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8a6ff07f | 1 | /******************************************************************************* |
ed902a2b | 2 | * Copyright (c) 2013, 2015 École Polytechnique de Montréal |
8a6ff07f GB |
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 | * Geneviève Bastien - Initial API and implementation | |
baa96b1d | 11 | * Bernd Hufmann - Integrated history builder functionality |
8a6ff07f GB |
12 | *******************************************************************************/ |
13 | ||
2bdf0193 | 14 | package org.eclipse.tracecompass.tmf.core.statesystem; |
8a6ff07f | 15 | |
5db5a3a4 AM |
16 | import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull; |
17 | ||
8a6ff07f | 18 | import java.io.File; |
baa96b1d | 19 | import java.io.IOException; |
5237a931 | 20 | import java.util.Collections; |
09ec275e | 21 | import java.util.concurrent.CountDownLatch; |
8a6ff07f GB |
22 | |
23 | import org.eclipse.core.runtime.IProgressMonitor; | |
e1c415b3 | 24 | import org.eclipse.core.runtime.IStatus; |
baa96b1d | 25 | import org.eclipse.core.runtime.NullProgressMonitor; |
baa96b1d | 26 | import org.eclipse.jdt.annotation.Nullable; |
2bdf0193 AM |
27 | import org.eclipse.tracecompass.internal.tmf.core.statesystem.backends.partial.PartialHistoryBackend; |
28 | import org.eclipse.tracecompass.internal.tmf.core.statesystem.backends.partial.PartialStateSystem; | |
e894a508 AM |
29 | import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem; |
30 | import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder; | |
31 | import org.eclipse.tracecompass.statesystem.core.StateSystemFactory; | |
32 | import org.eclipse.tracecompass.statesystem.core.backend.IStateHistoryBackend; | |
33 | import org.eclipse.tracecompass.statesystem.core.backend.InMemoryBackend; | |
34 | import org.eclipse.tracecompass.statesystem.core.backend.NullBackend; | |
35 | import org.eclipse.tracecompass.statesystem.core.backend.historytree.HistoryTreeBackend; | |
36 | import org.eclipse.tracecompass.statesystem.core.backend.historytree.ThreadedHistoryTreeBackend; | |
2bdf0193 AM |
37 | import org.eclipse.tracecompass.tmf.core.analysis.TmfAbstractAnalysisModule; |
38 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; | |
39 | import org.eclipse.tracecompass.tmf.core.exceptions.TmfTraceException; | |
40 | import org.eclipse.tracecompass.tmf.core.request.ITmfEventRequest; | |
41 | import org.eclipse.tracecompass.tmf.core.request.TmfEventRequest; | |
de83d1ab MAL |
42 | import org.eclipse.tracecompass.tmf.core.signal.TmfSignalHandler; |
43 | import org.eclipse.tracecompass.tmf.core.signal.TmfTraceRangeUpdatedSignal; | |
2bdf0193 AM |
44 | import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimeRange; |
45 | import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace; | |
de83d1ab | 46 | import org.eclipse.tracecompass.tmf.core.trace.ITmfTraceCompleteness; |
2bdf0193 | 47 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceManager; |
b8585c7c | 48 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; |
5c5fa260 | 49 | import org.eclipse.tracecompass.tmf.core.trace.experiment.TmfExperiment; |
8a6ff07f GB |
50 | |
51 | /** | |
52 | * Abstract analysis module to generate a state system. It is a base class that | |
53 | * can be used as a shortcut by analysis who just need to build a single state | |
54 | * system with a state provider. | |
55 | * | |
56 | * Analysis implementing this class should only need to provide a state system | |
57 | * and optionally a backend (default to NULL) and, if required, a filename | |
58 | * (defaults to the analysis'ID) | |
59 | * | |
60 | * @author Geneviève Bastien | |
61 | * @since 3.0 | |
62 | */ | |
63 | public abstract class TmfStateSystemAnalysisModule extends TmfAbstractAnalysisModule | |
5237a931 | 64 | implements ITmfAnalysisModuleWithStateSystems { |
8a6ff07f | 65 | |
8a6ff07f GB |
66 | private static final String EXTENSION = ".ht"; //$NON-NLS-1$ |
67 | ||
09ec275e | 68 | private final CountDownLatch fInitialized = new CountDownLatch(1); |
de83d1ab | 69 | private final Object fRequestSyncObj = new Object(); |
09ec275e | 70 | |
baa96b1d BH |
71 | @Nullable private ITmfStateSystemBuilder fStateSystem; |
72 | @Nullable private ITmfStateProvider fStateProvider; | |
73 | @Nullable private IStateHistoryBackend fHtBackend; | |
74 | @Nullable private ITmfEventRequest fRequest; | |
de83d1ab MAL |
75 | @Nullable private TmfTimeRange fTimeRange = null; |
76 | ||
77 | private int fNbRead = 0; | |
5237a931 | 78 | |
8a6ff07f GB |
79 | /** |
80 | * State system backend types | |
81 | * | |
82 | * @author Geneviève Bastien | |
83 | */ | |
84 | protected enum StateSystemBackendType { | |
85 | /** Full history in file */ | |
86 | FULL, | |
87 | /** In memory state system */ | |
88 | INMEM, | |
89 | /** Null history */ | |
90 | NULL, | |
91 | /** State system backed with partial history */ | |
92 | PARTIAL | |
93 | } | |
94 | ||
72221aa4 AM |
95 | /** |
96 | * Retrieve a state system belonging to trace, by passing the ID of the | |
97 | * relevant analysis module. | |
98 | * | |
99 | * This will start the execution of the analysis module, and start the | |
100 | * construction of the state system, if needed. | |
101 | * | |
102 | * @param trace | |
103 | * The trace for which you want the state system | |
104 | * @param moduleId | |
105 | * The ID of the state system analysis module | |
106 | * @return The state system, or null if there was no match | |
107 | * @since 3.1 | |
108 | */ | |
109 | public static @Nullable ITmfStateSystem getStateSystem(ITmfTrace trace, String moduleId) { | |
110 | TmfStateSystemAnalysisModule module = | |
b8585c7c | 111 | TmfTraceUtils.getAnalysisModuleOfClass(trace, TmfStateSystemAnalysisModule.class, moduleId); |
72221aa4 | 112 | if (module != null) { |
e1c415b3 BH |
113 | IStatus status = module.schedule(); |
114 | if (status.isOK()) { | |
115 | module.waitForInitialization(); | |
e1c415b3 BH |
116 | return module.getStateSystem(); |
117 | } | |
72221aa4 AM |
118 | } |
119 | return null; | |
120 | } | |
121 | ||
96811390 GB |
122 | /** |
123 | * Retrieve a state system belonging to trace, by passing the class of the | |
124 | * relevant analysis module. If many modules of the same class exists, the | |
125 | * state system of the first one will be returned. | |
126 | * | |
127 | * This will start the execution of the analysis module, and start the | |
128 | * construction of the state system, if needed. | |
129 | * | |
130 | * @param trace | |
131 | * The trace for which you want the state system | |
132 | * @param clazz | |
133 | * The class of the state system module to retrieve | |
134 | * @return The state system, or null if there was no match | |
135 | */ | |
136 | public static @Nullable ITmfStateSystem getStateSystemByModuleClass(ITmfTrace trace, Class<? extends TmfStateSystemAnalysisModule> clazz) { | |
137 | TmfStateSystemAnalysisModule module = null; | |
138 | for (TmfStateSystemAnalysisModule mod : TmfTraceUtils.getAnalysisModulesOfClass(trace, clazz)) { | |
139 | module = mod; | |
140 | break; | |
141 | } | |
142 | if (module != null) { | |
143 | IStatus status = module.schedule(); | |
144 | if (status.isOK()) { | |
145 | module.waitForInitialization(); | |
146 | return module.getStateSystem(); | |
147 | } | |
148 | } | |
149 | return null; | |
150 | } | |
151 | ||
8a6ff07f GB |
152 | /** |
153 | * Get the state provider for this analysis module | |
154 | * | |
155 | * @return the state provider | |
156 | */ | |
8a6ff07f GB |
157 | protected abstract ITmfStateProvider createStateProvider(); |
158 | ||
159 | /** | |
160 | * Get the state system backend type used by this module | |
161 | * | |
162 | * @return The {@link StateSystemBackendType} | |
163 | */ | |
a3b864c0 AM |
164 | protected StateSystemBackendType getBackendType() { |
165 | /* Using full history by default, sub-classes can override */ | |
166 | return StateSystemBackendType.FULL; | |
167 | } | |
8a6ff07f GB |
168 | |
169 | /** | |
170 | * Get the supplementary file name where to save this state system. The | |
171 | * default is the ID of the analysis followed by the extension. | |
172 | * | |
173 | * @return The supplementary file name | |
174 | */ | |
175 | protected String getSsFileName() { | |
176 | return getId() + EXTENSION; | |
177 | } | |
178 | ||
179 | /** | |
baa96b1d BH |
180 | * Get the state system generated by this analysis, or null if it is not yet |
181 | * created. | |
8a6ff07f GB |
182 | * |
183 | * @return The state system | |
184 | */ | |
baa96b1d | 185 | @Nullable |
8a6ff07f GB |
186 | public ITmfStateSystem getStateSystem() { |
187 | return fStateSystem; | |
188 | } | |
189 | ||
09ec275e AM |
190 | /** |
191 | * Block the calling thread until the analysis module has been initialized. | |
192 | * After this method returns, {@link #getStateSystem()} should not return | |
193 | * null anymore. | |
194 | */ | |
195 | public void waitForInitialization() { | |
196 | try { | |
197 | fInitialized.await(); | |
198 | } catch (InterruptedException e) {} | |
199 | } | |
200 | ||
baa96b1d BH |
201 | // ------------------------------------------------------------------------ |
202 | // TmfAbstractAnalysisModule | |
203 | // ------------------------------------------------------------------------ | |
8a6ff07f | 204 | |
baa96b1d BH |
205 | @Override |
206 | protected boolean executeAnalysis(@Nullable final IProgressMonitor monitor) { | |
207 | IProgressMonitor mon = (monitor == null ? new NullProgressMonitor() : monitor); | |
208 | final ITmfStateProvider provider = createStateProvider(); | |
8a6ff07f | 209 | |
84a9548a | 210 | String id = getId(); |
84a9548a | 211 | |
8a6ff07f GB |
212 | /* FIXME: State systems should make use of the monitor, to be cancelled */ |
213 | try { | |
214 | /* Get the state system according to backend */ | |
215 | StateSystemBackendType backend = getBackendType(); | |
216 | String directory; | |
baa96b1d | 217 | File htFile; |
e1c415b3 BH |
218 | |
219 | ITmfTrace trace = getTrace(); | |
220 | if (trace == null) { | |
221 | // Analysis was cancelled in the meantime | |
222 | fInitialized.countDown(); | |
223 | return false; | |
224 | } | |
8a6ff07f GB |
225 | switch (backend) { |
226 | case FULL: | |
e1c415b3 | 227 | directory = TmfTraceManager.getSupplementaryFileDir(trace); |
baa96b1d | 228 | htFile = new File(directory + getSsFileName()); |
84a9548a | 229 | createFullHistory(id, provider, htFile); |
8a6ff07f GB |
230 | break; |
231 | case PARTIAL: | |
e1c415b3 | 232 | directory = TmfTraceManager.getSupplementaryFileDir(trace); |
baa96b1d | 233 | htFile = new File(directory + getSsFileName()); |
84a9548a | 234 | createPartialHistory(id, provider, htFile); |
8a6ff07f GB |
235 | break; |
236 | case INMEM: | |
84a9548a | 237 | createInMemoryHistory(id, provider); |
8a6ff07f GB |
238 | break; |
239 | case NULL: | |
84a9548a | 240 | createNullHistory(id, provider); |
8a6ff07f GB |
241 | break; |
242 | default: | |
243 | break; | |
244 | } | |
245 | } catch (TmfTraceException e) { | |
e1c415b3 | 246 | fInitialized.countDown(); |
8a6ff07f GB |
247 | return false; |
248 | } | |
baa96b1d | 249 | return !mon.isCanceled(); |
8a6ff07f GB |
250 | } |
251 | ||
252 | @Override | |
253 | protected void canceling() { | |
baa96b1d BH |
254 | ITmfEventRequest req = fRequest; |
255 | if ((req != null) && (!req.isCompleted())) { | |
256 | req.cancel(); | |
257 | } | |
258 | } | |
259 | ||
a1529f38 AM |
260 | @Override |
261 | public void dispose() { | |
130e6f4e | 262 | super.dispose(); |
a1529f38 AM |
263 | if (fStateSystem != null) { |
264 | fStateSystem.dispose(); | |
265 | } | |
a1529f38 AM |
266 | } |
267 | ||
baa96b1d BH |
268 | // ------------------------------------------------------------------------ |
269 | // History creation methods | |
270 | // ------------------------------------------------------------------------ | |
271 | ||
272 | /* | |
273 | * Load the history file matching the target trace. If the file already | |
274 | * exists, it will be opened directly. If not, it will be created from | |
275 | * scratch. | |
276 | */ | |
84a9548a | 277 | private void createFullHistory(String id, ITmfStateProvider provider, File htFile) throws TmfTraceException { |
baa96b1d BH |
278 | |
279 | /* If the target file already exists, do not rebuild it uselessly */ | |
280 | // TODO for now we assume it's complete. Might be a good idea to check | |
281 | // at least if its range matches the trace's range. | |
282 | ||
283 | if (htFile.exists()) { | |
284 | /* Load an existing history */ | |
285 | final int version = provider.getVersion(); | |
286 | try { | |
84a9548a AM |
287 | IStateHistoryBackend backend = new HistoryTreeBackend(htFile, version); |
288 | fHtBackend = backend; | |
bcec0116 | 289 | fStateSystem = StateSystemFactory.newStateSystem(id, backend, false); |
09ec275e | 290 | fInitialized.countDown(); |
baa96b1d BH |
291 | return; |
292 | } catch (IOException e) { | |
293 | /* | |
294 | * There was an error opening the existing file. Perhaps it was | |
295 | * corrupted, perhaps it's an old version? We'll just | |
296 | * fall-through and try to build a new one from scratch instead. | |
297 | */ | |
298 | } | |
299 | } | |
300 | ||
301 | /* Size of the blocking queue to use when building a state history */ | |
302 | final int QUEUE_SIZE = 10000; | |
303 | ||
304 | try { | |
84a9548a | 305 | IStateHistoryBackend backend = new ThreadedHistoryTreeBackend(htFile, |
baa96b1d | 306 | provider.getStartTime(), provider.getVersion(), QUEUE_SIZE); |
84a9548a | 307 | fHtBackend = backend; |
bcec0116 | 308 | fStateSystem = StateSystemFactory.newStateSystem(id, backend); |
baa96b1d BH |
309 | provider.assignTargetStateSystem(fStateSystem); |
310 | build(provider); | |
311 | } catch (IOException e) { | |
312 | /* | |
313 | * If it fails here however, it means there was a problem writing to | |
314 | * the disk, so throw a real exception this time. | |
315 | */ | |
316 | throw new TmfTraceException(e.toString(), e); | |
317 | } | |
318 | } | |
319 | ||
320 | /* | |
321 | * Create a new state system backed with a partial history. A partial | |
322 | * history is similar to a "full" one (which you get with | |
323 | * {@link #newFullHistory}), except that the file on disk is much smaller, | |
324 | * but queries are a bit slower. | |
325 | * | |
326 | * Also note that single-queries are implemented using a full-query | |
327 | * underneath, (which are much slower), so this might not be a good fit for | |
328 | * a use case where you have to do lots of single queries. | |
329 | */ | |
84a9548a | 330 | private void createPartialHistory(String id, ITmfStateProvider provider, File htPartialFile) |
baa96b1d BH |
331 | throws TmfTraceException { |
332 | /* | |
333 | * The order of initializations is very tricky (but very important!) | |
334 | * here. We need to follow this pattern: | |
335 | * (1 is done before the call to this method) | |
336 | * | |
337 | * 1- Instantiate realStateProvider | |
338 | * 2- Instantiate realBackend | |
339 | * 3- Instantiate partialBackend, with prereqs: | |
340 | * 3a- Instantiate partialProvider, via realProvider.getNew() | |
341 | * 3b- Instantiate nullBackend (partialSS's backend) | |
342 | * 3c- Instantiate partialSS | |
343 | * 3d- partialProvider.assignSS(partialSS) | |
344 | * 4- Instantiate realSS | |
345 | * 5- partialSS.assignUpstream(realSS) | |
346 | * 6- realProvider.assignSS(realSS) | |
347 | * 7- Call HistoryBuilder(realProvider, realSS, partialBackend) to build the thing. | |
348 | */ | |
349 | ||
350 | /* Size of the blocking queue to use when building a state history */ | |
351 | final int QUEUE_SIZE = 10000; | |
352 | ||
353 | final long granularity = 50000; | |
354 | ||
355 | /* 2 */ | |
356 | IStateHistoryBackend realBackend = null; | |
357 | try { | |
358 | realBackend = new ThreadedHistoryTreeBackend(htPartialFile, | |
359 | provider.getStartTime(), provider.getVersion(), QUEUE_SIZE); | |
360 | } catch (IOException e) { | |
361 | throw new TmfTraceException(e.toString(), e); | |
362 | } | |
363 | ||
364 | /* 3a */ | |
365 | ITmfStateProvider partialProvider = provider.getNewInstance(); | |
366 | ||
367 | /* 3b-3c, constructor automatically uses a NullBackend */ | |
368 | PartialStateSystem pss = new PartialStateSystem(); | |
369 | ||
370 | /* 3d */ | |
371 | partialProvider.assignTargetStateSystem(pss); | |
372 | ||
373 | /* 3 */ | |
374 | IStateHistoryBackend partialBackend = | |
375 | new PartialHistoryBackend(partialProvider, pss, realBackend, granularity); | |
376 | ||
377 | /* 4 */ | |
bcec0116 | 378 | @SuppressWarnings("restriction") |
e894a508 AM |
379 | org.eclipse.tracecompass.internal.statesystem.core.StateSystem realSS = |
380 | (org.eclipse.tracecompass.internal.statesystem.core.StateSystem) StateSystemFactory.newStateSystem(id, partialBackend); | |
baa96b1d BH |
381 | |
382 | /* 5 */ | |
383 | pss.assignUpstream(realSS); | |
384 | ||
385 | /* 6 */ | |
386 | provider.assignTargetStateSystem(realSS); | |
387 | ||
388 | /* 7 */ | |
389 | fHtBackend = partialBackend; | |
390 | fStateSystem = realSS; | |
391 | ||
392 | build(provider); | |
393 | } | |
394 | ||
395 | /* | |
396 | * Create a new state system using a null history back-end. This means that | |
397 | * no history intervals will be saved anywhere, and as such only | |
398 | * {@link ITmfStateSystem#queryOngoingState} will be available. | |
399 | */ | |
84a9548a AM |
400 | private void createNullHistory(String id, ITmfStateProvider provider) { |
401 | IStateHistoryBackend backend = new NullBackend(); | |
402 | fHtBackend = backend; | |
bcec0116 | 403 | fStateSystem = StateSystemFactory.newStateSystem(id, backend); |
baa96b1d BH |
404 | provider.assignTargetStateSystem(fStateSystem); |
405 | build(provider); | |
406 | } | |
407 | ||
408 | /* | |
409 | * Create a new state system using in-memory interval storage. This should | |
410 | * only be done for very small state system, and will be naturally limited | |
411 | * to 2^31 intervals. | |
412 | */ | |
84a9548a AM |
413 | private void createInMemoryHistory(String id, ITmfStateProvider provider) { |
414 | IStateHistoryBackend backend = new InMemoryBackend(provider.getStartTime()); | |
415 | fHtBackend = backend; | |
bcec0116 | 416 | fStateSystem = StateSystemFactory.newStateSystem(id, backend); |
baa96b1d BH |
417 | provider.assignTargetStateSystem(fStateSystem); |
418 | build(provider); | |
419 | } | |
420 | ||
a1529f38 | 421 | private void disposeProvider(boolean deleteFiles) { |
baa96b1d BH |
422 | ITmfStateProvider provider = fStateProvider; |
423 | if (provider != null) { | |
424 | provider.dispose(); | |
425 | } | |
426 | if (deleteFiles && (fHtBackend != null)) { | |
427 | fHtBackend.removeFiles(); | |
428 | } | |
429 | } | |
430 | ||
431 | private void build(ITmfStateProvider provider) { | |
432 | if ((fStateSystem == null) || (fHtBackend == null)) { | |
433 | throw new IllegalArgumentException(); | |
434 | } | |
435 | ||
436 | ITmfEventRequest request = fRequest; | |
437 | if ((request != null) && (!request.isCompleted())) { | |
438 | request.cancel(); | |
439 | } | |
440 | ||
de83d1ab MAL |
441 | fTimeRange = TmfTimeRange.ETERNITY; |
442 | final ITmfTrace trace = provider.getTrace(); | |
d0c7e4ba | 443 | if (!isCompleteTrace(trace)) { |
de83d1ab MAL |
444 | TmfTimeRange traceTimeRange = trace.getTimeRange(); |
445 | if (traceTimeRange != null) { | |
446 | fTimeRange = traceTimeRange; | |
447 | } | |
448 | } | |
baa96b1d | 449 | |
baa96b1d | 450 | fStateProvider = provider; |
de83d1ab MAL |
451 | synchronized (fRequestSyncObj) { |
452 | startRequest(); | |
453 | } | |
baa96b1d | 454 | |
09ec275e AM |
455 | /* |
456 | * The state system object is now created, we can consider this module | |
457 | * "initialized" (components can retrieve it and start doing queries). | |
458 | */ | |
459 | fInitialized.countDown(); | |
460 | ||
461 | /* | |
462 | * Block the executeAnalysis() construction is complete (so that the | |
463 | * progress monitor displays that it is running). | |
464 | */ | |
baa96b1d | 465 | try { |
de83d1ab MAL |
466 | if (fRequest != null) { |
467 | fRequest.waitForCompletion(); | |
468 | } | |
baa96b1d BH |
469 | } catch (InterruptedException e) { |
470 | e.printStackTrace(); | |
471 | } | |
472 | } | |
473 | ||
474 | private class StateSystemEventRequest extends TmfEventRequest { | |
475 | private final ITmfStateProvider sci; | |
476 | private final ITmfTrace trace; | |
477 | ||
de83d1ab | 478 | public StateSystemEventRequest(ITmfStateProvider sp, TmfTimeRange timeRange, int index) { |
baa96b1d | 479 | super(sp.getExpectedEventType(), |
de83d1ab MAL |
480 | timeRange, |
481 | index, | |
baa96b1d BH |
482 | ITmfEventRequest.ALL_DATA, |
483 | ITmfEventRequest.ExecutionType.BACKGROUND); | |
484 | this.sci = sp; | |
485 | ||
486 | // sci.getTrace() will eventually return a @NonNull | |
5db5a3a4 | 487 | trace = checkNotNull(sci.getTrace()); |
baa96b1d | 488 | |
baa96b1d BH |
489 | } |
490 | ||
491 | @Override | |
41f3b36b | 492 | public void handleData(final ITmfEvent event) { |
baa96b1d | 493 | super.handleData(event); |
41f3b36b | 494 | if (event.getTrace() == trace) { |
baa96b1d | 495 | sci.processEvent(event); |
2d208fb7 GB |
496 | } else if (trace instanceof TmfExperiment) { |
497 | /* | |
498 | * If the request is for an experiment, check if the event is | |
499 | * from one of the child trace | |
500 | */ | |
501 | for (ITmfTrace childTrace : ((TmfExperiment) trace).getTraces()) { | |
502 | if (childTrace == event.getTrace()) { | |
503 | sci.processEvent(event); | |
504 | } | |
505 | } | |
baa96b1d BH |
506 | } |
507 | } | |
508 | ||
509 | @Override | |
510 | public void handleSuccess() { | |
511 | super.handleSuccess(); | |
de83d1ab MAL |
512 | if (isCompleteTrace(trace)) { |
513 | disposeProvider(false); | |
514 | } else { | |
515 | fNbRead += getNbRead(); | |
516 | synchronized (fRequestSyncObj) { | |
517 | final TmfTimeRange timeRange = fTimeRange; | |
518 | if (timeRange != null) { | |
519 | if (getRange().getEndTime().getValue() < timeRange.getEndTime().getValue()) { | |
520 | startRequest(); | |
521 | } | |
522 | } | |
523 | } | |
524 | } | |
baa96b1d BH |
525 | } |
526 | ||
527 | @Override | |
528 | public void handleCancel() { | |
529 | super.handleCancel(); | |
de83d1ab MAL |
530 | if (isCompleteTrace(trace)) { |
531 | disposeProvider(true); | |
532 | } | |
baa96b1d BH |
533 | } |
534 | ||
535 | @Override | |
536 | public void handleFailure() { | |
537 | super.handleFailure(); | |
a1529f38 | 538 | disposeProvider(true); |
baa96b1d | 539 | } |
8a6ff07f GB |
540 | } |
541 | ||
5237a931 AM |
542 | // ------------------------------------------------------------------------ |
543 | // ITmfAnalysisModuleWithStateSystems | |
544 | // ------------------------------------------------------------------------ | |
545 | ||
546 | @Override | |
baa96b1d BH |
547 | @Nullable |
548 | public ITmfStateSystem getStateSystem(String id) { | |
5237a931 AM |
549 | if (id.equals(getId())) { |
550 | return fStateSystem; | |
551 | } | |
552 | return null; | |
553 | } | |
554 | ||
8a6ff07f | 555 | @Override |
5237a931 | 556 | public Iterable<ITmfStateSystem> getStateSystems() { |
5db5a3a4 | 557 | return checkNotNull(Collections.<ITmfStateSystem> singleton(fStateSystem)); |
8a6ff07f | 558 | } |
de83d1ab MAL |
559 | |
560 | /** | |
561 | * Signal handler for the TmfTraceRangeUpdatedSignal signal | |
562 | * | |
563 | * @param signal The incoming signal | |
564 | */ | |
565 | @TmfSignalHandler | |
566 | public void traceRangeUpdated(final TmfTraceRangeUpdatedSignal signal) { | |
567 | fTimeRange = signal.getRange(); | |
568 | ITmfStateProvider stateProvider = fStateProvider; | |
569 | synchronized (fRequestSyncObj) { | |
570 | if (signal.getTrace() == getTrace() && stateProvider != null && stateProvider.getAssignedStateSystem() != null) { | |
571 | ITmfEventRequest request = fRequest; | |
572 | if ((request == null) || request.isCompleted()) { | |
573 | startRequest(); | |
574 | } | |
575 | } | |
576 | } | |
577 | } | |
578 | ||
579 | private void startRequest() { | |
580 | ITmfStateProvider stateProvider = fStateProvider; | |
581 | TmfTimeRange timeRange = fTimeRange; | |
582 | if (stateProvider == null || timeRange == null) { | |
583 | return; | |
584 | } | |
585 | ITmfEventRequest request = new StateSystemEventRequest(stateProvider, timeRange, fNbRead); | |
586 | stateProvider.getTrace().sendRequest(request); | |
587 | fRequest = request; | |
588 | } | |
589 | ||
590 | private static boolean isCompleteTrace(ITmfTrace trace) { | |
591 | return !(trace instanceof ITmfTraceCompleteness) || ((ITmfTraceCompleteness) trace).isComplete(); | |
592 | } | |
8a6ff07f | 593 | } |