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8c8bf09f | 1 | /******************************************************************************* |
61759503 | 2 | * Copyright (c) 2009, 2013 Ericsson |
0bfb7d06 | 3 | * |
8c8bf09f ASL |
4 | * All rights reserved. This program and the accompanying materials are |
5 | * made 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 | |
0bfb7d06 | 8 | * |
8c8bf09f | 9 | * Contributors: |
20658947 FC |
10 | * Francois Chouinard - Initial API and implementation |
11 | * Francois Chouinard - Updated as per TMF Trace Model 1.0 | |
ea271da6 | 12 | * Patrick Tasse - Updated for removal of context clone |
8c8bf09f ASL |
13 | *******************************************************************************/ |
14 | ||
6c13869b | 15 | package org.eclipse.linuxtools.tmf.core.trace; |
8c8bf09f | 16 | |
6f4a1d2b | 17 | import java.io.File; |
35c160d9 AM |
18 | import java.util.Collections; |
19 | import java.util.LinkedHashMap; | |
a51b2b9f | 20 | import java.util.Map; |
8c8bf09f | 21 | |
828e5592 | 22 | import org.eclipse.core.resources.IResource; |
faa38350 | 23 | import org.eclipse.core.runtime.CoreException; |
9b749023 | 24 | import org.eclipse.core.runtime.IPath; |
42459d24 AM |
25 | import org.eclipse.core.runtime.IStatus; |
26 | import org.eclipse.core.runtime.Status; | |
6c13869b | 27 | import org.eclipse.linuxtools.tmf.core.component.TmfEventProvider; |
72f1e62a | 28 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; |
b4f71e4a | 29 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
5419a136 AM |
30 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest; |
31 | import org.eclipse.linuxtools.tmf.core.request.ITmfEventRequest; | |
faa38350 | 32 | import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler; |
fec1ac0b | 33 | import org.eclipse.linuxtools.tmf.core.signal.TmfSignalManager; |
faa38350 PT |
34 | import org.eclipse.linuxtools.tmf.core.signal.TmfTraceOpenedSignal; |
35 | import org.eclipse.linuxtools.tmf.core.signal.TmfTraceRangeUpdatedSignal; | |
7898bb21 | 36 | import org.eclipse.linuxtools.tmf.core.statesystem.ITmfStateSystem; |
200789b3 | 37 | import org.eclipse.linuxtools.tmf.core.statistics.ITmfStatistics; |
1c0de632 | 38 | import org.eclipse.linuxtools.tmf.core.statistics.TmfStateStatistics; |
3bd46eef AM |
39 | import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp; |
40 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimeRange; | |
41 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp; | |
8c8bf09f ASL |
42 | |
43 | /** | |
09e86496 FC |
44 | * Abstract implementation of ITmfTrace. |
45 | * <p> | |
13cb5f43 FC |
46 | * Since the concept of 'location' is trace specific, the concrete classes have |
47 | * to provide the related methods, namely: | |
48 | * <ul> | |
49 | * <li> public ITmfLocation<?> getCurrentLocation() | |
50 | * <li> public double getLocationRatio(ITmfLocation<?> location) | |
51 | * <li> public ITmfContext seekEvent(ITmfLocation<?> location) | |
52 | * <li> public ITmfContext seekEvent(double ratio) | |
da1a4b39 | 53 | * <li> public IStatus validate(IProject project, String path) |
13cb5f43 FC |
54 | * </ul> |
55 | * A concrete trace must provide its corresponding parser. A common way to | |
56 | * accomplish this is by making the concrete class extend TmfTrace and | |
57 | * implement ITmfEventParser. | |
58 | * <p> | |
59 | * The concrete class can either specify its own indexer or use the provided | |
60 | * TmfCheckpointIndexer (default). In this case, the trace cache size will be | |
61 | * used as checkpoint interval. | |
0bfb7d06 | 62 | * |
f7703ed6 FC |
63 | * @version 1.0 |
64 | * @author Francois Chouinard | |
65 | * | |
f7703ed6 FC |
66 | * @see ITmfEvent |
67 | * @see ITmfTraceIndexer | |
68 | * @see ITmfEventParser | |
8c8bf09f | 69 | */ |
6256d8ad | 70 | public abstract class TmfTrace extends TmfEventProvider implements ITmfTrace { |
62d1696a | 71 | |
e31e01e8 | 72 | // ------------------------------------------------------------------------ |
8c8bf09f | 73 | // Attributes |
e31e01e8 | 74 | // ------------------------------------------------------------------------ |
8c8bf09f | 75 | |
09e86496 FC |
76 | // The resource used for persistent properties for this trace |
77 | private IResource fResource; | |
78 | ||
b0a282fb | 79 | // The trace path |
12c155f5 | 80 | private String fPath; |
b0a282fb | 81 | |
0316808c FC |
82 | // The trace cache page size |
83 | private int fCacheSize = ITmfTrace.DEFAULT_TRACE_CACHE_SIZE; | |
62d1696a | 84 | |
0316808c FC |
85 | // The number of events collected (so far) |
86 | private long fNbEvents = 0; | |
62d1696a FC |
87 | |
88 | // The time span of the event stream | |
9cbe7899 | 89 | private ITmfTimestamp fStartTime = TmfTimestamp.BIG_BANG; |
a4115405 | 90 | private ITmfTimestamp fEndTime = TmfTimestamp.BIG_BANG; |
62d1696a | 91 | |
0316808c FC |
92 | // The trace streaming interval (0 = no streaming) |
93 | private long fStreamingInterval = 0; | |
085d898f | 94 | |
0316808c | 95 | // The trace indexer |
6256d8ad | 96 | private ITmfTraceIndexer fIndexer; |
20658947 | 97 | |
0316808c | 98 | // The trace parser |
6256d8ad | 99 | private ITmfEventParser fParser; |
7e6347b0 | 100 | |
200789b3 AM |
101 | // The trace's statistics |
102 | private ITmfStatistics fStatistics; | |
103 | ||
a51b2b9f AM |
104 | /** |
105 | * The collection of state systems that are registered with this trace. Each | |
106 | * sub-class can decide to add its (one or many) state system to this map | |
107 | * during their {@link #buildStateSystem()}. | |
108 | * | |
109 | * @since 2.0 | |
110 | */ | |
111 | protected final Map<String, ITmfStateSystem> fStateSystems = | |
35c160d9 | 112 | new LinkedHashMap<String, ITmfStateSystem>(); |
a51b2b9f | 113 | |
e31e01e8 | 114 | // ------------------------------------------------------------------------ |
3791b5df | 115 | // Construction |
e31e01e8 | 116 | // ------------------------------------------------------------------------ |
8c8bf09f | 117 | |
62d1696a | 118 | /** |
3791b5df | 119 | * The default, parameterless, constructor |
62d1696a | 120 | */ |
3791b5df FC |
121 | public TmfTrace() { |
122 | super(); | |
05bd3318 FC |
123 | } |
124 | ||
125 | /** | |
8cf330ae | 126 | * Full constructor. |
0bfb7d06 | 127 | * |
8cf330ae AM |
128 | * @param resource |
129 | * The resource associated to the trace | |
130 | * @param type | |
131 | * The type of events that will be read from this trace | |
132 | * @param path | |
133 | * The path to the trace on the filesystem | |
134 | * @param cacheSize | |
135 | * The trace cache size. Pass '-1' to use the default specified | |
136 | * in {@link ITmfTrace#DEFAULT_TRACE_CACHE_SIZE} | |
137 | * @param interval | |
138 | * The trace streaming interval. You can use '0' for post-mortem | |
139 | * traces. | |
140 | * @param indexer | |
141 | * The trace indexer. You can pass 'null' to use a default | |
142 | * checkpoint indexer. | |
143 | * @param parser | |
144 | * The trace event parser. Use 'null' if (and only if) the trace | |
145 | * object itself is also the ITmfEventParser to be used. | |
146 | * @throws TmfTraceException | |
147 | * If something failed during the opening | |
20658947 | 148 | */ |
8cf330ae AM |
149 | protected TmfTrace(final IResource resource, |
150 | final Class<? extends ITmfEvent> type, | |
151 | final String path, | |
152 | final int cacheSize, | |
153 | final long interval, | |
154 | final ITmfTraceIndexer indexer, | |
155 | final ITmfEventParser parser) | |
156 | throws TmfTraceException { | |
00641a97 | 157 | super(); |
0316808c | 158 | fCacheSize = (cacheSize > 0) ? cacheSize : ITmfTrace.DEFAULT_TRACE_CACHE_SIZE; |
3791b5df | 159 | fStreamingInterval = interval; |
7e6347b0 | 160 | fIndexer = (indexer != null) ? indexer : new TmfCheckpointIndexer(this, fCacheSize); |
13cb5f43 | 161 | fParser = parser; |
09e86496 | 162 | initialize(resource, path, type); |
8c8bf09f ASL |
163 | } |
164 | ||
3791b5df FC |
165 | /** |
166 | * Copy constructor | |
0bfb7d06 | 167 | * |
3791b5df | 168 | * @param trace the original trace |
063f0d27 | 169 | * @throws TmfTraceException Should not happen usually |
3791b5df | 170 | */ |
6256d8ad | 171 | public TmfTrace(final TmfTrace trace) throws TmfTraceException { |
3791b5df | 172 | super(); |
0316808c | 173 | if (trace == null) { |
3791b5df | 174 | throw new IllegalArgumentException(); |
0316808c | 175 | } |
20658947 FC |
176 | fCacheSize = trace.getCacheSize(); |
177 | fStreamingInterval = trace.getStreamingInterval(); | |
7e6347b0 | 178 | fIndexer = new TmfCheckpointIndexer(this); |
13cb5f43 FC |
179 | fParser = trace.fParser; |
180 | initialize(trace.getResource(), trace.getPath(), trace.getEventType()); | |
3791b5df FC |
181 | } |
182 | ||
7e6347b0 FC |
183 | // ------------------------------------------------------------------------ |
184 | // ITmfTrace - Initializers | |
185 | // ------------------------------------------------------------------------ | |
186 | ||
7e6347b0 | 187 | @Override |
6256d8ad | 188 | public void initTrace(final IResource resource, final String path, final Class<? extends ITmfEvent> type) throws TmfTraceException { |
9dc3dee2 | 189 | fIndexer = new TmfCheckpointIndexer(this, fCacheSize); |
7e6347b0 | 190 | initialize(resource, path, type); |
7e6347b0 FC |
191 | } |
192 | ||
09e86496 | 193 | /** |
1703b536 | 194 | * Initialize the trace common attributes and the base component. |
0bfb7d06 MK |
195 | * |
196 | * @param resource the Eclipse resource (trace) | |
1703b536 FC |
197 | * @param path the trace path |
198 | * @param type the trace event type | |
0bfb7d06 | 199 | * |
6f4e8ec0 | 200 | * @throws TmfTraceException If something failed during the initialization |
3791b5df | 201 | */ |
248af329 AM |
202 | protected void initialize(final IResource resource, |
203 | final String path, | |
204 | final Class<? extends ITmfEvent> type) | |
205 | throws TmfTraceException { | |
0316808c | 206 | if (path == null) { |
b4f71e4a | 207 | throw new TmfTraceException("Invalid trace path"); //$NON-NLS-1$ |
0316808c | 208 | } |
3791b5df | 209 | fPath = path; |
1703b536 | 210 | fResource = resource; |
25e48683 | 211 | String traceName = (resource != null) ? resource.getName() : null; |
1703b536 FC |
212 | // If no resource was provided, extract the display name the trace path |
213 | if (traceName == null) { | |
9b749023 | 214 | final int sep = path.lastIndexOf(IPath.SEPARATOR); |
1703b536 FC |
215 | traceName = (sep >= 0) ? path.substring(sep + 1) : path; |
216 | } | |
2352aed9 FC |
217 | if (fParser == null) { |
218 | if (this instanceof ITmfEventParser) { | |
6256d8ad | 219 | fParser = (ITmfEventParser) this; |
2352aed9 FC |
220 | } else { |
221 | throw new TmfTraceException("Invalid trace parser"); //$NON-NLS-1$ | |
222 | } | |
223 | } | |
3791b5df | 224 | super.init(traceName, type); |
fec1ac0b BH |
225 | // register as VIP after super.init() because TmfComponent registers to signal manager there |
226 | TmfSignalManager.registerVIP(this); | |
3791b5df FC |
227 | } |
228 | ||
2352aed9 FC |
229 | /** |
230 | * Indicates if the path points to an existing file/directory | |
0bfb7d06 | 231 | * |
2352aed9 FC |
232 | * @param path the path to test |
233 | * @return true if the file/directory exists | |
3791b5df | 234 | */ |
2352aed9 | 235 | protected boolean fileExists(final String path) { |
085d898f | 236 | final File file = new File(path); |
3791b5df FC |
237 | return file.exists(); |
238 | } | |
239 | ||
c7e1020d | 240 | /** |
51e75066 | 241 | * @since 2.0 |
c7e1020d | 242 | */ |
51e75066 AM |
243 | @Override |
244 | public void indexTrace(boolean waitForCompletion) { | |
9e0640dc | 245 | getIndexer().buildIndex(0, TmfTimeRange.ETERNITY, waitForCompletion); |
c7e1020d FC |
246 | } |
247 | ||
200789b3 | 248 | /** |
6f4e8ec0 | 249 | * The default implementation of TmfTrace uses a TmfStatistics back-end. |
200789b3 AM |
250 | * Override this if you want to specify another type (or none at all). |
251 | * | |
6f4e8ec0 AM |
252 | * @throws TmfTraceException |
253 | * If there was a problem setting up the statistics | |
200789b3 AM |
254 | * @since 2.0 |
255 | */ | |
256 | protected void buildStatistics() throws TmfTraceException { | |
257 | /* | |
258 | * Initialize the statistics provider, but only if a Resource has been | |
259 | * set (so we don't build it for experiments, for unit tests, etc.) | |
260 | */ | |
1c0de632 | 261 | fStatistics = (fResource == null ? null : new TmfStateStatistics(this) ); |
200789b3 AM |
262 | } |
263 | ||
faa38350 PT |
264 | /** |
265 | * Build the state system(s) associated with this trace type. | |
266 | * | |
267 | * Suppressing the warning, because the 'throws' will usually happen in | |
268 | * sub-classes. | |
269 | * | |
42459d24 AM |
270 | * @return An IStatus indicating if the state system could be build |
271 | * successfully or not. | |
272 | * @since 3.0 | |
faa38350 | 273 | */ |
42459d24 | 274 | protected IStatus buildStateSystem() { |
faa38350 PT |
275 | /* |
276 | * Nothing is done in the base implementation, please specify | |
a51b2b9f | 277 | * how/if to register a new state system in derived classes. |
faa38350 | 278 | */ |
42459d24 | 279 | return Status.OK_STATUS; |
faa38350 PT |
280 | } |
281 | ||
b5ee6881 FC |
282 | /** |
283 | * Clears the trace | |
284 | */ | |
285 | @Override | |
286 | public synchronized void dispose() { | |
1a4205d9 | 287 | /* Clean up the index if applicable */ |
77551cc2 FC |
288 | if (getIndexer() != null) { |
289 | getIndexer().dispose(); | |
290 | } | |
1a4205d9 AM |
291 | |
292 | /* Clean up the statistics */ | |
293 | if (fStatistics != null) { | |
294 | fStatistics.dispose(); | |
295 | } | |
a51b2b9f AM |
296 | |
297 | /* Clean up the state systems */ | |
298 | for (ITmfStateSystem ss : fStateSystems.values()) { | |
299 | ss.dispose(); | |
300 | } | |
301 | ||
b5ee6881 FC |
302 | super.dispose(); |
303 | } | |
304 | ||
3791b5df | 305 | // ------------------------------------------------------------------------ |
09e86496 | 306 | // ITmfTrace - Basic getters |
e31e01e8 | 307 | // ------------------------------------------------------------------------ |
8c8bf09f | 308 | |
25e48683 | 309 | @Override |
6256d8ad AM |
310 | public Class<ITmfEvent> getEventType() { |
311 | return (Class<ITmfEvent>) super.getType(); | |
25e48683 FC |
312 | } |
313 | ||
d4011df2 | 314 | @Override |
09e86496 FC |
315 | public IResource getResource() { |
316 | return fResource; | |
8c8bf09f ASL |
317 | } |
318 | ||
d4011df2 | 319 | @Override |
09e86496 FC |
320 | public String getPath() { |
321 | return fPath; | |
8c8bf09f ASL |
322 | } |
323 | ||
20658947 FC |
324 | @Override |
325 | public int getCacheSize() { | |
326 | return fCacheSize; | |
327 | } | |
328 | ||
20658947 FC |
329 | @Override |
330 | public long getStreamingInterval() { | |
331 | return fStreamingInterval; | |
332 | } | |
333 | ||
0316808c FC |
334 | /** |
335 | * @return the trace indexer | |
336 | */ | |
6256d8ad | 337 | protected ITmfTraceIndexer getIndexer() { |
0316808c FC |
338 | return fIndexer; |
339 | } | |
340 | ||
341 | /** | |
342 | * @return the trace parser | |
343 | */ | |
6256d8ad | 344 | protected ITmfEventParser getParser() { |
0316808c FC |
345 | return fParser; |
346 | } | |
347 | ||
200789b3 AM |
348 | /** |
349 | * @since 2.0 | |
350 | */ | |
351 | @Override | |
352 | public ITmfStatistics getStatistics() { | |
353 | return fStatistics; | |
354 | } | |
355 | ||
7898bb21 AM |
356 | /** |
357 | * @since 2.0 | |
358 | */ | |
359 | @Override | |
35c160d9 AM |
360 | public final Map<String, ITmfStateSystem> getStateSystems() { |
361 | return Collections.unmodifiableMap(fStateSystems); | |
7898bb21 AM |
362 | } |
363 | ||
6c5e0863 AM |
364 | /** |
365 | * @since 2.0 | |
366 | */ | |
367 | @Override | |
368 | public final void registerStateSystem(String id, ITmfStateSystem ss) { | |
369 | fStateSystems.put(id, ss); | |
370 | } | |
371 | ||
09e86496 FC |
372 | // ------------------------------------------------------------------------ |
373 | // ITmfTrace - Trace characteristics getters | |
374 | // ------------------------------------------------------------------------ | |
375 | ||
d4011df2 | 376 | @Override |
5419a136 | 377 | public synchronized long getNbEvents() { |
3791b5df | 378 | return fNbEvents; |
b0a282fb FC |
379 | } |
380 | ||
3bd46eef AM |
381 | /** |
382 | * @since 2.0 | |
62d1696a | 383 | */ |
d4011df2 | 384 | @Override |
12c155f5 | 385 | public TmfTimeRange getTimeRange() { |
cb866e08 | 386 | return new TmfTimeRange(fStartTime, fEndTime); |
8c8bf09f ASL |
387 | } |
388 | ||
3bd46eef AM |
389 | /** |
390 | * @since 2.0 | |
e31e01e8 | 391 | */ |
d4011df2 | 392 | @Override |
4df4581d | 393 | public ITmfTimestamp getStartTime() { |
4593bd5b | 394 | return fStartTime; |
146a887c FC |
395 | } |
396 | ||
3bd46eef AM |
397 | /** |
398 | * @since 2.0 | |
e31e01e8 | 399 | */ |
d4011df2 | 400 | @Override |
4df4581d | 401 | public ITmfTimestamp getEndTime() { |
4593bd5b | 402 | return fEndTime; |
20658947 FC |
403 | } |
404 | ||
d7ee91bb | 405 | /** |
d7ee91bb PT |
406 | * @since 2.0 |
407 | */ | |
66262ad8 BH |
408 | @Override |
409 | public ITmfTimestamp getInitialRangeOffset() { | |
d7ee91bb PT |
410 | final long DEFAULT_INITIAL_OFFSET_VALUE = (1L * 100 * 1000 * 1000); // .1sec |
411 | return new TmfTimestamp(DEFAULT_INITIAL_OFFSET_VALUE, ITmfTimestamp.NANOSECOND_SCALE); | |
412 | } | |
413 | ||
bb52f9bc GB |
414 | /** |
415 | * @since 3.0 | |
416 | */ | |
417 | @Override | |
418 | public String getHostId() { | |
419 | return this.getName(); | |
420 | } | |
421 | ||
20658947 | 422 | // ------------------------------------------------------------------------ |
d7ee91bb | 423 | // Convenience setters |
20658947 FC |
424 | // ------------------------------------------------------------------------ |
425 | ||
0316808c FC |
426 | /** |
427 | * Set the trace cache size. Must be done at initialization time. | |
0bfb7d06 | 428 | * |
0316808c FC |
429 | * @param cacheSize The trace cache size |
430 | */ | |
431 | protected void setCacheSize(final int cacheSize) { | |
432 | fCacheSize = cacheSize; | |
433 | } | |
434 | ||
435 | /** | |
436 | * Set the trace known number of events. This can be quite dynamic | |
437 | * during indexing or for live traces. | |
0bfb7d06 | 438 | * |
0316808c FC |
439 | * @param nbEvents The number of events |
440 | */ | |
441 | protected synchronized void setNbEvents(final long nbEvents) { | |
442 | fNbEvents = (nbEvents > 0) ? nbEvents : 0; | |
443 | } | |
444 | ||
20658947 FC |
445 | /** |
446 | * Update the trace events time range | |
0bfb7d06 | 447 | * |
20658947 | 448 | * @param range the new time range |
3bd46eef | 449 | * @since 2.0 |
20658947 FC |
450 | */ |
451 | protected void setTimeRange(final TmfTimeRange range) { | |
4593bd5b AM |
452 | fStartTime = range.getStartTime(); |
453 | fEndTime = range.getEndTime(); | |
20658947 FC |
454 | } |
455 | ||
456 | /** | |
457 | * Update the trace chronologically first event timestamp | |
0bfb7d06 | 458 | * |
20658947 | 459 | * @param startTime the new first event timestamp |
3bd46eef | 460 | * @since 2.0 |
20658947 FC |
461 | */ |
462 | protected void setStartTime(final ITmfTimestamp startTime) { | |
4593bd5b | 463 | fStartTime = startTime; |
20658947 FC |
464 | } |
465 | ||
466 | /** | |
467 | * Update the trace chronologically last event timestamp | |
0bfb7d06 | 468 | * |
20658947 | 469 | * @param endTime the new last event timestamp |
3bd46eef | 470 | * @since 2.0 |
20658947 FC |
471 | */ |
472 | protected void setEndTime(final ITmfTimestamp endTime) { | |
4593bd5b | 473 | fEndTime = endTime; |
20658947 FC |
474 | } |
475 | ||
476 | /** | |
0316808c | 477 | * Set the polling interval for live traces (default = 0 = no streaming). |
0bfb7d06 | 478 | * |
20658947 FC |
479 | * @param interval the new trace streaming interval |
480 | */ | |
481 | protected void setStreamingInterval(final long interval) { | |
1703b536 | 482 | fStreamingInterval = (interval > 0) ? interval : 0; |
146a887c FC |
483 | } |
484 | ||
0316808c FC |
485 | /** |
486 | * Set the trace indexer. Must be done at initialization time. | |
0bfb7d06 | 487 | * |
0316808c FC |
488 | * @param indexer the trace indexer |
489 | */ | |
6256d8ad | 490 | protected void setIndexer(final ITmfTraceIndexer indexer) { |
0316808c FC |
491 | fIndexer = indexer; |
492 | } | |
493 | ||
494 | /** | |
495 | * Set the trace parser. Must be done at initialization time. | |
0bfb7d06 | 496 | * |
0316808c FC |
497 | * @param parser the new trace parser |
498 | */ | |
6256d8ad | 499 | protected void setParser(final ITmfEventParser parser) { |
0316808c FC |
500 | fParser = parser; |
501 | } | |
502 | ||
09e86496 | 503 | // ------------------------------------------------------------------------ |
7e6347b0 | 504 | // ITmfTrace - SeekEvent operations (returning a trace context) |
09e86496 FC |
505 | // ------------------------------------------------------------------------ |
506 | ||
1b70b6dc | 507 | @Override |
7e6347b0 | 508 | public synchronized ITmfContext seekEvent(final long rank) { |
09e86496 | 509 | |
7e6347b0 | 510 | // A rank <= 0 indicates to seek the first event |
2352aed9 | 511 | if (rank <= 0) { |
1e1bef82 | 512 | ITmfContext context = seekEvent((ITmfLocation) null); |
2352aed9 FC |
513 | context.setRank(0); |
514 | return context; | |
515 | } | |
09e86496 | 516 | |
09e86496 | 517 | // Position the trace at the checkpoint |
7e6347b0 | 518 | final ITmfContext context = fIndexer.seekIndex(rank); |
09e86496 FC |
519 | |
520 | // And locate the requested event context | |
7e6347b0 FC |
521 | long pos = context.getRank(); |
522 | if (pos < rank) { | |
c32744d6 | 523 | ITmfEvent event = getNext(context); |
0bfb7d06 | 524 | while ((event != null) && (++pos < rank)) { |
c32744d6 | 525 | event = getNext(context); |
7e6347b0 | 526 | } |
09e86496 FC |
527 | } |
528 | return context; | |
1b70b6dc PT |
529 | } |
530 | ||
3bd46eef AM |
531 | /** |
532 | * @since 2.0 | |
09e86496 FC |
533 | */ |
534 | @Override | |
7e6347b0 | 535 | public synchronized ITmfContext seekEvent(final ITmfTimestamp timestamp) { |
09e86496 | 536 | |
7e6347b0 | 537 | // A null timestamp indicates to seek the first event |
2352aed9 | 538 | if (timestamp == null) { |
1e1bef82 | 539 | ITmfContext context = seekEvent((ITmfLocation) null); |
2352aed9 FC |
540 | context.setRank(0); |
541 | return context; | |
542 | } | |
09e86496 | 543 | |
1703b536 | 544 | // Position the trace at the checkpoint |
408e65d2 | 545 | ITmfContext context = fIndexer.seekIndex(timestamp); |
09e86496 FC |
546 | |
547 | // And locate the requested event context | |
ea271da6 PT |
548 | ITmfLocation previousLocation = context.getLocation(); |
549 | long previousRank = context.getRank(); | |
550 | ITmfEvent event = getNext(context); | |
7e6347b0 | 551 | while (event != null && event.getTimestamp().compareTo(timestamp, false) < 0) { |
ea271da6 PT |
552 | previousLocation = context.getLocation(); |
553 | previousRank = context.getRank(); | |
554 | event = getNext(context); | |
09e86496 | 555 | } |
0316808c FC |
556 | if (event == null) { |
557 | context.setLocation(null); | |
558 | context.setRank(ITmfContext.UNKNOWN_RANK); | |
ea271da6 PT |
559 | } else { |
560 | context.dispose(); | |
561 | context = seekEvent(previousLocation); | |
562 | context.setRank(previousRank); | |
0316808c | 563 | } |
09e86496 FC |
564 | return context; |
565 | } | |
0283f7ff | 566 | |
09e86496 FC |
567 | // ------------------------------------------------------------------------ |
568 | // ITmfTrace - Read operations (returning an actual event) | |
569 | // ------------------------------------------------------------------------ | |
570 | ||
d4011df2 | 571 | @Override |
6256d8ad | 572 | public synchronized ITmfEvent getNext(final ITmfContext context) { |
09e86496 | 573 | // parseEvent() does not update the context |
6256d8ad | 574 | final ITmfEvent event = fParser.parseEvent(context); |
09e86496 | 575 | if (event != null) { |
d337369a | 576 | updateAttributes(context, event.getTimestamp()); |
09e86496 FC |
577 | context.setLocation(getCurrentLocation()); |
578 | context.increaseRank(); | |
579 | processEvent(event); | |
580 | } | |
581 | return event; | |
582 | } | |
583 | ||
584 | /** | |
d337369a | 585 | * Hook for special event processing by the concrete class |
7e6347b0 | 586 | * (called by TmfTrace.getEvent()) |
0bfb7d06 | 587 | * |
d337369a | 588 | * @param event the event |
09e86496 FC |
589 | */ |
590 | protected void processEvent(final ITmfEvent event) { | |
d337369a | 591 | // Do nothing |
09e86496 FC |
592 | } |
593 | ||
d337369a FC |
594 | /** |
595 | * Update the trace attributes | |
0bfb7d06 | 596 | * |
d337369a | 597 | * @param context the current trace context |
2848c377 | 598 | * @param timestamp the corresponding timestamp |
3bd46eef | 599 | * @since 2.0 |
d337369a FC |
600 | */ |
601 | protected synchronized void updateAttributes(final ITmfContext context, final ITmfTimestamp timestamp) { | |
0bfb7d06 | 602 | if (fStartTime.equals(TmfTimestamp.BIG_BANG) || (fStartTime.compareTo(timestamp, false) > 0)) { |
4593bd5b | 603 | fStartTime = timestamp; |
09e86496 | 604 | } |
0bfb7d06 | 605 | if (fEndTime.equals(TmfTimestamp.BIG_CRUNCH) || (fEndTime.compareTo(timestamp, false) < 0)) { |
4593bd5b | 606 | fEndTime = timestamp; |
09e86496 FC |
607 | } |
608 | if (context.hasValidRank()) { | |
d337369a | 609 | long rank = context.getRank(); |
09e86496 FC |
610 | if (fNbEvents <= rank) { |
611 | fNbEvents = rank + 1; | |
612 | } | |
200789b3 AM |
613 | if (fIndexer != null) { |
614 | fIndexer.updateIndex(context, timestamp); | |
615 | } | |
09e86496 | 616 | } |
abfad0aa FC |
617 | } |
618 | ||
3791b5df | 619 | // ------------------------------------------------------------------------ |
d337369a | 620 | // TmfDataProvider |
3791b5df FC |
621 | // ------------------------------------------------------------------------ |
622 | ||
77c4a6df AM |
623 | /** |
624 | * @since 2.0 | |
d337369a | 625 | */ |
3791b5df | 626 | @Override |
5419a136 | 627 | public synchronized ITmfContext armRequest(final ITmfDataRequest request) { |
faa38350 PT |
628 | if (executorIsShutdown()) { |
629 | return null; | |
630 | } | |
5419a136 AM |
631 | if ((request instanceof ITmfEventRequest) |
632 | && !TmfTimestamp.BIG_BANG.equals(((ITmfEventRequest) request).getRange().getStartTime()) | |
633 | && (request.getIndex() == 0)) | |
634 | { | |
635 | final ITmfContext context = seekEvent(((ITmfEventRequest) request).getRange().getStartTime()); | |
636 | ((ITmfEventRequest) request).setStartIndex((int) context.getRank()); | |
8584dc20 | 637 | return context; |
8584dc20 | 638 | |
5419a136 AM |
639 | } |
640 | return seekEvent(request.getIndex()); | |
3791b5df FC |
641 | } |
642 | ||
faa38350 PT |
643 | // ------------------------------------------------------------------------ |
644 | // Signal handlers | |
645 | // ------------------------------------------------------------------------ | |
646 | ||
647 | /** | |
648 | * Handler for the Trace Opened signal | |
649 | * | |
650 | * @param signal | |
651 | * The incoming signal | |
652 | * @since 2.0 | |
653 | */ | |
654 | @TmfSignalHandler | |
655 | public void traceOpened(TmfTraceOpenedSignal signal) { | |
b9a5bf8f AM |
656 | boolean signalIsForUs = false; |
657 | for (ITmfTrace trace : TmfTraceManager.getTraceSet(signal.getTrace())) { | |
658 | if (trace == this) { | |
659 | signalIsForUs = true; | |
fe0c44c4 | 660 | break; |
faa38350 PT |
661 | } |
662 | } | |
faa38350 | 663 | |
b9a5bf8f | 664 | if (!signalIsForUs) { |
fe0c44c4 AM |
665 | return; |
666 | } | |
667 | ||
668 | /* | |
b9a5bf8f | 669 | * The signal is either for this trace, or for an experiment containing |
fe0c44c4 AM |
670 | * this trace. |
671 | */ | |
672 | try { | |
673 | buildStatistics(); | |
674 | buildStateSystem(); | |
675 | } catch (TmfTraceException e) { | |
676 | e.printStackTrace(); | |
677 | } | |
678 | ||
679 | /* Refresh the project, so it can pick up new files that got created. */ | |
680 | try { | |
681 | if (fResource != null) { | |
682 | fResource.getProject().refreshLocal(IResource.DEPTH_INFINITE, null); | |
faa38350 | 683 | } |
fe0c44c4 AM |
684 | } catch (CoreException e) { |
685 | e.printStackTrace(); | |
faa38350 | 686 | } |
fe0c44c4 | 687 | |
faa38350 | 688 | if (signal.getTrace() == this) { |
f8fc4a3a | 689 | /* Additionally, the signal is directly for this trace. */ |
faa38350 PT |
690 | if (getNbEvents() == 0) { |
691 | return; | |
692 | } | |
693 | ||
f8fc4a3a PT |
694 | /* For a streaming trace, the range updated signal should be sent |
695 | * by the subclass when a new safe time is determined. | |
696 | */ | |
697 | if (getStreamingInterval() > 0) { | |
698 | return; | |
699 | } | |
700 | ||
faa38350 PT |
701 | final TmfTimeRange timeRange = new TmfTimeRange(getStartTime(), TmfTimestamp.BIG_CRUNCH); |
702 | final TmfTraceRangeUpdatedSignal rangeUpdatedsignal = new TmfTraceRangeUpdatedSignal(this, this, timeRange); | |
703 | ||
704 | // Broadcast in separate thread to prevent deadlock | |
705 | new Thread() { | |
706 | @Override | |
707 | public void run() { | |
708 | broadcast(rangeUpdatedsignal); | |
709 | } | |
710 | }.start(); | |
711 | return; | |
712 | } | |
713 | } | |
714 | ||
715 | /** | |
716 | * Signal handler for the TmfTraceRangeUpdatedSignal signal | |
717 | * | |
718 | * @param signal The incoming signal | |
719 | * @since 2.0 | |
720 | */ | |
721 | @TmfSignalHandler | |
722 | public void traceRangeUpdated(final TmfTraceRangeUpdatedSignal signal) { | |
723 | if (signal.getTrace() == this) { | |
724 | getIndexer().buildIndex(getNbEvents(), signal.getRange(), false); | |
725 | } | |
726 | } | |
727 | ||
3791b5df | 728 | // ------------------------------------------------------------------------ |
09e86496 | 729 | // toString |
3791b5df FC |
730 | // ------------------------------------------------------------------------ |
731 | ||
12c155f5 | 732 | @Override |
09e86496 | 733 | @SuppressWarnings("nls") |
5419a136 | 734 | public synchronized String toString() { |
20658947 FC |
735 | return "TmfTrace [fPath=" + fPath + ", fCacheSize=" + fCacheSize |
736 | + ", fNbEvents=" + fNbEvents + ", fStartTime=" + fStartTime | |
737 | + ", fEndTime=" + fEndTime + ", fStreamingInterval=" + fStreamingInterval + "]"; | |
12c155f5 FC |
738 | } |
739 | ||
8c8bf09f | 740 | } |