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8c8bf09f | 1 | /******************************************************************************* |
09e86496 | 2 | * Copyright (c) 2009, 2010, 2012 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 | |
8c8bf09f ASL |
12 | *******************************************************************************/ |
13 | ||
6c13869b | 14 | package org.eclipse.linuxtools.tmf.core.trace; |
8c8bf09f | 15 | |
6f4a1d2b | 16 | import java.io.File; |
8c8bf09f | 17 | |
828e5592 | 18 | import org.eclipse.core.resources.IResource; |
9b749023 | 19 | import org.eclipse.core.runtime.IPath; |
6c13869b | 20 | import org.eclipse.linuxtools.tmf.core.component.TmfEventProvider; |
72f1e62a | 21 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; |
4df4581d | 22 | import org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp; |
6c13869b FC |
23 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; |
24 | import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp; | |
b4f71e4a | 25 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
6c13869b FC |
26 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest; |
27 | import org.eclipse.linuxtools.tmf.core.request.ITmfEventRequest; | |
7898bb21 | 28 | import org.eclipse.linuxtools.tmf.core.statesystem.ITmfStateSystem; |
200789b3 | 29 | import org.eclipse.linuxtools.tmf.core.statistics.ITmfStatistics; |
1c0de632 | 30 | import org.eclipse.linuxtools.tmf.core.statistics.TmfStateStatistics; |
8c8bf09f ASL |
31 | |
32 | /** | |
09e86496 FC |
33 | * Abstract implementation of ITmfTrace. |
34 | * <p> | |
13cb5f43 FC |
35 | * Since the concept of 'location' is trace specific, the concrete classes have |
36 | * to provide the related methods, namely: | |
37 | * <ul> | |
38 | * <li> public ITmfLocation<?> getCurrentLocation() | |
39 | * <li> public double getLocationRatio(ITmfLocation<?> location) | |
40 | * <li> public ITmfContext seekEvent(ITmfLocation<?> location) | |
41 | * <li> public ITmfContext seekEvent(double ratio) | |
2848c377 | 42 | * <li> public boolean validate(IProject project, String path) |
13cb5f43 FC |
43 | * </ul> |
44 | * A concrete trace must provide its corresponding parser. A common way to | |
45 | * accomplish this is by making the concrete class extend TmfTrace and | |
46 | * implement ITmfEventParser. | |
47 | * <p> | |
48 | * The concrete class can either specify its own indexer or use the provided | |
49 | * TmfCheckpointIndexer (default). In this case, the trace cache size will be | |
50 | * used as checkpoint interval. | |
0bfb7d06 | 51 | * |
f7703ed6 FC |
52 | * @version 1.0 |
53 | * @author Francois Chouinard | |
54 | * | |
f7703ed6 FC |
55 | * @see ITmfEvent |
56 | * @see ITmfTraceIndexer | |
57 | * @see ITmfEventParser | |
8c8bf09f | 58 | */ |
6256d8ad | 59 | public abstract class TmfTrace extends TmfEventProvider implements ITmfTrace { |
62d1696a | 60 | |
e31e01e8 | 61 | // ------------------------------------------------------------------------ |
8c8bf09f | 62 | // Attributes |
e31e01e8 | 63 | // ------------------------------------------------------------------------ |
8c8bf09f | 64 | |
09e86496 FC |
65 | // The resource used for persistent properties for this trace |
66 | private IResource fResource; | |
67 | ||
b0a282fb | 68 | // The trace path |
12c155f5 | 69 | private String fPath; |
b0a282fb | 70 | |
0316808c FC |
71 | // The trace cache page size |
72 | private int fCacheSize = ITmfTrace.DEFAULT_TRACE_CACHE_SIZE; | |
62d1696a | 73 | |
0316808c FC |
74 | // The number of events collected (so far) |
75 | private long fNbEvents = 0; | |
62d1696a FC |
76 | |
77 | // The time span of the event stream | |
a4115405 FC |
78 | private ITmfTimestamp fStartTime = TmfTimestamp.BIG_CRUNCH; |
79 | private ITmfTimestamp fEndTime = TmfTimestamp.BIG_BANG; | |
62d1696a | 80 | |
0316808c FC |
81 | // The trace streaming interval (0 = no streaming) |
82 | private long fStreamingInterval = 0; | |
085d898f | 83 | |
0316808c | 84 | // The trace indexer |
6256d8ad | 85 | private ITmfTraceIndexer fIndexer; |
20658947 | 86 | |
0316808c | 87 | // The trace parser |
6256d8ad | 88 | private ITmfEventParser fParser; |
7e6347b0 | 89 | |
200789b3 AM |
90 | // The trace's statistics |
91 | private ITmfStatistics fStatistics; | |
92 | ||
e31e01e8 | 93 | // ------------------------------------------------------------------------ |
3791b5df | 94 | // Construction |
e31e01e8 | 95 | // ------------------------------------------------------------------------ |
8c8bf09f | 96 | |
62d1696a | 97 | /** |
3791b5df | 98 | * The default, parameterless, constructor |
62d1696a | 99 | */ |
3791b5df FC |
100 | public TmfTrace() { |
101 | super(); | |
05bd3318 FC |
102 | } |
103 | ||
104 | /** | |
13cb5f43 | 105 | * The standard constructor (non-live trace). Applicable when the trace |
0bfb7d06 MK |
106 | * implements its own parser and if at checkpoint-based index is OK. |
107 | * | |
20658947 FC |
108 | * @param resource the resource associated to the trace |
109 | * @param type the trace event type | |
110 | * @param path the trace path | |
111 | * @param cacheSize the trace cache size | |
2352aed9 | 112 | * @throws TmfTraceException |
20658947 | 113 | */ |
6256d8ad | 114 | protected TmfTrace(final IResource resource, final Class<? extends ITmfEvent> type, final String path, final int cacheSize) throws TmfTraceException { |
9e0640dc | 115 | this(resource, type, path, cacheSize, 0); |
20658947 FC |
116 | } |
117 | ||
118 | /** | |
13cb5f43 FC |
119 | * The standard constructor (live trace). Applicable when the trace |
120 | * implements its own parser and if at checkpoint-based index is OK. | |
0bfb7d06 | 121 | * |
20658947 | 122 | * @param resource the resource associated to the trace |
3791b5df FC |
123 | * @param type the trace event type |
124 | * @param path the trace path | |
20658947 FC |
125 | * @param cacheSize the trace cache size |
126 | * @param interval the trace streaming interval | |
2352aed9 | 127 | * @throws TmfTraceException |
05bd3318 | 128 | */ |
6256d8ad | 129 | protected TmfTrace(final IResource resource, final Class<? extends ITmfEvent> type, final String path, final int cacheSize, final long interval) throws TmfTraceException { |
20658947 | 130 | this(resource, type, path, cacheSize, interval, null); |
05bd3318 FC |
131 | } |
132 | ||
133 | /** | |
13cb5f43 FC |
134 | * The 'non-default indexer' constructor. Allows to provide a trace |
135 | * specific indexer. | |
0bfb7d06 | 136 | * |
20658947 | 137 | * @param resource the resource associated to the trace |
3791b5df FC |
138 | * @param type the trace event type |
139 | * @param path the trace path | |
20658947 FC |
140 | * @param cacheSize the trace cache size |
141 | * @param indexer the trace indexer | |
2352aed9 | 142 | * @throws TmfTraceException |
05bd3318 | 143 | */ |
6256d8ad AM |
144 | protected TmfTrace(final IResource resource, final Class<? extends ITmfEvent> type, final String path, final int cacheSize, |
145 | final long interval, final ITmfTraceIndexer indexer) throws TmfTraceException { | |
0316808c | 146 | this(resource, type, path, cacheSize, interval, indexer, null); |
13cb5f43 FC |
147 | } |
148 | ||
149 | /** | |
0bfb7d06 MK |
150 | * The full constructor where trace specific indexer/parser are provided. |
151 | * | |
13cb5f43 FC |
152 | * @param resource the resource associated to the trace |
153 | * @param type the trace event type | |
154 | * @param path the trace path | |
155 | * @param cacheSize the trace cache size | |
156 | * @param indexer the trace indexer | |
157 | * @param parser the trace event parser | |
2352aed9 | 158 | * @throws TmfTraceException |
13cb5f43 | 159 | */ |
6256d8ad AM |
160 | protected TmfTrace(final IResource resource, final Class<? extends ITmfEvent> type, final String path, final int cacheSize, |
161 | final long interval, final ITmfTraceIndexer indexer, final ITmfEventParser parser) throws TmfTraceException { | |
00641a97 | 162 | super(); |
0316808c | 163 | fCacheSize = (cacheSize > 0) ? cacheSize : ITmfTrace.DEFAULT_TRACE_CACHE_SIZE; |
3791b5df | 164 | fStreamingInterval = interval; |
7e6347b0 | 165 | fIndexer = (indexer != null) ? indexer : new TmfCheckpointIndexer(this, fCacheSize); |
13cb5f43 | 166 | fParser = parser; |
09e86496 | 167 | initialize(resource, path, type); |
8c8bf09f ASL |
168 | } |
169 | ||
3791b5df FC |
170 | /** |
171 | * Copy constructor | |
0bfb7d06 | 172 | * |
3791b5df | 173 | * @param trace the original trace |
063f0d27 | 174 | * @throws TmfTraceException Should not happen usually |
3791b5df | 175 | */ |
6256d8ad | 176 | public TmfTrace(final TmfTrace trace) throws TmfTraceException { |
3791b5df | 177 | super(); |
0316808c | 178 | if (trace == null) { |
3791b5df | 179 | throw new IllegalArgumentException(); |
0316808c | 180 | } |
20658947 FC |
181 | fCacheSize = trace.getCacheSize(); |
182 | fStreamingInterval = trace.getStreamingInterval(); | |
7e6347b0 | 183 | fIndexer = new TmfCheckpointIndexer(this); |
13cb5f43 FC |
184 | fParser = trace.fParser; |
185 | initialize(trace.getResource(), trace.getPath(), trace.getEventType()); | |
3791b5df FC |
186 | } |
187 | ||
7e6347b0 FC |
188 | // ------------------------------------------------------------------------ |
189 | // ITmfTrace - Initializers | |
190 | // ------------------------------------------------------------------------ | |
191 | ||
192 | /* (non-Javadoc) | |
193 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#initTrace(org.eclipse.core.resources.IResource, java.lang.String, java.lang.Class) | |
194 | */ | |
195 | @Override | |
6256d8ad | 196 | public void initTrace(final IResource resource, final String path, final Class<? extends ITmfEvent> type) throws TmfTraceException { |
9dc3dee2 | 197 | fIndexer = new TmfCheckpointIndexer(this, fCacheSize); |
7e6347b0 | 198 | initialize(resource, path, type); |
7e6347b0 FC |
199 | } |
200 | ||
09e86496 | 201 | /** |
1703b536 | 202 | * Initialize the trace common attributes and the base component. |
0bfb7d06 MK |
203 | * |
204 | * @param resource the Eclipse resource (trace) | |
1703b536 FC |
205 | * @param path the trace path |
206 | * @param type the trace event type | |
0bfb7d06 | 207 | * |
0316808c | 208 | * @throws TmfTraceException |
3791b5df | 209 | */ |
6256d8ad | 210 | protected void initialize(final IResource resource, final String path, final Class<? extends ITmfEvent> type) throws TmfTraceException { |
0316808c | 211 | if (path == null) { |
b4f71e4a | 212 | throw new TmfTraceException("Invalid trace path"); //$NON-NLS-1$ |
0316808c | 213 | } |
3791b5df | 214 | fPath = path; |
1703b536 | 215 | fResource = resource; |
25e48683 | 216 | String traceName = (resource != null) ? resource.getName() : null; |
1703b536 FC |
217 | // If no resource was provided, extract the display name the trace path |
218 | if (traceName == null) { | |
9b749023 | 219 | final int sep = path.lastIndexOf(IPath.SEPARATOR); |
1703b536 FC |
220 | traceName = (sep >= 0) ? path.substring(sep + 1) : path; |
221 | } | |
2352aed9 FC |
222 | if (fParser == null) { |
223 | if (this instanceof ITmfEventParser) { | |
6256d8ad | 224 | fParser = (ITmfEventParser) this; |
2352aed9 FC |
225 | } else { |
226 | throw new TmfTraceException("Invalid trace parser"); //$NON-NLS-1$ | |
227 | } | |
228 | } | |
3791b5df | 229 | super.init(traceName, type); |
200789b3 AM |
230 | |
231 | buildStatistics(); | |
3791b5df FC |
232 | } |
233 | ||
2352aed9 FC |
234 | /** |
235 | * Indicates if the path points to an existing file/directory | |
0bfb7d06 | 236 | * |
2352aed9 FC |
237 | * @param path the path to test |
238 | * @return true if the file/directory exists | |
3791b5df | 239 | */ |
2352aed9 | 240 | protected boolean fileExists(final String path) { |
085d898f | 241 | final File file = new File(path); |
3791b5df FC |
242 | return file.exists(); |
243 | } | |
244 | ||
c7e1020d FC |
245 | /** |
246 | * Index the trace | |
0bfb7d06 | 247 | * |
c7e1020d FC |
248 | * @param waitForCompletion index synchronously (true) or not (false) |
249 | */ | |
250 | protected void indexTrace(boolean waitForCompletion) { | |
9e0640dc | 251 | getIndexer().buildIndex(0, TmfTimeRange.ETERNITY, waitForCompletion); |
c7e1020d FC |
252 | } |
253 | ||
200789b3 AM |
254 | /** |
255 | * The default implementation of TmfTrace uses a TmfStatistics backend. | |
256 | * Override this if you want to specify another type (or none at all). | |
257 | * | |
258 | * @since 2.0 | |
259 | */ | |
260 | protected void buildStatistics() throws TmfTraceException { | |
261 | /* | |
262 | * Initialize the statistics provider, but only if a Resource has been | |
263 | * set (so we don't build it for experiments, for unit tests, etc.) | |
264 | */ | |
1c0de632 | 265 | fStatistics = (fResource == null ? null : new TmfStateStatistics(this) ); |
200789b3 AM |
266 | } |
267 | ||
b5ee6881 FC |
268 | /** |
269 | * Clears the trace | |
270 | */ | |
271 | @Override | |
272 | public synchronized void dispose() { | |
77551cc2 FC |
273 | // Clean up the index if applicable |
274 | if (getIndexer() != null) { | |
275 | getIndexer().dispose(); | |
276 | } | |
b5ee6881 FC |
277 | super.dispose(); |
278 | } | |
279 | ||
3791b5df | 280 | // ------------------------------------------------------------------------ |
09e86496 | 281 | // ITmfTrace - Basic getters |
e31e01e8 | 282 | // ------------------------------------------------------------------------ |
8c8bf09f | 283 | |
09e86496 | 284 | /* (non-Javadoc) |
13cb5f43 | 285 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getEventType() |
25e48683 FC |
286 | */ |
287 | @Override | |
6256d8ad AM |
288 | public Class<ITmfEvent> getEventType() { |
289 | return (Class<ITmfEvent>) super.getType(); | |
25e48683 FC |
290 | } |
291 | ||
09e86496 FC |
292 | /* (non-Javadoc) |
293 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getResource() | |
62d1696a | 294 | */ |
d4011df2 | 295 | @Override |
09e86496 FC |
296 | public IResource getResource() { |
297 | return fResource; | |
8c8bf09f ASL |
298 | } |
299 | ||
09e86496 FC |
300 | /* (non-Javadoc) |
301 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getPath() | |
62d1696a | 302 | */ |
d4011df2 | 303 | @Override |
09e86496 FC |
304 | public String getPath() { |
305 | return fPath; | |
8c8bf09f ASL |
306 | } |
307 | ||
20658947 FC |
308 | /* (non-Javadoc) |
309 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getIndexPageSize() | |
310 | */ | |
311 | @Override | |
312 | public int getCacheSize() { | |
313 | return fCacheSize; | |
314 | } | |
315 | ||
316 | /* (non-Javadoc) | |
317 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getStreamingInterval() | |
318 | */ | |
319 | @Override | |
320 | public long getStreamingInterval() { | |
321 | return fStreamingInterval; | |
322 | } | |
323 | ||
0316808c FC |
324 | /** |
325 | * @return the trace indexer | |
326 | */ | |
6256d8ad | 327 | protected ITmfTraceIndexer getIndexer() { |
0316808c FC |
328 | return fIndexer; |
329 | } | |
330 | ||
331 | /** | |
332 | * @return the trace parser | |
333 | */ | |
6256d8ad | 334 | protected ITmfEventParser getParser() { |
0316808c FC |
335 | return fParser; |
336 | } | |
337 | ||
200789b3 AM |
338 | /** |
339 | * @since 2.0 | |
340 | */ | |
341 | @Override | |
342 | public ITmfStatistics getStatistics() { | |
343 | return fStatistics; | |
344 | } | |
345 | ||
7898bb21 AM |
346 | /** |
347 | * @since 2.0 | |
348 | */ | |
349 | @Override | |
350 | public ITmfStateSystem getStateSystem() { | |
351 | /* | |
352 | * By default, no state system is used. Sub-classes can specify their | |
353 | * own behaviour. | |
354 | */ | |
355 | return null; | |
356 | } | |
357 | ||
09e86496 FC |
358 | // ------------------------------------------------------------------------ |
359 | // ITmfTrace - Trace characteristics getters | |
360 | // ------------------------------------------------------------------------ | |
361 | ||
362 | /* (non-Javadoc) | |
363 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getNbEvents() | |
b0a282fb | 364 | */ |
d4011df2 | 365 | @Override |
afc86f78 | 366 | public synchronized long getNbEvents() { |
3791b5df | 367 | return fNbEvents; |
b0a282fb FC |
368 | } |
369 | ||
09e86496 FC |
370 | /* (non-Javadoc) |
371 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getTimeRange() | |
62d1696a | 372 | */ |
d4011df2 | 373 | @Override |
12c155f5 | 374 | public TmfTimeRange getTimeRange() { |
cb866e08 | 375 | return new TmfTimeRange(fStartTime, fEndTime); |
8c8bf09f ASL |
376 | } |
377 | ||
09e86496 FC |
378 | /* (non-Javadoc) |
379 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getStartTime() | |
e31e01e8 | 380 | */ |
d4011df2 | 381 | @Override |
4df4581d | 382 | public ITmfTimestamp getStartTime() { |
4593bd5b | 383 | return fStartTime; |
146a887c FC |
384 | } |
385 | ||
09e86496 FC |
386 | /* (non-Javadoc) |
387 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#getEndTime() | |
e31e01e8 | 388 | */ |
d4011df2 | 389 | @Override |
4df4581d | 390 | public ITmfTimestamp getEndTime() { |
4593bd5b | 391 | return fEndTime; |
20658947 FC |
392 | } |
393 | ||
394 | // ------------------------------------------------------------------------ | |
0316808c | 395 | // Convenience setters/getters |
20658947 FC |
396 | // ------------------------------------------------------------------------ |
397 | ||
0316808c FC |
398 | /** |
399 | * Set the trace cache size. Must be done at initialization time. | |
0bfb7d06 | 400 | * |
0316808c FC |
401 | * @param cacheSize The trace cache size |
402 | */ | |
403 | protected void setCacheSize(final int cacheSize) { | |
404 | fCacheSize = cacheSize; | |
405 | } | |
406 | ||
407 | /** | |
408 | * Set the trace known number of events. This can be quite dynamic | |
409 | * during indexing or for live traces. | |
0bfb7d06 | 410 | * |
0316808c FC |
411 | * @param nbEvents The number of events |
412 | */ | |
413 | protected synchronized void setNbEvents(final long nbEvents) { | |
414 | fNbEvents = (nbEvents > 0) ? nbEvents : 0; | |
415 | } | |
416 | ||
20658947 FC |
417 | /** |
418 | * Update the trace events time range | |
0bfb7d06 | 419 | * |
20658947 FC |
420 | * @param range the new time range |
421 | */ | |
422 | protected void setTimeRange(final TmfTimeRange range) { | |
4593bd5b AM |
423 | fStartTime = range.getStartTime(); |
424 | fEndTime = range.getEndTime(); | |
20658947 FC |
425 | } |
426 | ||
427 | /** | |
428 | * Update the trace chronologically first event timestamp | |
0bfb7d06 | 429 | * |
20658947 FC |
430 | * @param startTime the new first event timestamp |
431 | */ | |
432 | protected void setStartTime(final ITmfTimestamp startTime) { | |
4593bd5b | 433 | fStartTime = startTime; |
20658947 FC |
434 | } |
435 | ||
436 | /** | |
437 | * Update the trace chronologically last event timestamp | |
0bfb7d06 | 438 | * |
20658947 FC |
439 | * @param endTime the new last event timestamp |
440 | */ | |
441 | protected void setEndTime(final ITmfTimestamp endTime) { | |
4593bd5b | 442 | fEndTime = endTime; |
20658947 FC |
443 | } |
444 | ||
445 | /** | |
0316808c | 446 | * Set the polling interval for live traces (default = 0 = no streaming). |
0bfb7d06 | 447 | * |
20658947 FC |
448 | * @param interval the new trace streaming interval |
449 | */ | |
450 | protected void setStreamingInterval(final long interval) { | |
1703b536 | 451 | fStreamingInterval = (interval > 0) ? interval : 0; |
146a887c FC |
452 | } |
453 | ||
0316808c FC |
454 | /** |
455 | * Set the trace indexer. Must be done at initialization time. | |
0bfb7d06 | 456 | * |
0316808c FC |
457 | * @param indexer the trace indexer |
458 | */ | |
6256d8ad | 459 | protected void setIndexer(final ITmfTraceIndexer indexer) { |
0316808c FC |
460 | fIndexer = indexer; |
461 | } | |
462 | ||
463 | /** | |
464 | * Set the trace parser. Must be done at initialization time. | |
0bfb7d06 | 465 | * |
0316808c FC |
466 | * @param parser the new trace parser |
467 | */ | |
6256d8ad | 468 | protected void setParser(final ITmfEventParser parser) { |
0316808c FC |
469 | fParser = parser; |
470 | } | |
471 | ||
09e86496 | 472 | // ------------------------------------------------------------------------ |
7e6347b0 | 473 | // ITmfTrace - SeekEvent operations (returning a trace context) |
09e86496 FC |
474 | // ------------------------------------------------------------------------ |
475 | ||
476 | /* (non-Javadoc) | |
7e6347b0 | 477 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#seekEvent(long) |
1b70b6dc PT |
478 | */ |
479 | @Override | |
7e6347b0 | 480 | public synchronized ITmfContext seekEvent(final long rank) { |
09e86496 | 481 | |
7e6347b0 | 482 | // A rank <= 0 indicates to seek the first event |
2352aed9 | 483 | if (rank <= 0) { |
1e1bef82 | 484 | ITmfContext context = seekEvent((ITmfLocation) null); |
2352aed9 FC |
485 | context.setRank(0); |
486 | return context; | |
487 | } | |
09e86496 | 488 | |
09e86496 | 489 | // Position the trace at the checkpoint |
7e6347b0 | 490 | final ITmfContext context = fIndexer.seekIndex(rank); |
09e86496 FC |
491 | |
492 | // And locate the requested event context | |
7e6347b0 FC |
493 | long pos = context.getRank(); |
494 | if (pos < rank) { | |
c32744d6 | 495 | ITmfEvent event = getNext(context); |
0bfb7d06 | 496 | while ((event != null) && (++pos < rank)) { |
c32744d6 | 497 | event = getNext(context); |
7e6347b0 | 498 | } |
09e86496 FC |
499 | } |
500 | return context; | |
1b70b6dc PT |
501 | } |
502 | ||
09e86496 | 503 | /* (non-Javadoc) |
7e6347b0 | 504 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#seekEvent(org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp) |
09e86496 FC |
505 | */ |
506 | @Override | |
7e6347b0 | 507 | public synchronized ITmfContext seekEvent(final ITmfTimestamp timestamp) { |
09e86496 | 508 | |
7e6347b0 | 509 | // A null timestamp indicates to seek the first event |
2352aed9 | 510 | if (timestamp == null) { |
1e1bef82 | 511 | ITmfContext context = seekEvent((ITmfLocation) null); |
2352aed9 FC |
512 | context.setRank(0); |
513 | return context; | |
514 | } | |
09e86496 | 515 | |
1703b536 | 516 | // Position the trace at the checkpoint |
408e65d2 | 517 | ITmfContext context = fIndexer.seekIndex(timestamp); |
09e86496 FC |
518 | |
519 | // And locate the requested event context | |
7e6347b0 | 520 | final ITmfContext nextEventContext = context.clone(); // Must use clone() to get the right subtype... |
c32744d6 | 521 | ITmfEvent event = getNext(nextEventContext); |
7e6347b0 | 522 | while (event != null && event.getTimestamp().compareTo(timestamp, false) < 0) { |
4c9f2944 | 523 | context.dispose(); |
3cec7398 | 524 | context = nextEventContext.clone(); |
c32744d6 | 525 | event = getNext(nextEventContext); |
09e86496 | 526 | } |
4c9f2944 | 527 | nextEventContext.dispose(); |
0316808c FC |
528 | if (event == null) { |
529 | context.setLocation(null); | |
530 | context.setRank(ITmfContext.UNKNOWN_RANK); | |
531 | } | |
09e86496 FC |
532 | return context; |
533 | } | |
0283f7ff | 534 | |
09e86496 FC |
535 | // ------------------------------------------------------------------------ |
536 | // ITmfTrace - Read operations (returning an actual event) | |
537 | // ------------------------------------------------------------------------ | |
538 | ||
d337369a | 539 | /* (non-Javadoc) |
b4f71e4a | 540 | * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#readNextEvent(org.eclipse.linuxtools.tmf.core.trace.ITmfContext) |
abfad0aa | 541 | */ |
d4011df2 | 542 | @Override |
6256d8ad | 543 | public synchronized ITmfEvent getNext(final ITmfContext context) { |
09e86496 | 544 | // parseEvent() does not update the context |
6256d8ad | 545 | final ITmfEvent event = fParser.parseEvent(context); |
09e86496 | 546 | if (event != null) { |
d337369a | 547 | updateAttributes(context, event.getTimestamp()); |
09e86496 FC |
548 | context.setLocation(getCurrentLocation()); |
549 | context.increaseRank(); | |
550 | processEvent(event); | |
551 | } | |
552 | return event; | |
553 | } | |
554 | ||
555 | /** | |
d337369a | 556 | * Hook for special event processing by the concrete class |
7e6347b0 | 557 | * (called by TmfTrace.getEvent()) |
0bfb7d06 | 558 | * |
d337369a | 559 | * @param event the event |
09e86496 FC |
560 | */ |
561 | protected void processEvent(final ITmfEvent event) { | |
d337369a | 562 | // Do nothing |
09e86496 FC |
563 | } |
564 | ||
d337369a FC |
565 | /** |
566 | * Update the trace attributes | |
0bfb7d06 | 567 | * |
d337369a | 568 | * @param context the current trace context |
2848c377 | 569 | * @param timestamp the corresponding timestamp |
d337369a FC |
570 | */ |
571 | protected synchronized void updateAttributes(final ITmfContext context, final ITmfTimestamp timestamp) { | |
0bfb7d06 | 572 | if (fStartTime.equals(TmfTimestamp.BIG_BANG) || (fStartTime.compareTo(timestamp, false) > 0)) { |
4593bd5b | 573 | fStartTime = timestamp; |
09e86496 | 574 | } |
0bfb7d06 | 575 | if (fEndTime.equals(TmfTimestamp.BIG_CRUNCH) || (fEndTime.compareTo(timestamp, false) < 0)) { |
4593bd5b | 576 | fEndTime = timestamp; |
09e86496 FC |
577 | } |
578 | if (context.hasValidRank()) { | |
d337369a | 579 | long rank = context.getRank(); |
09e86496 FC |
580 | if (fNbEvents <= rank) { |
581 | fNbEvents = rank + 1; | |
582 | } | |
200789b3 AM |
583 | if (fIndexer != null) { |
584 | fIndexer.updateIndex(context, timestamp); | |
585 | } | |
09e86496 | 586 | } |
abfad0aa FC |
587 | } |
588 | ||
3791b5df | 589 | // ------------------------------------------------------------------------ |
d337369a | 590 | // TmfDataProvider |
3791b5df FC |
591 | // ------------------------------------------------------------------------ |
592 | ||
d337369a FC |
593 | /* (non-Javadoc) |
594 | * @see org.eclipse.linuxtools.tmf.core.component.TmfDataProvider#armRequest(org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest) | |
595 | */ | |
3791b5df | 596 | @Override |
6256d8ad AM |
597 | protected ITmfContext armRequest(final ITmfDataRequest request) { |
598 | if ((request instanceof ITmfEventRequest) | |
599 | && !TmfTimestamp.BIG_BANG.equals(((ITmfEventRequest) request).getRange().getStartTime()) | |
0bfb7d06 | 600 | && (request.getIndex() == 0)) |
0316808c | 601 | { |
6256d8ad AM |
602 | final ITmfContext context = seekEvent(((ITmfEventRequest) request).getRange().getStartTime()); |
603 | ((ITmfEventRequest) request).setStartIndex((int) context.getRank()); | |
3791b5df FC |
604 | return context; |
605 | ||
606 | } | |
607 | return seekEvent(request.getIndex()); | |
608 | } | |
609 | ||
3791b5df | 610 | // ------------------------------------------------------------------------ |
09e86496 | 611 | // toString |
3791b5df FC |
612 | // ------------------------------------------------------------------------ |
613 | ||
d337369a FC |
614 | /* (non-Javadoc) |
615 | * @see java.lang.Object#toString() | |
616 | */ | |
12c155f5 | 617 | @Override |
09e86496 | 618 | @SuppressWarnings("nls") |
afc86f78 | 619 | public synchronized String toString() { |
20658947 FC |
620 | return "TmfTrace [fPath=" + fPath + ", fCacheSize=" + fCacheSize |
621 | + ", fNbEvents=" + fNbEvents + ", fStartTime=" + fStartTime | |
622 | + ", fEndTime=" + fEndTime + ", fStreamingInterval=" + fStreamingInterval + "]"; | |
12c155f5 FC |
623 | } |
624 | ||
8c8bf09f | 625 | } |