J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999-2001 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 | import com.sun.jdi.*; |
| 25 | import com.sun.jdi.request.*; |
| 26 | import com.sun.jdi.event.*; |
| 27 | import java.util.*; |
| 28 | import java.io.*; |
| 29 | |
| 30 | |
| 31 | /** |
| 32 | * Framework used by all JDI regression tests |
| 33 | */ |
| 34 | abstract public class JDIScaffold { |
| 35 | private boolean shouldTrace = false; |
| 36 | private VMConnection connection; |
| 37 | private VirtualMachine vm; |
| 38 | private EventRequestManager requestManager; |
| 39 | private List listeners = Collections.synchronizedList(new LinkedList()); |
| 40 | ThreadReference vmStartThread = null; |
| 41 | boolean vmDied = false; |
| 42 | boolean vmDisconnected = false; |
| 43 | |
| 44 | static private class ArgInfo { |
| 45 | String targetVMArgs = ""; |
| 46 | String targetAppCommandLine = ""; |
| 47 | String connectorSpec = "com.sun.jdi.CommandLineLaunch:"; |
| 48 | int traceFlags = 0; |
| 49 | } |
| 50 | |
| 51 | static public interface TargetListener { |
| 52 | boolean eventSetReceived(EventSet set); |
| 53 | boolean eventSetComplete(EventSet set); |
| 54 | boolean eventReceived(Event event); |
| 55 | boolean breakpointReached(BreakpointEvent event); |
| 56 | boolean exceptionThrown(ExceptionEvent event); |
| 57 | boolean stepCompleted(StepEvent event); |
| 58 | boolean classPrepared(ClassPrepareEvent event); |
| 59 | boolean classUnloaded(ClassUnloadEvent event); |
| 60 | boolean methodEntered(MethodEntryEvent event); |
| 61 | boolean methodExited(MethodExitEvent event); |
| 62 | boolean fieldAccessed(AccessWatchpointEvent event); |
| 63 | boolean fieldModified(ModificationWatchpointEvent event); |
| 64 | boolean threadStarted(ThreadStartEvent event); |
| 65 | boolean threadDied(ThreadDeathEvent event); |
| 66 | boolean vmStarted(VMStartEvent event); |
| 67 | boolean vmDied(VMDeathEvent event); |
| 68 | boolean vmDisconnected(VMDisconnectEvent event); |
| 69 | } |
| 70 | |
| 71 | static public class TargetAdapter implements TargetListener { |
| 72 | public boolean eventSetReceived(EventSet set) { |
| 73 | return false; |
| 74 | } |
| 75 | public boolean eventSetComplete(EventSet set) { |
| 76 | return false; |
| 77 | } |
| 78 | public boolean eventReceived(Event event) { |
| 79 | return false; |
| 80 | } |
| 81 | public boolean breakpointReached(BreakpointEvent event) { |
| 82 | return false; |
| 83 | } |
| 84 | public boolean exceptionThrown(ExceptionEvent event) { |
| 85 | return false; |
| 86 | } |
| 87 | public boolean stepCompleted(StepEvent event) { |
| 88 | return false; |
| 89 | } |
| 90 | public boolean classPrepared(ClassPrepareEvent event) { |
| 91 | return false; |
| 92 | } |
| 93 | public boolean classUnloaded(ClassUnloadEvent event) { |
| 94 | return false; |
| 95 | } |
| 96 | public boolean methodEntered(MethodEntryEvent event) { |
| 97 | return false; |
| 98 | } |
| 99 | public boolean methodExited(MethodExitEvent event) { |
| 100 | return false; |
| 101 | } |
| 102 | public boolean fieldAccessed(AccessWatchpointEvent event) { |
| 103 | return false; |
| 104 | } |
| 105 | public boolean fieldModified(ModificationWatchpointEvent event) { |
| 106 | return false; |
| 107 | } |
| 108 | public boolean threadStarted(ThreadStartEvent event) { |
| 109 | return false; |
| 110 | } |
| 111 | public boolean threadDied(ThreadDeathEvent event) { |
| 112 | return false; |
| 113 | } |
| 114 | public boolean vmStarted(VMStartEvent event) { |
| 115 | return false; |
| 116 | } |
| 117 | public boolean vmDied(VMDeathEvent event) { |
| 118 | return false; |
| 119 | } |
| 120 | public boolean vmDisconnected(VMDisconnectEvent event) { |
| 121 | return false; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | private class EventHandler implements Runnable { |
| 126 | EventHandler() { |
| 127 | Thread thread = new Thread(this); |
| 128 | thread.setDaemon(true); |
| 129 | thread.start(); |
| 130 | } |
| 131 | |
| 132 | private boolean notifyEvent(TargetListener listener, Event event) { |
| 133 | if (listener.eventReceived(event) == true) { |
| 134 | return true; |
| 135 | } else if (event instanceof BreakpointEvent) { |
| 136 | return listener.breakpointReached((BreakpointEvent)event); |
| 137 | } else if (event instanceof ExceptionEvent) { |
| 138 | return listener.exceptionThrown((ExceptionEvent)event); |
| 139 | } else if (event instanceof StepEvent) { |
| 140 | return listener.stepCompleted((StepEvent)event); |
| 141 | } else if (event instanceof ClassPrepareEvent) { |
| 142 | return listener.classPrepared((ClassPrepareEvent)event); |
| 143 | } else if (event instanceof ClassUnloadEvent) { |
| 144 | return listener.classUnloaded((ClassUnloadEvent)event); |
| 145 | } else if (event instanceof MethodEntryEvent) { |
| 146 | return listener.methodEntered((MethodEntryEvent)event); |
| 147 | } else if (event instanceof MethodExitEvent) { |
| 148 | return listener.methodExited((MethodExitEvent)event); |
| 149 | } else if (event instanceof AccessWatchpointEvent) { |
| 150 | return listener.fieldAccessed((AccessWatchpointEvent)event); |
| 151 | } else if (event instanceof ModificationWatchpointEvent) { |
| 152 | return listener.fieldModified((ModificationWatchpointEvent)event); |
| 153 | } else if (event instanceof ThreadStartEvent) { |
| 154 | return listener.threadStarted((ThreadStartEvent)event); |
| 155 | } else if (event instanceof ThreadDeathEvent) { |
| 156 | return listener.threadDied((ThreadDeathEvent)event); |
| 157 | } else if (event instanceof VMStartEvent) { |
| 158 | return listener.vmStarted((VMStartEvent)event); |
| 159 | } else if (event instanceof VMDeathEvent) { |
| 160 | return listener.vmDied((VMDeathEvent)event); |
| 161 | } else if (event instanceof VMDisconnectEvent) { |
| 162 | return listener.vmDisconnected((VMDisconnectEvent)event); |
| 163 | } else { |
| 164 | throw new InternalError("Unknown event type: " + event.getClass()); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | private void traceSuspendPolicy(int policy) { |
| 169 | if (shouldTrace) { |
| 170 | switch (policy) { |
| 171 | case EventRequest.SUSPEND_NONE: |
| 172 | traceln("JDI: runloop: suspend = SUSPEND_NONE"); |
| 173 | break; |
| 174 | case EventRequest.SUSPEND_ALL: |
| 175 | traceln("JDI: runloop: suspend = SUSPEND_ALL"); |
| 176 | break; |
| 177 | case EventRequest.SUSPEND_EVENT_THREAD: |
| 178 | traceln("JDI: runloop: suspend = SUSPEND_EVENT_THREAD"); |
| 179 | break; |
| 180 | } |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | public void run() { |
| 185 | boolean connected = true; |
| 186 | do { |
| 187 | try { |
| 188 | EventSet set = vm.eventQueue().remove(); |
| 189 | traceSuspendPolicy(set.suspendPolicy()); |
| 190 | synchronized (listeners) { |
| 191 | ListIterator iter = listeners.listIterator(); |
| 192 | while (iter.hasNext()) { |
| 193 | TargetListener listener = (TargetListener)iter.next(); |
| 194 | traceln("JDI: runloop: listener = " + listener); |
| 195 | if (listener.eventSetReceived(set) == true) { |
| 196 | iter.remove(); |
| 197 | } else { |
| 198 | Iterator jter = set.iterator(); |
| 199 | while (jter.hasNext()) { |
| 200 | Event event = (Event)jter.next(); |
| 201 | traceln("JDI: runloop: event = " + event.getClass()); |
| 202 | if (event instanceof VMDisconnectEvent) { |
| 203 | connected = false; |
| 204 | } |
| 205 | if (notifyEvent(listener, event) == true) { |
| 206 | iter.remove(); |
| 207 | break; |
| 208 | } |
| 209 | } |
| 210 | traceln("JDI: runloop: end of events loop"); |
| 211 | if (listener.eventSetComplete(set) == true) { |
| 212 | iter.remove(); |
| 213 | } |
| 214 | } |
| 215 | traceln("JDI: runloop: end of listener"); |
| 216 | } |
| 217 | } |
| 218 | } catch (InterruptedException e) { |
| 219 | } |
| 220 | traceln("JDI: runloop: end of outer loop"); |
| 221 | } while (connected); |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * Constructor |
| 227 | */ |
| 228 | public JDIScaffold() { |
| 229 | } |
| 230 | |
| 231 | public void enableScaffoldTrace() { |
| 232 | this.shouldTrace = true; |
| 233 | } |
| 234 | |
| 235 | public void disableScaffoldTrace() { |
| 236 | this.shouldTrace = false; |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /* |
| 241 | * Test cases should implement tests in runTests and should |
| 242 | * initiate testing by calling run(). |
| 243 | */ |
| 244 | abstract protected void runTests() throws Exception; |
| 245 | |
| 246 | final public void startTests() throws Exception { |
| 247 | try { |
| 248 | runTests(); |
| 249 | } finally { |
| 250 | shutdown(); |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | protected void println(String str) { |
| 255 | System.err.println(str); |
| 256 | } |
| 257 | |
| 258 | protected void traceln(String str) { |
| 259 | if (shouldTrace) { |
| 260 | println(str); |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | private ArgInfo parseArgs(String args[]) { |
| 265 | ArgInfo argInfo = new ArgInfo(); |
| 266 | for (int i = 0; i < args.length; i++) { |
| 267 | if (args[i].equals("-connect")) { |
| 268 | i++; |
| 269 | argInfo.connectorSpec = args[i]; |
| 270 | } else if (args[i].equals("-trace")) { |
| 271 | i++; |
| 272 | argInfo.traceFlags = Integer.decode(args[i]).intValue(); |
| 273 | } else if (args[i].startsWith("-J")) { |
| 274 | argInfo.targetVMArgs += (args[i].substring(2) + ' '); |
| 275 | |
| 276 | /* |
| 277 | * classpath can span two arguments so we need to handle |
| 278 | * it specially. |
| 279 | */ |
| 280 | if (args[i].equals("-J-classpath")) { |
| 281 | i++; |
| 282 | argInfo.targetVMArgs += (args[i] + ' '); |
| 283 | } |
| 284 | } else { |
| 285 | argInfo.targetAppCommandLine += (args[i] + ' '); |
| 286 | } |
| 287 | } |
| 288 | return argInfo; |
| 289 | } |
| 290 | |
| 291 | public void connect(String args[]) { |
| 292 | ArgInfo argInfo = parseArgs(args); |
| 293 | |
| 294 | argInfo.targetVMArgs += VMConnection.getDebuggeeVMOptions(); |
| 295 | connection = new VMConnection(argInfo.connectorSpec, |
| 296 | argInfo.traceFlags); |
| 297 | if (!connection.isLaunch()) { |
| 298 | throw new UnsupportedOperationException( |
| 299 | "Listening and Attaching not yet supported"); |
| 300 | } |
| 301 | |
| 302 | /* |
| 303 | * Add a listener to track VM start/death/disconnection and |
| 304 | * to update status fields accordingly. |
| 305 | */ |
| 306 | addListener(new TargetAdapter() { |
| 307 | public boolean vmStarted(VMStartEvent event) { |
| 308 | traceln("JDI: listener1: got VMStart"); |
| 309 | synchronized(JDIScaffold.this) { |
| 310 | vmStartThread = event.thread(); |
| 311 | JDIScaffold.this.notifyAll(); |
| 312 | } |
| 313 | return false; |
| 314 | } |
| 315 | |
| 316 | public boolean vmDied(VMDeathEvent event) { |
| 317 | traceln("JDI: listener1: got VMDeath"); |
| 318 | synchronized(JDIScaffold.this) { |
| 319 | vmDied = true; |
| 320 | JDIScaffold.this.notifyAll(); |
| 321 | } |
| 322 | return false; |
| 323 | } |
| 324 | |
| 325 | public boolean vmDisconnected(VMDisconnectEvent event) { |
| 326 | traceln("JDI: listener1: got VMDisconnectedEvent"); |
| 327 | synchronized(JDIScaffold.this) { |
| 328 | vmDisconnected = true; |
| 329 | JDIScaffold.this.notifyAll(); |
| 330 | } |
| 331 | return false; |
| 332 | } |
| 333 | }); |
| 334 | |
| 335 | if (connection.connector().name().equals("com.sun.jdi.CommandLineLaunch")) { |
| 336 | if (argInfo.targetVMArgs.length() > 0) { |
| 337 | if (connection.connectorArg("options").length() > 0) { |
| 338 | throw new IllegalArgumentException("VM options in two places"); |
| 339 | } |
| 340 | connection.setConnectorArg("options", argInfo.targetVMArgs); |
| 341 | } |
| 342 | if (argInfo.targetAppCommandLine.length() > 0) { |
| 343 | if (connection.connectorArg("main").length() > 0) { |
| 344 | throw new IllegalArgumentException("Command line in two places"); |
| 345 | } |
| 346 | connection.setConnectorArg("main", argInfo.targetAppCommandLine); |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | vm = connection.open(); |
| 351 | requestManager = vm.eventRequestManager(); |
| 352 | new EventHandler(); |
| 353 | } |
| 354 | |
| 355 | |
| 356 | public VirtualMachine vm() { |
| 357 | return vm; |
| 358 | } |
| 359 | |
| 360 | public EventRequestManager eventRequestManager() { |
| 361 | return requestManager; |
| 362 | } |
| 363 | |
| 364 | public void addListener(TargetListener listener) { |
| 365 | listeners.add(listener); |
| 366 | } |
| 367 | |
| 368 | public void removeListener(TargetListener listener) { |
| 369 | listeners.remove(listener); |
| 370 | } |
| 371 | |
| 372 | public synchronized ThreadReference waitForVMStart() { |
| 373 | while ((vmStartThread == null) && !vmDisconnected) { |
| 374 | try { |
| 375 | wait(); |
| 376 | } catch (InterruptedException e) { |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | if (vmStartThread == null) { |
| 381 | throw new VMDisconnectedException(); |
| 382 | } |
| 383 | |
| 384 | return vmStartThread; |
| 385 | } |
| 386 | |
| 387 | public synchronized void waitForVMDeath() { |
| 388 | while (!vmDied && !vmDisconnected) { |
| 389 | try { |
| 390 | traceln("JDI: waitForVMDeath: waiting"); |
| 391 | wait(); |
| 392 | } catch (InterruptedException e) { |
| 393 | } |
| 394 | } |
| 395 | traceln("JDI: waitForVMDeath: done waiting"); |
| 396 | |
| 397 | if (!vmDied) { |
| 398 | throw new VMDisconnectedException(); |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | public Event waitForRequestedEvent(final EventRequest request) { |
| 403 | class EventNotification { |
| 404 | Event event; |
| 405 | boolean disconnected = false; |
| 406 | } |
| 407 | final EventNotification en = new EventNotification(); |
| 408 | |
| 409 | TargetAdapter adapter = new TargetAdapter() { |
| 410 | public boolean eventReceived(Event event) { |
| 411 | if (request.equals(event.request())) { |
| 412 | synchronized (en) { |
| 413 | en.event = event; |
| 414 | en.notifyAll(); |
| 415 | } |
| 416 | return true; |
| 417 | } else if (event instanceof VMDisconnectEvent) { |
| 418 | synchronized (en) { |
| 419 | en.disconnected = true; |
| 420 | en.notifyAll(); |
| 421 | } |
| 422 | return true; |
| 423 | } else { |
| 424 | return false; |
| 425 | } |
| 426 | } |
| 427 | }; |
| 428 | |
| 429 | addListener(adapter); |
| 430 | |
| 431 | try { |
| 432 | synchronized (en) { |
| 433 | vm.resume(); |
| 434 | while (!en.disconnected && (en.event == null)) { |
| 435 | en.wait(); |
| 436 | } |
| 437 | } |
| 438 | } catch (InterruptedException e) { |
| 439 | return null; |
| 440 | } |
| 441 | |
| 442 | if (en.disconnected) { |
| 443 | throw new RuntimeException("VM Disconnected before requested event occurred"); |
| 444 | } |
| 445 | return en.event; |
| 446 | } |
| 447 | |
| 448 | private StepEvent doStep(ThreadReference thread, int gran, int depth) { |
| 449 | final StepRequest sr = |
| 450 | requestManager.createStepRequest(thread, gran, depth); |
| 451 | |
| 452 | sr.addClassExclusionFilter("java.*"); |
| 453 | sr.addClassExclusionFilter("sun.*"); |
| 454 | sr.addClassExclusionFilter("com.sun.*"); |
| 455 | sr.addCountFilter(1); |
| 456 | sr.enable(); |
| 457 | StepEvent retEvent = (StepEvent)waitForRequestedEvent(sr); |
| 458 | requestManager.deleteEventRequest(sr); |
| 459 | return retEvent; |
| 460 | } |
| 461 | |
| 462 | public StepEvent stepIntoInstruction(ThreadReference thread) { |
| 463 | return doStep(thread, StepRequest.STEP_MIN, StepRequest.STEP_INTO); |
| 464 | } |
| 465 | |
| 466 | public StepEvent stepIntoLine(ThreadReference thread) { |
| 467 | return doStep(thread, StepRequest.STEP_LINE, StepRequest.STEP_INTO); |
| 468 | } |
| 469 | |
| 470 | public StepEvent stepOverInstruction(ThreadReference thread) { |
| 471 | return doStep(thread, StepRequest.STEP_MIN, StepRequest.STEP_OVER); |
| 472 | } |
| 473 | |
| 474 | public StepEvent stepOverLine(ThreadReference thread) { |
| 475 | return doStep(thread, StepRequest.STEP_LINE, StepRequest.STEP_OVER); |
| 476 | } |
| 477 | |
| 478 | public StepEvent stepOut(ThreadReference thread) { |
| 479 | return doStep(thread, StepRequest.STEP_LINE, StepRequest.STEP_OUT); |
| 480 | } |
| 481 | |
| 482 | public BreakpointEvent resumeTo(Location loc) { |
| 483 | final BreakpointRequest request = |
| 484 | requestManager.createBreakpointRequest(loc); |
| 485 | request.addCountFilter(1); |
| 486 | request.enable(); |
| 487 | return (BreakpointEvent)waitForRequestedEvent(request); |
| 488 | } |
| 489 | |
| 490 | public ReferenceType findReferenceType(String name) { |
| 491 | List rts = vm.classesByName(name); |
| 492 | Iterator iter = rts.iterator(); |
| 493 | while (iter.hasNext()) { |
| 494 | ReferenceType rt = (ReferenceType)iter.next(); |
| 495 | if (rt.name().equals(name)) { |
| 496 | return rt; |
| 497 | } |
| 498 | } |
| 499 | return null; |
| 500 | } |
| 501 | |
| 502 | public Method findMethod(ReferenceType rt, String name, String signature) { |
| 503 | List methods = rt.methods(); |
| 504 | Iterator iter = methods.iterator(); |
| 505 | while (iter.hasNext()) { |
| 506 | Method method = (Method)iter.next(); |
| 507 | if (method.name().equals(name) && |
| 508 | method.signature().equals(signature)) { |
| 509 | return method; |
| 510 | } |
| 511 | } |
| 512 | return null; |
| 513 | } |
| 514 | |
| 515 | public Location findLocation(ReferenceType rt, int lineNumber) |
| 516 | throws AbsentInformationException { |
| 517 | List locs = rt.locationsOfLine(lineNumber); |
| 518 | if (locs.size() == 0) { |
| 519 | throw new IllegalArgumentException("Bad line number"); |
| 520 | } else if (locs.size() > 1) { |
| 521 | throw new IllegalArgumentException("Line number has multiple locations"); |
| 522 | } |
| 523 | |
| 524 | return (Location)locs.get(0); |
| 525 | } |
| 526 | |
| 527 | public BreakpointEvent resumeTo(String clsName, String methodName, |
| 528 | String methodSignature) { |
| 529 | ReferenceType rt = findReferenceType(clsName); |
| 530 | if (rt == null) { |
| 531 | rt = resumeToPrepareOf(clsName).referenceType(); |
| 532 | } |
| 533 | |
| 534 | Method method = findMethod(rt, methodName, methodSignature); |
| 535 | if (method == null) { |
| 536 | throw new IllegalArgumentException("Bad method name/signature"); |
| 537 | } |
| 538 | |
| 539 | return resumeTo(method.location()); |
| 540 | } |
| 541 | |
| 542 | public BreakpointEvent resumeTo(String clsName, int lineNumber) throws AbsentInformationException { |
| 543 | ReferenceType rt = findReferenceType(clsName); |
| 544 | if (rt == null) { |
| 545 | rt = resumeToPrepareOf(clsName).referenceType(); |
| 546 | } |
| 547 | |
| 548 | return resumeTo(findLocation(rt, lineNumber)); |
| 549 | } |
| 550 | |
| 551 | public ClassPrepareEvent resumeToPrepareOf(String className) { |
| 552 | final ClassPrepareRequest request = |
| 553 | requestManager.createClassPrepareRequest(); |
| 554 | request.addClassFilter(className); |
| 555 | request.addCountFilter(1); |
| 556 | request.enable(); |
| 557 | return (ClassPrepareEvent)waitForRequestedEvent(request); |
| 558 | } |
| 559 | |
| 560 | public void resumeToVMDeath() { |
| 561 | // If we are very close to VM death, we might get a VM disconnect |
| 562 | // before resume is complete. In that case ignore any VMDisconnectException |
| 563 | // and let the waitForVMDeath to clean up. |
| 564 | try { |
| 565 | traceln("JDI: resumeToVMDeath: resuming"); |
| 566 | vm.resume(); |
| 567 | traceln("JDI: resumeToVMDeath: resumed"); |
| 568 | } catch (VMDisconnectedException e) { |
| 569 | // clean up below |
| 570 | } |
| 571 | waitForVMDeath(); |
| 572 | } |
| 573 | |
| 574 | public void shutdown() { |
| 575 | shutdown(null); |
| 576 | } |
| 577 | |
| 578 | public void shutdown(String message) { |
| 579 | if ((connection != null) && !vmDied) { |
| 580 | try { |
| 581 | connection.disposeVM(); |
| 582 | } catch (VMDisconnectedException e) { |
| 583 | // Shutting down after the VM has gone away. This is |
| 584 | // not an error, and we just ignore it. |
| 585 | } |
| 586 | } |
| 587 | if (message != null) { |
| 588 | System.out.println(message); |
| 589 | } |
| 590 | } |
| 591 | } |