Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/jdi/VirtualMachineImpl.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 49036505ab5f |
| children | 5a98bf7d847b |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
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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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
|
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.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 { | |
|
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da91efe96a93
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450 throw new RuntimeException("should not reach here:" + kk); |
| 0 | 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; | |
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892 // if the Klass is final or if there are no subklasses loaded yet |
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893 if (ik.getAccessFlagsObj().isFinal() || ik.getSubklassKlass() == null) { |
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894 includeSubtypes = false; |
| 0 | 895 } |
| 896 } else { | |
| 897 // no subtypes for primitive array types | |
| 898 ArrayTypeImpl arrayType = (ArrayTypeImpl) type; | |
| 899 try { | |
| 900 Type componentType = arrayType.componentType(); | |
| 901 if (componentType instanceof PrimitiveType) { | |
| 902 includeSubtypes = false; | |
| 903 } | |
| 904 } catch (ClassNotLoadedException cnle) { | |
| 905 // ignore. component type not yet loaded | |
| 906 } | |
| 907 } | |
| 908 | |
| 909 if (includeSubtypes) { | |
| 910 return objectsBySubType(type); | |
| 911 } else { | |
| 912 return objectsByExactType(type); | |
| 913 } | |
| 914 } | |
| 915 | |
| 916 Type findBootType(String signature) throws ClassNotLoadedException { | |
| 917 List types = allClasses(); | |
| 918 Iterator iter = types.iterator(); | |
| 919 while (iter.hasNext()) { | |
| 920 ReferenceType type = (ReferenceType)iter.next(); | |
| 921 if ((type.classLoader() == null) && | |
| 922 (type.signature().equals(signature))) { | |
| 923 return type; | |
| 924 } | |
| 925 } | |
| 926 JNITypeParser parser = new JNITypeParser(signature); | |
| 927 throw new ClassNotLoadedException(parser.typeName(), | |
| 928 "Type " + parser.typeName() + " not loaded"); | |
| 929 } | |
| 930 | |
| 931 BooleanType theBooleanType() { | |
| 932 if (theBooleanType == null) { | |
| 933 synchronized(this) { | |
| 934 if (theBooleanType == null) { | |
| 935 theBooleanType = new BooleanTypeImpl(this); | |
| 936 } | |
| 937 } | |
| 938 } | |
| 939 return theBooleanType; | |
| 940 } | |
| 941 | |
| 942 ByteType theByteType() { | |
| 943 if (theByteType == null) { | |
| 944 synchronized(this) { | |
| 945 if (theByteType == null) { | |
| 946 theByteType = new ByteTypeImpl(this); | |
| 947 } | |
| 948 } | |
| 949 } | |
| 950 return theByteType; | |
| 951 } | |
| 952 | |
| 953 CharType theCharType() { | |
| 954 if (theCharType == null) { | |
| 955 synchronized(this) { | |
| 956 if (theCharType == null) { | |
| 957 theCharType = new CharTypeImpl(this); | |
| 958 } | |
| 959 } | |
| 960 } | |
| 961 return theCharType; | |
| 962 } | |
| 963 | |
| 964 ShortType theShortType() { | |
| 965 if (theShortType == null) { | |
| 966 synchronized(this) { | |
| 967 if (theShortType == null) { | |
| 968 theShortType = new ShortTypeImpl(this); | |
| 969 } | |
| 970 } | |
| 971 } | |
| 972 return theShortType; | |
| 973 } | |
| 974 | |
| 975 IntegerType theIntegerType() { | |
| 976 if (theIntegerType == null) { | |
| 977 synchronized(this) { | |
| 978 if (theIntegerType == null) { | |
| 979 theIntegerType = new IntegerTypeImpl(this); | |
| 980 } | |
| 981 } | |
| 982 } | |
| 983 return theIntegerType; | |
| 984 } | |
| 985 | |
| 986 LongType theLongType() { | |
| 987 if (theLongType == null) { | |
| 988 synchronized(this) { | |
| 989 if (theLongType == null) { | |
| 990 theLongType = new LongTypeImpl(this); | |
| 991 } | |
| 992 } | |
| 993 } | |
| 994 return theLongType; | |
| 995 } | |
| 996 | |
| 997 FloatType theFloatType() { | |
| 998 if (theFloatType == null) { | |
| 999 synchronized(this) { | |
| 1000 if (theFloatType == null) { | |
| 1001 theFloatType = new FloatTypeImpl(this); | |
| 1002 } | |
| 1003 } | |
| 1004 } | |
| 1005 return theFloatType; | |
| 1006 } | |
| 1007 | |
| 1008 DoubleType theDoubleType() { | |
| 1009 if (theDoubleType == null) { | |
| 1010 synchronized(this) { | |
| 1011 if (theDoubleType == null) { | |
| 1012 theDoubleType = new DoubleTypeImpl(this); | |
| 1013 } | |
| 1014 } | |
| 1015 } | |
| 1016 return theDoubleType; | |
| 1017 } | |
| 1018 | |
| 1019 VoidType theVoidType() { | |
| 1020 if (theVoidType == null) { | |
| 1021 synchronized(this) { | |
| 1022 if (theVoidType == null) { | |
| 1023 theVoidType = new VoidTypeImpl(this); | |
| 1024 } | |
| 1025 } | |
| 1026 } | |
| 1027 return theVoidType; | |
| 1028 } | |
| 1029 | |
| 1030 PrimitiveType primitiveTypeMirror(char tag) { | |
| 1031 switch (tag) { | |
| 1032 case 'Z': | |
| 1033 return theBooleanType(); | |
| 1034 case 'B': | |
| 1035 return theByteType(); | |
| 1036 case 'C': | |
| 1037 return theCharType(); | |
| 1038 case 'S': | |
| 1039 return theShortType(); | |
| 1040 case 'I': | |
| 1041 return theIntegerType(); | |
| 1042 case 'J': | |
| 1043 return theLongType(); | |
| 1044 case 'F': | |
| 1045 return theFloatType(); | |
| 1046 case 'D': | |
| 1047 return theDoubleType(); | |
| 1048 default: | |
| 1049 throw new IllegalArgumentException("Unrecognized primitive tag " + tag); | |
| 1050 } | |
| 1051 } | |
| 1052 | |
| 1053 private void processQueue() { | |
| 1054 Reference ref; | |
| 1055 while ((ref = referenceQueue.poll()) != null) { | |
| 1056 SoftObjectReference softRef = (SoftObjectReference)ref; | |
| 1057 removeObjectMirror(softRef); | |
| 1058 } | |
| 1059 } | |
| 1060 | |
| 1061 // Address value is used as uniqueID by ObjectReferenceImpl | |
| 1062 long getAddressValue(Oop obj) { | |
| 1063 return vm.saVM.getDebugger().getAddressValue(obj.getHandle()); | |
| 1064 } | |
| 1065 | |
| 1066 synchronized ObjectReferenceImpl objectMirror(Oop key) { | |
| 1067 | |
| 1068 // Handle any queue elements that are not strongly reachable | |
| 1069 processQueue(); | |
| 1070 | |
| 1071 if (key == null) { | |
| 1072 return null; | |
| 1073 } | |
| 1074 ObjectReferenceImpl object = null; | |
| 1075 | |
| 1076 /* | |
| 1077 * Attempt to retrieve an existing object object reference | |
| 1078 */ | |
| 1079 SoftObjectReference ref = (SoftObjectReference)objectsByID.get(key); | |
| 1080 if (ref != null) { | |
| 1081 object = ref.object(); | |
| 1082 } | |
| 1083 | |
| 1084 /* | |
| 1085 * If the object wasn't in the table, or it's soft reference was | |
| 1086 * cleared, create a new instance. | |
| 1087 */ | |
| 1088 if (object == null) { | |
| 1089 if (key instanceof Instance) { | |
| 1090 // look for well-known classes | |
| 1091 Symbol className = key.getKlass().getName(); | |
| 1092 if (Assert.ASSERTS_ENABLED) { | |
| 1093 Assert.that(className != null, "Null class name"); | |
| 1094 } | |
| 1095 Instance inst = (Instance) key; | |
| 1096 if (className.equals(javaLangString)) { | |
| 1097 object = new StringReferenceImpl(this, inst); | |
| 1098 } else if (className.equals(javaLangThread)) { | |
| 1099 object = new ThreadReferenceImpl(this, inst); | |
| 1100 } else if (className.equals(javaLangThreadGroup)) { | |
| 1101 object = new ThreadGroupReferenceImpl(this, inst); | |
| 1102 } else if (className.equals(javaLangClass)) { | |
| 1103 object = new ClassObjectReferenceImpl(this, inst); | |
| 1104 } else if (className.equals(javaLangClassLoader)) { | |
| 1105 object = new ClassLoaderReferenceImpl(this, inst); | |
| 1106 } else { | |
| 1107 // not a well-known class. But the base class may be | |
| 1108 // one of the known classes. | |
| 1109 Klass kls = key.getKlass().getSuper(); | |
| 1110 while (kls != null) { | |
| 1111 className = kls.getName(); | |
| 1112 // java.lang.Class and java.lang.String are final classes | |
| 1113 if (className.equals(javaLangThread)) { | |
| 1114 object = new ThreadReferenceImpl(this, inst); | |
| 1115 break; | |
| 1116 } else if(className.equals(javaLangThreadGroup)) { | |
| 1117 object = new ThreadGroupReferenceImpl(this, inst); | |
| 1118 break; | |
| 1119 } else if (className.equals(javaLangClassLoader)) { | |
| 1120 object = new ClassLoaderReferenceImpl(this, inst); | |
| 1121 break; | |
| 1122 } | |
| 1123 kls = kls.getSuper(); | |
| 1124 } | |
| 1125 | |
| 1126 if (object == null) { | |
| 1127 // create generic object reference | |
| 1128 object = new ObjectReferenceImpl(this, inst); | |
| 1129 } | |
| 1130 } | |
| 1131 } else if (key instanceof TypeArray) { | |
| 1132 object = new ArrayReferenceImpl(this, (Array) key); | |
| 1133 } else if (key instanceof ObjArray) { | |
| 1134 object = new ArrayReferenceImpl(this, (Array) key); | |
| 1135 } else { | |
| 1136 throw new RuntimeException("unexpected object type " + key); | |
| 1137 } | |
| 1138 ref = new SoftObjectReference(key, object, referenceQueue); | |
| 1139 | |
| 1140 /* | |
| 1141 * If there was no previous entry in the table, we add one here | |
| 1142 * If the previous entry was cleared, we replace it here. | |
| 1143 */ | |
| 1144 objectsByID.put(key, ref); | |
| 1145 } else { | |
| 1146 ref.incrementCount(); | |
| 1147 } | |
| 1148 | |
| 1149 return object; | |
| 1150 } | |
| 1151 | |
| 1152 synchronized void removeObjectMirror(SoftObjectReference ref) { | |
| 1153 /* | |
| 1154 * This will remove the soft reference if it has not been | |
| 1155 * replaced in the cache. | |
| 1156 */ | |
| 1157 objectsByID.remove(ref.key()); | |
| 1158 } | |
| 1159 | |
| 1160 StringReferenceImpl stringMirror(Instance id) { | |
| 1161 return (StringReferenceImpl) objectMirror(id); | |
| 1162 } | |
| 1163 | |
| 1164 ArrayReferenceImpl arrayMirror(Array id) { | |
| 1165 return (ArrayReferenceImpl) objectMirror(id); | |
| 1166 } | |
| 1167 | |
| 1168 ThreadReferenceImpl threadMirror(Instance id) { | |
| 1169 return (ThreadReferenceImpl) objectMirror(id); | |
| 1170 } | |
| 1171 | |
| 1172 ThreadReferenceImpl threadMirror(JavaThread jt) { | |
| 1173 return (ThreadReferenceImpl) objectMirror(jt.getThreadObj()); | |
| 1174 } | |
| 1175 | |
| 1176 ThreadGroupReferenceImpl threadGroupMirror(Instance id) { | |
| 1177 return (ThreadGroupReferenceImpl) objectMirror(id); | |
| 1178 } | |
| 1179 | |
| 1180 ClassLoaderReferenceImpl classLoaderMirror(Instance id) { | |
| 1181 return (ClassLoaderReferenceImpl) objectMirror(id); | |
| 1182 } | |
| 1183 | |
| 1184 ClassObjectReferenceImpl classObjectMirror(Instance id) { | |
| 1185 return (ClassObjectReferenceImpl) objectMirror(id); | |
| 1186 } | |
| 1187 | |
| 1188 // Use of soft refs and caching stuff here has to be re-examined. | |
| 1189 // It might not make sense for JDI - SA. | |
| 1190 static private class SoftObjectReference extends SoftReference { | |
| 1191 int count; | |
| 1192 Object key; | |
| 1193 | |
| 1194 SoftObjectReference(Object key, ObjectReferenceImpl mirror, | |
| 1195 ReferenceQueue queue) { | |
| 1196 super(mirror, queue); | |
| 1197 this.count = 1; | |
| 1198 this.key = key; | |
| 1199 } | |
| 1200 | |
| 1201 int count() { | |
| 1202 return count; | |
| 1203 } | |
| 1204 | |
| 1205 void incrementCount() { | |
| 1206 count++; | |
| 1207 } | |
| 1208 | |
| 1209 Object key() { | |
| 1210 return key; | |
| 1211 } | |
| 1212 | |
| 1213 ObjectReferenceImpl object() { | |
| 1214 return (ObjectReferenceImpl)get(); | |
| 1215 } | |
| 1216 } | |
| 1217 } |