| 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.linuxtools.tmf.core.ctfadaptor; |
| 16 | |
| 17 | import java.nio.BufferOverflowException; |
| 18 | import java.nio.ByteBuffer; |
| 19 | import java.util.Map; |
| 20 | |
| 21 | import org.eclipse.core.resources.IProject; |
| 22 | import org.eclipse.core.resources.IResource; |
| 23 | import org.eclipse.core.runtime.IStatus; |
| 24 | import org.eclipse.core.runtime.Status; |
| 25 | import org.eclipse.linuxtools.ctf.core.event.CTFClock; |
| 26 | import org.eclipse.linuxtools.ctf.core.event.IEventDeclaration; |
| 27 | import org.eclipse.linuxtools.ctf.core.trace.CTFReaderException; |
| 28 | import org.eclipse.linuxtools.ctf.core.trace.CTFTrace; |
| 29 | import org.eclipse.linuxtools.ctf.core.trace.CTFTraceReader; |
| 30 | import org.eclipse.linuxtools.internal.tmf.core.Activator; |
| 31 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; |
| 32 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
| 33 | import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp; |
| 34 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp; |
| 35 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
| 36 | import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser; |
| 37 | import org.eclipse.linuxtools.tmf.core.trace.ITmfTraceProperties; |
| 38 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; |
| 39 | import org.eclipse.linuxtools.tmf.core.trace.TraceValidationStatus; |
| 40 | import org.eclipse.linuxtools.tmf.core.trace.indexer.ITmfPersistentlyIndexable; |
| 41 | import org.eclipse.linuxtools.tmf.core.trace.indexer.ITmfTraceIndexer; |
| 42 | import org.eclipse.linuxtools.tmf.core.trace.indexer.TmfBTreeTraceIndexer; |
| 43 | import org.eclipse.linuxtools.tmf.core.trace.indexer.checkpoint.ITmfCheckpoint; |
| 44 | import org.eclipse.linuxtools.tmf.core.trace.indexer.checkpoint.TmfCheckpoint; |
| 45 | import org.eclipse.linuxtools.tmf.core.trace.location.ITmfLocation; |
| 46 | |
| 47 | /** |
| 48 | * The CTf trace handler |
| 49 | * |
| 50 | * @version 1.0 |
| 51 | * @author Matthew khouzam |
| 52 | */ |
| 53 | public class CtfTmfTrace extends TmfTrace |
| 54 | implements ITmfEventParser, ITmfTraceProperties, ITmfPersistentlyIndexable { |
| 55 | |
| 56 | // ------------------------------------------- |
| 57 | // Constants |
| 58 | // ------------------------------------------- |
| 59 | /** |
| 60 | * Default cache size for CTF traces |
| 61 | */ |
| 62 | protected static final int DEFAULT_CACHE_SIZE = 50000; |
| 63 | |
| 64 | /* |
| 65 | * The Ctf clock unique identifier field |
| 66 | */ |
| 67 | private static final String CLOCK_HOST_PROPERTY = "uuid"; //$NON-NLS-1$ |
| 68 | private static final int CONFIDENCE = 10; |
| 69 | |
| 70 | // ------------------------------------------- |
| 71 | // Fields |
| 72 | // ------------------------------------------- |
| 73 | |
| 74 | /* Reference to the CTF Trace */ |
| 75 | private CTFTrace fTrace; |
| 76 | |
| 77 | // ------------------------------------------- |
| 78 | // TmfTrace Overrides |
| 79 | // ------------------------------------------- |
| 80 | /** |
| 81 | * Method initTrace. |
| 82 | * |
| 83 | * @param resource |
| 84 | * The resource associated with this trace |
| 85 | * @param path |
| 86 | * The path to the trace file |
| 87 | * @param eventType |
| 88 | * The type of events that will be read from this trace |
| 89 | * @throws TmfTraceException |
| 90 | * If something went wrong while reading the trace |
| 91 | */ |
| 92 | @Override |
| 93 | public void initTrace(final IResource resource, final String path, final Class<? extends ITmfEvent> eventType) |
| 94 | throws TmfTraceException { |
| 95 | /* |
| 96 | * Set the cache size. This has to be done before the call to super() |
| 97 | * because the super needs to know the cache size. |
| 98 | */ |
| 99 | setCacheSize(); |
| 100 | |
| 101 | super.initTrace(resource, path, eventType); |
| 102 | |
| 103 | try { |
| 104 | this.fTrace = new CTFTrace(path); |
| 105 | CtfIteratorManager.addTrace(this); |
| 106 | CtfTmfContext ctx; |
| 107 | /* Set the start and (current) end times for this trace */ |
| 108 | ctx = (CtfTmfContext) seekEvent(0L); |
| 109 | CtfTmfEvent event = getNext(ctx); |
| 110 | if ((ctx.getLocation().equals(CtfIterator.NULL_LOCATION)) || (ctx.getCurrentEvent() == null)) { |
| 111 | /* Handle the case where the trace is empty */ |
| 112 | this.setStartTime(TmfTimestamp.BIG_BANG); |
| 113 | } else { |
| 114 | final ITmfTimestamp curTime = event.getTimestamp(); |
| 115 | this.setStartTime(curTime); |
| 116 | this.setEndTime(curTime); |
| 117 | } |
| 118 | |
| 119 | } catch (final CTFReaderException e) { |
| 120 | /* |
| 121 | * If it failed at the init(), we can assume it's because the file |
| 122 | * was not found or was not recognized as a CTF trace. Throw into |
| 123 | * the new type of exception expected by the rest of TMF. |
| 124 | */ |
| 125 | throw new TmfTraceException(e.getMessage(), e); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | @Override |
| 130 | public synchronized void dispose() { |
| 131 | CtfIteratorManager.removeTrace(this); |
| 132 | if (fTrace != null) { |
| 133 | fTrace.dispose(); |
| 134 | fTrace = null; |
| 135 | } |
| 136 | super.dispose(); |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * {@inheritDoc} |
| 141 | * <p> |
| 142 | * The default implementation sets the confidence to 10 if the trace is a |
| 143 | * valid CTF trace. |
| 144 | */ |
| 145 | @Override |
| 146 | public IStatus validate(final IProject project, final String path) { |
| 147 | IStatus validTrace = new TraceValidationStatus(CONFIDENCE, Activator.PLUGIN_ID); |
| 148 | try { |
| 149 | final CTFTrace temp = new CTFTrace(path); |
| 150 | if (!temp.majorIsSet()) { |
| 151 | validTrace = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CtfTmfTrace_MajorNotSet); |
| 152 | } else { |
| 153 | CTFTraceReader ctfTraceReader = new CTFTraceReader(temp); |
| 154 | if (!ctfTraceReader.hasMoreEvents()) { |
| 155 | // TODO: This will need an additional check when we support live traces |
| 156 | // because having no event is valid for a live trace |
| 157 | validTrace = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CtfTmfTrace_NoEvent); |
| 158 | } |
| 159 | ctfTraceReader.dispose(); |
| 160 | } |
| 161 | temp.dispose(); |
| 162 | } catch (final CTFReaderException e) { |
| 163 | validTrace = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CtfTmfTrace_ReadingError +": " + e.toString()); //$NON-NLS-1$ |
| 164 | } catch (final BufferOverflowException e){ |
| 165 | validTrace = new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CtfTmfTrace_ReadingError +": " + Messages.CtfTmfTrace_BufferOverflowErrorMessage); //$NON-NLS-1$ |
| 166 | } |
| 167 | |
| 168 | return validTrace; |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Method getCurrentLocation. This is not applicable in CTF |
| 173 | * |
| 174 | * @return null, since the trace has no knowledge of the current location |
| 175 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getCurrentLocation() |
| 176 | * @since 3.0 |
| 177 | */ |
| 178 | @Override |
| 179 | public ITmfLocation getCurrentLocation() { |
| 180 | return null; |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * @since 3.0 |
| 185 | */ |
| 186 | @Override |
| 187 | public double getLocationRatio(ITmfLocation location) { |
| 188 | final CtfLocation curLocation = (CtfLocation) location; |
| 189 | final CtfTmfContext context = new CtfTmfContext(this); |
| 190 | context.setLocation(curLocation); |
| 191 | context.seek(curLocation.getLocationInfo()); |
| 192 | final CtfLocationInfo currentTime = ((CtfLocationInfo) context.getLocation().getLocationInfo()); |
| 193 | final long startTime = getIterator(this, context).getStartTime(); |
| 194 | final long endTime = getIterator(this, context).getEndTime(); |
| 195 | return ((double) currentTime.getTimestamp() - startTime) |
| 196 | / (endTime - startTime); |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * Method seekEvent. |
| 201 | * |
| 202 | * @param location |
| 203 | * ITmfLocation<?> |
| 204 | * @return ITmfContext |
| 205 | * @since 3.0 |
| 206 | */ |
| 207 | @Override |
| 208 | public synchronized ITmfContext seekEvent(final ITmfLocation location) { |
| 209 | CtfLocation currentLocation = (CtfLocation) location; |
| 210 | CtfTmfContext context = new CtfTmfContext(this); |
| 211 | if (fTrace == null) { |
| 212 | context.setLocation(null); |
| 213 | context.setRank(ITmfContext.UNKNOWN_RANK); |
| 214 | return context; |
| 215 | } |
| 216 | /* |
| 217 | * The rank is set to 0 if the iterator seeks the beginning. If not, it |
| 218 | * will be set to UNKNOWN_RANK, since CTF traces don't support seeking |
| 219 | * by rank for now. |
| 220 | */ |
| 221 | if (currentLocation == null) { |
| 222 | currentLocation = new CtfLocation(new CtfLocationInfo(0L, 0L)); |
| 223 | context.setRank(0); |
| 224 | } |
| 225 | if (currentLocation.getLocationInfo() == CtfLocation.INVALID_LOCATION) { |
| 226 | currentLocation = new CtfLocation(getEndTime().getValue() + 1, 0L); |
| 227 | } |
| 228 | context.setLocation(currentLocation); |
| 229 | if (location == null) { |
| 230 | CtfTmfEvent event = getIterator(this, context).getCurrentEvent(); |
| 231 | if (event != null) { |
| 232 | currentLocation = new CtfLocation(event.getTimestamp().getValue(), 0); |
| 233 | } |
| 234 | } |
| 235 | if (context.getRank() != 0) { |
| 236 | context.setRank(ITmfContext.UNKNOWN_RANK); |
| 237 | } |
| 238 | return context; |
| 239 | } |
| 240 | |
| 241 | @Override |
| 242 | public synchronized ITmfContext seekEvent(double ratio) { |
| 243 | CtfTmfContext context = new CtfTmfContext(this); |
| 244 | if (fTrace == null) { |
| 245 | context.setLocation(null); |
| 246 | context.setRank(ITmfContext.UNKNOWN_RANK); |
| 247 | return context; |
| 248 | } |
| 249 | final long end = this.getEndTime().getValue(); |
| 250 | final long start = this.getStartTime().getValue(); |
| 251 | final long diff = end - start; |
| 252 | final long ratioTs = Math.round(diff * ratio) + start; |
| 253 | context.seek(ratioTs); |
| 254 | context.setRank(ITmfContext.UNKNOWN_RANK); |
| 255 | return context; |
| 256 | } |
| 257 | |
| 258 | /** |
| 259 | * Method readNextEvent. |
| 260 | * |
| 261 | * @param context |
| 262 | * ITmfContext |
| 263 | * @return CtfTmfEvent |
| 264 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getNext(ITmfContext) |
| 265 | */ |
| 266 | @Override |
| 267 | public synchronized CtfTmfEvent getNext(final ITmfContext context) { |
| 268 | if (fTrace == null) { |
| 269 | return null; |
| 270 | } |
| 271 | CtfTmfEvent event = null; |
| 272 | if (context instanceof CtfTmfContext) { |
| 273 | if (context.getLocation() == null || CtfLocation.INVALID_LOCATION.equals(context.getLocation().getLocationInfo())) { |
| 274 | return null; |
| 275 | } |
| 276 | CtfTmfContext ctfContext = (CtfTmfContext) context; |
| 277 | event = ctfContext.getCurrentEvent(); |
| 278 | |
| 279 | if (event != null) { |
| 280 | updateAttributes(context, event.getTimestamp()); |
| 281 | ctfContext.advance(); |
| 282 | ctfContext.increaseRank(); |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | return event; |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * gets the CTFtrace that this is wrapping |
| 291 | * |
| 292 | * @return the CTF trace |
| 293 | */ |
| 294 | public CTFTrace getCTFTrace() { |
| 295 | return fTrace; |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * Ctf traces have a clock with a unique uuid that will be used to identify |
| 300 | * the host. Traces with the same clock uuid will be known to have been made |
| 301 | * on the same machine. |
| 302 | * |
| 303 | * Note: uuid is an optional field, it may not be there for a clock. |
| 304 | */ |
| 305 | @Override |
| 306 | public String getHostId() { |
| 307 | CTFClock clock = getCTFTrace().getClock(); |
| 308 | if (clock != null) { |
| 309 | String clockHost = (String) clock.getProperty(CLOCK_HOST_PROPERTY); |
| 310 | if (clockHost != null) { |
| 311 | return clockHost; |
| 312 | } |
| 313 | } |
| 314 | return super.getHostId(); |
| 315 | } |
| 316 | |
| 317 | // ------------------------------------------- |
| 318 | // ITmfTraceProperties |
| 319 | // ------------------------------------------- |
| 320 | |
| 321 | /** |
| 322 | * @since 2.0 |
| 323 | */ |
| 324 | @Override |
| 325 | public Map<String, String> getTraceProperties() { |
| 326 | return fTrace.getEnvironment(); |
| 327 | } |
| 328 | |
| 329 | // ------------------------------------------- |
| 330 | // Clocks |
| 331 | // ------------------------------------------- |
| 332 | |
| 333 | /** |
| 334 | * gets the clock offset |
| 335 | * |
| 336 | * @return the clock offset in ns |
| 337 | */ |
| 338 | public long getOffset() { |
| 339 | if (fTrace != null) { |
| 340 | return fTrace.getOffset(); |
| 341 | } |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Returns whether or not an event is in the metadata of the trace, |
| 347 | * therefore if it can possibly be in the trace. It does not verify whether |
| 348 | * or not the event is actually in the trace |
| 349 | * |
| 350 | * @param eventName |
| 351 | * The name of the event to check |
| 352 | * @return Whether the event is in the metadata or not |
| 353 | * @since 2.1 |
| 354 | */ |
| 355 | public boolean hasEvent(final String eventName) { |
| 356 | Map<Long, IEventDeclaration> events = fTrace.getEvents(0L); |
| 357 | if (events != null) { |
| 358 | for (IEventDeclaration decl : events.values()) { |
| 359 | if (decl.getName().equals(eventName)) { |
| 360 | return true; |
| 361 | } |
| 362 | } |
| 363 | } |
| 364 | return false; |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * Return whether all requested events are in the metadata |
| 369 | * |
| 370 | * @param names |
| 371 | * The array of events to check for |
| 372 | * @return Whether all events are in the metadata |
| 373 | * @since 2.1 |
| 374 | */ |
| 375 | public boolean hasAllEvents(String[] names) { |
| 376 | for (String name : names) { |
| 377 | if (!hasEvent(name)) { |
| 378 | return false; |
| 379 | } |
| 380 | } |
| 381 | return true; |
| 382 | } |
| 383 | |
| 384 | /** |
| 385 | * Returns whether the metadata contains at least one of the requested |
| 386 | * events |
| 387 | * |
| 388 | * @param names |
| 389 | * The array of event names of check for |
| 390 | * @return Whether one of the event is present in trace metadata |
| 391 | * @since 2.1 |
| 392 | */ |
| 393 | public boolean hasAtLeastOneOfEvents(String[] names) { |
| 394 | for (String name : names) { |
| 395 | if (hasEvent(name)) { |
| 396 | return true; |
| 397 | } |
| 398 | } |
| 399 | return false; |
| 400 | } |
| 401 | |
| 402 | // ------------------------------------------- |
| 403 | // Parser |
| 404 | // ------------------------------------------- |
| 405 | |
| 406 | @Override |
| 407 | public CtfTmfEvent parseEvent(ITmfContext context) { |
| 408 | CtfTmfEvent event = null; |
| 409 | if (context instanceof CtfTmfContext) { |
| 410 | final ITmfContext tmpContext = seekEvent(context.getLocation()); |
| 411 | event = getNext(tmpContext); |
| 412 | } |
| 413 | return event; |
| 414 | } |
| 415 | |
| 416 | /** |
| 417 | * Sets the cache size for a CtfTmfTrace. |
| 418 | */ |
| 419 | protected void setCacheSize() { |
| 420 | setCacheSize(DEFAULT_CACHE_SIZE); |
| 421 | } |
| 422 | |
| 423 | // ------------------------------------------- |
| 424 | // Helpers |
| 425 | // ------------------------------------------- |
| 426 | |
| 427 | private static CtfIterator getIterator(CtfTmfTrace trace, CtfTmfContext context) { |
| 428 | return CtfIteratorManager.getIterator(trace, context); |
| 429 | } |
| 430 | |
| 431 | /** |
| 432 | * Get an iterator to the trace |
| 433 | * |
| 434 | * @return an iterator to the trace |
| 435 | * @since 2.0 |
| 436 | */ |
| 437 | public CtfIterator createIterator() { |
| 438 | try { |
| 439 | return new CtfIterator(this); |
| 440 | } catch (CTFReaderException e) { |
| 441 | Activator.logError(e.getMessage(), e); |
| 442 | } |
| 443 | return null; |
| 444 | } |
| 445 | |
| 446 | // ------------------------------------------------------------------------ |
| 447 | // Timestamp transformation functions |
| 448 | // ------------------------------------------------------------------------ |
| 449 | |
| 450 | /** |
| 451 | * @since 3.0 |
| 452 | */ |
| 453 | @Override |
| 454 | public CtfTmfTimestamp createTimestamp(long ts) { |
| 455 | return new CtfTmfTimestamp(getTimestampTransform().transform(ts)); |
| 456 | } |
| 457 | |
| 458 | private static int fCheckpointSize = -1; |
| 459 | |
| 460 | /** |
| 461 | * @since 3.0 |
| 462 | */ |
| 463 | @Override |
| 464 | public synchronized int getCheckpointSize() { |
| 465 | if (fCheckpointSize == -1) { |
| 466 | TmfCheckpoint c = new TmfCheckpoint(new CtfTmfTimestamp(0), new CtfLocation(0, 0), 0); |
| 467 | ByteBuffer b = ByteBuffer.allocate(ITmfCheckpoint.MAX_SERIALIZE_SIZE); |
| 468 | b.clear(); |
| 469 | c.serialize(b); |
| 470 | fCheckpointSize = b.position(); |
| 471 | } |
| 472 | |
| 473 | return fCheckpointSize; |
| 474 | } |
| 475 | |
| 476 | @Override |
| 477 | protected ITmfTraceIndexer createIndexer(int interval) { |
| 478 | return new TmfBTreeTraceIndexer(this, interval); |
| 479 | } |
| 480 | |
| 481 | /** |
| 482 | * @since 3.0 |
| 483 | */ |
| 484 | @Override |
| 485 | public ITmfLocation restoreLocation(ByteBuffer bufferIn) { |
| 486 | return new CtfLocation(bufferIn); |
| 487 | } |
| 488 | } |