Commit | Line | Data |
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8c8bf09f | 1 | /******************************************************************************* |
ed902a2b | 2 | * Copyright (c) 2009, 2015 Ericsson |
0283f7ff | 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 | |
0283f7ff | 8 | * |
8c8bf09f | 9 | * Contributors: |
fd3f1eff AM |
10 | * Francois Chouinard - Initial API and implementation, replace background |
11 | * requests by preemptable requests | |
12 | * Alexandre Montplaisir - Merge with TmfDataProvider | |
8967c8c0 | 13 | * Bernd Hufmann - Add timer based coalescing for background requests |
8c8bf09f ASL |
14 | *******************************************************************************/ |
15 | ||
2bdf0193 | 16 | package org.eclipse.tracecompass.tmf.core.component; |
8c8bf09f | 17 | |
d77f31da BH |
18 | import java.util.ArrayList; |
19 | import java.util.Collections; | |
8967c8c0 | 20 | import java.util.Iterator; |
f45257df | 21 | import java.util.LinkedList; |
fd3f1eff | 22 | import java.util.List; |
8967c8c0 BH |
23 | import java.util.Timer; |
24 | import java.util.TimerTask; | |
fd3f1eff | 25 | |
6ae0ee68 | 26 | import org.eclipse.jdt.annotation.NonNull; |
5db5a3a4 | 27 | import org.eclipse.tracecompass.common.core.NonNullUtils; |
2bdf0193 AM |
28 | import org.eclipse.tracecompass.internal.tmf.core.TmfCoreTracer; |
29 | import org.eclipse.tracecompass.internal.tmf.core.component.TmfEventThread; | |
30 | import org.eclipse.tracecompass.internal.tmf.core.component.TmfProviderManager; | |
31 | import org.eclipse.tracecompass.internal.tmf.core.request.TmfCoalescedEventRequest; | |
32 | import org.eclipse.tracecompass.internal.tmf.core.request.TmfRequestExecutor; | |
33 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; | |
8a580390 | 34 | import org.eclipse.tracecompass.tmf.core.filter.ITmfFilter; |
2bdf0193 AM |
35 | import org.eclipse.tracecompass.tmf.core.request.ITmfEventRequest; |
36 | import org.eclipse.tracecompass.tmf.core.request.ITmfEventRequest.ExecutionType; | |
37 | import org.eclipse.tracecompass.tmf.core.signal.TmfEndSynchSignal; | |
38 | import org.eclipse.tracecompass.tmf.core.signal.TmfSignalHandler; | |
39 | import org.eclipse.tracecompass.tmf.core.signal.TmfStartSynchSignal; | |
40 | import org.eclipse.tracecompass.tmf.core.timestamp.ITmfTimestamp; | |
41 | import org.eclipse.tracecompass.tmf.core.trace.ITmfContext; | |
8c8bf09f ASL |
42 | |
43 | /** | |
fd3f1eff AM |
44 | * An abstract base class that implements ITmfEventProvider. |
45 | * <p> | |
46 | * This abstract class implements the housekeeping methods to register/ | |
47 | * de-register the event provider and to handle generically the event requests. | |
48 | * </p> | |
0283f7ff | 49 | * |
8fd82db5 | 50 | * @author Francois Chouinard |
8c8bf09f | 51 | */ |
8a580390 | 52 | public abstract class TmfEventProvider extends TmfComponent implements ITmfEventProvider, ITmfFilter { |
fd3f1eff AM |
53 | |
54 | // ------------------------------------------------------------------------ | |
55 | // Constants | |
56 | // ------------------------------------------------------------------------ | |
57 | ||
ae09c4ad | 58 | /** Default amount of events per request "chunk" */ |
fd3f1eff AM |
59 | public static final int DEFAULT_BLOCK_SIZE = 50000; |
60 | ||
8967c8c0 BH |
61 | /** Delay for coalescing background requests (in milli-seconds) */ |
62 | private static final long DELAY = 1000; | |
63 | ||
fd3f1eff AM |
64 | // ------------------------------------------------------------------------ |
65 | // Attributes | |
66 | // ------------------------------------------------------------------------ | |
67 | ||
f45257df AM |
68 | /** List of coalesced requests */ |
69 | private final List<TmfCoalescedEventRequest> fPendingCoalescedRequests = new LinkedList<>(); | |
fd3f1eff | 70 | |
f45257df AM |
71 | /** The type of event handled by this provider */ |
72 | private Class<? extends ITmfEvent> fType; | |
fd3f1eff AM |
73 | |
74 | private final TmfRequestExecutor fExecutor; | |
75 | ||
76 | private final Object fLock = new Object(); | |
77 | ||
78 | private int fSignalDepth = 0; | |
79 | ||
80 | private int fRequestPendingCounter = 0; | |
8c8bf09f | 81 | |
506219d0 | 82 | private Timer fTimer; |
8967c8c0 | 83 | |
6ae0ee68 BH |
84 | /** Current timer task */ |
85 | @NonNull private TimerTask fCurrentTask = new TimerTask() { @Override public void run() {} }; | |
86 | ||
2b5c3b7e | 87 | private boolean fIsTimerEnabled; |
8967c8c0 | 88 | |
d77f31da BH |
89 | /** |
90 | * The parent event provider. | |
91 | */ | |
92 | private TmfEventProvider fParent = null; | |
93 | /** | |
94 | * The list if children event provider. | |
95 | */ | |
96 | private final List<TmfEventProvider> fChildren = Collections.synchronizedList(new ArrayList<TmfEventProvider>()); | |
97 | ||
00641a97 FC |
98 | // ------------------------------------------------------------------------ |
99 | // Constructors | |
100 | // ------------------------------------------------------------------------ | |
101 | ||
063f0d27 AM |
102 | /** |
103 | * Default constructor | |
104 | */ | |
12c155f5 | 105 | public TmfEventProvider() { |
00641a97 | 106 | super(); |
2b5c3b7e | 107 | setTimerEnabled(true); |
fd3f1eff | 108 | fExecutor = new TmfRequestExecutor(); |
12c155f5 | 109 | } |
8c8bf09f | 110 | |
063f0d27 | 111 | /** |
f45257df | 112 | * Standard constructor. Instantiate and initialize at the same time. |
063f0d27 AM |
113 | * |
114 | * @param name | |
fd3f1eff | 115 | * Name of the provider |
063f0d27 | 116 | * @param type |
fd3f1eff | 117 | * The type of events that will be handled |
063f0d27 | 118 | */ |
f45257df | 119 | public TmfEventProvider(String name, Class<? extends ITmfEvent> type) { |
fd3f1eff | 120 | this(); |
fd3f1eff | 121 | init(name, type); |
12c155f5 FC |
122 | } |
123 | ||
063f0d27 | 124 | /** |
f45257df | 125 | * Initialize this data provider |
fd3f1eff AM |
126 | * |
127 | * @param name | |
128 | * Name of the provider | |
129 | * @param type | |
130 | * The type of events that will be handled | |
131 | */ | |
f45257df AM |
132 | public void init(String name, Class<? extends ITmfEvent> type) { |
133 | super.init(name); | |
134 | fType = type; | |
135 | fExecutor.init(); | |
136 | ||
137 | fSignalDepth = 0; | |
506219d0 BH |
138 | |
139 | synchronized (fLock) { | |
140 | fTimer = new Timer(); | |
141 | } | |
142 | ||
f45257df | 143 | TmfProviderManager.register(fType, this); |
fd3f1eff AM |
144 | } |
145 | ||
146 | @Override | |
147 | public void dispose() { | |
148 | TmfProviderManager.deregister(fType, this); | |
149 | fExecutor.stop(); | |
506219d0 BH |
150 | synchronized (fLock) { |
151 | if (fTimer != null) { | |
152 | fTimer.cancel(); | |
153 | } | |
154 | fTimer = null; | |
155 | } | |
d77f31da BH |
156 | |
157 | synchronized (fChildren) { | |
158 | for (TmfEventProvider child : fChildren) { | |
159 | child.dispose(); | |
160 | } | |
161 | fChildren.clear(); | |
162 | } | |
2b5c3b7e | 163 | clearPendingRequests(); |
fd3f1eff | 164 | super.dispose(); |
12c155f5 FC |
165 | } |
166 | ||
00641a97 | 167 | // ------------------------------------------------------------------------ |
fd3f1eff AM |
168 | // Accessors |
169 | // ------------------------------------------------------------------------ | |
170 | ||
fd3f1eff AM |
171 | /** |
172 | * Get the event type this provider handles | |
173 | * | |
174 | * @return The type of ITmfEvent | |
175 | */ | |
0f89d4ba | 176 | public Class<? extends ITmfEvent> getType() { |
fd3f1eff AM |
177 | return fType; |
178 | } | |
179 | ||
180 | // ------------------------------------------------------------------------ | |
181 | // ITmfRequestHandler | |
00641a97 FC |
182 | // ------------------------------------------------------------------------ |
183 | ||
5419a136 | 184 | @Override |
fd3f1eff AM |
185 | public void sendRequest(final ITmfEventRequest request) { |
186 | synchronized (fLock) { | |
5a597798 GB |
187 | |
188 | if (TmfCoreTracer.isRequestTraced()) { | |
189 | TmfCoreTracer.traceRequest(request.getRequestId(), "SENT to provider " + getName()); //$NON-NLS-1$ | |
190 | } | |
191 | ||
8a580390 BH |
192 | if (request.getProviderFilter() == null) { |
193 | request.setProviderFilter(this); | |
6badfac0 BH |
194 | } |
195 | ||
6ae0ee68 BH |
196 | if (sendWithParent(request)) { |
197 | return; | |
198 | } | |
199 | ||
8967c8c0 BH |
200 | if (request.getExecType() == ExecutionType.FOREGROUND) { |
201 | if ((fSignalDepth > 0) || (fRequestPendingCounter > 0)) { | |
202 | coalesceEventRequest(request); | |
203 | } else { | |
f45257df | 204 | queueRequest(request); |
8967c8c0 BH |
205 | } |
206 | return; | |
207 | } | |
208 | ||
506219d0 BH |
209 | /* |
210 | * Dispatch request in case timer is not running. | |
211 | */ | |
212 | if (fTimer == null) { | |
213 | queueRequest(request); | |
214 | return; | |
215 | } | |
216 | ||
8967c8c0 | 217 | coalesceEventRequest(request); |
6ae0ee68 | 218 | |
2b5c3b7e BH |
219 | if (fIsTimerEnabled) { |
220 | fCurrentTask.cancel(); | |
221 | fCurrentTask = new TimerTask() { | |
222 | @Override | |
223 | public void run() { | |
224 | synchronized (fLock) { | |
225 | fireRequest(true); | |
226 | } | |
8967c8c0 | 227 | } |
2b5c3b7e BH |
228 | }; |
229 | fTimer.schedule(fCurrentTask, DELAY); | |
230 | } | |
fd3f1eff AM |
231 | } |
232 | } | |
233 | ||
2b5c3b7e | 234 | private void fireRequest(boolean isTimeout) { |
fd3f1eff AM |
235 | synchronized (fLock) { |
236 | if (fRequestPendingCounter > 0) { | |
237 | return; | |
238 | } | |
8967c8c0 | 239 | |
fd3f1eff | 240 | if (fPendingCoalescedRequests.size() > 0) { |
8967c8c0 BH |
241 | Iterator<TmfCoalescedEventRequest> iter = fPendingCoalescedRequests.iterator(); |
242 | while (iter.hasNext()) { | |
2b5c3b7e | 243 | ExecutionType type = (isTimeout ? ExecutionType.BACKGROUND : ExecutionType.FOREGROUND); |
8967c8c0 BH |
244 | ITmfEventRequest request = iter.next(); |
245 | if (type == request.getExecType()) { | |
f45257df | 246 | queueRequest(request); |
8967c8c0 BH |
247 | iter.remove(); |
248 | } | |
fd3f1eff | 249 | } |
fd3f1eff | 250 | } |
5419a136 | 251 | } |
5419a136 AM |
252 | } |
253 | ||
fd3f1eff AM |
254 | /** |
255 | * Increments/decrements the pending requests counters and fires the request | |
256 | * if necessary (counter == 0). Used for coalescing requests across multiple | |
257 | * TmfDataProvider's. | |
258 | * | |
259 | * @param isIncrement | |
260 | * Should we increment (true) or decrement (false) the pending | |
261 | * counter | |
262 | */ | |
5419a136 | 263 | @Override |
fd3f1eff AM |
264 | public void notifyPendingRequest(boolean isIncrement) { |
265 | synchronized (fLock) { | |
266 | if (isIncrement) { | |
8967c8c0 | 267 | fRequestPendingCounter++; |
fd3f1eff AM |
268 | } else { |
269 | if (fRequestPendingCounter > 0) { | |
270 | fRequestPendingCounter--; | |
271 | } | |
272 | ||
273 | // fire request if all pending requests are received | |
274 | if (fRequestPendingCounter == 0) { | |
2b5c3b7e | 275 | fireRequest(false); |
6badfac0 | 276 | fireRequest(true); |
fd3f1eff AM |
277 | } |
278 | } | |
279 | } | |
280 | } | |
281 | ||
282 | // ------------------------------------------------------------------------ | |
283 | // Coalescing | |
284 | // ------------------------------------------------------------------------ | |
285 | ||
286 | /** | |
287 | * Create a new request from an existing one, and add it to the coalesced | |
288 | * requests | |
289 | * | |
290 | * @param request | |
291 | * The request to copy | |
292 | */ | |
8967c8c0 BH |
293 | protected void newCoalescedEventRequest(ITmfEventRequest request) { |
294 | synchronized (fLock) { | |
672a642a | 295 | TmfCoalescedEventRequest coalescedRequest = new TmfCoalescedEventRequest( |
fd3f1eff AM |
296 | request.getDataType(), |
297 | request.getRange(), | |
298 | request.getIndex(), | |
299 | request.getNbRequested(), | |
300 | request.getExecType()); | |
301 | coalescedRequest.addRequest(request); | |
8a580390 | 302 | coalescedRequest.setProviderFilter(this); |
5419a136 | 303 | if (TmfCoreTracer.isRequestTraced()) { |
8b56808c GB |
304 | TmfCoreTracer.traceRequest(request.getRequestId(), "COALESCED with " + coalescedRequest.getRequestId()); //$NON-NLS-1$ |
305 | TmfCoreTracer.traceRequest(coalescedRequest.getRequestId(), "now contains " + coalescedRequest.getSubRequestIds()); //$NON-NLS-1$ | |
5419a136 | 306 | } |
6ae0ee68 | 307 | coalesceChildrenRequests(coalescedRequest); |
5419a136 | 308 | fPendingCoalescedRequests.add(coalescedRequest); |
8967c8c0 | 309 | } |
fd3f1eff AM |
310 | } |
311 | ||
312 | /** | |
313 | * Add an existing requests to the list of coalesced ones | |
314 | * | |
315 | * @param request | |
316 | * The request to add to the list | |
317 | */ | |
318 | protected void coalesceEventRequest(ITmfEventRequest request) { | |
319 | synchronized (fLock) { | |
2b5c3b7e | 320 | for (TmfCoalescedEventRequest coalescedRequest : getPendingRequests()) { |
fd3f1eff AM |
321 | if (coalescedRequest.isCompatible(request)) { |
322 | coalescedRequest.addRequest(request); | |
323 | if (TmfCoreTracer.isRequestTraced()) { | |
8b56808c GB |
324 | TmfCoreTracer.traceRequest(request.getRequestId(), "COALESCED with " + coalescedRequest.getRequestId()); //$NON-NLS-1$ |
325 | TmfCoreTracer.traceRequest(coalescedRequest.getRequestId(), "now contains " + coalescedRequest.getSubRequestIds()); //$NON-NLS-1$ | |
fd3f1eff | 326 | } |
6ae0ee68 | 327 | coalesceChildrenRequests(coalescedRequest); |
fd3f1eff AM |
328 | return; |
329 | } | |
330 | } | |
331 | newCoalescedEventRequest(request); | |
332 | } | |
333 | } | |
334 | ||
6ae0ee68 BH |
335 | /* |
336 | * Sends a request with the parent if compatible. | |
337 | */ | |
338 | private boolean sendWithParent(final ITmfEventRequest request) { | |
339 | ITmfEventProvider parent = getParent(); | |
340 | if (parent instanceof TmfEventProvider) { | |
341 | return ((TmfEventProvider) parent).sendIfCompatible(request); | |
342 | } | |
343 | return false; | |
344 | } | |
345 | ||
346 | /* | |
347 | * Sends a request if compatible with a pending coalesced request. | |
8967c8c0 | 348 | */ |
6ae0ee68 | 349 | private boolean sendIfCompatible(ITmfEventRequest request) { |
8967c8c0 | 350 | synchronized (fLock) { |
2b5c3b7e | 351 | for (TmfCoalescedEventRequest coalescedRequest : getPendingRequests()) { |
6ae0ee68 BH |
352 | if (coalescedRequest.isCompatible(request)) { |
353 | // Send so it can be coalesced with the parent(s) | |
354 | sendRequest(request); | |
355 | return true; | |
356 | } | |
357 | } | |
358 | } | |
359 | return sendWithParent(request); | |
360 | } | |
361 | ||
362 | /* | |
363 | * Coalesces children requests with given request if compatible. | |
364 | */ | |
365 | private void coalesceChildrenRequests(final TmfCoalescedEventRequest request) { | |
366 | synchronized (fChildren) { | |
367 | for (TmfEventProvider child : fChildren) { | |
368 | child.coalesceCompatibleRequests(request); | |
369 | } | |
370 | } | |
371 | } | |
372 | ||
373 | ||
374 | /* | |
375 | * Coalesces all pending requests that are compatible with coalesced request. | |
376 | */ | |
377 | private void coalesceCompatibleRequests(TmfCoalescedEventRequest request) { | |
2b5c3b7e | 378 | Iterator<TmfCoalescedEventRequest> iter = getPendingRequests().iterator(); |
6ae0ee68 BH |
379 | while (iter.hasNext()) { |
380 | TmfCoalescedEventRequest pendingRequest = iter.next(); | |
381 | if (request.isCompatible(pendingRequest)) { | |
382 | request.addRequest(pendingRequest); | |
383 | if (TmfCoreTracer.isRequestTraced()) { | |
384 | TmfCoreTracer.traceRequest(pendingRequest.getRequestId(), "COALESCED with " + request.getRequestId()); //$NON-NLS-1$ | |
385 | TmfCoreTracer.traceRequest(request.getRequestId(), "now contains " + request.getSubRequestIds()); //$NON-NLS-1$ | |
8967c8c0 | 386 | } |
6ae0ee68 | 387 | iter.remove(); |
8967c8c0 BH |
388 | } |
389 | } | |
8967c8c0 BH |
390 | } |
391 | ||
fd3f1eff AM |
392 | // ------------------------------------------------------------------------ |
393 | // Request processing | |
394 | // ------------------------------------------------------------------------ | |
395 | ||
fd3f1eff AM |
396 | /** |
397 | * Queue a request. | |
398 | * | |
399 | * @param request | |
400 | * The data request | |
401 | */ | |
402 | protected void queueRequest(final ITmfEventRequest request) { | |
403 | ||
404 | if (fExecutor.isShutdown()) { | |
405 | request.cancel(); | |
406 | return; | |
407 | } | |
408 | ||
409 | TmfEventThread thread = new TmfEventThread(this, request); | |
410 | ||
411 | if (TmfCoreTracer.isRequestTraced()) { | |
8b56808c | 412 | TmfCoreTracer.traceRequest(request.getRequestId(), "QUEUED"); //$NON-NLS-1$ |
fd3f1eff AM |
413 | } |
414 | ||
415 | fExecutor.execute(thread); | |
416 | } | |
417 | ||
fd3f1eff AM |
418 | /** |
419 | * Initialize the provider based on the request. The context is provider | |
420 | * specific and will be updated by getNext(). | |
421 | * | |
422 | * @param request | |
423 | * The request | |
424 | * @return An application specific context; null if request can't be | |
425 | * serviced | |
fd3f1eff AM |
426 | */ |
427 | public abstract ITmfContext armRequest(ITmfEventRequest request); | |
428 | ||
429 | /** | |
430 | * Checks if the data meets the request completion criteria. | |
431 | * | |
432 | * @param request | |
433 | * The request | |
434 | * @param event | |
435 | * The data to verify | |
436 | * @param nbRead | |
437 | * The number of events read so far | |
438 | * @return true if completion criteria is met | |
439 | */ | |
440 | public boolean isCompleted(ITmfEventRequest request, ITmfEvent event, int nbRead) { | |
441 | boolean requestCompleted = isCompleted2(request, nbRead); | |
442 | if (!requestCompleted) { | |
443 | ITmfTimestamp endTime = request.getRange().getEndTime(); | |
065cc19b | 444 | return event.getTimestamp().compareTo(endTime) > 0; |
fd3f1eff AM |
445 | } |
446 | return requestCompleted; | |
447 | } | |
448 | ||
449 | private static boolean isCompleted2(ITmfEventRequest request,int nbRead) { | |
450 | return request.isCompleted() || nbRead >= request.getNbRequested(); | |
451 | } | |
452 | ||
453 | // ------------------------------------------------------------------------ | |
454 | // Pass-through's to the request executor | |
455 | // ------------------------------------------------------------------------ | |
456 | ||
457 | /** | |
458 | * @return the shutdown state (i.e. if it is accepting new requests) | |
fd3f1eff AM |
459 | */ |
460 | protected boolean executorIsShutdown() { | |
461 | return fExecutor.isShutdown(); | |
462 | } | |
463 | ||
464 | /** | |
465 | * @return the termination state | |
fd3f1eff AM |
466 | */ |
467 | protected boolean executorIsTerminated() { | |
468 | return fExecutor.isTerminated(); | |
469 | } | |
470 | ||
471 | // ------------------------------------------------------------------------ | |
472 | // Signal handlers | |
473 | // ------------------------------------------------------------------------ | |
474 | ||
475 | /** | |
476 | * Handler for the start synch signal | |
477 | * | |
478 | * @param signal | |
479 | * Incoming signal | |
480 | */ | |
481 | @TmfSignalHandler | |
482 | public void startSynch(TmfStartSynchSignal signal) { | |
483 | synchronized (fLock) { | |
484 | fSignalDepth++; | |
485 | } | |
486 | } | |
487 | ||
488 | /** | |
489 | * Handler for the end synch signal | |
490 | * | |
491 | * @param signal | |
492 | * Incoming signal | |
493 | */ | |
494 | @TmfSignalHandler | |
495 | public void endSynch(TmfEndSynchSignal signal) { | |
496 | synchronized (fLock) { | |
497 | fSignalDepth--; | |
498 | if (fSignalDepth == 0) { | |
2b5c3b7e | 499 | fireRequest(false); |
fd3f1eff | 500 | } |
5419a136 AM |
501 | } |
502 | } | |
951d134a | 503 | |
d77f31da BH |
504 | @Override |
505 | public ITmfEventProvider getParent() { | |
506 | synchronized (fLock) { | |
507 | return fParent; | |
508 | } | |
509 | } | |
510 | ||
511 | @Override | |
512 | public void setParent(ITmfEventProvider parent) { | |
513 | if (!(parent instanceof TmfEventProvider)) { | |
514 | throw new IllegalArgumentException(); | |
515 | } | |
516 | ||
517 | synchronized (fLock) { | |
518 | fParent = (TmfEventProvider) parent; | |
519 | } | |
520 | } | |
521 | ||
522 | @Override | |
523 | public List<ITmfEventProvider> getChildren() { | |
524 | synchronized (fChildren) { | |
525 | List<ITmfEventProvider> list = new ArrayList<>(); | |
526 | list.addAll(fChildren); | |
527 | return list; | |
528 | } | |
529 | } | |
530 | ||
531 | @Override | |
532 | public <T extends ITmfEventProvider> List<T> getChildren(Class<T> clazz) { | |
533 | List<T> list = new ArrayList<>(); | |
534 | synchronized (fChildren) { | |
535 | for (TmfEventProvider child : fChildren) { | |
536 | if (clazz.isAssignableFrom(child.getClass())) { | |
537 | list.add(clazz.cast(child)); | |
538 | } | |
539 | } | |
540 | } | |
541 | return list; | |
542 | } | |
543 | ||
544 | @Override | |
545 | public ITmfEventProvider getChild(String name) { | |
546 | synchronized (fChildren) { | |
547 | for (TmfEventProvider child : fChildren) { | |
548 | if (child.getName().equals(name)) { | |
549 | return child; | |
550 | } | |
551 | } | |
552 | } | |
553 | return null; | |
554 | } | |
555 | ||
d77f31da BH |
556 | @Override |
557 | public ITmfEventProvider getChild(int index) { | |
5db5a3a4 | 558 | return NonNullUtils.checkNotNull(fChildren.get(index)); |
d77f31da BH |
559 | } |
560 | ||
561 | @Override | |
562 | public void addChild(ITmfEventProvider child) { | |
563 | if (!(child instanceof TmfEventProvider)) { | |
564 | throw new IllegalArgumentException(); | |
565 | } | |
fa62dc1d | 566 | child.setParent(this); |
d77f31da BH |
567 | fChildren.add((TmfEventProvider)child); |
568 | } | |
569 | ||
570 | @Override | |
571 | public int getNbChildren() { | |
572 | return fChildren.size(); | |
573 | } | |
2b5c3b7e | 574 | |
8a580390 BH |
575 | /** |
576 | * Returns true if an event was provided by this event provider or one of | |
577 | * its children event providers else false. | |
578 | * | |
579 | * @param event | |
580 | * the event to check | |
581 | * @return <code>true</code> if event was provided by this provider or one | |
582 | * of its children else <code>false</code> | |
583 | */ | |
6badfac0 | 584 | @Override |
8a580390 | 585 | public boolean matches(ITmfEvent event) { |
6badfac0 BH |
586 | if ((event.getTrace() == this)) { |
587 | return true; | |
588 | } | |
589 | if (fChildren.size() > 0) { | |
590 | synchronized (fLock) { | |
591 | List <TmfEventProvider> children = getChildren(TmfEventProvider.class); | |
592 | for (TmfEventProvider child : children) { | |
8a580390 | 593 | if (child.matches(event)) { |
6badfac0 BH |
594 | return true; |
595 | } | |
596 | } | |
597 | } | |
598 | } | |
599 | return false; | |
600 | } | |
601 | ||
2b5c3b7e BH |
602 | // ------------------------------------------------------------------------ |
603 | // Debug code (will also used in tests using reflection) | |
604 | // ------------------------------------------------------------------------ | |
605 | ||
606 | /** | |
607 | * Gets a list of all pending requests. Debug code. | |
608 | * | |
609 | * @return a list of all pending requests | |
610 | */ | |
611 | private List<TmfCoalescedEventRequest> getPendingRequests() { | |
612 | return fPendingCoalescedRequests; | |
613 | } | |
614 | ||
615 | /** | |
616 | * Clears all pending requests. Debug code. | |
617 | */ | |
618 | private void clearPendingRequests() { | |
619 | fPendingCoalescedRequests.clear(); | |
620 | } | |
621 | ||
622 | /** | |
623 | * Enables/disables the timer. Debug code. | |
624 | * | |
625 | * @param enabled | |
626 | * the enable flag to set | |
627 | */ | |
628 | private void setTimerEnabled(Boolean enabled) { | |
629 | fIsTimerEnabled = enabled; | |
630 | } | |
8c8bf09f | 631 | } |