Commit | Line | Data |
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8c8bf09f | 1 | /******************************************************************************* |
8967c8c0 | 2 | * Copyright (c) 2009, 2014 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; |
2bdf0193 AM |
27 | import org.eclipse.tracecompass.internal.tmf.core.TmfCoreTracer; |
28 | import org.eclipse.tracecompass.internal.tmf.core.component.TmfEventThread; | |
29 | import org.eclipse.tracecompass.internal.tmf.core.component.TmfProviderManager; | |
30 | import org.eclipse.tracecompass.internal.tmf.core.request.TmfCoalescedEventRequest; | |
31 | import org.eclipse.tracecompass.internal.tmf.core.request.TmfRequestExecutor; | |
32 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; | |
33 | import org.eclipse.tracecompass.tmf.core.request.ITmfEventRequest; | |
34 | import org.eclipse.tracecompass.tmf.core.request.ITmfEventRequest.ExecutionType; | |
35 | import org.eclipse.tracecompass.tmf.core.signal.TmfEndSynchSignal; | |
36 | import org.eclipse.tracecompass.tmf.core.signal.TmfSignalHandler; | |
37 | import org.eclipse.tracecompass.tmf.core.signal.TmfStartSynchSignal; | |
38 | import org.eclipse.tracecompass.tmf.core.timestamp.ITmfTimestamp; | |
39 | import org.eclipse.tracecompass.tmf.core.trace.ITmfContext; | |
8c8bf09f ASL |
40 | |
41 | /** | |
fd3f1eff AM |
42 | * An abstract base class that implements ITmfEventProvider. |
43 | * <p> | |
44 | * This abstract class implements the housekeeping methods to register/ | |
45 | * de-register the event provider and to handle generically the event requests. | |
46 | * </p> | |
0283f7ff | 47 | * |
8fd82db5 | 48 | * @author Francois Chouinard |
c4767854 | 49 | * @since 3.0 |
8c8bf09f | 50 | */ |
fd3f1eff AM |
51 | public abstract class TmfEventProvider extends TmfComponent implements ITmfEventProvider { |
52 | ||
53 | // ------------------------------------------------------------------------ | |
54 | // Constants | |
55 | // ------------------------------------------------------------------------ | |
56 | ||
c4767854 AM |
57 | /** Default amount of events per request "chunk" |
58 | * @since 3.0 */ | |
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 | ||
c4767854 AM |
184 | /** |
185 | * @since 3.0 | |
186 | */ | |
5419a136 | 187 | @Override |
fd3f1eff AM |
188 | public void sendRequest(final ITmfEventRequest request) { |
189 | synchronized (fLock) { | |
5a597798 GB |
190 | |
191 | if (TmfCoreTracer.isRequestTraced()) { | |
192 | TmfCoreTracer.traceRequest(request.getRequestId(), "SENT to provider " + getName()); //$NON-NLS-1$ | |
193 | } | |
194 | ||
6badfac0 BH |
195 | if (request.getEventProvider() == null) { |
196 | request.setEventProvider(this); | |
197 | } | |
198 | ||
6ae0ee68 BH |
199 | if (sendWithParent(request)) { |
200 | return; | |
201 | } | |
202 | ||
8967c8c0 BH |
203 | if (request.getExecType() == ExecutionType.FOREGROUND) { |
204 | if ((fSignalDepth > 0) || (fRequestPendingCounter > 0)) { | |
205 | coalesceEventRequest(request); | |
206 | } else { | |
f45257df | 207 | queueRequest(request); |
8967c8c0 BH |
208 | } |
209 | return; | |
210 | } | |
211 | ||
506219d0 BH |
212 | /* |
213 | * Dispatch request in case timer is not running. | |
214 | */ | |
215 | if (fTimer == null) { | |
216 | queueRequest(request); | |
217 | return; | |
218 | } | |
219 | ||
8967c8c0 | 220 | coalesceEventRequest(request); |
6ae0ee68 | 221 | |
2b5c3b7e BH |
222 | if (fIsTimerEnabled) { |
223 | fCurrentTask.cancel(); | |
224 | fCurrentTask = new TimerTask() { | |
225 | @Override | |
226 | public void run() { | |
227 | synchronized (fLock) { | |
228 | fireRequest(true); | |
229 | } | |
8967c8c0 | 230 | } |
2b5c3b7e BH |
231 | }; |
232 | fTimer.schedule(fCurrentTask, DELAY); | |
233 | } | |
fd3f1eff AM |
234 | } |
235 | } | |
236 | ||
2b5c3b7e | 237 | private void fireRequest(boolean isTimeout) { |
fd3f1eff AM |
238 | synchronized (fLock) { |
239 | if (fRequestPendingCounter > 0) { | |
240 | return; | |
241 | } | |
8967c8c0 | 242 | |
fd3f1eff | 243 | if (fPendingCoalescedRequests.size() > 0) { |
8967c8c0 BH |
244 | Iterator<TmfCoalescedEventRequest> iter = fPendingCoalescedRequests.iterator(); |
245 | while (iter.hasNext()) { | |
2b5c3b7e | 246 | ExecutionType type = (isTimeout ? ExecutionType.BACKGROUND : ExecutionType.FOREGROUND); |
8967c8c0 BH |
247 | ITmfEventRequest request = iter.next(); |
248 | if (type == request.getExecType()) { | |
f45257df | 249 | queueRequest(request); |
8967c8c0 BH |
250 | iter.remove(); |
251 | } | |
fd3f1eff | 252 | } |
fd3f1eff | 253 | } |
5419a136 | 254 | } |
5419a136 AM |
255 | } |
256 | ||
fd3f1eff AM |
257 | /** |
258 | * Increments/decrements the pending requests counters and fires the request | |
259 | * if necessary (counter == 0). Used for coalescing requests across multiple | |
260 | * TmfDataProvider's. | |
261 | * | |
262 | * @param isIncrement | |
263 | * Should we increment (true) or decrement (false) the pending | |
264 | * counter | |
265 | */ | |
5419a136 | 266 | @Override |
fd3f1eff AM |
267 | public void notifyPendingRequest(boolean isIncrement) { |
268 | synchronized (fLock) { | |
269 | if (isIncrement) { | |
8967c8c0 | 270 | fRequestPendingCounter++; |
fd3f1eff AM |
271 | } else { |
272 | if (fRequestPendingCounter > 0) { | |
273 | fRequestPendingCounter--; | |
274 | } | |
275 | ||
276 | // fire request if all pending requests are received | |
277 | if (fRequestPendingCounter == 0) { | |
2b5c3b7e | 278 | fireRequest(false); |
6badfac0 | 279 | fireRequest(true); |
fd3f1eff AM |
280 | } |
281 | } | |
282 | } | |
283 | } | |
284 | ||
285 | // ------------------------------------------------------------------------ | |
286 | // Coalescing | |
287 | // ------------------------------------------------------------------------ | |
288 | ||
289 | /** | |
290 | * Create a new request from an existing one, and add it to the coalesced | |
291 | * requests | |
292 | * | |
293 | * @param request | |
294 | * The request to copy | |
c4767854 | 295 | * @since 3.0 |
fd3f1eff | 296 | */ |
8967c8c0 BH |
297 | protected void newCoalescedEventRequest(ITmfEventRequest request) { |
298 | synchronized (fLock) { | |
672a642a | 299 | TmfCoalescedEventRequest coalescedRequest = new TmfCoalescedEventRequest( |
fd3f1eff AM |
300 | request.getDataType(), |
301 | request.getRange(), | |
302 | request.getIndex(), | |
303 | request.getNbRequested(), | |
304 | request.getExecType()); | |
305 | coalescedRequest.addRequest(request); | |
6badfac0 | 306 | coalescedRequest.setEventProvider(this); |
5419a136 | 307 | if (TmfCoreTracer.isRequestTraced()) { |
8b56808c GB |
308 | TmfCoreTracer.traceRequest(request.getRequestId(), "COALESCED with " + coalescedRequest.getRequestId()); //$NON-NLS-1$ |
309 | TmfCoreTracer.traceRequest(coalescedRequest.getRequestId(), "now contains " + coalescedRequest.getSubRequestIds()); //$NON-NLS-1$ | |
5419a136 | 310 | } |
6ae0ee68 | 311 | coalesceChildrenRequests(coalescedRequest); |
5419a136 | 312 | fPendingCoalescedRequests.add(coalescedRequest); |
8967c8c0 | 313 | } |
fd3f1eff AM |
314 | } |
315 | ||
316 | /** | |
317 | * Add an existing requests to the list of coalesced ones | |
318 | * | |
319 | * @param request | |
320 | * The request to add to the list | |
c4767854 | 321 | * @since 3.0 |
fd3f1eff AM |
322 | */ |
323 | protected void coalesceEventRequest(ITmfEventRequest request) { | |
324 | synchronized (fLock) { | |
2b5c3b7e | 325 | for (TmfCoalescedEventRequest coalescedRequest : getPendingRequests()) { |
fd3f1eff AM |
326 | if (coalescedRequest.isCompatible(request)) { |
327 | coalescedRequest.addRequest(request); | |
328 | if (TmfCoreTracer.isRequestTraced()) { | |
8b56808c GB |
329 | TmfCoreTracer.traceRequest(request.getRequestId(), "COALESCED with " + coalescedRequest.getRequestId()); //$NON-NLS-1$ |
330 | TmfCoreTracer.traceRequest(coalescedRequest.getRequestId(), "now contains " + coalescedRequest.getSubRequestIds()); //$NON-NLS-1$ | |
fd3f1eff | 331 | } |
6ae0ee68 | 332 | coalesceChildrenRequests(coalescedRequest); |
fd3f1eff AM |
333 | return; |
334 | } | |
335 | } | |
336 | newCoalescedEventRequest(request); | |
337 | } | |
338 | } | |
339 | ||
6ae0ee68 BH |
340 | /* |
341 | * Sends a request with the parent if compatible. | |
342 | */ | |
343 | private boolean sendWithParent(final ITmfEventRequest request) { | |
344 | ITmfEventProvider parent = getParent(); | |
345 | if (parent instanceof TmfEventProvider) { | |
346 | return ((TmfEventProvider) parent).sendIfCompatible(request); | |
347 | } | |
348 | return false; | |
349 | } | |
350 | ||
351 | /* | |
352 | * Sends a request if compatible with a pending coalesced request. | |
8967c8c0 | 353 | */ |
6ae0ee68 | 354 | private boolean sendIfCompatible(ITmfEventRequest request) { |
8967c8c0 | 355 | synchronized (fLock) { |
2b5c3b7e | 356 | for (TmfCoalescedEventRequest coalescedRequest : getPendingRequests()) { |
6ae0ee68 BH |
357 | if (coalescedRequest.isCompatible(request)) { |
358 | // Send so it can be coalesced with the parent(s) | |
359 | sendRequest(request); | |
360 | return true; | |
361 | } | |
362 | } | |
363 | } | |
364 | return sendWithParent(request); | |
365 | } | |
366 | ||
367 | /* | |
368 | * Coalesces children requests with given request if compatible. | |
369 | */ | |
370 | private void coalesceChildrenRequests(final TmfCoalescedEventRequest request) { | |
371 | synchronized (fChildren) { | |
372 | for (TmfEventProvider child : fChildren) { | |
373 | child.coalesceCompatibleRequests(request); | |
374 | } | |
375 | } | |
376 | } | |
377 | ||
378 | ||
379 | /* | |
380 | * Coalesces all pending requests that are compatible with coalesced request. | |
381 | */ | |
382 | private void coalesceCompatibleRequests(TmfCoalescedEventRequest request) { | |
2b5c3b7e | 383 | Iterator<TmfCoalescedEventRequest> iter = getPendingRequests().iterator(); |
6ae0ee68 BH |
384 | while (iter.hasNext()) { |
385 | TmfCoalescedEventRequest pendingRequest = iter.next(); | |
386 | if (request.isCompatible(pendingRequest)) { | |
387 | request.addRequest(pendingRequest); | |
388 | if (TmfCoreTracer.isRequestTraced()) { | |
389 | TmfCoreTracer.traceRequest(pendingRequest.getRequestId(), "COALESCED with " + request.getRequestId()); //$NON-NLS-1$ | |
390 | TmfCoreTracer.traceRequest(request.getRequestId(), "now contains " + request.getSubRequestIds()); //$NON-NLS-1$ | |
8967c8c0 | 391 | } |
6ae0ee68 | 392 | iter.remove(); |
8967c8c0 BH |
393 | } |
394 | } | |
8967c8c0 BH |
395 | } |
396 | ||
fd3f1eff AM |
397 | // ------------------------------------------------------------------------ |
398 | // Request processing | |
399 | // ------------------------------------------------------------------------ | |
400 | ||
fd3f1eff AM |
401 | /** |
402 | * Queue a request. | |
403 | * | |
404 | * @param request | |
405 | * The data request | |
c4767854 | 406 | * @since 3.0 |
fd3f1eff AM |
407 | */ |
408 | protected void queueRequest(final ITmfEventRequest request) { | |
409 | ||
410 | if (fExecutor.isShutdown()) { | |
411 | request.cancel(); | |
412 | return; | |
413 | } | |
414 | ||
415 | TmfEventThread thread = new TmfEventThread(this, request); | |
416 | ||
417 | if (TmfCoreTracer.isRequestTraced()) { | |
8b56808c | 418 | TmfCoreTracer.traceRequest(request.getRequestId(), "QUEUED"); //$NON-NLS-1$ |
fd3f1eff AM |
419 | } |
420 | ||
421 | fExecutor.execute(thread); | |
422 | } | |
423 | ||
fd3f1eff AM |
424 | /** |
425 | * Initialize the provider based on the request. The context is provider | |
426 | * specific and will be updated by getNext(). | |
427 | * | |
428 | * @param request | |
429 | * The request | |
430 | * @return An application specific context; null if request can't be | |
431 | * serviced | |
c4767854 | 432 | * @since 3.0 |
fd3f1eff AM |
433 | */ |
434 | public abstract ITmfContext armRequest(ITmfEventRequest request); | |
435 | ||
436 | /** | |
437 | * Checks if the data meets the request completion criteria. | |
438 | * | |
439 | * @param request | |
440 | * The request | |
441 | * @param event | |
442 | * The data to verify | |
443 | * @param nbRead | |
444 | * The number of events read so far | |
445 | * @return true if completion criteria is met | |
c4767854 | 446 | * @since 3.0 |
fd3f1eff AM |
447 | */ |
448 | public boolean isCompleted(ITmfEventRequest request, ITmfEvent event, int nbRead) { | |
449 | boolean requestCompleted = isCompleted2(request, nbRead); | |
450 | if (!requestCompleted) { | |
451 | ITmfTimestamp endTime = request.getRange().getEndTime(); | |
065cc19b | 452 | return event.getTimestamp().compareTo(endTime) > 0; |
fd3f1eff AM |
453 | } |
454 | return requestCompleted; | |
455 | } | |
456 | ||
457 | private static boolean isCompleted2(ITmfEventRequest request,int nbRead) { | |
458 | return request.isCompleted() || nbRead >= request.getNbRequested(); | |
459 | } | |
460 | ||
461 | // ------------------------------------------------------------------------ | |
462 | // Pass-through's to the request executor | |
463 | // ------------------------------------------------------------------------ | |
464 | ||
465 | /** | |
466 | * @return the shutdown state (i.e. if it is accepting new requests) | |
467 | * @since 2.0 | |
468 | */ | |
469 | protected boolean executorIsShutdown() { | |
470 | return fExecutor.isShutdown(); | |
471 | } | |
472 | ||
473 | /** | |
474 | * @return the termination state | |
475 | * @since 2.0 | |
476 | */ | |
477 | protected boolean executorIsTerminated() { | |
478 | return fExecutor.isTerminated(); | |
479 | } | |
480 | ||
481 | // ------------------------------------------------------------------------ | |
482 | // Signal handlers | |
483 | // ------------------------------------------------------------------------ | |
484 | ||
485 | /** | |
486 | * Handler for the start synch signal | |
487 | * | |
488 | * @param signal | |
489 | * Incoming signal | |
490 | */ | |
491 | @TmfSignalHandler | |
492 | public void startSynch(TmfStartSynchSignal signal) { | |
493 | synchronized (fLock) { | |
494 | fSignalDepth++; | |
495 | } | |
496 | } | |
497 | ||
498 | /** | |
499 | * Handler for the end synch signal | |
500 | * | |
501 | * @param signal | |
502 | * Incoming signal | |
503 | */ | |
504 | @TmfSignalHandler | |
505 | public void endSynch(TmfEndSynchSignal signal) { | |
506 | synchronized (fLock) { | |
507 | fSignalDepth--; | |
508 | if (fSignalDepth == 0) { | |
2b5c3b7e | 509 | fireRequest(false); |
fd3f1eff | 510 | } |
5419a136 AM |
511 | } |
512 | } | |
951d134a | 513 | |
d77f31da BH |
514 | @Override |
515 | public ITmfEventProvider getParent() { | |
516 | synchronized (fLock) { | |
517 | return fParent; | |
518 | } | |
519 | } | |
520 | ||
521 | @Override | |
522 | public void setParent(ITmfEventProvider parent) { | |
523 | if (!(parent instanceof TmfEventProvider)) { | |
524 | throw new IllegalArgumentException(); | |
525 | } | |
526 | ||
527 | synchronized (fLock) { | |
528 | fParent = (TmfEventProvider) parent; | |
529 | } | |
530 | } | |
531 | ||
532 | @Override | |
533 | public List<ITmfEventProvider> getChildren() { | |
534 | synchronized (fChildren) { | |
535 | List<ITmfEventProvider> list = new ArrayList<>(); | |
536 | list.addAll(fChildren); | |
537 | return list; | |
538 | } | |
539 | } | |
540 | ||
541 | @Override | |
542 | public <T extends ITmfEventProvider> List<T> getChildren(Class<T> clazz) { | |
543 | List<T> list = new ArrayList<>(); | |
544 | synchronized (fChildren) { | |
545 | for (TmfEventProvider child : fChildren) { | |
546 | if (clazz.isAssignableFrom(child.getClass())) { | |
547 | list.add(clazz.cast(child)); | |
548 | } | |
549 | } | |
550 | } | |
551 | return list; | |
552 | } | |
553 | ||
554 | @Override | |
555 | public ITmfEventProvider getChild(String name) { | |
556 | synchronized (fChildren) { | |
557 | for (TmfEventProvider child : fChildren) { | |
558 | if (child.getName().equals(name)) { | |
559 | return child; | |
560 | } | |
561 | } | |
562 | } | |
563 | return null; | |
564 | } | |
565 | ||
566 | @SuppressWarnings("null") | |
567 | @Override | |
568 | public ITmfEventProvider getChild(int index) { | |
569 | return fChildren.get(index); | |
570 | } | |
571 | ||
572 | @Override | |
573 | public void addChild(ITmfEventProvider child) { | |
574 | if (!(child instanceof TmfEventProvider)) { | |
575 | throw new IllegalArgumentException(); | |
576 | } | |
577 | fChildren.add((TmfEventProvider)child); | |
578 | } | |
579 | ||
580 | @Override | |
581 | public int getNbChildren() { | |
582 | return fChildren.size(); | |
583 | } | |
2b5c3b7e | 584 | |
6badfac0 BH |
585 | @Override |
586 | public boolean providesEvent(ITmfEvent event) { | |
587 | if ((event.getTrace() == this)) { | |
588 | return true; | |
589 | } | |
590 | if (fChildren.size() > 0) { | |
591 | synchronized (fLock) { | |
592 | List <TmfEventProvider> children = getChildren(TmfEventProvider.class); | |
593 | for (TmfEventProvider child : children) { | |
594 | if (child.providesEvent(event)) { | |
595 | return true; | |
596 | } | |
597 | } | |
598 | } | |
599 | } | |
600 | return false; | |
601 | } | |
602 | ||
2b5c3b7e BH |
603 | // ------------------------------------------------------------------------ |
604 | // Debug code (will also used in tests using reflection) | |
605 | // ------------------------------------------------------------------------ | |
606 | ||
607 | /** | |
608 | * Gets a list of all pending requests. Debug code. | |
609 | * | |
610 | * @return a list of all pending requests | |
611 | */ | |
612 | private List<TmfCoalescedEventRequest> getPendingRequests() { | |
613 | return fPendingCoalescedRequests; | |
614 | } | |
615 | ||
616 | /** | |
617 | * Clears all pending requests. Debug code. | |
618 | */ | |
619 | private void clearPendingRequests() { | |
620 | fPendingCoalescedRequests.clear(); | |
621 | } | |
622 | ||
623 | /** | |
624 | * Enables/disables the timer. Debug code. | |
625 | * | |
626 | * @param enabled | |
627 | * the enable flag to set | |
628 | */ | |
629 | private void setTimerEnabled(Boolean enabled) { | |
630 | fIsTimerEnabled = enabled; | |
631 | } | |
8c8bf09f | 632 | } |