
| 721 // new method since 1.6. | |
| 722 public boolean canGetMonitorFrameInfo() { | |
| 723 return true; | |
| 724 } | |
| 725 | |
| 726 // new method since 1.6 | |
| 727 // Real body will be supplied later. | |
| 728 public long[] instanceCounts(List classes) { | |
| 729 if (!canGetInstanceInfo()) { | |
| 730 throw new UnsupportedOperationException( | |
| 731 "target does not support getting instances"); | |
| 732 } | |
| 733 | |
| 734 final long[] retValue = new long[classes.size()] ; | |
| 735 | |
| 736 final Klass [] klassArray = new Klass[classes.size()]; | |
| 737 | |
| 738 boolean allAbstractClasses = true; | |
| 739 for (int i=0; i < classes.size(); i++) { | |
| 740 ReferenceTypeImpl rti = (ReferenceTypeImpl)classes.get(i); | |
| 741 klassArray[i] = rti.ref(); | |
| 742 retValue[i]=0; | |
| 743 if (!(rti.isAbstract() || ((ReferenceType)rti instanceof InterfaceType))) { | |
| 744 allAbstractClasses = false; | |
| 745 } | |
| 746 } | |
| 747 | |
| 748 if (allAbstractClasses) { | |
| 749 return retValue; | |
| 750 } | |
| 751 final int size = classes.size(); | |
| 752 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
| 753 public boolean doObj(Oop oop) { | |
| 754 for (int i=0; i < size; i++) { | |
| 755 if (klassArray[i].equals(oop.getKlass())) { | |
| 756 retValue[i]++; | |
| 757 break; | |
| 758 } | |
| 759 } | |
| 760 return false; | |
| 761 } | |
| 762 }); | |
| 763 | |
| 764 return retValue; | |
| 765 } | |
| 766 | |
| 767 private List getPath (String pathName) { | |
| 768 String cp = saVM.getSystemProperty(pathName); | |
| 769 String pathSep = saVM.getSystemProperty("path.separator"); | |
| 770 ArrayList al = new ArrayList(); | |
| 771 StringTokenizer st = new StringTokenizer(cp, pathSep); | |
| 772 while (st.hasMoreTokens()) { | |
| 773 al.add(st.nextToken()); | |
| 774 } | |
| 775 al.trimToSize(); | |
| 776 return al; | |
| 777 } | |
| 778 | |
| 779 public List classPath() { | |
| 780 return getPath("java.class.path"); | |
| 781 } | |
| 782 | |
| 783 public List bootClassPath() { | |
| 784 return getPath("sun.boot.class.path"); | |
| 785 } | |
| 786 | |
| 787 public String baseDirectory() { | |
| 788 return saVM.getSystemProperty("user.dir"); | |
| 789 } | |
| 790 | |
| 791 public void setDefaultStratum(String stratum) { | |
| 792 defaultStratum = stratum; | |
| 793 } | |
| 794 | |
| 795 public String getDefaultStratum() { | |
| 796 return defaultStratum; | |
| 797 } | |
| 798 | |
| 799 public String description() { | |
| 800 return java.text.MessageFormat.format(java.util.ResourceBundle. | |
| 801 getBundle("com.sun.tools.jdi.resources.jdi").getString("version_format"), | |
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802 "" + vmmgr.majorInterfaceVersion(), |
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803 "" + vmmgr.minorInterfaceVersion(), |
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804 name()); |
| 0 | 805 } |
| 806 | |
| 807 public String version() { | |
| 808 return saVM.getSystemProperty("java.version"); | |
| 809 } | |
| 810 | |
| 811 public String name() { | |
| 812 StringBuffer sb = new StringBuffer(); | |
| 813 sb.append("JVM version "); | |
| 814 sb.append(version()); | |
| 815 sb.append(" ("); | |
| 816 sb.append(saVM.getSystemProperty("java.vm.name")); | |
| 817 sb.append(", "); | |
| 818 sb.append(saVM.getSystemProperty("java.vm.info")); | |
| 819 sb.append(")"); | |
| 820 return sb.toString(); | |
| 821 } | |
| 822 | |
| 823 // from interface Mirror | |
| 824 public VirtualMachine virtualMachine() { | |
| 825 return this; | |
| 826 } | |
| 827 | |
| 828 public String toString() { | |
| 829 return name(); | |
| 830 } | |
| 831 | |
| 832 public void setDebugTraceMode(int traceFlags) { | |
| 833 // spec. says output is implementation dependent | |
| 834 // and trace mode may be ignored. we ignore it :-) | |
| 835 } | |
| 836 | |
| 837 // heap walking API | |
| 838 | |
| 839 // capability check | |
| 840 public boolean canWalkHeap() { | |
| 841 return true; | |
| 842 } | |
| 843 | |
| 844 // return a list of all objects in heap | |
| 845 public List/*<ObjectReference>*/ allObjects() { | |
| 846 final List objects = new ArrayList(0); | |
| 847 saObjectHeap.iterate( | |
| 848 new DefaultHeapVisitor() { | |
| 849 public boolean doObj(Oop oop) { | |
| 850 objects.add(objectMirror(oop)); | |
| 851 return false; | |
| 852 } | |
| 853 }); | |
| 854 return objects; | |
| 855 } | |
| 856 | |
| 857 // equivalent to objectsByType(type, true) | |
| 858 public List/*<ObjectReference>*/ objectsByType(ReferenceType type) { | |
| 859 return objectsByType(type, true); | |
| 860 } | |
| 861 | |
| 862 // returns objects of type exactly equal to given type | |
| 863 private List/*<ObjectReference>*/ objectsByExactType(ReferenceType type) { | |
| 864 final List objects = new ArrayList(0); | |
| 865 final Klass givenKls = ((ReferenceTypeImpl)type).ref(); | |
| 866 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
| 867 public boolean doObj(Oop oop) { | |
| 868 if (givenKls.equals(oop.getKlass())) { | |
| 869 objects.add(objectMirror(oop)); | |
| 870 } | |
| 871 return false; | |
| 872 } | |
| 873 }); | |
| 874 return objects; | |
| 875 } | |
| 876 | |
| 877 // returns objects of given type as well as it's subtypes | |
| 878 private List/*<ObjectReference>*/ objectsBySubType(ReferenceType type) { | |
| 879 final List objects = new ArrayList(0); | |
| 880 final ReferenceType givenType = type; | |
| 881 saObjectHeap.iterate(new DefaultHeapVisitor() { | |
| 882 public boolean doObj(Oop oop) { | |
| 883 ReferenceTypeImpl curType = (ReferenceTypeImpl) referenceType(oop.getKlass()); | |
| 884 if (curType.isAssignableTo(givenType)) { | |
| 885 objects.add(objectMirror(oop)); | |
| 886 } | |
| 887 return false; | |
| 888 } | |
| 889 }); | |
| 890 return objects; | |
| 891 } | |
| 892 | |
| 893 // includeSubtypes - do you want to include subclass/subtype instances of given | |
| 894 // ReferenceType or do we want objects of exact type only? | |
| 895 public List/*<ObjectReference>*/ objectsByType(ReferenceType type, boolean includeSubtypes) { | |
| 896 Klass kls = ((ReferenceTypeImpl)type).ref(); | |
| 897 if (kls instanceof InstanceKlass) { | |
| 898 InstanceKlass ik = (InstanceKlass) kls; | |
|
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899 // if the Klass is final or if there are no subklasses loaded yet |
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900 if (ik.getAccessFlagsObj().isFinal() || ik.getSubklassKlass() == null) { |
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901 includeSubtypes = false; |
| 0 | 902 } |
| 903 } else { | |
| 904 // no subtypes for primitive array types | |
| 905 ArrayTypeImpl arrayType = (ArrayTypeImpl) type; | |
| 906 try { | |
| 907 Type componentType = arrayType.componentType(); | |
| 908 if (componentType instanceof PrimitiveType) { | |
| 909 includeSubtypes = false; | |
| 910 } | |
| 911 } catch (ClassNotLoadedException cnle) { | |
| 912 // ignore. component type not yet loaded | |
| 913 } | |
| 914 } | |
| 915 | |
| 916 if (includeSubtypes) { | |
| 917 return objectsBySubType(type); | |
| 918 } else { | |
| 919 return objectsByExactType(type); | |
| 920 } | |
| 921 } | |
| 922 | |
| 923 Type findBootType(String signature) throws ClassNotLoadedException { | |
| 924 List types = allClasses(); | |
| 925 Iterator iter = types.iterator(); | |
| 926 while (iter.hasNext()) { | |
| 927 ReferenceType type = (ReferenceType)iter.next(); | |
| 928 if ((type.classLoader() == null) && | |
| 929 (type.signature().equals(signature))) { | |
| 930 return type; | |
| 931 } | |
| 932 } | |
| 933 JNITypeParser parser = new JNITypeParser(signature); | |
| 934 throw new ClassNotLoadedException(parser.typeName(), | |
| 935 "Type " + parser.typeName() + " not loaded"); | |
| 936 } | |
| 937 | |
| 938 BooleanType theBooleanType() { | |
| 939 if (theBooleanType == null) { | |
| 940 synchronized(this) { | |
| 941 if (theBooleanType == null) { | |
| 942 theBooleanType = new BooleanTypeImpl(this); | |
| 943 } | |
| 944 } | |
| 945 } | |
| 946 return theBooleanType; | |
| 947 } | |
| 948 | |
| 949 ByteType theByteType() { | |
| 950 if (theByteType == null) { | |
| 951 synchronized(this) { | |
| 952 if (theByteType == null) { | |
| 953 theByteType = new ByteTypeImpl(this); | |
| 954 } | |
| 955 } | |
| 956 } | |
| 957 return theByteType; | |
| 958 } | |
| 959 | |
| 960 CharType theCharType() { | |
| 961 if (theCharType == null) { | |
| 962 synchronized(this) { | |
| 963 if (theCharType == null) { | |
| 964 theCharType = new CharTypeImpl(this); | |
| 965 } | |
| 966 } | |
| 967 } | |
| 968 return theCharType; | |
| 969 } | |
| 970 | |
| 971 ShortType theShortType() { | |
| 972 if (theShortType == null) { | |
| 973 synchronized(this) { | |
| 974 if (theShortType == null) { | |
| 975 theShortType = new ShortTypeImpl(this); | |
| 976 } | |
| 977 } | |
| 978 } | |
| 979 return theShortType; | |
| 980 } | |
| 981 | |
| 982 IntegerType theIntegerType() { | |
| 983 if (theIntegerType == null) { | |
| 984 synchronized(this) { | |
| 985 if (theIntegerType == null) { | |
| 986 theIntegerType = new IntegerTypeImpl(this); | |
| 987 } | |
| 988 } | |
| 989 } | |
| 990 return theIntegerType; | |
| 991 } | |
| 992 | |
| 993 LongType theLongType() { | |
| 994 if (theLongType == null) { | |
| 995 synchronized(this) { | |
| 996 if (theLongType == null) { | |
| 997 theLongType = new LongTypeImpl(this); | |
| 998 } | |
| 999 } | |
| 1000 } | |
| 1001 return theLongType; | |
| 1002 } | |
| 1003 | |
| 1004 FloatType theFloatType() { | |
| 1005 if (theFloatType == null) { | |
| 1006 synchronized(this) { | |
| 1007 if (theFloatType == null) { | |
| 1008 theFloatType = new FloatTypeImpl(this); | |
| 1009 } | |
| 1010 } | |
| 1011 } | |
| 1012 return theFloatType; | |
| 1013 } | |
| 1014 | |
| 1015 DoubleType theDoubleType() { | |
| 1016 if (theDoubleType == null) { | |
| 1017 synchronized(this) { | |
| 1018 if (theDoubleType == null) { | |
| 1019 theDoubleType = new DoubleTypeImpl(this); | |
| 1020 } | |
| 1021 } | |
| 1022 } | |
| 1023 return theDoubleType; | |
| 1024 } | |
| 1025 | |
| 1026 VoidType theVoidType() { | |
| 1027 if (theVoidType == null) { | |
| 1028 synchronized(this) { | |
| 1029 if (theVoidType == null) { | |
| 1030 theVoidType = new VoidTypeImpl(this); | |
| 1031 } | |
| 1032 } | |
| 1033 } | |
| 1034 return theVoidType; | |
| 1035 } | |
| 1036 | |
| 1037 PrimitiveType primitiveTypeMirror(char tag) { | |
| 1038 switch (tag) { | |
| 1039 case 'Z': | |
| 1040 return theBooleanType(); | |
| 1041 case 'B': | |
| 1042 return theByteType(); | |
| 1043 case 'C': | |
| 1044 return theCharType(); | |
| 1045 case 'S': | |
| 1046 return theShortType(); | |
| 1047 case 'I': | |
| 1048 return theIntegerType(); | |
| 1049 case 'J': | |
| 1050 return theLongType(); | |
| 1051 case 'F': | |
| 1052 return theFloatType(); | |
| 1053 case 'D': | |
| 1054 return theDoubleType(); | |
| 1055 default: | |
| 1056 throw new IllegalArgumentException("Unrecognized primitive tag " + tag); | |
| 1057 } | |
| 1058 } | |
| 1059 | |
| 1060 private void processQueue() { | |
| 1061 Reference ref; | |
| 1062 while ((ref = referenceQueue.poll()) != null) { | |
| 1063 SoftObjectReference softRef = (SoftObjectReference)ref; | |
| 1064 removeObjectMirror(softRef); | |
| 1065 } | |
| 1066 } | |
| 1067 | |
| 1068 // Address value is used as uniqueID by ObjectReferenceImpl | |
| 1069 long getAddressValue(Oop obj) { | |
| 1070 return vm.saVM.getDebugger().getAddressValue(obj.getHandle()); | |
| 1071 } | |
| 1072 | |
| 1073 synchronized ObjectReferenceImpl objectMirror(Oop key) { | |
| 1074 | |
| 1075 // Handle any queue elements that are not strongly reachable | |
| 1076 processQueue(); | |
| 1077 | |
| 1078 if (key == null) { | |
| 1079 return null; | |
| 1080 } | |
| 1081 ObjectReferenceImpl object = null; | |
| 1082 | |
| 1083 /* | |
| 1084 * Attempt to retrieve an existing object object reference | |
| 1085 */ | |
| 1086 SoftObjectReference ref = (SoftObjectReference)objectsByID.get(key); | |
| 1087 if (ref != null) { | |
| 1088 object = ref.object(); | |
| 1089 } | |
| 1090 | |
| 1091 /* | |
| 1092 * If the object wasn't in the table, or it's soft reference was | |
| 1093 * cleared, create a new instance. | |
| 1094 */ | |
| 1095 if (object == null) { | |
| 1096 if (key instanceof Instance) { | |
| 1097 // look for well-known classes | |
| 1098 Symbol className = key.getKlass().getName(); | |
| 1099 if (Assert.ASSERTS_ENABLED) { | |
| 1100 Assert.that(className != null, "Null class name"); | |
| 1101 } | |
| 1102 Instance inst = (Instance) key; | |
| 1103 if (className.equals(javaLangString)) { | |
| 1104 object = new StringReferenceImpl(this, inst); | |
| 1105 } else if (className.equals(javaLangThread)) { | |
| 1106 object = new ThreadReferenceImpl(this, inst); | |
| 1107 } else if (className.equals(javaLangThreadGroup)) { | |
| 1108 object = new ThreadGroupReferenceImpl(this, inst); | |
| 1109 } else if (className.equals(javaLangClass)) { | |
| 1110 object = new ClassObjectReferenceImpl(this, inst); | |
| 1111 } else if (className.equals(javaLangClassLoader)) { | |
| 1112 object = new ClassLoaderReferenceImpl(this, inst); | |
| 1113 } else { | |
| 1114 // not a well-known class. But the base class may be | |
| 1115 // one of the known classes. | |
| 1116 Klass kls = key.getKlass().getSuper(); | |
| 1117 while (kls != null) { | |
| 1118 className = kls.getName(); | |
| 1119 // java.lang.Class and java.lang.String are final classes | |
| 1120 if (className.equals(javaLangThread)) { | |
| 1121 object = new ThreadReferenceImpl(this, inst); | |
| 1122 break; | |
| 1123 } else if(className.equals(javaLangThreadGroup)) { | |
| 1124 object = new ThreadGroupReferenceImpl(this, inst); | |
| 1125 break; | |
| 1126 } else if (className.equals(javaLangClassLoader)) { | |
| 1127 object = new ClassLoaderReferenceImpl(this, inst); | |
| 1128 break; | |
| 1129 } | |
| 1130 kls = kls.getSuper(); | |
| 1131 } | |
| 1132 | |
| 1133 if (object == null) { | |
| 1134 // create generic object reference | |
| 1135 object = new ObjectReferenceImpl(this, inst); | |
| 1136 } | |
| 1137 } | |
| 1138 } else if (key instanceof TypeArray) { | |
| 1139 object = new ArrayReferenceImpl(this, (Array) key); | |
| 1140 } else if (key instanceof ObjArray) { | |
| 1141 object = new ArrayReferenceImpl(this, (Array) key); | |
| 1142 } else { | |
| 1143 throw new RuntimeException("unexpected object type " + key); | |
| 1144 } | |
| 1145 ref = new SoftObjectReference(key, object, referenceQueue); | |
| 1146 | |
| 1147 /* | |
| 1148 * If there was no previous entry in the table, we add one here | |
| 1149 * If the previous entry was cleared, we replace it here. | |
| 1150 */ | |
| 1151 objectsByID.put(key, ref); | |
| 1152 } else { | |
| 1153 ref.incrementCount(); | |
| 1154 } | |
| 1155 | |
| 1156 return object; | |
| 1157 } | |
| 1158 | |
| 1159 synchronized void removeObjectMirror(SoftObjectReference ref) { | |
| 1160 /* | |
| 1161 * This will remove the soft reference if it has not been | |
| 1162 * replaced in the cache. | |
| 1163 */ | |
| 1164 objectsByID.remove(ref.key()); | |
| 1165 } | |
| 1166 | |
| 1167 StringReferenceImpl stringMirror(Instance id) { | |
| 1168 return (StringReferenceImpl) objectMirror(id); | |
| 1169 } | |
| 1170 | |
| 1171 ArrayReferenceImpl arrayMirror(Array id) { | |
| 1172 return (ArrayReferenceImpl) objectMirror(id); | |
| 1173 } | |
| 1174 | |
| 1175 ThreadReferenceImpl threadMirror(Instance id) { | |
| 1176 return (ThreadReferenceImpl) objectMirror(id); | |
| 1177 } | |
| 1178 | |
| 1179 ThreadReferenceImpl threadMirror(JavaThread jt) { | |
| 1180 return (ThreadReferenceImpl) objectMirror(jt.getThreadObj()); | |
| 1181 } | |
| 1182 | |
| 1183 ThreadGroupReferenceImpl threadGroupMirror(Instance id) { | |
| 1184 return (ThreadGroupReferenceImpl) objectMirror(id); | |
| 1185 } | |
| 1186 | |
| 1187 ClassLoaderReferenceImpl classLoaderMirror(Instance id) { | |
| 1188 return (ClassLoaderReferenceImpl) objectMirror(id); | |
| 1189 } | |
| 1190 | |
| 1191 ClassObjectReferenceImpl classObjectMirror(Instance id) { | |
| 1192 return (ClassObjectReferenceImpl) objectMirror(id); | |
| 1193 } | |
| 1194 | |
| 1195 // Use of soft refs and caching stuff here has to be re-examined. | |
| 1196 // It might not make sense for JDI - SA. | |
| 1197 static private class SoftObjectReference extends SoftReference { | |
| 1198 int count; | |
| 1199 Object key; | |
| 1200 | |
| 1201 SoftObjectReference(Object key, ObjectReferenceImpl mirror, | |
| 1202 ReferenceQueue queue) { | |
| 1203 super(mirror, queue); | |
| 1204 this.count = 1; | |
| 1205 this.key = key; | |
| 1206 } | |
| 1207 | |
| 1208 int count() { | |
| 1209 return count; | |
| 1210 } | |
| 1211 | |
| 1212 void incrementCount() { | |
| 1213 count++; | |
| 1214 } | |
| 1215 | |
| 1216 Object key() { | |
| 1217 return key; | |
| 1218 } | |
| 1219 | |
| 1220 ObjectReferenceImpl object() { | |
| 1221 return (ObjectReferenceImpl)get(); | |
| 1222 } | |
| 1223 } | |
| 1224 } |