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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 | ||
8a6ff07f GB |
122 | /** |
123 | * Get the state provider for this analysis module | |
124 | * | |
125 | * @return the state provider | |
126 | */ | |
8a6ff07f GB |
127 | protected abstract ITmfStateProvider createStateProvider(); |
128 | ||
129 | /** | |
130 | * Get the state system backend type used by this module | |
131 | * | |
132 | * @return The {@link StateSystemBackendType} | |
133 | */ | |
a3b864c0 AM |
134 | protected StateSystemBackendType getBackendType() { |
135 | /* Using full history by default, sub-classes can override */ | |
136 | return StateSystemBackendType.FULL; | |
137 | } | |
8a6ff07f GB |
138 | |
139 | /** | |
140 | * Get the supplementary file name where to save this state system. The | |
141 | * default is the ID of the analysis followed by the extension. | |
142 | * | |
143 | * @return The supplementary file name | |
144 | */ | |
145 | protected String getSsFileName() { | |
146 | return getId() + EXTENSION; | |
147 | } | |
148 | ||
149 | /** | |
baa96b1d BH |
150 | * Get the state system generated by this analysis, or null if it is not yet |
151 | * created. | |
8a6ff07f GB |
152 | * |
153 | * @return The state system | |
154 | */ | |
baa96b1d | 155 | @Nullable |
8a6ff07f GB |
156 | public ITmfStateSystem getStateSystem() { |
157 | return fStateSystem; | |
158 | } | |
159 | ||
09ec275e AM |
160 | /** |
161 | * Block the calling thread until the analysis module has been initialized. | |
162 | * After this method returns, {@link #getStateSystem()} should not return | |
163 | * null anymore. | |
164 | */ | |
165 | public void waitForInitialization() { | |
166 | try { | |
167 | fInitialized.await(); | |
168 | } catch (InterruptedException e) {} | |
169 | } | |
170 | ||
baa96b1d BH |
171 | // ------------------------------------------------------------------------ |
172 | // TmfAbstractAnalysisModule | |
173 | // ------------------------------------------------------------------------ | |
8a6ff07f | 174 | |
baa96b1d BH |
175 | @Override |
176 | protected boolean executeAnalysis(@Nullable final IProgressMonitor monitor) { | |
177 | IProgressMonitor mon = (monitor == null ? new NullProgressMonitor() : monitor); | |
178 | final ITmfStateProvider provider = createStateProvider(); | |
8a6ff07f | 179 | |
84a9548a | 180 | String id = getId(); |
84a9548a | 181 | |
8a6ff07f GB |
182 | /* FIXME: State systems should make use of the monitor, to be cancelled */ |
183 | try { | |
184 | /* Get the state system according to backend */ | |
185 | StateSystemBackendType backend = getBackendType(); | |
186 | String directory; | |
baa96b1d | 187 | File htFile; |
e1c415b3 BH |
188 | |
189 | ITmfTrace trace = getTrace(); | |
190 | if (trace == null) { | |
191 | // Analysis was cancelled in the meantime | |
192 | fInitialized.countDown(); | |
193 | return false; | |
194 | } | |
8a6ff07f GB |
195 | switch (backend) { |
196 | case FULL: | |
e1c415b3 | 197 | directory = TmfTraceManager.getSupplementaryFileDir(trace); |
baa96b1d | 198 | htFile = new File(directory + getSsFileName()); |
84a9548a | 199 | createFullHistory(id, provider, htFile); |
8a6ff07f GB |
200 | break; |
201 | case PARTIAL: | |
e1c415b3 | 202 | directory = TmfTraceManager.getSupplementaryFileDir(trace); |
baa96b1d | 203 | htFile = new File(directory + getSsFileName()); |
84a9548a | 204 | createPartialHistory(id, provider, htFile); |
8a6ff07f GB |
205 | break; |
206 | case INMEM: | |
84a9548a | 207 | createInMemoryHistory(id, provider); |
8a6ff07f GB |
208 | break; |
209 | case NULL: | |
84a9548a | 210 | createNullHistory(id, provider); |
8a6ff07f GB |
211 | break; |
212 | default: | |
213 | break; | |
214 | } | |
215 | } catch (TmfTraceException e) { | |
e1c415b3 | 216 | fInitialized.countDown(); |
8a6ff07f GB |
217 | return false; |
218 | } | |
baa96b1d | 219 | return !mon.isCanceled(); |
8a6ff07f GB |
220 | } |
221 | ||
222 | @Override | |
223 | protected void canceling() { | |
baa96b1d BH |
224 | ITmfEventRequest req = fRequest; |
225 | if ((req != null) && (!req.isCompleted())) { | |
226 | req.cancel(); | |
227 | } | |
228 | } | |
229 | ||
a1529f38 AM |
230 | @Override |
231 | public void dispose() { | |
130e6f4e | 232 | super.dispose(); |
a1529f38 AM |
233 | if (fStateSystem != null) { |
234 | fStateSystem.dispose(); | |
235 | } | |
a1529f38 AM |
236 | } |
237 | ||
baa96b1d BH |
238 | // ------------------------------------------------------------------------ |
239 | // History creation methods | |
240 | // ------------------------------------------------------------------------ | |
241 | ||
242 | /* | |
243 | * Load the history file matching the target trace. If the file already | |
244 | * exists, it will be opened directly. If not, it will be created from | |
245 | * scratch. | |
246 | */ | |
84a9548a | 247 | private void createFullHistory(String id, ITmfStateProvider provider, File htFile) throws TmfTraceException { |
baa96b1d BH |
248 | |
249 | /* If the target file already exists, do not rebuild it uselessly */ | |
250 | // TODO for now we assume it's complete. Might be a good idea to check | |
251 | // at least if its range matches the trace's range. | |
252 | ||
253 | if (htFile.exists()) { | |
254 | /* Load an existing history */ | |
255 | final int version = provider.getVersion(); | |
256 | try { | |
84a9548a AM |
257 | IStateHistoryBackend backend = new HistoryTreeBackend(htFile, version); |
258 | fHtBackend = backend; | |
bcec0116 | 259 | fStateSystem = StateSystemFactory.newStateSystem(id, backend, false); |
09ec275e | 260 | fInitialized.countDown(); |
baa96b1d BH |
261 | return; |
262 | } catch (IOException e) { | |
263 | /* | |
264 | * There was an error opening the existing file. Perhaps it was | |
265 | * corrupted, perhaps it's an old version? We'll just | |
266 | * fall-through and try to build a new one from scratch instead. | |
267 | */ | |
268 | } | |
269 | } | |
270 | ||
271 | /* Size of the blocking queue to use when building a state history */ | |
272 | final int QUEUE_SIZE = 10000; | |
273 | ||
274 | try { | |
84a9548a | 275 | IStateHistoryBackend backend = new ThreadedHistoryTreeBackend(htFile, |
baa96b1d | 276 | provider.getStartTime(), provider.getVersion(), QUEUE_SIZE); |
84a9548a | 277 | fHtBackend = backend; |
bcec0116 | 278 | fStateSystem = StateSystemFactory.newStateSystem(id, backend); |
baa96b1d BH |
279 | provider.assignTargetStateSystem(fStateSystem); |
280 | build(provider); | |
281 | } catch (IOException e) { | |
282 | /* | |
283 | * If it fails here however, it means there was a problem writing to | |
284 | * the disk, so throw a real exception this time. | |
285 | */ | |
286 | throw new TmfTraceException(e.toString(), e); | |
287 | } | |
288 | } | |
289 | ||
290 | /* | |
291 | * Create a new state system backed with a partial history. A partial | |
292 | * history is similar to a "full" one (which you get with | |
293 | * {@link #newFullHistory}), except that the file on disk is much smaller, | |
294 | * but queries are a bit slower. | |
295 | * | |
296 | * Also note that single-queries are implemented using a full-query | |
297 | * underneath, (which are much slower), so this might not be a good fit for | |
298 | * a use case where you have to do lots of single queries. | |
299 | */ | |
84a9548a | 300 | private void createPartialHistory(String id, ITmfStateProvider provider, File htPartialFile) |
baa96b1d BH |
301 | throws TmfTraceException { |
302 | /* | |
303 | * The order of initializations is very tricky (but very important!) | |
304 | * here. We need to follow this pattern: | |
305 | * (1 is done before the call to this method) | |
306 | * | |
307 | * 1- Instantiate realStateProvider | |
308 | * 2- Instantiate realBackend | |
309 | * 3- Instantiate partialBackend, with prereqs: | |
310 | * 3a- Instantiate partialProvider, via realProvider.getNew() | |
311 | * 3b- Instantiate nullBackend (partialSS's backend) | |
312 | * 3c- Instantiate partialSS | |
313 | * 3d- partialProvider.assignSS(partialSS) | |
314 | * 4- Instantiate realSS | |
315 | * 5- partialSS.assignUpstream(realSS) | |
316 | * 6- realProvider.assignSS(realSS) | |
317 | * 7- Call HistoryBuilder(realProvider, realSS, partialBackend) to build the thing. | |
318 | */ | |
319 | ||
320 | /* Size of the blocking queue to use when building a state history */ | |
321 | final int QUEUE_SIZE = 10000; | |
322 | ||
323 | final long granularity = 50000; | |
324 | ||
325 | /* 2 */ | |
326 | IStateHistoryBackend realBackend = null; | |
327 | try { | |
328 | realBackend = new ThreadedHistoryTreeBackend(htPartialFile, | |
329 | provider.getStartTime(), provider.getVersion(), QUEUE_SIZE); | |
330 | } catch (IOException e) { | |
331 | throw new TmfTraceException(e.toString(), e); | |
332 | } | |
333 | ||
334 | /* 3a */ | |
335 | ITmfStateProvider partialProvider = provider.getNewInstance(); | |
336 | ||
337 | /* 3b-3c, constructor automatically uses a NullBackend */ | |
338 | PartialStateSystem pss = new PartialStateSystem(); | |
339 | ||
340 | /* 3d */ | |
341 | partialProvider.assignTargetStateSystem(pss); | |
342 | ||
343 | /* 3 */ | |
344 | IStateHistoryBackend partialBackend = | |
345 | new PartialHistoryBackend(partialProvider, pss, realBackend, granularity); | |
346 | ||
347 | /* 4 */ | |
bcec0116 | 348 | @SuppressWarnings("restriction") |
e894a508 AM |
349 | org.eclipse.tracecompass.internal.statesystem.core.StateSystem realSS = |
350 | (org.eclipse.tracecompass.internal.statesystem.core.StateSystem) StateSystemFactory.newStateSystem(id, partialBackend); | |
baa96b1d BH |
351 | |
352 | /* 5 */ | |
353 | pss.assignUpstream(realSS); | |
354 | ||
355 | /* 6 */ | |
356 | provider.assignTargetStateSystem(realSS); | |
357 | ||
358 | /* 7 */ | |
359 | fHtBackend = partialBackend; | |
360 | fStateSystem = realSS; | |
361 | ||
362 | build(provider); | |
363 | } | |
364 | ||
365 | /* | |
366 | * Create a new state system using a null history back-end. This means that | |
367 | * no history intervals will be saved anywhere, and as such only | |
368 | * {@link ITmfStateSystem#queryOngoingState} will be available. | |
369 | */ | |
84a9548a AM |
370 | private void createNullHistory(String id, ITmfStateProvider provider) { |
371 | IStateHistoryBackend backend = new NullBackend(); | |
372 | fHtBackend = backend; | |
bcec0116 | 373 | fStateSystem = StateSystemFactory.newStateSystem(id, backend); |
baa96b1d BH |
374 | provider.assignTargetStateSystem(fStateSystem); |
375 | build(provider); | |
376 | } | |
377 | ||
378 | /* | |
379 | * Create a new state system using in-memory interval storage. This should | |
380 | * only be done for very small state system, and will be naturally limited | |
381 | * to 2^31 intervals. | |
382 | */ | |
84a9548a AM |
383 | private void createInMemoryHistory(String id, ITmfStateProvider provider) { |
384 | IStateHistoryBackend backend = new InMemoryBackend(provider.getStartTime()); | |
385 | fHtBackend = backend; | |
bcec0116 | 386 | fStateSystem = StateSystemFactory.newStateSystem(id, backend); |
baa96b1d BH |
387 | provider.assignTargetStateSystem(fStateSystem); |
388 | build(provider); | |
389 | } | |
390 | ||
a1529f38 | 391 | private void disposeProvider(boolean deleteFiles) { |
baa96b1d BH |
392 | ITmfStateProvider provider = fStateProvider; |
393 | if (provider != null) { | |
394 | provider.dispose(); | |
395 | } | |
396 | if (deleteFiles && (fHtBackend != null)) { | |
397 | fHtBackend.removeFiles(); | |
398 | } | |
399 | } | |
400 | ||
401 | private void build(ITmfStateProvider provider) { | |
402 | if ((fStateSystem == null) || (fHtBackend == null)) { | |
403 | throw new IllegalArgumentException(); | |
404 | } | |
405 | ||
406 | ITmfEventRequest request = fRequest; | |
407 | if ((request != null) && (!request.isCompleted())) { | |
408 | request.cancel(); | |
409 | } | |
410 | ||
de83d1ab MAL |
411 | fTimeRange = TmfTimeRange.ETERNITY; |
412 | final ITmfTrace trace = provider.getTrace(); | |
d0c7e4ba | 413 | if (!isCompleteTrace(trace)) { |
de83d1ab MAL |
414 | TmfTimeRange traceTimeRange = trace.getTimeRange(); |
415 | if (traceTimeRange != null) { | |
416 | fTimeRange = traceTimeRange; | |
417 | } | |
418 | } | |
baa96b1d | 419 | |
baa96b1d | 420 | fStateProvider = provider; |
de83d1ab MAL |
421 | synchronized (fRequestSyncObj) { |
422 | startRequest(); | |
423 | } | |
baa96b1d | 424 | |
09ec275e AM |
425 | /* |
426 | * The state system object is now created, we can consider this module | |
427 | * "initialized" (components can retrieve it and start doing queries). | |
428 | */ | |
429 | fInitialized.countDown(); | |
430 | ||
431 | /* | |
432 | * Block the executeAnalysis() construction is complete (so that the | |
433 | * progress monitor displays that it is running). | |
434 | */ | |
baa96b1d | 435 | try { |
de83d1ab MAL |
436 | if (fRequest != null) { |
437 | fRequest.waitForCompletion(); | |
438 | } | |
baa96b1d BH |
439 | } catch (InterruptedException e) { |
440 | e.printStackTrace(); | |
441 | } | |
442 | } | |
443 | ||
444 | private class StateSystemEventRequest extends TmfEventRequest { | |
445 | private final ITmfStateProvider sci; | |
446 | private final ITmfTrace trace; | |
447 | ||
de83d1ab | 448 | public StateSystemEventRequest(ITmfStateProvider sp, TmfTimeRange timeRange, int index) { |
e2bcc8a5 | 449 | super(ITmfEvent.class, |
de83d1ab MAL |
450 | timeRange, |
451 | index, | |
baa96b1d BH |
452 | ITmfEventRequest.ALL_DATA, |
453 | ITmfEventRequest.ExecutionType.BACKGROUND); | |
454 | this.sci = sp; | |
455 | ||
456 | // sci.getTrace() will eventually return a @NonNull | |
5db5a3a4 | 457 | trace = checkNotNull(sci.getTrace()); |
baa96b1d | 458 | |
baa96b1d BH |
459 | } |
460 | ||
461 | @Override | |
41f3b36b | 462 | public void handleData(final ITmfEvent event) { |
baa96b1d | 463 | super.handleData(event); |
41f3b36b | 464 | if (event.getTrace() == trace) { |
baa96b1d | 465 | sci.processEvent(event); |
2d208fb7 GB |
466 | } else if (trace instanceof TmfExperiment) { |
467 | /* | |
468 | * If the request is for an experiment, check if the event is | |
469 | * from one of the child trace | |
470 | */ | |
471 | for (ITmfTrace childTrace : ((TmfExperiment) trace).getTraces()) { | |
472 | if (childTrace == event.getTrace()) { | |
473 | sci.processEvent(event); | |
474 | } | |
475 | } | |
baa96b1d BH |
476 | } |
477 | } | |
478 | ||
479 | @Override | |
480 | public void handleSuccess() { | |
481 | super.handleSuccess(); | |
de83d1ab MAL |
482 | if (isCompleteTrace(trace)) { |
483 | disposeProvider(false); | |
484 | } else { | |
485 | fNbRead += getNbRead(); | |
486 | synchronized (fRequestSyncObj) { | |
487 | final TmfTimeRange timeRange = fTimeRange; | |
488 | if (timeRange != null) { | |
489 | if (getRange().getEndTime().getValue() < timeRange.getEndTime().getValue()) { | |
490 | startRequest(); | |
491 | } | |
492 | } | |
493 | } | |
494 | } | |
baa96b1d BH |
495 | } |
496 | ||
497 | @Override | |
498 | public void handleCancel() { | |
499 | super.handleCancel(); | |
de83d1ab MAL |
500 | if (isCompleteTrace(trace)) { |
501 | disposeProvider(true); | |
502 | } | |
baa96b1d BH |
503 | } |
504 | ||
505 | @Override | |
506 | public void handleFailure() { | |
507 | super.handleFailure(); | |
a1529f38 | 508 | disposeProvider(true); |
baa96b1d | 509 | } |
8a6ff07f GB |
510 | } |
511 | ||
5237a931 AM |
512 | // ------------------------------------------------------------------------ |
513 | // ITmfAnalysisModuleWithStateSystems | |
514 | // ------------------------------------------------------------------------ | |
515 | ||
516 | @Override | |
baa96b1d BH |
517 | @Nullable |
518 | public ITmfStateSystem getStateSystem(String id) { | |
5237a931 AM |
519 | if (id.equals(getId())) { |
520 | return fStateSystem; | |
521 | } | |
522 | return null; | |
523 | } | |
524 | ||
8a6ff07f | 525 | @Override |
5237a931 | 526 | public Iterable<ITmfStateSystem> getStateSystems() { |
5db5a3a4 | 527 | return checkNotNull(Collections.<ITmfStateSystem> singleton(fStateSystem)); |
8a6ff07f | 528 | } |
de83d1ab MAL |
529 | |
530 | /** | |
531 | * Signal handler for the TmfTraceRangeUpdatedSignal signal | |
532 | * | |
533 | * @param signal The incoming signal | |
534 | */ | |
535 | @TmfSignalHandler | |
536 | public void traceRangeUpdated(final TmfTraceRangeUpdatedSignal signal) { | |
537 | fTimeRange = signal.getRange(); | |
538 | ITmfStateProvider stateProvider = fStateProvider; | |
539 | synchronized (fRequestSyncObj) { | |
540 | if (signal.getTrace() == getTrace() && stateProvider != null && stateProvider.getAssignedStateSystem() != null) { | |
541 | ITmfEventRequest request = fRequest; | |
542 | if ((request == null) || request.isCompleted()) { | |
543 | startRequest(); | |
544 | } | |
545 | } | |
546 | } | |
547 | } | |
548 | ||
549 | private void startRequest() { | |
550 | ITmfStateProvider stateProvider = fStateProvider; | |
551 | TmfTimeRange timeRange = fTimeRange; | |
552 | if (stateProvider == null || timeRange == null) { | |
553 | return; | |
554 | } | |
555 | ITmfEventRequest request = new StateSystemEventRequest(stateProvider, timeRange, fNbRead); | |
556 | stateProvider.getTrace().sendRequest(request); | |
557 | fRequest = request; | |
558 | } | |
559 | ||
560 | private static boolean isCompleteTrace(ITmfTrace trace) { | |
561 | return !(trace instanceof ITmfTraceCompleteness) || ((ITmfTraceCompleteness) trace).isComplete(); | |
562 | } | |
8a6ff07f | 563 | } |