org.eclipse.tracecompass.tmf.ctf.core/src/org/eclipse/tracecompass/tmf/ctf/core/trace/CtfTmfTrace.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2014 Ericsson, École Polytechnique de Montréal
   3  *
   4  * All rights reserved. This program and the accompanying materials are made
   5  * available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Matthew Khouzam - Initial API and implementation
  11  *   Patrick Tasse - Updated for removal of context clone
  12  *   Geneviève Bastien - Added the createTimestamp function
  13  *******************************************************************************/
  14
  15 package org.eclipse.tracecompass.tmf.ctf.core.trace;
  16
  17 import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
  18
  19 import java.nio.BufferOverflowException;
  20 import java.nio.ByteBuffer;
  21 import java.util.ArrayList;
  22 import java.util.Collection;
  23 import java.util.Collections;
  24 import java.util.HashMap;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Set;
  28
  29 import org.eclipse.core.resources.IProject;
  30 import org.eclipse.core.resources.IResource;
  31 import org.eclipse.core.runtime.CoreException;
  32 import org.eclipse.core.runtime.IStatus;
  33 import org.eclipse.core.runtime.Status;
  34 import org.eclipse.jdt.annotation.NonNull;
  35 import org.eclipse.jdt.annotation.Nullable;
  36 import org.eclipse.tracecompass.ctf.core.CTFReaderException;
  37 import org.eclipse.tracecompass.ctf.core.event.CTFCallsite;
  38 import org.eclipse.tracecompass.ctf.core.event.CTFClock;
  39 import org.eclipse.tracecompass.ctf.core.event.IEventDeclaration;
  40 import org.eclipse.tracecompass.ctf.core.trace.CTFTrace;
  41 import org.eclipse.tracecompass.ctf.core.trace.CTFTraceReader;
  42 import org.eclipse.tracecompass.internal.tmf.ctf.core.Activator;
  43 import org.eclipse.tracecompass.internal.tmf.ctf.core.trace.iterator.CtfIterator;
  44 import org.eclipse.tracecompass.internal.tmf.ctf.core.trace.iterator.CtfIteratorManager;
  45 import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
  46 import org.eclipse.tracecompass.tmf.core.event.ITmfEventField;
  47 import org.eclipse.tracecompass.tmf.core.event.TmfEventField;
  48 import org.eclipse.tracecompass.tmf.core.event.aspect.ITmfEventAspect;
  49 import org.eclipse.tracecompass.tmf.core.exceptions.TmfTraceException;
  50 import org.eclipse.tracecompass.tmf.core.timestamp.ITmfTimestamp;
  51 import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimestamp;
  52 import org.eclipse.tracecompass.tmf.core.trace.ITmfContext;
  53 import org.eclipse.tracecompass.tmf.core.trace.ITmfTraceProperties;
  54 import org.eclipse.tracecompass.tmf.core.trace.ITmfTraceWithPreDefinedEvents;
  55 import org.eclipse.tracecompass.tmf.core.trace.TmfTrace;
  56 import org.eclipse.tracecompass.tmf.core.trace.TraceValidationStatus;
  57 import org.eclipse.tracecompass.tmf.core.trace.indexer.ITmfPersistentlyIndexable;
  58 import org.eclipse.tracecompass.tmf.core.trace.indexer.ITmfTraceIndexer;
  59 import org.eclipse.tracecompass.tmf.core.trace.indexer.TmfBTreeTraceIndexer;
  60 import org.eclipse.tracecompass.tmf.core.trace.indexer.checkpoint.ITmfCheckpoint;
  61 import org.eclipse.tracecompass.tmf.core.trace.indexer.checkpoint.TmfCheckpoint;
  62 import org.eclipse.tracecompass.tmf.core.trace.location.ITmfLocation;
  63 import org.eclipse.tracecompass.tmf.ctf.core.CtfConstants;
  64 import org.eclipse.tracecompass.tmf.ctf.core.context.CtfLocation;
  65 import org.eclipse.tracecompass.tmf.ctf.core.context.CtfLocationInfo;
  66 import org.eclipse.tracecompass.tmf.ctf.core.context.CtfTmfContext;
  67 import org.eclipse.tracecompass.tmf.ctf.core.event.CtfTmfEvent;
  68 import org.eclipse.tracecompass.tmf.ctf.core.event.CtfTmfEventType;
  69 import org.eclipse.tracecompass.tmf.ctf.core.event.aspect.CtfChannelAspect;
  70 import org.eclipse.tracecompass.tmf.ctf.core.event.aspect.CtfCpuAspect;
  71 import org.eclipse.tracecompass.tmf.ctf.core.event.lookup.CtfTmfCallsite;
  72 import org.eclipse.tracecompass.tmf.ctf.core.timestamp.CtfTmfTimestamp;
  73
  74 import com.google.common.collect.ImmutableList;
  75 import com.google.common.collect.ImmutableSet;
  76
  77 /**
  78  * The CTf trace handler
  79  *
  80  * @version 1.0
  81  * @author Matthew khouzam
  82  */
  83 public class CtfTmfTrace extends TmfTrace
  84         implements ITmfTraceProperties, ITmfPersistentlyIndexable,
  85         ITmfTraceWithPreDefinedEvents, AutoCloseable {
  86
  87     // -------------------------------------------
  88     // Constants
  89     // -------------------------------------------
  90
  91     /**
  92      * Default cache size for CTF traces
  93      */
  94     protected static final int DEFAULT_CACHE_SIZE = 50000;
  95
  96     /**
  97      * Event aspects available for all CTF traces
  98      */
  99     protected static final @NonNull Collection<ITmfEventAspect> CTF_ASPECTS =
 100             checkNotNull(ImmutableList.of(
 101                     ITmfEventAspect.BaseAspects.TIMESTAMP,
 102                     new CtfChannelAspect(),
 103                     new CtfCpuAspect(),
 104                     ITmfEventAspect.BaseAspects.EVENT_TYPE,
 105                     ITmfEventAspect.BaseAspects.CONTENTS
 106                     ));
 107
 108     /**
 109      * The Ctf clock unique identifier field
 110      */
 111     private static final String CLOCK_HOST_PROPERTY = "uuid"; //$NON-NLS-1$
 112     private static final int CONFIDENCE = 10;
 113
 114     // -------------------------------------------
 115     // Fields
 116     // -------------------------------------------
 117
 118     private final Map<String, CtfTmfEventType> fContainedEventTypes =
 119             Collections.synchronizedMap(new HashMap<String, CtfTmfEventType>());
 120
 121     private final CtfIteratorManager fIteratorManager =
 122             new CtfIteratorManager(this);
 123
 124     /* Reference to the CTF Trace */
 125     private CTFTrace fTrace;
 126
 127     // -------------------------------------------
 128     // TmfTrace Overrides
 129     // -------------------------------------------
 130     /**
 131      * Method initTrace.
 132      *
 133      * @param resource
 134      *            The resource associated with this trace
 135      * @param path
 136      *            The path to the trace file
 137      * @param eventType
 138      *            The type of events that will be read from this trace
 139      * @throws TmfTraceException
 140      *             If something went wrong while reading the trace
 141      */
 142     @Override
 143     public void initTrace(final IResource resource, final String path, final Class<? extends ITmfEvent> eventType)
 144             throws TmfTraceException {
 145         /*
 146          * Set the cache size. This has to be done before the call to super()
 147          * because the super needs to know the cache size.
 148          */
 149         setCacheSize();
 150
 151         super.initTrace(resource, path, eventType);
 152
 153         try {
 154             this.fTrace = new CTFTrace(path);
 155             CtfTmfContext ctx;
 156             /* Set the start and (current) end times for this trace */
 157             ctx = (CtfTmfContext) seekEvent(0L);
 158             CtfTmfEvent event = getNext(ctx);
 159             if ((ctx.getLocation().equals(CtfIterator.NULL_LOCATION)) || (ctx.getCurrentEvent() == null)) {
 160                 /* Handle the case where the trace is empty */
 161                 this.setStartTime(TmfTimestamp.BIG_BANG);
 162             } else {
 163                 final ITmfTimestamp curTime = event.getTimestamp();
 164                 this.setStartTime(curTime);
 165                 this.setEndTime(curTime);
 166             }
 167             /*
 168              * Register every event type. When you call getType, it will
 169              * register a trace to that type in the TmfEventTypeManager
 170              */
 171             try (CtfIterator iter = fIteratorManager.getIterator(ctx)) {
 172                 for (IEventDeclaration ied : iter.getEventDeclarations()) {
 173                     CtfTmfEventType ctfTmfEventType = fContainedEventTypes.get(ied.getName());
 174                     if (ctfTmfEventType == null) {
 175                         List<ITmfEventField> content = new ArrayList<>();
 176                         /* Should only return null the first time */
 177                         for (String fieldName : ied.getFields().getFieldsList()) {
 178                             content.add(new TmfEventField(fieldName, null, null));
 179                         }
 180                         ITmfEventField contentTree = new TmfEventField(
 181                                 ITmfEventField.ROOT_FIELD_ID,
 182                                 null,
 183                                 content.toArray(new ITmfEventField[content.size()])
 184                                 );
 185
 186                         ctfTmfEventType = new CtfTmfEventType(ied.getName(), contentTree);
 187                         fContainedEventTypes.put(ctfTmfEventType.getName(), ctfTmfEventType);
 188                     }
 189                 }
 190             }
 191         } catch (final CTFReaderException e) {
 192             /*
 193              * If it failed at the init(), we can assume it's because the file
 194              * was not found or was not recognized as a CTF trace. Throw into
 195              * the new type of exception expected by the rest of TMF.
 196              */
 197             throw new TmfTraceException(e.getMessage(), e);
 198         }
 199     }
 200
 201     /**
 202      * Return the iterator manager of this trace
 203      *
 204      * @return The iterator manager
 205      */
 206     public CtfIteratorManager getIteratorManager() {
 207         return fIteratorManager;
 208     }
 209
 210     @Override
 211     public void close() {
 212         dispose();
 213     }
 214
 215     @Override
 216     public synchronized void dispose() {
 217         fIteratorManager.dispose();
 218         if (fTrace != null) {
 219             fTrace = null;
 220         }
 221         super.dispose();
 222     }
 223
 224     /**
 225      * {@inheritDoc}
 226      * <p>
 227      * The default implementation sets the confidence to 10 if the trace is a
 228      * valid CTF trace.
 229      */
 230     @Override
 231     public IStatus validate(final IProject project, final String path) {
 232         IStatus status = new TraceValidationStatus(CONFIDENCE, Activator.PLUGIN_ID);
 233         try {
 234             final CTFTrace temp = new CTFTrace(path);
 235             if (!temp.majorIsSet()) {
 236                 status = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CtfTmfTrace_MajorNotSet);
 237             } else {
 238                 try (CTFTraceReader ctfTraceReader = new CTFTraceReader(temp);) {
 239                     if (!ctfTraceReader.hasMoreEvents()) {
 240                         // TODO: This will need an additional check when we
 241                         // support live traces
 242                         // because having no event is valid for a live trace
 243                         status = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CtfTmfTrace_NoEvent);
 244                     }
 245                 }
 246             }
 247         } catch (final CTFReaderException e) {
 248             status = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CtfTmfTrace_ReadingError + ": " + e.toString()); //$NON-NLS-1$
 249         } catch (final BufferOverflowException e) {
 250             status = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CtfTmfTrace_ReadingError + ": " + Messages.CtfTmfTrace_BufferOverflowErrorMessage); //$NON-NLS-1$
 251         }
 252
 253         return status;
 254     }
 255
 256     @Override
 257     public Iterable<ITmfEventAspect> getEventAspects() {
 258         return CTF_ASPECTS;
 259     }
 260
 261     /**
 262      * Method getCurrentLocation. This is not applicable in CTF
 263      *
 264      * @return null, since the trace has no knowledge of the current location
 265      * @see org.eclipse.tracecompass.tmf.core.trace.ITmfTrace#getCurrentLocation()
 266      */
 267     @Override
 268     public ITmfLocation getCurrentLocation() {
 269         return null;
 270     }
 271
 272     @Override
 273     public double getLocationRatio(ITmfLocation location) {
 274         final CtfLocation curLocation = (CtfLocation) location;
 275         final CtfTmfContext context = new CtfTmfContext(this);
 276         context.setLocation(curLocation);
 277         context.seek(curLocation.getLocationInfo());
 278         final CtfLocationInfo currentTime = ((CtfLocationInfo) context.getLocation().getLocationInfo());
 279         final long startTime = fIteratorManager.getIterator(context).getStartTime();
 280         final long endTime = fIteratorManager.getIterator(context).getEndTime();
 281         return ((double) currentTime.getTimestamp() - startTime)
 282                 / (endTime - startTime);
 283     }
 284
 285     /**
 286      * Method seekEvent.
 287      *
 288      * @param location
 289      *            ITmfLocation<?>
 290      * @return ITmfContext
 291      */
 292     @Override
 293     public synchronized ITmfContext seekEvent(final ITmfLocation location) {
 294         CtfLocation currentLocation = (CtfLocation) location;
 295         CtfTmfContext context = new CtfTmfContext(this);
 296         if (fTrace == null) {
 297             context.setLocation(null);
 298             context.setRank(ITmfContext.UNKNOWN_RANK);
 299             return context;
 300         }
 301         /*
 302          * The rank is set to 0 if the iterator seeks the beginning. If not, it
 303          * will be set to UNKNOWN_RANK, since CTF traces don't support seeking
 304          * by rank for now.
 305          */
 306         if (currentLocation == null) {
 307             currentLocation = new CtfLocation(new CtfLocationInfo(0L, 0L));
 308             context.setRank(0);
 309         }
 310         if (currentLocation.getLocationInfo() == CtfLocation.INVALID_LOCATION) {
 311             currentLocation = new CtfLocation(fTrace.getCurrentEndTime() + 1, 0L);
 312         }
 313         context.setLocation(currentLocation);
 314         if (location == null) {
 315             long timestamp = fIteratorManager.getIterator(context).getCurrentTimestamp();
 316             currentLocation = new CtfLocation(timestamp, 0);
 317         }
 318         if (context.getRank() != 0) {
 319             context.setRank(ITmfContext.UNKNOWN_RANK);
 320         }
 321         return context;
 322     }
 323
 324     @Override
 325     public synchronized ITmfContext seekEvent(double ratio) {
 326         CtfTmfContext context = new CtfTmfContext(this);
 327         if (fTrace == null) {
 328             context.setLocation(null);
 329             context.setRank(ITmfContext.UNKNOWN_RANK);
 330             return context;
 331         }
 332         final long end = fTrace.getCurrentEndTime();
 333         final long start = fTrace.getCurrentStartTime();
 334         final long diff = end - start;
 335         final long ratioTs = Math.round(diff * ratio) + start;
 336         context.seek(ratioTs);
 337         context.setRank(ITmfContext.UNKNOWN_RANK);
 338         return context;
 339     }
 340
 341     /**
 342      * Method readNextEvent.
 343      *
 344      * @param context
 345      *            ITmfContext
 346      * @return CtfTmfEvent
 347      * @see org.eclipse.tracecompass.tmf.core.trace.ITmfTrace#getNext(ITmfContext)
 348      */
 349     @Override
 350     public synchronized CtfTmfEvent getNext(final ITmfContext context) {
 351         if (fTrace == null) {
 352             return null;
 353         }
 354         CtfTmfEvent event = null;
 355         if (context instanceof CtfTmfContext) {
 356             if (context.getLocation() == null || CtfLocation.INVALID_LOCATION.equals(context.getLocation().getLocationInfo())) {
 357                 return null;
 358             }
 359             CtfTmfContext ctfContext = (CtfTmfContext) context;
 360             event = ctfContext.getCurrentEvent();
 361
 362             if (event != null) {
 363                 updateAttributes(context, event.getTimestamp());
 364                 ctfContext.advance();
 365                 ctfContext.increaseRank();
 366             }
 367         }
 368
 369         return event;
 370     }
 371
 372     /**
 373      * Ctf traces have a clock with a unique uuid that will be used to identify
 374      * the host. Traces with the same clock uuid will be known to have been made
 375      * on the same machine.
 376      *
 377      * Note: uuid is an optional field, it may not be there for a clock.
 378      */
 379     @Override
 380     public String getHostId() {
 381         CTFClock clock = fTrace.getClock();
 382         if (clock != null) {
 383             String clockHost = (String) clock.getProperty(CLOCK_HOST_PROPERTY);
 384             if (clockHost != null) {
 385                 return clockHost;
 386             }
 387         }
 388         return super.getHostId();
 389     }
 390
 391     /**
 392      * Get the first callsite that matches the event name
 393      *
 394      * @param eventName The event name to look for
 395      * @return The best callsite candidate
 396      */
 397     public @Nullable CtfTmfCallsite getCallsite(String eventName) {
 398         CTFCallsite callsite = fTrace.getCallsite(eventName);
 399         if (callsite != null) {
 400             return new CtfTmfCallsite(callsite);
 401         }
 402         return null;
 403     }
 404
 405     /**
 406      * Get the closest matching callsite for given event name and instruction
 407      * pointer
 408      *
 409      * @param eventName
 410      *            The event name
 411      * @param ip
 412      *            The instruction pointer
 413      * @return The closest matching callsite
 414      */
 415     public @Nullable CtfTmfCallsite getCallsite(String eventName, long ip) {
 416         CTFCallsite calliste = fTrace.getCallsite(eventName, ip);
 417         if (calliste != null) {
 418             return new CtfTmfCallsite(calliste);
 419         }
 420         return null;
 421     }
 422
 423     /**
 424      * Get the CTF environment variables defined in this CTF trace, in <name,
 425      * value> form. This comes from the trace's CTF metadata.
 426      *
 427      * @return The CTF environment
 428      */
 429     public Map<String, String> getEnvironment() {
 430         return fTrace.getEnvironment();
 431     }
 432
 433     // -------------------------------------------
 434     // ITmfTraceProperties
 435     // -------------------------------------------
 436
 437     @Override
 438     public Map<String, String> getTraceProperties() {
 439         Map<String, String> properties = new HashMap<>();
 440         properties.putAll(fTrace.getEnvironment());
 441         properties.put(Messages.CtfTmfTrace_HostID, getHostId());
 442         return properties;
 443     }
 444
 445     // -------------------------------------------
 446     // Clocks
 447     // -------------------------------------------
 448
 449     /**
 450      * gets the clock offset
 451      *
 452      * @return the clock offset in ns
 453      */
 454     public long getOffset() {
 455         if (fTrace != null) {
 456             return fTrace.getOffset();
 457         }
 458         return 0;
 459     }
 460
 461     /**
 462      * Convert a CTF timestamp in CPU cycles to its equivalent in nanoseconds
 463      * for this trace.
 464      *
 465      * @param cycles
 466      *            The timestamp in cycles
 467      * @return The timestamp in nanoseconds
 468      */
 469     public long timestampCyclesToNanos(long cycles) {
 470         return fTrace.timestampCyclesToNanos(cycles);
 471     }
 472
 473     /**
 474      * Convert a CTF timestamp in nanoseconds to its equivalent in CPU cycles
 475      * for this trace.
 476      *
 477      * @param nanos
 478      *            The timestamp in nanoseconds
 479      * @return The timestamp in cycles
 480      */
 481     public long timestampNanoToCycles(long nanos) {
 482         return fTrace.timestampNanoToCycles(nanos);
 483     }
 484
 485     /**
 486      * Gets the list of declared events
 487      */
 488     @Override
 489     public Set<CtfTmfEventType> getContainedEventTypes() {
 490         return ImmutableSet.copyOf(fContainedEventTypes.values());
 491     }
 492
 493     /**
 494      * Register an event type to this trace.
 495      *
 496      * Public visibility so that {@link CtfTmfEvent#getType} can call it.
 497      *
 498      * FIXME This could probably be made cleaner?
 499      *
 500      * @param eventType
 501      *            The event type to register
 502      */
 503     public void registerEventType(CtfTmfEventType eventType) {
 504         fContainedEventTypes.put(eventType.getName(), eventType);
 505     }
 506
 507     // -------------------------------------------
 508     // Parser
 509     // -------------------------------------------
 510
 511     @Override
 512     public CtfTmfEvent parseEvent(ITmfContext context) {
 513         CtfTmfEvent event = null;
 514         if (context instanceof CtfTmfContext) {
 515             final ITmfContext tmpContext = seekEvent(context.getLocation());
 516             event = getNext(tmpContext);
 517         }
 518         return event;
 519     }
 520
 521     /**
 522      * Sets the cache size for a CtfTmfTrace.
 523      */
 524     protected void setCacheSize() {
 525         setCacheSize(DEFAULT_CACHE_SIZE);
 526     }
 527
 528     // -------------------------------------------
 529     // CtfIterator factory methods
 530     // -------------------------------------------
 531
 532     /**
 533      * Get an iterator to the trace
 534      *
 535      * @return an iterator to the trace
 536      */
 537     public ITmfContext createIterator() {
 538         try {
 539             return new CtfIterator(fTrace, this);
 540         } catch (CTFReaderException e) {
 541             Activator.getDefault().logError(e.getMessage(), e);
 542         }
 543         return null;
 544     }
 545
 546     /**
 547      * Get an iterator to the trace, , which will initially point to the given
 548      * location/rank.
 549      *
 550      * @param ctfLocationData
 551      *            The initial timestamp the iterator will be pointing to
 552      * @param rank
 553      *            The initial rank
 554      * @return The new iterator
 555      */
 556     public ITmfContext createIterator(CtfLocationInfo ctfLocationData, long rank) {
 557         try {
 558             return new CtfIterator(fTrace, this, ctfLocationData, rank);
 559         } catch (CTFReaderException e) {
 560             Activator.getDefault().logError(e.getMessage(), e);
 561         }
 562         return null;
 563     }
 564
 565     // ------------------------------------------------------------------------
 566     // Timestamp transformation functions
 567     // ------------------------------------------------------------------------
 568
 569     @Override
 570     public CtfTmfTimestamp createTimestamp(long ts) {
 571         return new CtfTmfTimestamp(getTimestampTransform().transform(ts));
 572     }
 573
 574     private static int fCheckpointSize = -1;
 575
 576     @Override
 577     public synchronized int getCheckpointSize() {
 578         if (fCheckpointSize == -1) {
 579             TmfCheckpoint c = new TmfCheckpoint(new CtfTmfTimestamp(0), new CtfLocation(0, 0), 0);
 580             ByteBuffer b = ByteBuffer.allocate(ITmfCheckpoint.MAX_SERIALIZE_SIZE);
 581             b.clear();
 582             c.serialize(b);
 583             fCheckpointSize = b.position();
 584         }
 585
 586         return fCheckpointSize;
 587     }
 588
 589     @Override
 590     protected ITmfTraceIndexer createIndexer(int interval) {
 591         return new TmfBTreeTraceIndexer(this, interval);
 592     }
 593
 594     @Override
 595     public ITmfLocation restoreLocation(ByteBuffer bufferIn) {
 596         return new CtfLocation(bufferIn);
 597     }
 598
 599     @Override
 600     public boolean isComplete() {
 601         if (getResource() == null) {
 602             return true;
 603         }
 604
 605         String host = null;
 606         String port = null;
 607         String sessionName = null;
 608         try {
 609             host = getResource().getPersistentProperty(CtfConstants.LIVE_HOST);
 610             port = getResource().getPersistentProperty(CtfConstants.LIVE_PORT);
 611             sessionName = getResource().getPersistentProperty(CtfConstants.LIVE_SESSION_NAME);
 612         } catch (CoreException e) {
 613             Activator.getDefault().logError(e.getMessage(), e);
 614             // Something happened to the resource, assume we won't get any more
 615             // data from it
 616             return true;
 617         }
 618         return host == null || port == null || sessionName == null;
 619     }
 620
 621     @Override
 622     public void setComplete(final boolean isComplete) {
 623         super.setComplete(isComplete);
 624         try {
 625             if (isComplete) {
 626                 getResource().setPersistentProperty(CtfConstants.LIVE_HOST, null);
 627                 getResource().setPersistentProperty(CtfConstants.LIVE_PORT, null);
 628                 getResource().setPersistentProperty(CtfConstants.LIVE_SESSION_NAME, null);
 629             }
 630         } catch (CoreException e) {
 631             Activator.getDefault().logError(e.getMessage(), e);
 632         }
 633     }
 634 }