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8c8bf09f | 1 | /******************************************************************************* |
09e86496 | 2 | * Copyright (c) 2009, 2010, 2012 Ericsson |
8c8bf09f ASL |
3 | * |
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 | |
8 | * | |
9 | * Contributors: | |
20658947 FC |
10 | * Francois Chouinard - Initial API and implementation |
11 | * Francois Chouinard - Updated as per TMF Trace Model 1.0 | |
8c8bf09f ASL |
12 | *******************************************************************************/ |
13 | ||
6c13869b | 14 | package org.eclipse.linuxtools.tmf.core.trace; |
8c8bf09f | 15 | |
6f4a1d2b | 16 | import java.io.File; |
62d1696a | 17 | import java.io.FileNotFoundException; |
8c8bf09f | 18 | |
828e5592 | 19 | import org.eclipse.core.resources.IResource; |
c7e2f194 | 20 | import org.eclipse.core.runtime.Path; |
6c13869b | 21 | import org.eclipse.linuxtools.tmf.core.component.TmfEventProvider; |
72f1e62a | 22 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; |
4df4581d | 23 | import org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp; |
6c13869b FC |
24 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; |
25 | import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp; | |
b4f71e4a | 26 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
6c13869b FC |
27 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest; |
28 | import org.eclipse.linuxtools.tmf.core.request.ITmfEventRequest; | |
8c8bf09f ASL |
29 | |
30 | /** | |
09e86496 FC |
31 | * Abstract implementation of ITmfTrace. |
32 | * <p> | |
13cb5f43 FC |
33 | * Since the concept of 'location' is trace specific, the concrete classes have |
34 | * to provide the related methods, namely: | |
35 | * <ul> | |
36 | * <li> public ITmfLocation<?> getCurrentLocation() | |
37 | * <li> public double getLocationRatio(ITmfLocation<?> location) | |
38 | * <li> public ITmfContext seekEvent(ITmfLocation<?> location) | |
39 | * <li> public ITmfContext seekEvent(double ratio) | |
2848c377 | 40 | * <li> public boolean validate(IProject project, String path) |
13cb5f43 FC |
41 | * </ul> |
42 | * A concrete trace must provide its corresponding parser. A common way to | |
43 | * accomplish this is by making the concrete class extend TmfTrace and | |
44 | * implement ITmfEventParser. | |
45 | * <p> | |
46 | * The concrete class can either specify its own indexer or use the provided | |
47 | * TmfCheckpointIndexer (default). In this case, the trace cache size will be | |
48 | * used as checkpoint interval. | |
f7703ed6 FC |
49 | * |
50 | * @since 1.0 | |
51 | * @version 1.0 | |
52 | * @author Francois Chouinard | |
53 | * | |
f7703ed6 FC |
54 | * @see ITmfEvent |
55 | * @see ITmfTraceIndexer | |
56 | * @see ITmfEventParser | |
8c8bf09f | 57 | */ |
3791b5df | 58 | public abstract class TmfTrace<T extends ITmfEvent> extends TmfEventProvider<T> implements ITmfTrace<T> { |
62d1696a | 59 | |
e31e01e8 | 60 | // ------------------------------------------------------------------------ |
62d1696a | 61 | // Constants |
e31e01e8 | 62 | // ------------------------------------------------------------------------ |
62d1696a | 63 | |
3791b5df | 64 | /** |
20658947 | 65 | * The default trace cache size |
3791b5df | 66 | */ |
b4f71e4a | 67 | public static final int DEFAULT_TRACE_CACHE_SIZE = 10000; |
8c8bf09f | 68 | |
e31e01e8 | 69 | // ------------------------------------------------------------------------ |
8c8bf09f | 70 | // Attributes |
e31e01e8 | 71 | // ------------------------------------------------------------------------ |
8c8bf09f | 72 | |
09e86496 FC |
73 | // The resource used for persistent properties for this trace |
74 | private IResource fResource; | |
75 | ||
b0a282fb | 76 | // The trace path |
12c155f5 | 77 | private String fPath; |
b0a282fb | 78 | |
3791b5df | 79 | /** |
2848c377 | 80 | * The trace cache page size |
3791b5df | 81 | */ |
20658947 | 82 | protected int fCacheSize = DEFAULT_TRACE_CACHE_SIZE; |
62d1696a | 83 | |
7e6347b0 | 84 | /** |
2848c377 | 85 | * The number of events collected (so far) |
7e6347b0 | 86 | */ |
a3fe52fc | 87 | protected long fNbEvents = 0; |
62d1696a FC |
88 | |
89 | // The time span of the event stream | |
a4115405 FC |
90 | private ITmfTimestamp fStartTime = TmfTimestamp.BIG_CRUNCH; |
91 | private ITmfTimestamp fEndTime = TmfTimestamp.BIG_BANG; | |
62d1696a | 92 | |
3791b5df | 93 | /** |
085d898f | 94 | * The trace streaming interval (0 = no streaming) |
3791b5df FC |
95 | */ |
96 | protected long fStreamingInterval = 0; | |
085d898f | 97 | |
20658947 FC |
98 | /** |
99 | * The trace indexer | |
100 | */ | |
101 | protected ITmfTraceIndexer<ITmfTrace<ITmfEvent>> fIndexer; | |
102 | ||
7e6347b0 FC |
103 | /** |
104 | * The trace parser | |
105 | */ | |
2352aed9 | 106 | protected ITmfEventParser<T> fParser; |
7e6347b0 | 107 | |
e31e01e8 | 108 | // ------------------------------------------------------------------------ |
3791b5df | 109 | // Construction |
e31e01e8 | 110 | // ------------------------------------------------------------------------ |
8c8bf09f | 111 | |
62d1696a | 112 | /** |
3791b5df | 113 | * The default, parameterless, constructor |
62d1696a | 114 | */ |
20658947 | 115 | @SuppressWarnings({ "unchecked", "rawtypes" }) |
3791b5df FC |
116 | public TmfTrace() { |
117 | super(); | |
7e6347b0 | 118 | fIndexer = new TmfCheckpointIndexer(this); |
05bd3318 FC |
119 | } |
120 | ||
121 | /** | |
13cb5f43 FC |
122 | * The standard constructor (non-live trace). Applicable when the trace |
123 | * implements its own parser and if at checkpoint-based index is OK. | |
3791b5df | 124 | * |
20658947 FC |
125 | * @param resource the resource associated to the trace |
126 | * @param type the trace event type | |
127 | * @param path the trace path | |
128 | * @param cacheSize the trace cache size | |
2352aed9 | 129 | * @throws TmfTraceException |
20658947 | 130 | */ |
b4f71e4a | 131 | protected TmfTrace(final IResource resource, final Class<T> type, final String path, final int cacheSize) throws TmfTraceException { |
20658947 FC |
132 | this(resource, type, path, cacheSize, 0, null); |
133 | } | |
134 | ||
135 | /** | |
13cb5f43 FC |
136 | * The standard constructor (live trace). Applicable when the trace |
137 | * implements its own parser and if at checkpoint-based index is OK. | |
20658947 FC |
138 | * |
139 | * @param resource the resource associated to the trace | |
3791b5df FC |
140 | * @param type the trace event type |
141 | * @param path the trace path | |
20658947 FC |
142 | * @param cacheSize the trace cache size |
143 | * @param interval the trace streaming interval | |
2352aed9 | 144 | * @throws TmfTraceException |
05bd3318 | 145 | */ |
b4f71e4a | 146 | protected TmfTrace(final IResource resource, final Class<T> type, final String path, final int cacheSize, final long interval) throws TmfTraceException { |
20658947 | 147 | this(resource, type, path, cacheSize, interval, null); |
05bd3318 FC |
148 | } |
149 | ||
150 | /** | |
13cb5f43 FC |
151 | * The 'non-default indexer' constructor. Allows to provide a trace |
152 | * specific indexer. | |
3791b5df | 153 | * |
20658947 | 154 | * @param resource the resource associated to the trace |
3791b5df FC |
155 | * @param type the trace event type |
156 | * @param path the trace path | |
20658947 FC |
157 | * @param cacheSize the trace cache size |
158 | * @param indexer the trace indexer | |
2352aed9 | 159 | * @throws TmfTraceException |
05bd3318 | 160 | */ |
20658947 | 161 | protected TmfTrace(final IResource resource, final Class<T> type, final String path, final int cacheSize, |
b4f71e4a | 162 | final long interval, final ITmfTraceIndexer<?> indexer) throws TmfTraceException { |
13cb5f43 FC |
163 | this(resource, type, path, cacheSize, interval, null, null); |
164 | } | |
165 | ||
166 | /** | |
167 | * The full constructor where trace specific indexer/parser are provided. | |
168 | * | |
169 | * @param resource the resource associated to the trace | |
170 | * @param type the trace event type | |
171 | * @param path the trace path | |
172 | * @param cacheSize the trace cache size | |
173 | * @param indexer the trace indexer | |
174 | * @param parser the trace event parser | |
2352aed9 | 175 | * @throws TmfTraceException |
13cb5f43 FC |
176 | */ |
177 | @SuppressWarnings({ "unchecked", "rawtypes" }) | |
178 | protected TmfTrace(final IResource resource, final Class<T> type, final String path, final int cacheSize, | |
2352aed9 | 179 | final long interval, final ITmfTraceIndexer<?> indexer, final ITmfEventParser<T> parser) throws TmfTraceException { |
00641a97 | 180 | super(); |
20658947 | 181 | fCacheSize = (cacheSize > 0) ? cacheSize : DEFAULT_TRACE_CACHE_SIZE; |
3791b5df | 182 | fStreamingInterval = interval; |
7e6347b0 | 183 | fIndexer = (indexer != null) ? indexer : new TmfCheckpointIndexer(this, fCacheSize); |
13cb5f43 | 184 | fParser = parser; |
09e86496 | 185 | initialize(resource, path, type); |
8c8bf09f ASL |
186 | } |
187 | ||
3791b5df FC |
188 | /** |
189 | * Copy constructor | |
190 | * | |
191 | * @param trace the original trace | |
192 | */ | |
20658947 | 193 | @SuppressWarnings({ "unchecked", "rawtypes" }) |
b4f71e4a | 194 | public TmfTrace(final TmfTrace<T> trace) throws TmfTraceException { |
3791b5df FC |
195 | super(); |
196 | if (trace == null) | |
197 | throw new IllegalArgumentException(); | |
20658947 FC |
198 | fCacheSize = trace.getCacheSize(); |
199 | fStreamingInterval = trace.getStreamingInterval(); | |
7e6347b0 | 200 | fIndexer = new TmfCheckpointIndexer(this); |
13cb5f43 FC |
201 | fParser = trace.fParser; |
202 | initialize(trace.getResource(), trace.getPath(), trace.getEventType()); | |
3791b5df FC |
203 | } |
204 | ||
7e6347b0 FC |
205 | // ------------------------------------------------------------------------ |
206 | // ITmfTrace - Initializers | |
207 | // ------------------------------------------------------------------------ | |
208 | ||
209 | /* (non-Javadoc) | |
210 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#initTrace(org.eclipse.core.resources.IResource, java.lang.String, java.lang.Class) | |
211 | */ | |
212 | @Override | |
b4f71e4a | 213 | public void initTrace(final IResource resource, final String path, final Class<T> type) throws TmfTraceException { |
7e6347b0 FC |
214 | initialize(resource, path, type); |
215 | fIndexer.buildIndex(false); | |
216 | } | |
217 | ||
09e86496 | 218 | /** |
1703b536 FC |
219 | * Initialize the trace common attributes and the base component. |
220 | * | |
221 | * @param resource the Eclipse resource (trace) | |
222 | * @param path the trace path | |
223 | * @param type the trace event type | |
224 | * | |
09e86496 | 225 | * @throws FileNotFoundException |
3791b5df | 226 | */ |
2352aed9 | 227 | @SuppressWarnings("unchecked") |
b4f71e4a | 228 | protected void initialize(final IResource resource, final String path, final Class<T> type) throws TmfTraceException { |
1703b536 | 229 | if (path == null) |
b4f71e4a | 230 | throw new TmfTraceException("Invalid trace path"); //$NON-NLS-1$ |
3791b5df | 231 | fPath = path; |
1703b536 | 232 | fResource = resource; |
25e48683 | 233 | String traceName = (resource != null) ? resource.getName() : null; |
1703b536 FC |
234 | // If no resource was provided, extract the display name the trace path |
235 | if (traceName == null) { | |
236 | final int sep = path.lastIndexOf(Path.SEPARATOR); | |
237 | traceName = (sep >= 0) ? path.substring(sep + 1) : path; | |
238 | } | |
2352aed9 FC |
239 | if (fParser == null) { |
240 | if (this instanceof ITmfEventParser) { | |
241 | fParser = (ITmfEventParser<T>) this; | |
242 | } else { | |
243 | throw new TmfTraceException("Invalid trace parser"); //$NON-NLS-1$ | |
244 | } | |
245 | } | |
3791b5df FC |
246 | super.init(traceName, type); |
247 | } | |
248 | ||
2352aed9 FC |
249 | /** |
250 | * Indicates if the path points to an existing file/directory | |
20658947 | 251 | * |
2352aed9 FC |
252 | * @param path the path to test |
253 | * @return true if the file/directory exists | |
3791b5df | 254 | */ |
2352aed9 | 255 | protected boolean fileExists(final String path) { |
085d898f | 256 | final File file = new File(path); |
3791b5df FC |
257 | return file.exists(); |
258 | } | |
259 | ||
3791b5df | 260 | // ------------------------------------------------------------------------ |
09e86496 | 261 | // ITmfTrace - Basic getters |
e31e01e8 | 262 | // ------------------------------------------------------------------------ |
8c8bf09f | 263 | |
09e86496 | 264 | /* (non-Javadoc) |
13cb5f43 | 265 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getEventType() |
25e48683 FC |
266 | */ |
267 | @Override | |
09e86496 | 268 | @SuppressWarnings("unchecked") |
13cb5f43 | 269 | public Class<T> getEventType() { |
09e86496 | 270 | return (Class<T>) super.getType(); |
25e48683 FC |
271 | } |
272 | ||
09e86496 FC |
273 | /* (non-Javadoc) |
274 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getResource() | |
62d1696a | 275 | */ |
d4011df2 | 276 | @Override |
09e86496 FC |
277 | public IResource getResource() { |
278 | return fResource; | |
8c8bf09f ASL |
279 | } |
280 | ||
09e86496 FC |
281 | /* (non-Javadoc) |
282 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getPath() | |
62d1696a | 283 | */ |
d4011df2 | 284 | @Override |
09e86496 FC |
285 | public String getPath() { |
286 | return fPath; | |
8c8bf09f ASL |
287 | } |
288 | ||
20658947 FC |
289 | /* (non-Javadoc) |
290 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getIndexPageSize() | |
291 | */ | |
292 | @Override | |
293 | public int getCacheSize() { | |
294 | return fCacheSize; | |
295 | } | |
296 | ||
297 | /* (non-Javadoc) | |
298 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getStreamingInterval() | |
299 | */ | |
300 | @Override | |
301 | public long getStreamingInterval() { | |
302 | return fStreamingInterval; | |
303 | } | |
304 | ||
09e86496 FC |
305 | // ------------------------------------------------------------------------ |
306 | // ITmfTrace - Trace characteristics getters | |
307 | // ------------------------------------------------------------------------ | |
308 | ||
309 | /* (non-Javadoc) | |
310 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getNbEvents() | |
b0a282fb | 311 | */ |
d4011df2 | 312 | @Override |
afc86f78 | 313 | public synchronized long getNbEvents() { |
3791b5df | 314 | return fNbEvents; |
b0a282fb FC |
315 | } |
316 | ||
09e86496 FC |
317 | /* (non-Javadoc) |
318 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getTimeRange() | |
62d1696a | 319 | */ |
d4011df2 | 320 | @Override |
12c155f5 | 321 | public TmfTimeRange getTimeRange() { |
cb866e08 | 322 | return new TmfTimeRange(fStartTime, fEndTime); |
8c8bf09f ASL |
323 | } |
324 | ||
09e86496 FC |
325 | /* (non-Javadoc) |
326 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getStartTime() | |
e31e01e8 | 327 | */ |
d4011df2 | 328 | @Override |
4df4581d | 329 | public ITmfTimestamp getStartTime() { |
20658947 | 330 | return fStartTime.clone(); |
146a887c FC |
331 | } |
332 | ||
09e86496 FC |
333 | /* (non-Javadoc) |
334 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getEndTime() | |
e31e01e8 | 335 | */ |
d4011df2 | 336 | @Override |
4df4581d | 337 | public ITmfTimestamp getEndTime() { |
20658947 FC |
338 | return fEndTime.clone(); |
339 | } | |
340 | ||
341 | // ------------------------------------------------------------------------ | |
342 | // Convenience setters | |
343 | // ------------------------------------------------------------------------ | |
344 | ||
345 | /** | |
346 | * Update the trace events time range | |
347 | * | |
348 | * @param range the new time range | |
349 | */ | |
350 | protected void setTimeRange(final TmfTimeRange range) { | |
351 | fStartTime = range.getStartTime().clone(); | |
352 | fEndTime = range.getEndTime().clone(); | |
353 | } | |
354 | ||
355 | /** | |
356 | * Update the trace chronologically first event timestamp | |
357 | * | |
358 | * @param startTime the new first event timestamp | |
359 | */ | |
360 | protected void setStartTime(final ITmfTimestamp startTime) { | |
361 | fStartTime = startTime.clone(); | |
362 | } | |
363 | ||
364 | /** | |
365 | * Update the trace chronologically last event timestamp | |
366 | * | |
367 | * @param endTime the new last event timestamp | |
368 | */ | |
369 | protected void setEndTime(final ITmfTimestamp endTime) { | |
370 | fEndTime = endTime.clone(); | |
371 | } | |
372 | ||
373 | /** | |
374 | * Update the trace streaming interval | |
375 | * | |
376 | * @param interval the new trace streaming interval | |
377 | */ | |
378 | protected void setStreamingInterval(final long interval) { | |
1703b536 | 379 | fStreamingInterval = (interval > 0) ? interval : 0; |
146a887c FC |
380 | } |
381 | ||
09e86496 | 382 | // ------------------------------------------------------------------------ |
7e6347b0 | 383 | // ITmfTrace - SeekEvent operations (returning a trace context) |
09e86496 FC |
384 | // ------------------------------------------------------------------------ |
385 | ||
386 | /* (non-Javadoc) | |
7e6347b0 | 387 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#seekEvent(long) |
1b70b6dc PT |
388 | */ |
389 | @Override | |
7e6347b0 | 390 | public synchronized ITmfContext seekEvent(final long rank) { |
09e86496 | 391 | |
7e6347b0 | 392 | // A rank <= 0 indicates to seek the first event |
2352aed9 FC |
393 | if (rank <= 0) { |
394 | ITmfContext context = seekEvent((ITmfLocation<?>) null); | |
395 | context.setRank(0); | |
396 | return context; | |
397 | } | |
09e86496 | 398 | |
09e86496 | 399 | // Position the trace at the checkpoint |
7e6347b0 | 400 | final ITmfContext context = fIndexer.seekIndex(rank); |
09e86496 FC |
401 | |
402 | // And locate the requested event context | |
7e6347b0 FC |
403 | long pos = context.getRank(); |
404 | if (pos < rank) { | |
b4f71e4a | 405 | ITmfEvent event = readNextEvent(context); |
7e6347b0 | 406 | while (event != null && ++pos < rank) { |
b4f71e4a | 407 | event = readNextEvent(context); |
7e6347b0 | 408 | } |
09e86496 FC |
409 | } |
410 | return context; | |
1b70b6dc PT |
411 | } |
412 | ||
09e86496 | 413 | /* (non-Javadoc) |
7e6347b0 | 414 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#seekEvent(org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp) |
09e86496 FC |
415 | */ |
416 | @Override | |
7e6347b0 | 417 | public synchronized ITmfContext seekEvent(final ITmfTimestamp timestamp) { |
09e86496 | 418 | |
7e6347b0 | 419 | // A null timestamp indicates to seek the first event |
2352aed9 FC |
420 | if (timestamp == null) { |
421 | ITmfContext context = seekEvent((ITmfLocation<?>) null); | |
422 | context.setRank(0); | |
423 | return context; | |
424 | } | |
09e86496 | 425 | |
1703b536 | 426 | // Position the trace at the checkpoint |
7e6347b0 | 427 | final ITmfContext context = fIndexer.seekIndex(timestamp); |
09e86496 FC |
428 | |
429 | // And locate the requested event context | |
7e6347b0 | 430 | final ITmfContext nextEventContext = context.clone(); // Must use clone() to get the right subtype... |
b4f71e4a | 431 | ITmfEvent event = readNextEvent(nextEventContext); |
7e6347b0 FC |
432 | while (event != null && event.getTimestamp().compareTo(timestamp, false) < 0) { |
433 | context.setLocation(nextEventContext.getLocation().clone()); | |
434 | context.increaseRank(); | |
b4f71e4a | 435 | event = readNextEvent(nextEventContext); |
09e86496 FC |
436 | } |
437 | return context; | |
438 | } | |
439 | ||
09e86496 FC |
440 | // ------------------------------------------------------------------------ |
441 | // ITmfTrace - Read operations (returning an actual event) | |
442 | // ------------------------------------------------------------------------ | |
443 | ||
d337369a | 444 | /* (non-Javadoc) |
b4f71e4a | 445 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#readNextEvent(org.eclipse.linuxtools.tmf.core.trace.ITmfContext) |
abfad0aa | 446 | */ |
d4011df2 | 447 | @Override |
b4f71e4a | 448 | public synchronized ITmfEvent readNextEvent(final ITmfContext context) { |
09e86496 | 449 | // parseEvent() does not update the context |
7e6347b0 | 450 | final ITmfEvent event = fParser.parseEvent(context); |
09e86496 | 451 | if (event != null) { |
d337369a | 452 | updateAttributes(context, event.getTimestamp()); |
09e86496 FC |
453 | context.setLocation(getCurrentLocation()); |
454 | context.increaseRank(); | |
455 | processEvent(event); | |
456 | } | |
457 | return event; | |
458 | } | |
459 | ||
460 | /** | |
d337369a | 461 | * Hook for special event processing by the concrete class |
7e6347b0 | 462 | * (called by TmfTrace.getEvent()) |
09e86496 | 463 | * |
d337369a | 464 | * @param event the event |
09e86496 FC |
465 | */ |
466 | protected void processEvent(final ITmfEvent event) { | |
d337369a | 467 | // Do nothing |
09e86496 FC |
468 | } |
469 | ||
d337369a FC |
470 | /** |
471 | * Update the trace attributes | |
472 | * | |
473 | * @param context the current trace context | |
2848c377 | 474 | * @param timestamp the corresponding timestamp |
d337369a FC |
475 | */ |
476 | protected synchronized void updateAttributes(final ITmfContext context, final ITmfTimestamp timestamp) { | |
09e86496 FC |
477 | if (fStartTime.compareTo(timestamp, false) > 0) { |
478 | fStartTime = timestamp; | |
479 | } | |
480 | if (fEndTime.compareTo(timestamp, false) < 0) { | |
481 | fEndTime = timestamp; | |
482 | } | |
483 | if (context.hasValidRank()) { | |
d337369a | 484 | long rank = context.getRank(); |
09e86496 FC |
485 | if (fNbEvents <= rank) { |
486 | fNbEvents = rank + 1; | |
487 | } | |
d337369a | 488 | fIndexer.updateIndex(context, timestamp); |
09e86496 | 489 | } |
abfad0aa FC |
490 | } |
491 | ||
3791b5df | 492 | // ------------------------------------------------------------------------ |
d337369a | 493 | // TmfDataProvider |
3791b5df FC |
494 | // ------------------------------------------------------------------------ |
495 | ||
d337369a FC |
496 | /* (non-Javadoc) |
497 | * @see org.eclipse.linuxtools.tmf.core.component.TmfDataProvider#armRequest(org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest) | |
498 | */ | |
3791b5df | 499 | @Override |
085d898f | 500 | public ITmfContext armRequest(final ITmfDataRequest<T> request) { |
3791b5df | 501 | if (request instanceof ITmfEventRequest<?> |
25e48683 FC |
502 | && !TmfTimestamp.BIG_BANG.equals(((ITmfEventRequest<T>) request).getRange().getStartTime()) |
503 | && request.getIndex() == 0) { | |
085d898f | 504 | final ITmfContext context = seekEvent(((ITmfEventRequest<T>) request).getRange().getStartTime()); |
3791b5df FC |
505 | ((ITmfEventRequest<T>) request).setStartIndex((int) context.getRank()); |
506 | return context; | |
507 | ||
508 | } | |
509 | return seekEvent(request.getIndex()); | |
510 | } | |
511 | ||
d337369a FC |
512 | /* (non-Javadoc) |
513 | * @see org.eclipse.linuxtools.tmf.core.component.TmfDataProvider#getNext(org.eclipse.linuxtools.tmf.core.trace.ITmfContext) | |
3791b5df | 514 | */ |
3791b5df | 515 | @Override |
20658947 | 516 | @SuppressWarnings("unchecked") |
085d898f FC |
517 | public T getNext(final ITmfContext context) { |
518 | if (context instanceof TmfContext) | |
b4f71e4a | 519 | return (T) readNextEvent(context); |
3791b5df FC |
520 | return null; |
521 | } | |
522 | ||
09e86496 | 523 | |
3791b5df | 524 | // ------------------------------------------------------------------------ |
09e86496 | 525 | // toString |
3791b5df FC |
526 | // ------------------------------------------------------------------------ |
527 | ||
d337369a FC |
528 | /* (non-Javadoc) |
529 | * @see java.lang.Object#toString() | |
530 | */ | |
12c155f5 | 531 | @Override |
09e86496 | 532 | @SuppressWarnings("nls") |
afc86f78 | 533 | public synchronized String toString() { |
20658947 FC |
534 | return "TmfTrace [fPath=" + fPath + ", fCacheSize=" + fCacheSize |
535 | + ", fNbEvents=" + fNbEvents + ", fStartTime=" + fStartTime | |
536 | + ", fEndTime=" + fEndTime + ", fStreamingInterval=" + fStreamingInterval + "]"; | |
12c155f5 FC |
537 | } |
538 | ||
8c8bf09f | 539 | } |