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8c8bf09f | 1 | /******************************************************************************* |
e31e01e8 | 2 | * Copyright (c) 2009, 2010 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: | |
10 | * Francois Chouinard - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
6c13869b | 13 | package org.eclipse.linuxtools.tmf.core.trace; |
8c8bf09f | 14 | |
6f4a1d2b | 15 | import java.io.File; |
62d1696a | 16 | import java.io.FileNotFoundException; |
62d1696a | 17 | import java.util.Collections; |
8c8bf09f ASL |
18 | import java.util.Vector; |
19 | ||
12c155f5 | 20 | import org.eclipse.core.resources.IProject; |
05bd3318 FC |
21 | import org.eclipse.core.runtime.IProgressMonitor; |
22 | import org.eclipse.core.runtime.IStatus; | |
c7e2f194 | 23 | import org.eclipse.core.runtime.Path; |
05bd3318 FC |
24 | import org.eclipse.core.runtime.Status; |
25 | import org.eclipse.core.runtime.jobs.Job; | |
6c13869b FC |
26 | import org.eclipse.linuxtools.tmf.core.component.TmfEventProvider; |
27 | import org.eclipse.linuxtools.tmf.core.event.TmfEvent; | |
28 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; | |
29 | import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp; | |
30 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest; | |
31 | import org.eclipse.linuxtools.tmf.core.request.ITmfEventRequest; | |
32 | import org.eclipse.linuxtools.tmf.core.request.TmfDataRequest; | |
33 | import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest; | |
34 | import org.eclipse.linuxtools.tmf.core.signal.TmfTraceUpdatedSignal; | |
8c8bf09f ASL |
35 | |
36 | /** | |
146a887c | 37 | * <b><u>TmfTrace</u></b> |
8c8bf09f | 38 | * <p> |
12c155f5 FC |
39 | * Abstract implementation of ITmfTrace. It should be sufficient to extend this class and provide implementation for |
40 | * <code>getCurrentLocation()</code> and <code>seekLocation()</code>, as well as a proper parser, to have a working | |
4e3aa37d | 41 | * concrete implementation. |
ff4ed569 | 42 | * <p> |
12c155f5 FC |
43 | * Note: The notion of event rank is still under heavy discussion. Although used by the Events View and probably useful |
44 | * in the general case, there is no easy way to implement it for LTTng (actually a strong case is being made that this | |
45 | * is useless). | |
ff4ed569 | 46 | * <p> |
12c155f5 FC |
47 | * That it is not supported by LTTng does by no mean indicate that it is not useful for (just about) every other tracing |
48 | * tool. Therefore, this class provides a minimal (and partial) implementation of rank. However, the current | |
ff4ed569 | 49 | * implementation should not be relied on in the general case. |
54d55ced | 50 | * |
4e3aa37d | 51 | * TODO: Add support for live streaming (notifications, incremental indexing, ...) |
8c8bf09f | 52 | */ |
12c155f5 | 53 | public abstract class TmfTrace<T extends TmfEvent> extends TmfEventProvider<T> implements ITmfTrace<T>, Cloneable { |
62d1696a | 54 | |
e31e01e8 | 55 | // ------------------------------------------------------------------------ |
62d1696a | 56 | // Constants |
e31e01e8 | 57 | // ------------------------------------------------------------------------ |
62d1696a FC |
58 | |
59 | // The default number of events to cache | |
12c155f5 | 60 | // TODO: Make the DEFAULT_CACHE_SIZE a preference |
b12f4544 | 61 | public static final int DEFAULT_INDEX_PAGE_SIZE = 50000; |
8c8bf09f | 62 | |
e31e01e8 | 63 | // ------------------------------------------------------------------------ |
8c8bf09f | 64 | // Attributes |
e31e01e8 | 65 | // ------------------------------------------------------------------------ |
8c8bf09f | 66 | |
b0a282fb | 67 | // The trace path |
12c155f5 | 68 | private String fPath; |
b0a282fb | 69 | |
00641a97 | 70 | // The trace name |
c5b45b39 | 71 | private String fTraceName; |
00641a97 | 72 | |
8d2e2848 | 73 | // The cache page size AND checkpoints interval |
12c155f5 | 74 | protected int fIndexPageSize = DEFAULT_INDEX_PAGE_SIZE; |
62d1696a FC |
75 | |
76 | // The set of event stream checkpoints (for random access) | |
9f584e4c | 77 | protected Vector<TmfCheckpoint> fCheckpoints = new Vector<TmfCheckpoint>(); |
62d1696a FC |
78 | |
79 | // The number of events collected | |
a3fe52fc | 80 | protected long fNbEvents = 0; |
62d1696a FC |
81 | |
82 | // The time span of the event stream | |
cb866e08 | 83 | private TmfTimestamp fStartTime = TmfTimestamp.BigCrunch; |
12c155f5 | 84 | private TmfTimestamp fEndTime = TmfTimestamp.BigBang; |
62d1696a | 85 | |
e31e01e8 | 86 | // ------------------------------------------------------------------------ |
50adc88e | 87 | // Constructors |
e31e01e8 | 88 | // ------------------------------------------------------------------------ |
8c8bf09f | 89 | |
12c155f5 | 90 | public TmfTrace() { |
00641a97 | 91 | super(); |
12c155f5 FC |
92 | } |
93 | ||
94 | @Override | |
95 | public void initTrace(String path, Class<T> eventType) throws FileNotFoundException { | |
96c6806f | 96 | initTmfTrace(path, eventType, DEFAULT_INDEX_PAGE_SIZE, false, null); |
12c155f5 FC |
97 | } |
98 | ||
99 | @Override | |
100 | public void initTrace(String path, Class<T> eventType, int cacheSize) throws FileNotFoundException { | |
96c6806f | 101 | initTmfTrace(path, eventType, cacheSize, false, null); |
12c155f5 FC |
102 | } |
103 | ||
104 | @Override | |
105 | public void initTrace(String path, Class<T> eventType, boolean indexTrace) throws FileNotFoundException { | |
96c6806f | 106 | initTmfTrace(path, eventType, DEFAULT_INDEX_PAGE_SIZE, indexTrace, null); |
12c155f5 FC |
107 | } |
108 | ||
109 | @Override | |
110 | public void initTrace(String path, Class<T> eventType, int cacheSize, boolean indexTrace) throws FileNotFoundException { | |
96c6806f | 111 | initTmfTrace(path, eventType, cacheSize, indexTrace, null); |
c5b45b39 FC |
112 | } |
113 | ||
96c6806f PT |
114 | @Override |
115 | public void initTrace(String path, Class<T> eventType, int cacheSize, boolean indexTrace, String name) throws FileNotFoundException { | |
116 | initTmfTrace(path, eventType, cacheSize, indexTrace, name); | |
117 | } | |
118 | ||
119 | private void initTmfTrace(String path, Class<T> eventType, int cacheSize, boolean indexTrace, String name) throws FileNotFoundException { | |
12c155f5 | 120 | fPath = path; |
96c6806f PT |
121 | if (name != null) { |
122 | fTraceName = name; | |
123 | } | |
c5b45b39 FC |
124 | if (fTraceName == null) { |
125 | fTraceName = ""; //$NON-NLS-1$ | |
00641a97 | 126 | if (path != null) { |
c7e2f194 | 127 | int sep = path.lastIndexOf(Path.SEPARATOR); |
c5b45b39 | 128 | fTraceName = (sep >= 0) ? path.substring(sep + 1) : path; |
00641a97 | 129 | } |
12c155f5 | 130 | } |
c5b45b39 | 131 | super.init(fTraceName, eventType); |
12c155f5 | 132 | fIndexPageSize = (cacheSize > 0) ? cacheSize : DEFAULT_INDEX_PAGE_SIZE; |
12c155f5 FC |
133 | if (indexTrace) |
134 | indexTrace(false); | |
135 | } | |
136 | ||
137 | @Override | |
138 | public boolean validate(IProject project, String path) { | |
139 | File file = new File(path); | |
140 | return file.exists(); | |
141 | } | |
142 | ||
ff4ed569 FC |
143 | /** |
144 | * @param path | |
145 | * @throws FileNotFoundException | |
146 | */ | |
ce785d7d | 147 | protected TmfTrace(String name, Class<T> type, String path) throws FileNotFoundException { |
12c155f5 | 148 | this(name, type, path, DEFAULT_INDEX_PAGE_SIZE, true); |
ff4ed569 FC |
149 | } |
150 | ||
62d1696a | 151 | /** |
e31e01e8 FC |
152 | * @param path |
153 | * @param cacheSize | |
62d1696a FC |
154 | * @throws FileNotFoundException |
155 | */ | |
ce785d7d | 156 | protected TmfTrace(String name, Class<T> type, String path, int cacheSize) throws FileNotFoundException { |
12c155f5 | 157 | this(name, type, path, cacheSize, true); |
05bd3318 FC |
158 | } |
159 | ||
160 | /** | |
161 | * @param path | |
162 | * @param indexTrace | |
163 | * @throws FileNotFoundException | |
164 | */ | |
165 | protected TmfTrace(String name, Class<T> type, String path, boolean indexTrace) throws FileNotFoundException { | |
12c155f5 | 166 | this(name, type, path, DEFAULT_INDEX_PAGE_SIZE, indexTrace); |
05bd3318 FC |
167 | } |
168 | ||
169 | /** | |
170 | * @param path | |
171 | * @param cacheSize | |
172 | * @param indexTrace | |
173 | * @throws FileNotFoundException | |
174 | */ | |
175 | protected TmfTrace(String name, Class<T> type, String path, int cacheSize, boolean indexTrace) throws FileNotFoundException { | |
00641a97 | 176 | super(); |
c5b45b39 | 177 | fTraceName = name; |
00641a97 | 178 | initTrace(path, type, cacheSize, indexTrace); |
8c8bf09f ASL |
179 | } |
180 | ||
ff4ed569 | 181 | @SuppressWarnings("unchecked") |
12c155f5 FC |
182 | @Override |
183 | public TmfTrace<T> clone() throws CloneNotSupportedException { | |
184 | TmfTrace<T> clone = (TmfTrace<T>) super.clone(); | |
185 | clone.fCheckpoints = fCheckpoints; | |
186 | clone.fStartTime = new TmfTimestamp(fStartTime); | |
187 | clone.fEndTime = new TmfTimestamp(fEndTime); | |
188 | return clone; | |
8c8bf09f ASL |
189 | } |
190 | ||
e31e01e8 | 191 | // ------------------------------------------------------------------------ |
8c8bf09f | 192 | // Accessors |
e31e01e8 | 193 | // ------------------------------------------------------------------------ |
8c8bf09f | 194 | |
62d1696a | 195 | /** |
b0a282fb | 196 | * @return the trace path |
62d1696a | 197 | */ |
d4011df2 | 198 | @Override |
12c155f5 | 199 | public String getPath() { |
b0a282fb | 200 | return fPath; |
8c8bf09f ASL |
201 | } |
202 | ||
62d1696a FC |
203 | /* (non-Javadoc) |
204 | * @see org.eclipse.linuxtools.tmf.stream.ITmfEventStream#getNbEvents() | |
205 | */ | |
d4011df2 | 206 | @Override |
12c155f5 | 207 | public long getNbEvents() { |
62d1696a | 208 | return fNbEvents; |
8c8bf09f ASL |
209 | } |
210 | ||
b0a282fb FC |
211 | /** |
212 | * @return the size of the cache | |
213 | */ | |
d4011df2 | 214 | @Override |
12c155f5 | 215 | public int getCacheSize() { |
9f584e4c | 216 | return fIndexPageSize; |
b0a282fb FC |
217 | } |
218 | ||
62d1696a FC |
219 | /* (non-Javadoc) |
220 | * @see org.eclipse.linuxtools.tmf.stream.ITmfEventStream#getTimeRange() | |
221 | */ | |
d4011df2 | 222 | @Override |
12c155f5 | 223 | public TmfTimeRange getTimeRange() { |
cb866e08 | 224 | return new TmfTimeRange(fStartTime, fEndTime); |
8c8bf09f ASL |
225 | } |
226 | ||
e31e01e8 FC |
227 | /* (non-Javadoc) |
228 | * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#getStartTime() | |
229 | */ | |
d4011df2 | 230 | @Override |
12c155f5 FC |
231 | public TmfTimestamp getStartTime() { |
232 | return fStartTime; | |
146a887c FC |
233 | } |
234 | ||
e31e01e8 FC |
235 | /* (non-Javadoc) |
236 | * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#getEndTime() | |
237 | */ | |
d4011df2 | 238 | @Override |
12c155f5 FC |
239 | public TmfTimestamp getEndTime() { |
240 | return fEndTime; | |
146a887c FC |
241 | } |
242 | ||
ff4ed569 | 243 | @SuppressWarnings("unchecked") |
12c155f5 FC |
244 | public Vector<TmfCheckpoint> getCheckpoints() { |
245 | return (Vector<TmfCheckpoint>) fCheckpoints.clone(); | |
54d55ced FC |
246 | } |
247 | ||
abfad0aa | 248 | /** |
12c155f5 FC |
249 | * Returns the rank of the first event with the requested timestamp. If none, returns the index of the next event |
250 | * (if any). | |
251 | * | |
abfad0aa FC |
252 | * @param timestamp |
253 | * @return | |
254 | */ | |
d4011df2 | 255 | @Override |
12c155f5 | 256 | public long getRank(TmfTimestamp timestamp) { |
abfad0aa FC |
257 | TmfContext context = seekEvent(timestamp); |
258 | return context.getRank(); | |
259 | } | |
260 | ||
e31e01e8 | 261 | // ------------------------------------------------------------------------ |
8c8bf09f | 262 | // Operators |
e31e01e8 | 263 | // ------------------------------------------------------------------------ |
8c8bf09f | 264 | |
4e3aa37d | 265 | protected void setTimeRange(TmfTimeRange range) { |
12c155f5 FC |
266 | fStartTime = range.getStartTime(); |
267 | fEndTime = range.getEndTime(); | |
4e3aa37d FC |
268 | } |
269 | ||
270 | protected void setStartTime(TmfTimestamp startTime) { | |
12c155f5 | 271 | fStartTime = startTime; |
4e3aa37d FC |
272 | } |
273 | ||
274 | protected void setEndTime(TmfTimestamp endTime) { | |
12c155f5 FC |
275 | fEndTime = endTime; |
276 | } | |
277 | ||
278 | // ------------------------------------------------------------------------ | |
279 | // TmfProvider | |
280 | // ------------------------------------------------------------------------ | |
281 | ||
282 | @Override | |
283 | public ITmfContext armRequest(ITmfDataRequest<T> request) { | |
284 | if (request instanceof ITmfEventRequest<?> | |
285 | && !TmfTimestamp.BigBang.equals(((ITmfEventRequest<T>) request).getRange().getStartTime()) && request.getIndex() == 0) { | |
286 | ITmfContext context = seekEvent(((ITmfEventRequest<T>) request).getRange().getStartTime()); | |
287 | ((ITmfEventRequest<T>) request).setStartIndex((int) context.getRank()); | |
288 | return context; | |
289 | ||
290 | } | |
291 | return seekEvent(request.getIndex()); | |
292 | } | |
293 | ||
294 | /** | |
295 | * Return the next piece of data based on the context supplied. The context would typically be updated for the | |
296 | * subsequent read. | |
297 | * | |
298 | * @param context | |
299 | * @return | |
300 | */ | |
301 | @SuppressWarnings("unchecked") | |
302 | @Override | |
303 | public T getNext(ITmfContext context) { | |
304 | if (context instanceof TmfContext) { | |
305 | return (T) getNextEvent((TmfContext) context); | |
306 | } | |
307 | return null; | |
308 | } | |
309 | ||
310 | // ------------------------------------------------------------------------ | |
311 | // ITmfTrace | |
312 | // ------------------------------------------------------------------------ | |
e31e01e8 | 313 | |
146a887c FC |
314 | /* (non-Javadoc) |
315 | * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#seekEvent(org.eclipse.linuxtools.tmf.event.TmfTimestamp) | |
316 | */ | |
d4011df2 | 317 | @Override |
12c155f5 | 318 | public TmfContext seekEvent(TmfTimestamp timestamp) { |
62d1696a | 319 | |
12c155f5 FC |
320 | if (timestamp == null) { |
321 | timestamp = TmfTimestamp.BigBang; | |
322 | } | |
4e3aa37d | 323 | |
12c155f5 FC |
324 | // First, find the right checkpoint |
325 | int index = Collections.binarySearch(fCheckpoints, new TmfCheckpoint(timestamp, null)); | |
62d1696a | 326 | |
8d2e2848 | 327 | // In the very likely case that the checkpoint was not found, bsearch |
62d1696a FC |
328 | // returns its negated would-be location (not an offset...). From that |
329 | // index, we can then position the stream and get the event. | |
330 | if (index < 0) { | |
331 | index = Math.max(0, -(index + 2)); | |
332 | } | |
333 | ||
334 | // Position the stream at the checkpoint | |
452ad365 | 335 | ITmfLocation<?> location; |
e31e01e8 | 336 | synchronized (fCheckpoints) { |
12c155f5 FC |
337 | if (fCheckpoints.size() > 0) { |
338 | if (index >= fCheckpoints.size()) { | |
339 | index = fCheckpoints.size() - 1; | |
340 | } | |
341 | location = fCheckpoints.elementAt(index).getLocation(); | |
342 | } else { | |
343 | location = null; | |
344 | } | |
8d2e2848 | 345 | } |
54d55ced FC |
346 | TmfContext context = seekLocation(location); |
347 | context.setRank(index * fIndexPageSize); | |
62d1696a | 348 | |
54d55ced | 349 | // And locate the event |
ff4ed569 | 350 | TmfContext nextEventContext = context.clone(); // Must use clone() to get the right subtype... |
62d1696a FC |
351 | TmfEvent event = getNextEvent(nextEventContext); |
352 | while (event != null && event.getTimestamp().compareTo(timestamp, false) < 0) { | |
12c155f5 FC |
353 | context.setLocation(nextEventContext.getLocation().clone()); |
354 | context.updateRank(1); | |
355 | event = getNextEvent(nextEventContext); | |
62d1696a FC |
356 | } |
357 | ||
54d55ced | 358 | return context; |
62d1696a FC |
359 | } |
360 | ||
146a887c FC |
361 | /* (non-Javadoc) |
362 | * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#seekEvent(int) | |
363 | */ | |
d4011df2 | 364 | @Override |
12c155f5 | 365 | public TmfContext seekEvent(long rank) { |
62d1696a FC |
366 | |
367 | // Position the stream at the previous checkpoint | |
9f584e4c | 368 | int index = (int) rank / fIndexPageSize; |
452ad365 | 369 | ITmfLocation<?> location; |
e31e01e8 | 370 | synchronized (fCheckpoints) { |
12c155f5 FC |
371 | if (fCheckpoints.size() == 0) { |
372 | location = null; | |
373 | } else { | |
374 | if (index >= fCheckpoints.size()) { | |
375 | index = fCheckpoints.size() - 1; | |
376 | } | |
377 | location = fCheckpoints.elementAt(index).getLocation(); | |
378 | } | |
8d2e2848 | 379 | } |
54d55ced | 380 | |
9f584e4c FC |
381 | TmfContext context = seekLocation(location); |
382 | long pos = index * fIndexPageSize; | |
383 | context.setRank(pos); | |
e31e01e8 | 384 | |
9f584e4c | 385 | if (pos < rank) { |
e31e01e8 | 386 | TmfEvent event = getNextEvent(context); |
9f584e4c | 387 | while (event != null && ++pos < rank) { |
12c155f5 | 388 | event = getNextEvent(context); |
e31e01e8 | 389 | } |
165c977c | 390 | } |
62d1696a | 391 | |
8f50c396 | 392 | return context; |
8c8bf09f ASL |
393 | } |
394 | ||
12c155f5 FC |
395 | /* |
396 | * (non-Javadoc) | |
397 | * | |
398 | * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#getNextEvent(org.eclipse. | |
399 | * linuxtools.tmf.trace.ITmfTrace.TraceContext) | |
400 | */ | |
401 | @Override | |
402 | public synchronized TmfEvent getNextEvent(TmfContext context) { | |
403 | // parseEvent() does not update the context | |
404 | TmfEvent event = parseEvent(context); | |
405 | if (event != null) { | |
406 | updateIndex(context, context.getRank(), event.getTimestamp()); | |
407 | context.setLocation(getCurrentLocation()); | |
408 | context.updateRank(1); | |
409 | processEvent(event); | |
410 | } | |
411 | return event; | |
412 | } | |
550d787e | 413 | |
12c155f5 FC |
414 | protected synchronized void updateIndex(ITmfContext context, long rank, TmfTimestamp timestamp) { |
415 | if (fStartTime.compareTo(timestamp, false) > 0) | |
416 | fStartTime = timestamp; | |
417 | if (fEndTime.compareTo(timestamp, false) < 0) | |
418 | fEndTime = timestamp; | |
419 | if (context.isValidRank()) { | |
420 | if (fNbEvents <= rank) | |
421 | fNbEvents = rank + 1; | |
422 | // Build the index as we go along | |
423 | if ((rank % fIndexPageSize) == 0) { | |
424 | // Determine the table position | |
425 | long position = rank / fIndexPageSize; | |
426 | // Add new entry at proper location (if empty) | |
427 | if (fCheckpoints.size() == position) { | |
428 | ITmfLocation<?> location = context.getLocation().clone(); | |
429 | fCheckpoints.add(new TmfCheckpoint(timestamp.clone(), location)); | |
430 | // System.out.println(getName() + "[" + (fCheckpoints.size() | |
431 | // - 1) + "] " + timestamp + ", " + location.toString()); | |
432 | } | |
433 | } | |
434 | } | |
435 | } | |
4e3aa37d | 436 | |
e31e01e8 | 437 | /** |
12c155f5 FC |
438 | * Hook for special processing by the concrete class (called by getNextEvent()) |
439 | * | |
440 | * @param event | |
441 | */ | |
442 | protected void processEvent(TmfEvent event) { | |
443 | // Do nothing by default | |
444 | } | |
445 | ||
446 | // ------------------------------------------------------------------------ | |
447 | // toString | |
448 | // ------------------------------------------------------------------------ | |
449 | ||
450 | /* (non-Javadoc) | |
451 | * @see java.lang.Object#toString() | |
4e3aa37d | 452 | */ |
d4011df2 | 453 | @Override |
12c155f5 FC |
454 | @SuppressWarnings("nls") |
455 | public String toString() { | |
456 | return "[TmfTrace (" + getName() + ")]"; | |
457 | } | |
458 | ||
664902f7 FC |
459 | // ------------------------------------------------------------------------ |
460 | // Indexing | |
461 | // ------------------------------------------------------------------------ | |
462 | ||
12c155f5 FC |
463 | /* |
464 | * The purpose of the index is to keep the information needed to rapidly | |
465 | * restore the traces contexts at regular intervals (every INDEX_PAGE_SIZE | |
466 | * event). | |
467 | */ | |
83e13355 | 468 | |
8e31f2d2 | 469 | @SuppressWarnings({ "unchecked" }) |
a79913eb | 470 | protected void indexTrace(boolean waitForCompletion) { |
83e13355 | 471 | |
12c155f5 FC |
472 | final Job job = new Job("Indexing " + getName() + "...") { //$NON-NLS-1$ //$NON-NLS-2$ |
473 | @Override | |
474 | protected IStatus run(IProgressMonitor monitor) { | |
475 | while (!monitor.isCanceled()) { | |
476 | try { | |
477 | Thread.sleep(100); | |
478 | } catch (InterruptedException e) { | |
479 | return Status.OK_STATUS; | |
480 | } | |
481 | } | |
482 | monitor.done(); | |
483 | return Status.OK_STATUS; | |
484 | } | |
485 | }; | |
486 | job.schedule(); | |
487 | ||
488 | fCheckpoints.clear(); | |
489 | ITmfEventRequest<TmfEvent> request = new TmfEventRequest<TmfEvent>(TmfEvent.class, TmfTimeRange.Eternity, TmfDataRequest.ALL_DATA, | |
490 | fIndexPageSize, ITmfDataRequest.ExecutionType.BACKGROUND) { | |
491 | ||
492 | TmfTimestamp startTime = null; | |
493 | TmfTimestamp lastTime = null; | |
83e13355 FC |
494 | |
495 | @Override | |
496 | public void handleData(TmfEvent event) { | |
497 | super.handleData(event); | |
498 | if (event != null) { | |
499 | TmfTimestamp ts = event.getTimestamp(); | |
500 | if (startTime == null) | |
501 | startTime = new TmfTimestamp(ts); | |
502 | lastTime = new TmfTimestamp(ts); | |
503 | ||
64267c9d | 504 | if ((getNbRead() % fIndexPageSize) == 0) { |
83e13355 FC |
505 | updateTrace(); |
506 | } | |
507 | } | |
508 | } | |
509 | ||
510 | @Override | |
511 | public void handleSuccess() { | |
512 | updateTrace(); | |
513 | } | |
514 | ||
05bd3318 FC |
515 | @Override |
516 | public void handleCompleted() { | |
12c155f5 FC |
517 | job.cancel(); |
518 | super.handleCompleted(); | |
05bd3318 FC |
519 | } |
520 | ||
83e13355 FC |
521 | private void updateTrace() { |
522 | int nbRead = getNbRead(); | |
523 | if (nbRead != 0) { | |
524 | fStartTime = startTime; | |
525 | fEndTime = lastTime; | |
12c155f5 | 526 | fNbEvents = nbRead; |
83e13355 FC |
527 | notifyListeners(); |
528 | } | |
529 | } | |
530 | }; | |
531 | ||
532 | sendRequest((ITmfDataRequest<T>) request); | |
533 | if (waitForCompletion) | |
534 | try { | |
535 | request.waitForCompletion(); | |
536 | } catch (InterruptedException e) { | |
537 | e.printStackTrace(); | |
538 | } | |
539 | } | |
540 | ||
12c155f5 FC |
541 | protected void notifyListeners() { |
542 | broadcast(new TmfTraceUpdatedSignal(this, this, new TmfTimeRange(fStartTime, fEndTime))); | |
543 | } | |
8c8bf09f | 544 | } |