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8c8bf09f ASL |
1 | /******************************************************************************* |
2 | * Copyright (c) 2009, 2010 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 ASL |
9 | * Contributors: |
10 | * Francois Chouinard - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
6c13869b | 13 | package org.eclipse.linuxtools.tmf.core.component; |
8c8bf09f | 14 | |
8c8bf09f ASL |
15 | import java.util.Vector; |
16 | import java.util.concurrent.BlockingQueue; | |
17 | import java.util.concurrent.LinkedBlockingQueue; | |
9b635e61 | 18 | import java.util.concurrent.SynchronousQueue; |
8c8bf09f | 19 | |
5500a7f0 | 20 | import org.eclipse.linuxtools.internal.tmf.core.TmfCoreTracer; |
8fd82db5 FC |
21 | import org.eclipse.linuxtools.internal.tmf.core.component.TmfProviderManager; |
22 | import org.eclipse.linuxtools.internal.tmf.core.component.TmfThread; | |
23 | import org.eclipse.linuxtools.internal.tmf.core.request.TmfCoalescedDataRequest; | |
24 | import org.eclipse.linuxtools.internal.tmf.core.request.TmfRequestExecutor; | |
72f1e62a | 25 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; |
6c13869b | 26 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest; |
4c564a2d | 27 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType; |
6c13869b | 28 | import org.eclipse.linuxtools.tmf.core.request.TmfDataRequest; |
6c13869b FC |
29 | import org.eclipse.linuxtools.tmf.core.signal.TmfEndSynchSignal; |
30 | import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler; | |
31 | import org.eclipse.linuxtools.tmf.core.signal.TmfStartSynchSignal; | |
32 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; | |
8c8bf09f ASL |
33 | |
34 | /** | |
8fd82db5 | 35 | * An abstract base class that implements ITmfDataProvider. |
8c8bf09f | 36 | * <p> |
8fd82db5 FC |
37 | * This abstract class implements the housekeeping methods to register/ |
38 | * de-register the event provider and to handle generically the event requests. | |
8c8bf09f | 39 | * <p> |
8fd82db5 FC |
40 | * The concrete class can either re-implement processRequest() entirely or just |
41 | * implement the hooks (initializeContext() and getNext()). | |
8c8bf09f ASL |
42 | * <p> |
43 | * TODO: Add support for providing multiple data types. | |
0283f7ff | 44 | * |
8fd82db5 FC |
45 | * @version 1.0 |
46 | * @author Francois Chouinard | |
8c8bf09f | 47 | */ |
6256d8ad | 48 | public abstract class TmfDataProvider extends TmfComponent implements ITmfDataProvider { |
8c8bf09f | 49 | |
948b0607 FC |
50 | // ------------------------------------------------------------------------ |
51 | // Constants | |
52 | // ------------------------------------------------------------------------ | |
550d787e | 53 | |
063f0d27 | 54 | /** Default amount of events per request "chunk" */ |
00641a97 | 55 | public static final int DEFAULT_BLOCK_SIZE = 50000; |
063f0d27 AM |
56 | |
57 | /** Default size of the queue */ | |
00641a97 FC |
58 | public static final int DEFAULT_QUEUE_SIZE = 1000; |
59 | ||
948b0607 | 60 | // ------------------------------------------------------------------------ |
12c155f5 | 61 | // Attributes |
948b0607 | 62 | // ------------------------------------------------------------------------ |
8c8bf09f | 63 | |
6f4e8ec0 | 64 | /** The type of event handled by this provider */ |
6256d8ad | 65 | protected Class<? extends ITmfEvent> fType; |
6f4e8ec0 AM |
66 | |
67 | /** Is there some data being logged? */ | |
12c155f5 | 68 | protected boolean fLogData; |
6f4e8ec0 AM |
69 | |
70 | /** Are errors being logged? */ | |
12c155f5 | 71 | protected boolean fLogError; |
f6b14ce2 | 72 | |
6f4e8ec0 | 73 | /** Queue of events */ |
6256d8ad | 74 | protected BlockingQueue<ITmfEvent> fDataQueue; |
6f4e8ec0 AM |
75 | |
76 | /** Size of the fDataQueue */ | |
77 | protected int fQueueSize = DEFAULT_QUEUE_SIZE; | |
78 | ||
fc7cd0be | 79 | private TmfRequestExecutor fExecutor; |
948b0607 FC |
80 | |
81 | private int fSignalDepth = 0; | |
045df77d | 82 | private final Object fLock = new Object(); |
951d134a | 83 | |
c1c69938 FC |
84 | private int fRequestPendingCounter = 0; |
85 | ||
948b0607 FC |
86 | // ------------------------------------------------------------------------ |
87 | // Constructors | |
88 | // ------------------------------------------------------------------------ | |
89 | ||
063f0d27 AM |
90 | /** |
91 | * Default constructor | |
92 | */ | |
12c155f5 | 93 | public TmfDataProvider() { |
00641a97 | 94 | super(); |
12c155f5 | 95 | fQueueSize = DEFAULT_QUEUE_SIZE; |
6256d8ad | 96 | fDataQueue = new LinkedBlockingQueue<ITmfEvent>(fQueueSize); |
12c155f5 FC |
97 | fExecutor = new TmfRequestExecutor(); |
98 | } | |
99 | ||
063f0d27 AM |
100 | /** |
101 | * Initialize this data provider | |
102 | * | |
103 | * @param name | |
104 | * Name of the provider | |
105 | * @param type | |
106 | * The type of events that will be handled | |
107 | */ | |
6256d8ad | 108 | public void init(String name, Class<? extends ITmfEvent> type) { |
12c155f5 | 109 | super.init(name); |
3791b5df | 110 | fType = type; |
6256d8ad | 111 | fDataQueue = (fQueueSize > 1) ? new LinkedBlockingQueue<ITmfEvent>(fQueueSize) : new SynchronousQueue<ITmfEvent>(); |
12c155f5 FC |
112 | |
113 | fExecutor = new TmfRequestExecutor(); | |
114 | fSignalDepth = 0; | |
115 | ||
5500a7f0 FC |
116 | fLogData = TmfCoreTracer.isEventTraced(); |
117 | // fLogError = TmfCoreTracer.isErrorTraced(); | |
12c155f5 FC |
118 | |
119 | TmfProviderManager.register(fType, this); | |
120 | } | |
121 | ||
6f4e8ec0 AM |
122 | /** |
123 | * Constructor specifying the event type and the queue size. | |
124 | * | |
125 | * @param name | |
126 | * Name of the provider | |
127 | * @param type | |
128 | * Type of event that will be handled | |
129 | * @param queueSize | |
130 | * Size of the event queue | |
131 | */ | |
6256d8ad | 132 | protected TmfDataProvider(String name, Class<? extends ITmfEvent> type, int queueSize) { |
00641a97 | 133 | this(); |
948b0607 | 134 | fQueueSize = queueSize; |
00641a97 | 135 | init(name, type); |
948b0607 FC |
136 | } |
137 | ||
063f0d27 AM |
138 | /** |
139 | * Copy constructor | |
140 | * | |
141 | * @param other | |
142 | * The other object to copy | |
143 | */ | |
6256d8ad | 144 | public TmfDataProvider(TmfDataProvider other) { |
00641a97 FC |
145 | this(); |
146 | init(other.getName(), other.fType); | |
147 | } | |
550d787e | 148 | |
063f0d27 AM |
149 | /** |
150 | * Standard constructor. Instantiate and initialize at the same time. | |
151 | * | |
152 | * @param name | |
153 | * Name of the provider | |
154 | * @param type | |
155 | * The type of events that will be handled | |
156 | */ | |
6256d8ad | 157 | public TmfDataProvider(String name, Class<? extends ITmfEvent> type) { |
00641a97 | 158 | this(name, type, DEFAULT_QUEUE_SIZE); |
948b0607 FC |
159 | } |
160 | ||
161 | @Override | |
162 | public void dispose() { | |
163 | TmfProviderManager.deregister(fType, this); | |
164 | fExecutor.stop(); | |
165 | super.dispose(); | |
12c155f5 | 166 | // if (Tracer.isComponentTraced()) Tracer.traceComponent(this, "stopped"); |
948b0607 FC |
167 | } |
168 | ||
00641a97 FC |
169 | // ------------------------------------------------------------------------ |
170 | // Accessors | |
171 | // ------------------------------------------------------------------------ | |
172 | ||
063f0d27 AM |
173 | /** |
174 | * Get the queue size of this provider | |
175 | * | |
176 | * @return The size of the queue | |
177 | */ | |
948b0607 FC |
178 | public int getQueueSize() { |
179 | return fQueueSize; | |
180 | } | |
181 | ||
063f0d27 AM |
182 | /** |
183 | * Get the event type this provider handles | |
184 | * | |
185 | * @return The type of ITmfEvent | |
186 | */ | |
948b0607 FC |
187 | public Class<?> getType() { |
188 | return fType; | |
189 | } | |
190 | ||
191 | // ------------------------------------------------------------------------ | |
192 | // ITmfRequestHandler | |
193 | // ------------------------------------------------------------------------ | |
194 | ||
195 | @Override | |
6256d8ad | 196 | public void sendRequest(final ITmfDataRequest request) { |
948b0607 FC |
197 | synchronized (fLock) { |
198 | if (fSignalDepth > 0) { | |
199 | coalesceDataRequest(request); | |
200 | } else { | |
201 | dispatchRequest(request); | |
202 | } | |
203 | } | |
204 | } | |
205 | ||
948b0607 | 206 | @Override |
c1c69938 | 207 | public void fireRequest() { |
948b0607 FC |
208 | synchronized (fLock) { |
209 | if (fRequestPendingCounter > 0) { | |
210 | return; | |
211 | } | |
212 | if (fPendingCoalescedRequests.size() > 0) { | |
6256d8ad | 213 | for (TmfDataRequest request : fPendingCoalescedRequests) { |
948b0607 FC |
214 | dispatchRequest(request); |
215 | } | |
216 | fPendingCoalescedRequests.clear(); | |
217 | } | |
218 | } | |
219 | } | |
220 | ||
221 | /** | |
063f0d27 | 222 | * Increments/decrements the pending requests counters and fires the request |
0283f7ff FC |
223 | * if necessary (counter == 0). Used for coalescing requests across multiple |
224 | * TmfDataProvider's. | |
063f0d27 | 225 | * |
948b0607 | 226 | * @param isIncrement |
0283f7ff FC |
227 | * Should we increment (true) or decrement (false) the pending |
228 | * counter | |
948b0607 | 229 | */ |
c1c69938 FC |
230 | @Override |
231 | public void notifyPendingRequest(boolean isIncrement) { | |
948b0607 | 232 | synchronized (fLock) { |
c1c69938 FC |
233 | if (isIncrement) { |
234 | if (fSignalDepth > 0) { | |
235 | fRequestPendingCounter++; | |
236 | } | |
237 | } else { | |
238 | if (fRequestPendingCounter > 0) { | |
239 | fRequestPendingCounter--; | |
240 | } | |
948b0607 | 241 | |
c1c69938 FC |
242 | // fire request if all pending requests are received |
243 | if (fRequestPendingCounter == 0) { | |
244 | fireRequest(); | |
245 | } | |
246 | } | |
247 | } | |
948b0607 FC |
248 | } |
249 | ||
250 | // ------------------------------------------------------------------------ | |
251 | // Coalescing (primitive test...) | |
252 | // ------------------------------------------------------------------------ | |
253 | ||
6f4e8ec0 | 254 | /** List of coalesced requests */ |
6256d8ad | 255 | protected Vector<TmfCoalescedDataRequest> fPendingCoalescedRequests = new Vector<TmfCoalescedDataRequest>(); |
948b0607 | 256 | |
6f4e8ec0 AM |
257 | /** |
258 | * Create a new request from an existing one, and add it to the coalesced | |
259 | * requests | |
260 | * | |
261 | * @param request | |
262 | * The request to copy | |
263 | */ | |
6256d8ad | 264 | protected void newCoalescedDataRequest(ITmfDataRequest request) { |
948b0607 | 265 | synchronized (fLock) { |
6256d8ad | 266 | TmfCoalescedDataRequest coalescedRequest = new TmfCoalescedDataRequest(request.getDataType(), request.getIndex(), |
12c155f5 | 267 | request.getNbRequested(), request.getBlockSize(), request.getExecType()); |
948b0607 | 268 | coalescedRequest.addRequest(request); |
5500a7f0 FC |
269 | if (TmfCoreTracer.isRequestTraced()) { |
270 | TmfCoreTracer.traceRequest(request, "COALESCED with " + coalescedRequest.getRequestId()); //$NON-NLS-1$ | |
271 | TmfCoreTracer.traceRequest(coalescedRequest, "now contains " + coalescedRequest.getSubRequestIds()); //$NON-NLS-1$ | |
948b0607 FC |
272 | } |
273 | fPendingCoalescedRequests.add(coalescedRequest); | |
274 | } | |
275 | } | |
276 | ||
6f4e8ec0 AM |
277 | /** |
278 | * Add an existing requests to the list of coalesced ones | |
279 | * | |
280 | * @param request | |
281 | * The request to add to the list | |
282 | */ | |
6256d8ad | 283 | protected void coalesceDataRequest(ITmfDataRequest request) { |
948b0607 | 284 | synchronized (fLock) { |
6256d8ad | 285 | for (TmfCoalescedDataRequest coalescedRequest : fPendingCoalescedRequests) { |
948b0607 FC |
286 | if (coalescedRequest.isCompatible(request)) { |
287 | coalescedRequest.addRequest(request); | |
5500a7f0 FC |
288 | if (TmfCoreTracer.isRequestTraced()) { |
289 | TmfCoreTracer.traceRequest(request, "COALESCED with " + coalescedRequest.getRequestId()); //$NON-NLS-1$ | |
290 | TmfCoreTracer.traceRequest(coalescedRequest, "now contains " + coalescedRequest.getSubRequestIds()); //$NON-NLS-1$ | |
948b0607 FC |
291 | } |
292 | return; | |
293 | } | |
294 | } | |
295 | newCoalescedDataRequest(request); | |
296 | } | |
297 | } | |
298 | ||
299 | // ------------------------------------------------------------------------ | |
300 | // Request processing | |
301 | // ------------------------------------------------------------------------ | |
302 | ||
6256d8ad | 303 | private void dispatchRequest(final ITmfDataRequest request) { |
0283f7ff | 304 | if (request.getExecType() == ExecutionType.FOREGROUND) { |
948b0607 | 305 | queueRequest(request); |
0283f7ff | 306 | } else { |
948b0607 | 307 | queueBackgroundRequest(request, request.getBlockSize(), true); |
0283f7ff | 308 | } |
948b0607 FC |
309 | } |
310 | ||
6f4e8ec0 AM |
311 | /** |
312 | * Queue a request. | |
313 | * | |
314 | * @param request | |
315 | * The data request | |
316 | */ | |
6256d8ad | 317 | protected void queueRequest(final ITmfDataRequest request) { |
948b0607 FC |
318 | |
319 | if (fExecutor.isShutdown()) { | |
320 | request.cancel(); | |
321 | return; | |
322 | } | |
323 | ||
6256d8ad | 324 | final TmfDataProvider provider = this; |
948b0607 FC |
325 | |
326 | // Process the request | |
327 | TmfThread thread = new TmfThread(request.getExecType()) { | |
0283f7ff | 328 | |
948b0607 FC |
329 | @Override |
330 | public void run() { | |
331 | ||
5500a7f0 FC |
332 | if (TmfCoreTracer.isRequestTraced()) { |
333 | TmfCoreTracer.traceRequest(request, "is being serviced by " + provider.getName()); //$NON-NLS-1$ | |
4cf201de | 334 | } |
948b0607 FC |
335 | |
336 | // Extract the generic information | |
337 | request.start(); | |
338 | int nbRequested = request.getNbRequested(); | |
339 | int nbRead = 0; | |
340 | ||
341 | // Initialize the execution | |
342 | ITmfContext context = armRequest(request); | |
343 | if (context == null) { | |
344 | request.cancel(); | |
345 | return; | |
346 | } | |
347 | ||
348 | try { | |
349 | // Get the ordered events | |
6256d8ad | 350 | ITmfEvent data = getNext(context); |
5500a7f0 FC |
351 | if (TmfCoreTracer.isRequestTraced()) { |
352 | TmfCoreTracer.traceRequest(request, "read first event"); //$NON-NLS-1$ | |
0283f7ff | 353 | } |
948b0607 | 354 | while (data != null && !isCompleted(request, data, nbRead)) { |
0283f7ff | 355 | if (fLogData) { |
5500a7f0 | 356 | TmfCoreTracer.traceEvent(provider, request, data); |
408e65d2 | 357 | } |
1b70b6dc PT |
358 | if (request.getDataType().isInstance(data)) { |
359 | request.handleData(data); | |
360 | } | |
948b0607 FC |
361 | |
362 | // To avoid an unnecessary read passed the last data | |
363 | // requested | |
364 | if (++nbRead < nbRequested) { | |
365 | data = getNext(context); | |
366 | } | |
367 | } | |
5500a7f0 FC |
368 | if (TmfCoreTracer.isRequestTraced()) { |
369 | TmfCoreTracer.traceRequest(request, "COMPLETED"); //$NON-NLS-1$ | |
0283f7ff | 370 | } |
948b0607 FC |
371 | |
372 | if (request.isCancelled()) { | |
373 | request.cancel(); | |
374 | } else { | |
375 | request.done(); | |
376 | } | |
377 | } catch (Exception e) { | |
378 | request.fail(); | |
379 | } | |
380 | ||
381 | // Cleanup | |
382 | context.dispose(); | |
383 | } | |
475743b7 FC |
384 | |
385 | @Override | |
386 | public void cancel() { | |
8a0edc79 FC |
387 | if (!request.isCompleted()) { |
388 | request.cancel(); | |
475743b7 FC |
389 | } |
390 | } | |
948b0607 FC |
391 | }; |
392 | ||
5500a7f0 FC |
393 | if (TmfCoreTracer.isRequestTraced()) { |
394 | TmfCoreTracer.traceRequest(request, "QUEUED"); //$NON-NLS-1$ | |
0283f7ff | 395 | } |
948b0607 | 396 | fExecutor.execute(thread); |
948b0607 FC |
397 | } |
398 | ||
6f4e8ec0 AM |
399 | /** |
400 | * Queue a background request | |
401 | * | |
402 | * @param request | |
403 | * The request | |
404 | * @param blockSize | |
405 | * The request should be split in chunks of this size | |
406 | * @param indexing | |
407 | * Should we index the chunks | |
408 | */ | |
409 | protected void queueBackgroundRequest(final ITmfDataRequest request, | |
410 | final int blockSize, final boolean indexing) { | |
948b0607 | 411 | |
6256d8ad | 412 | final TmfDataProvider provider = this; |
4cf201de | 413 | |
948b0607 FC |
414 | Thread thread = new Thread() { |
415 | @Override | |
416 | public void run() { | |
4cf201de | 417 | |
5500a7f0 FC |
418 | if (TmfCoreTracer.isRequestTraced()) { |
419 | TmfCoreTracer.traceRequest(request, "is being serviced by " + provider.getName()); //$NON-NLS-1$ | |
4cf201de FC |
420 | } |
421 | ||
948b0607 FC |
422 | request.start(); |
423 | ||
424 | final Integer[] CHUNK_SIZE = new Integer[1]; | |
425 | CHUNK_SIZE[0] = Math.min(request.getNbRequested(), blockSize + ((indexing) ? 1 : 0)); | |
426 | ||
427 | final Integer[] nbRead = new Integer[1]; | |
428 | nbRead[0] = 0; | |
429 | ||
430 | final Boolean[] isFinished = new Boolean[1]; | |
431 | isFinished[0] = Boolean.FALSE; | |
432 | ||
433 | while (!isFinished[0]) { | |
434 | ||
6256d8ad | 435 | TmfDataRequest subRequest = new TmfDataRequest(request.getDataType(), request.getIndex() |
12c155f5 | 436 | + nbRead[0], CHUNK_SIZE[0], blockSize, ExecutionType.BACKGROUND) { |
11a2fdf0 PT |
437 | |
438 | @Override | |
439 | public synchronized boolean isCompleted() { | |
440 | return super.isCompleted() || request.isCompleted(); | |
441 | } | |
442 | ||
948b0607 | 443 | @Override |
6256d8ad | 444 | public void handleData(ITmfEvent data) { |
948b0607 | 445 | super.handleData(data); |
1b70b6dc PT |
446 | if (request.getDataType().isInstance(data)) { |
447 | request.handleData(data); | |
448 | } | |
948b0607 FC |
449 | if (getNbRead() > CHUNK_SIZE[0]) { |
450 | System.out.println("ERROR - Read too many events"); //$NON-NLS-1$ | |
451 | } | |
452 | } | |
453 | ||
454 | @Override | |
455 | public void handleCompleted() { | |
456 | nbRead[0] += getNbRead(); | |
457 | if (nbRead[0] >= request.getNbRequested() || (getNbRead() < CHUNK_SIZE[0])) { | |
90de83da | 458 | if (this.isCancelled()) { |
948b0607 | 459 | request.cancel(); |
90de83da | 460 | } else if (this.isFailed()) { |
12c155f5 | 461 | request.fail(); |
948b0607 FC |
462 | } else { |
463 | request.done(); | |
464 | } | |
465 | isFinished[0] = Boolean.TRUE; | |
466 | } | |
467 | super.handleCompleted(); | |
468 | } | |
469 | }; | |
470 | ||
471 | if (!isFinished[0]) { | |
472 | queueRequest(subRequest); | |
473 | ||
474 | try { | |
475 | subRequest.waitForCompletion(); | |
11a2fdf0 PT |
476 | if (request.isCompleted()) { |
477 | isFinished[0] = Boolean.TRUE; | |
478 | } | |
948b0607 FC |
479 | } catch (InterruptedException e) { |
480 | e.printStackTrace(); | |
481 | } | |
482 | ||
483 | CHUNK_SIZE[0] = Math.min(request.getNbRequested() - nbRead[0], blockSize); | |
484 | } | |
485 | } | |
486 | } | |
487 | }; | |
488 | ||
489 | thread.start(); | |
490 | } | |
491 | ||
492 | /** | |
d337369a FC |
493 | * Initialize the provider based on the request. The context is provider |
494 | * specific and will be updated by getNext(). | |
0283f7ff | 495 | * |
948b0607 | 496 | * @param request |
6f4e8ec0 AM |
497 | * The request |
498 | * @return Sn application specific context; null if request can't be | |
499 | * serviced | |
948b0607 | 500 | */ |
6256d8ad | 501 | protected abstract ITmfContext armRequest(ITmfDataRequest request); |
948b0607 | 502 | |
c32744d6 FC |
503 | // /** |
504 | // * Return the next event based on the context supplied. The context | |
505 | // * will be updated for the subsequent read. | |
0283f7ff | 506 | // * |
c32744d6 FC |
507 | // * @param context the trace read context (updated) |
508 | // * @return the event referred to by context | |
509 | // */ | |
510 | // public abstract T getNext(ITmfContext context); | |
948b0607 FC |
511 | |
512 | /** | |
513 | * Checks if the data meets the request completion criteria. | |
0283f7ff | 514 | * |
0d9a6d76 FC |
515 | * @param request the request |
516 | * @param data the data to verify | |
517 | * @param nbRead the number of events read so far | |
518 | * @return true if completion criteria is met | |
948b0607 | 519 | */ |
6256d8ad | 520 | public boolean isCompleted(ITmfDataRequest request, ITmfEvent data, int nbRead) { |
b6be1c3e | 521 | return request.isCompleted() || nbRead >= request.getNbRequested(); |
948b0607 FC |
522 | } |
523 | ||
fc7cd0be AM |
524 | // ------------------------------------------------------------------------ |
525 | // Pass-through's to the request executor | |
526 | // ------------------------------------------------------------------------ | |
527 | ||
528 | /** | |
529 | * @return the shutdown state (i.e. if it is accepting new requests) | |
530 | * @since 2.0 | |
531 | */ | |
532 | protected boolean executorIsShutdown() { | |
533 | return fExecutor.isShutdown(); | |
534 | } | |
535 | ||
536 | /** | |
537 | * @return the termination state | |
538 | * @since 2.0 | |
539 | */ | |
540 | protected boolean executorIsTerminated() { | |
541 | return fExecutor.isTerminated(); | |
542 | } | |
543 | ||
948b0607 FC |
544 | // ------------------------------------------------------------------------ |
545 | // Signal handlers | |
546 | // ------------------------------------------------------------------------ | |
547 | ||
063f0d27 AM |
548 | /** |
549 | * Handler for the start synch signal | |
550 | * | |
551 | * @param signal | |
552 | * Incoming signal | |
553 | */ | |
948b0607 FC |
554 | @TmfSignalHandler |
555 | public void startSynch(TmfStartSynchSignal signal) { | |
556 | synchronized (fLock) { | |
557 | fSignalDepth++; | |
558 | } | |
559 | } | |
560 | ||
063f0d27 AM |
561 | /** |
562 | * Handler for the end synch signal | |
563 | * | |
564 | * @param signal | |
565 | * Incoming signal | |
566 | */ | |
948b0607 FC |
567 | @TmfSignalHandler |
568 | public void endSynch(TmfEndSynchSignal signal) { | |
045df77d | 569 | synchronized (fLock) { |
948b0607 FC |
570 | fSignalDepth--; |
571 | if (fSignalDepth == 0) { | |
572 | fireRequest(); | |
573 | } | |
045df77d | 574 | } |
948b0607 | 575 | } |
8c8bf09f ASL |
576 | |
577 | } |