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a52fde77 AM |
1 | /******************************************************************************* |
2 | * Copyright (c) 2012 Ericsson | |
3 | * Copyright (c) 2010, 2011 École Polytechnique de Montréal | |
4 | * Copyright (c) 2010, 2011 Alexandre Montplaisir <alexandre.montplaisir@gmail.com> | |
5df842b3 | 5 | * |
a52fde77 AM |
6 | * All rights reserved. This program and the accompanying materials are |
7 | * made available under the terms of the Eclipse Public License v1.0 which | |
8 | * accompanies this distribution, and is available at | |
9 | * http://www.eclipse.org/legal/epl-v10.html | |
5df842b3 | 10 | * |
a52fde77 AM |
11 | *******************************************************************************/ |
12 | ||
18ab1d18 | 13 | package org.eclipse.linuxtools.internal.tmf.core.statesystem; |
a52fde77 | 14 | |
8d1346f0 AM |
15 | import java.io.File; |
16 | import java.io.IOException; | |
a52fde77 | 17 | import java.io.PrintWriter; |
8d1346f0 | 18 | import java.util.ArrayList; |
f94a0bac | 19 | import java.util.LinkedList; |
a52fde77 | 20 | import java.util.List; |
16576a7e | 21 | import java.util.concurrent.CountDownLatch; |
a52fde77 | 22 | |
8d1346f0 AM |
23 | import org.eclipse.core.runtime.IProgressMonitor; |
24 | import org.eclipse.core.runtime.NullProgressMonitor; | |
5500a7f0 | 25 | import org.eclipse.linuxtools.internal.tmf.core.Activator; |
6d08acca AM |
26 | import org.eclipse.linuxtools.tmf.core.exceptions.AttributeNotFoundException; |
27 | import org.eclipse.linuxtools.tmf.core.exceptions.StateValueTypeException; | |
28 | import org.eclipse.linuxtools.tmf.core.exceptions.TimeRangeException; | |
8d1346f0 AM |
29 | import org.eclipse.linuxtools.tmf.core.interval.ITmfStateInterval; |
30 | import org.eclipse.linuxtools.tmf.core.interval.TmfStateInterval; | |
f1f86dfb | 31 | import org.eclipse.linuxtools.tmf.core.statesystem.ITmfStateSystemBuilder; |
a52fde77 | 32 | import org.eclipse.linuxtools.tmf.core.statevalue.ITmfStateValue; |
a52fde77 AM |
33 | import org.eclipse.linuxtools.tmf.core.statevalue.TmfStateValue; |
34 | ||
35 | /** | |
8d1346f0 AM |
36 | * This is the core class of the Generic State System. It contains all the |
37 | * methods to build and query a state history. It's exposed externally through | |
38 | * the IStateSystemQuerier and IStateSystemBuilder interfaces, depending if the | |
39 | * user needs read-only access or read-write access. | |
5df842b3 | 40 | * |
8d1346f0 AM |
41 | * When building, DON'T FORGET to call .closeHistory() when you are done |
42 | * inserting intervals, or the storage backend will have no way of knowing it | |
43 | * can close and write itself to disk, and its thread will keep running. | |
5df842b3 | 44 | * |
a52fde77 | 45 | * @author alexmont |
5df842b3 | 46 | * |
a52fde77 | 47 | */ |
f1f86dfb | 48 | public class StateSystem implements ITmfStateSystemBuilder { |
a52fde77 AM |
49 | |
50 | /* References to the inner structures */ | |
8d1346f0 AM |
51 | private final AttributeTree attributeTree; |
52 | private final TransientState transState; | |
53 | private final IStateHistoryBackend backend; | |
a52fde77 | 54 | |
16576a7e AM |
55 | /* Latch tracking if the state history is done building or not */ |
56 | private final CountDownLatch finishedLatch = new CountDownLatch(1); | |
57 | ||
a52fde77 | 58 | /** |
8d1346f0 AM |
59 | * General constructor |
60 | * | |
61 | * @param backend | |
62 | * The "state history storage" backend to use. | |
63 | * @param newFile | |
64 | * Put true if this is a new history started from scratch. It is | |
65 | * used to tell the state system where to get its attribute tree. | |
66 | * @throws IOException | |
67 | * If there was a problem creating the new history file | |
a52fde77 | 68 | */ |
8d1346f0 AM |
69 | public StateSystem(IStateHistoryBackend backend, boolean newFile) |
70 | throws IOException { | |
71 | this.backend = backend; | |
72 | this.transState = new TransientState(backend); | |
a52fde77 | 73 | |
8d1346f0 AM |
74 | if (newFile) { |
75 | attributeTree = new AttributeTree(this); | |
76 | } else { | |
77 | /* We're opening an existing file */ | |
78 | this.attributeTree = new AttributeTree(this, backend.supplyAttributeTreeReader()); | |
79 | transState.setInactive(); | |
16576a7e AM |
80 | finishedLatch.countDown(); /* The history is already built */ |
81 | } | |
82 | } | |
83 | ||
84 | @Override | |
85 | public void waitUntilBuilt() { | |
86 | try { | |
87 | finishedLatch.await(); | |
88 | } catch (InterruptedException e) { | |
89 | e.printStackTrace(); | |
8d1346f0 | 90 | } |
a52fde77 AM |
91 | } |
92 | ||
8d1346f0 AM |
93 | //-------------------------------------------------------------------------- |
94 | // General methods related to the attribute tree | |
95 | //-------------------------------------------------------------------------- | |
96 | ||
97 | /** | |
98 | * Method used by the attribute tree when creating new attributes, to keep | |
99 | * the attribute count in the transient state in sync. | |
100 | */ | |
101 | void addEmptyAttribute() { | |
102 | transState.addEmptyEntry(); | |
103 | } | |
104 | ||
105 | @Override | |
4623f57f AM |
106 | public int getNbAttributes() { |
107 | return attributeTree.getNbAttributes(); | |
108 | } | |
109 | ||
f5295294 AM |
110 | @Override |
111 | public boolean isLastAttribute(int quark) { | |
112 | return (quark == getNbAttributes() - 1) ? true : false; | |
113 | } | |
114 | ||
8d1346f0 AM |
115 | @Override |
116 | public String getAttributeName(int attributeQuark) { | |
117 | return attributeTree.getAttributeName(attributeQuark); | |
118 | } | |
119 | ||
120 | @Override | |
121 | public String getFullAttributePath(int attributeQuark) { | |
122 | return attributeTree.getFullAttributeName(attributeQuark); | |
123 | } | |
124 | ||
125 | //-------------------------------------------------------------------------- | |
126 | // Methods related to the storage backend | |
127 | //-------------------------------------------------------------------------- | |
a52fde77 | 128 | |
8d1346f0 AM |
129 | @Override |
130 | public long getStartTime() { | |
131 | return backend.getStartTime(); | |
132 | } | |
133 | ||
134 | @Override | |
135 | public long getCurrentEndTime() { | |
136 | return backend.getEndTime(); | |
137 | } | |
138 | ||
139 | @Override | |
140 | public void closeHistory(long endTime) throws TimeRangeException { | |
141 | File attributeTreeFile; | |
142 | long attributeTreeFilePos; | |
143 | long realEndTime = endTime; | |
144 | ||
145 | if (realEndTime < backend.getEndTime()) { | |
146 | /* | |
147 | * This can happen (empty nodes pushing the border further, etc.) | |
148 | * but shouldn't be too big of a deal. | |
149 | */ | |
150 | realEndTime = backend.getEndTime(); | |
151 | } | |
152 | transState.closeTransientState(realEndTime); | |
153 | backend.finishedBuilding(realEndTime); | |
154 | ||
155 | attributeTreeFile = backend.supplyAttributeTreeWriterFile(); | |
156 | attributeTreeFilePos = backend.supplyAttributeTreeWriterFilePosition(); | |
157 | if (attributeTreeFile != null) { | |
158 | /* | |
159 | * If null was returned, we simply won't save the attribute tree, | |
160 | * too bad! | |
161 | */ | |
162 | attributeTree.writeSelf(attributeTreeFile, attributeTreeFilePos); | |
163 | } | |
16576a7e | 164 | finishedLatch.countDown(); /* Mark the history as finished building */ |
8d1346f0 AM |
165 | } |
166 | ||
167 | //-------------------------------------------------------------------------- | |
168 | // Quark-retrieving methods | |
169 | //-------------------------------------------------------------------------- | |
170 | ||
171 | @Override | |
a52fde77 AM |
172 | public int getQuarkAbsolute(String... attribute) |
173 | throws AttributeNotFoundException { | |
174 | return attributeTree.getQuarkDontAdd(-1, attribute); | |
175 | } | |
176 | ||
8d1346f0 | 177 | @Override |
a52fde77 AM |
178 | public int getQuarkAbsoluteAndAdd(String... attribute) { |
179 | return attributeTree.getQuarkAndAdd(-1, attribute); | |
180 | } | |
181 | ||
8d1346f0 | 182 | @Override |
a52fde77 AM |
183 | public int getQuarkRelative(int startingNodeQuark, String... subPath) |
184 | throws AttributeNotFoundException { | |
185 | return attributeTree.getQuarkDontAdd(startingNodeQuark, subPath); | |
186 | } | |
187 | ||
8d1346f0 | 188 | @Override |
a52fde77 AM |
189 | public int getQuarkRelativeAndAdd(int startingNodeQuark, String... subPath) { |
190 | return attributeTree.getQuarkAndAdd(startingNodeQuark, subPath); | |
191 | } | |
192 | ||
8d1346f0 | 193 | @Override |
c66426fd | 194 | public List<Integer> getSubAttributes(int quark, boolean recursive) |
0a9de3d2 | 195 | throws AttributeNotFoundException { |
c66426fd | 196 | return attributeTree.getSubAttributes(quark, recursive); |
0a9de3d2 AM |
197 | } |
198 | ||
8d1346f0 | 199 | @Override |
f94a0bac AM |
200 | public List<Integer> getQuarks(String... pattern) { |
201 | List<Integer> quarks = new LinkedList<Integer>(); | |
202 | List<String> prefix = new LinkedList<String>(); | |
203 | List<String> suffix = new LinkedList<String>(); | |
204 | boolean split = false; | |
205 | String[] prefixStr; | |
206 | String[] suffixStr; | |
207 | List<Integer> directChildren; | |
208 | int startingAttribute; | |
209 | ||
210 | /* Fill the "prefix" and "suffix" parts of the pattern around the '*' */ | |
211 | for (String entry : pattern) { | |
212 | if (entry.equals("*")) { //$NON-NLS-1$ | |
213 | if (split) { | |
214 | /* | |
215 | * Split was already true? This means there was more than | |
216 | * one wildcard. This is not supported, return an empty | |
217 | * list. | |
218 | */ | |
219 | return quarks; | |
220 | } | |
221 | split = true; | |
222 | continue; | |
223 | } | |
224 | ||
225 | if (split) { | |
226 | suffix.add(entry); | |
227 | } else { | |
228 | prefix.add(entry); | |
229 | } | |
230 | } | |
231 | prefixStr = prefix.toArray(new String[prefix.size()]); | |
232 | suffixStr = suffix.toArray(new String[suffix.size()]); | |
233 | ||
234 | /* | |
235 | * If there was no wildcard, we'll only return the one matching | |
236 | * attribute, if there is one. | |
237 | */ | |
238 | if (split == false) { | |
239 | int quark; | |
240 | try { | |
241 | quark = getQuarkAbsolute(prefixStr); | |
242 | } catch (AttributeNotFoundException e) { | |
243 | /* It's fine, we'll just return the empty List */ | |
244 | return quarks; | |
245 | } | |
246 | quarks.add(quark); | |
247 | return quarks; | |
248 | } | |
249 | ||
250 | try { | |
251 | if (prefix.size() == 0) { | |
252 | /* | |
253 | * If 'prefix' is empty, this means the wildcard was the first | |
254 | * element. Look for the root node's sub-attributes. | |
255 | */ | |
256 | startingAttribute = -1; | |
257 | } else { | |
258 | startingAttribute = getQuarkAbsolute(prefixStr); | |
259 | } | |
260 | directChildren = attributeTree.getSubAttributes(startingAttribute, | |
261 | false); | |
262 | } catch (AttributeNotFoundException e) { | |
263 | /* That attribute path did not exist, return the empty array */ | |
264 | return quarks; | |
265 | } | |
266 | ||
267 | /* | |
268 | * Iterate of all the sub-attributes, and only keep those who match the | |
269 | * 'suffix' part of the initial pattern. | |
270 | */ | |
271 | for (int childQuark : directChildren) { | |
272 | int matchingQuark; | |
273 | try { | |
274 | matchingQuark = getQuarkRelative(childQuark, suffixStr); | |
275 | } catch (AttributeNotFoundException e) { | |
276 | continue; | |
277 | } | |
278 | quarks.add(matchingQuark); | |
279 | } | |
280 | ||
281 | return quarks; | |
282 | } | |
283 | ||
8d1346f0 AM |
284 | //-------------------------------------------------------------------------- |
285 | // Methods related to insertions in the history | |
286 | //-------------------------------------------------------------------------- | |
a52fde77 | 287 | |
8d1346f0 | 288 | @Override |
a52fde77 | 289 | public void modifyAttribute(long t, ITmfStateValue value, int attributeQuark) |
7e0b2b56 AM |
290 | throws TimeRangeException, AttributeNotFoundException, |
291 | StateValueTypeException { | |
a52fde77 AM |
292 | transState.processStateChange(t, value, attributeQuark); |
293 | } | |
294 | ||
8d1346f0 | 295 | @Override |
a52fde77 AM |
296 | public void incrementAttribute(long t, int attributeQuark) |
297 | throws StateValueTypeException, TimeRangeException, | |
298 | AttributeNotFoundException { | |
299 | int prevValue = queryOngoingState(attributeQuark).unboxInt(); | |
280bbdbb AM |
300 | if (prevValue == -1) { |
301 | /* if the attribute was previously null, start counting at 0 */ | |
302 | prevValue = 0; | |
303 | } | |
a52fde77 AM |
304 | modifyAttribute(t, TmfStateValue.newValueInt(prevValue + 1), |
305 | attributeQuark); | |
306 | } | |
307 | ||
8d1346f0 | 308 | @Override |
a52fde77 AM |
309 | public void pushAttribute(long t, ITmfStateValue value, int attributeQuark) |
310 | throws TimeRangeException, AttributeNotFoundException, | |
311 | StateValueTypeException { | |
a52fde77 AM |
312 | Integer stackDepth = 0; |
313 | int subAttributeQuark; | |
314 | ITmfStateValue previousSV = transState.getOngoingStateValue(attributeQuark); | |
315 | ||
316 | if (previousSV.isNull()) { | |
317 | /* | |
318 | * If the StateValue was null, this means this is the first time we | |
319 | * use this attribute. Leave stackDepth at 0. | |
320 | */ | |
321 | } else if (previousSV.getType() == 0) { | |
322 | /* Previous value was an integer, all is good, use it */ | |
323 | stackDepth = previousSV.unboxInt(); | |
a52fde77 AM |
324 | } else { |
325 | /* Previous state of this attribute was another type? Not good! */ | |
90a25ebe AM |
326 | throw new StateValueTypeException(); |
327 | } | |
328 | ||
329 | if (stackDepth >= 10) { | |
330 | /* | |
331 | * Limit stackDepth to 10, to avoid having Attribute Trees grow out | |
332 | * of control due to buggy insertions | |
333 | */ | |
334 | String message = "Stack limit reached, not pushing"; //$NON-NLS-1$ | |
335 | throw new AttributeNotFoundException(message); | |
a52fde77 AM |
336 | } |
337 | ||
338 | stackDepth++; | |
5896eb76 | 339 | subAttributeQuark = getQuarkRelativeAndAdd(attributeQuark, stackDepth.toString()); |
a52fde77 | 340 | |
5896eb76 | 341 | modifyAttribute(t, TmfStateValue.newValueInt(stackDepth), attributeQuark); |
90a25ebe | 342 | modifyAttribute(t, value, subAttributeQuark); |
a52fde77 AM |
343 | } |
344 | ||
8d1346f0 | 345 | @Override |
5896eb76 | 346 | public ITmfStateValue popAttribute(long t, int attributeQuark) |
a52fde77 AM |
347 | throws AttributeNotFoundException, TimeRangeException, |
348 | StateValueTypeException { | |
e2eac108 | 349 | /* These are the state values of the stack-attribute itself */ |
5896eb76 | 350 | ITmfStateValue previousSV = queryOngoingState(attributeQuark); |
a52fde77 AM |
351 | |
352 | if (previousSV.isNull()) { | |
e2eac108 AM |
353 | /* |
354 | * Trying to pop an empty stack. This often happens at the start of | |
355 | * traces, for example when we see a syscall_exit, without having | |
356 | * the corresponding syscall_entry in the trace. Just ignore | |
357 | * silently. | |
358 | */ | |
5896eb76 | 359 | return null; |
90a25ebe | 360 | } |
e2eac108 | 361 | if (previousSV.getType() != ITmfStateValue.TYPE_INTEGER) { |
a52fde77 | 362 | /* |
90a25ebe AM |
363 | * The existing value was a string, this doesn't look like a valid |
364 | * stack attribute. | |
a52fde77 | 365 | */ |
90a25ebe | 366 | throw new StateValueTypeException(); |
a52fde77 AM |
367 | } |
368 | ||
5896eb76 | 369 | Integer stackDepth = previousSV.unboxInt(); |
90a25ebe | 370 | |
e2eac108 | 371 | if (stackDepth <= 0) { |
a52fde77 | 372 | /* This on the other hand should not happen... */ |
e2eac108 AM |
373 | /* the case where == -1 was handled previously by .isNull() */ |
374 | String message = "A top-level stack attribute cannot " + //$NON-NLS-1$ | |
375 | "have a value of 0 or less (except -1/null)."; //$NON-NLS-1$ | |
90a25ebe | 376 | throw new StateValueTypeException(message); |
a52fde77 AM |
377 | } |
378 | ||
e2eac108 | 379 | /* The attribute should already exist at this point */ |
5896eb76 AM |
380 | int subAttributeQuark = getQuarkRelative(attributeQuark, stackDepth.toString()); |
381 | ITmfStateValue poppedValue = queryOngoingState(subAttributeQuark); | |
a52fde77 | 382 | |
e2eac108 AM |
383 | /* Update the state value of the stack-attribute */ |
384 | ITmfStateValue nextSV; | |
385 | if (--stackDepth == 0 ) { | |
386 | /* Jump over "0" and store -1 (a null state value) */ | |
387 | nextSV = TmfStateValue.nullValue(); | |
388 | } else { | |
389 | nextSV = TmfStateValue.newValueInt(stackDepth); | |
390 | } | |
391 | modifyAttribute(t, nextSV, attributeQuark); | |
392 | ||
393 | /* Delete the sub-attribute that contained the user's state value */ | |
a52fde77 | 394 | removeAttribute(t, subAttributeQuark); |
e2eac108 | 395 | |
5896eb76 | 396 | return poppedValue; |
a52fde77 AM |
397 | } |
398 | ||
8d1346f0 | 399 | @Override |
a52fde77 AM |
400 | public void removeAttribute(long t, int attributeQuark) |
401 | throws TimeRangeException, AttributeNotFoundException { | |
402 | assert (attributeQuark >= 0); | |
c66426fd AM |
403 | List<Integer> childAttributes; |
404 | ||
405 | /* | |
406 | * "Nullify our children first, recursively. We pass 'false' because we | |
407 | * handle the recursion ourselves. | |
408 | */ | |
409 | childAttributes = attributeTree.getSubAttributes(attributeQuark, false); | |
a52fde77 AM |
410 | for (Integer childNodeQuark : childAttributes) { |
411 | assert (attributeQuark != childNodeQuark); | |
412 | removeAttribute(t, childNodeQuark); | |
413 | } | |
414 | /* Nullify ourselves */ | |
7e0b2b56 AM |
415 | try { |
416 | transState.processStateChange(t, TmfStateValue.nullValue(), | |
417 | attributeQuark); | |
418 | } catch (StateValueTypeException e) { | |
50678114 AM |
419 | /* |
420 | * Will not happen since we're inserting null values only, but poor | |
421 | * compiler has no way of knowing this... | |
7e0b2b56 AM |
422 | */ |
423 | e.printStackTrace(); | |
424 | } | |
a52fde77 AM |
425 | } |
426 | ||
8d1346f0 AM |
427 | //-------------------------------------------------------------------------- |
428 | // "Current" query/update methods | |
429 | //-------------------------------------------------------------------------- | |
a52fde77 | 430 | |
8d1346f0 | 431 | @Override |
a52fde77 AM |
432 | public ITmfStateValue queryOngoingState(int attributeQuark) |
433 | throws AttributeNotFoundException { | |
434 | return transState.getOngoingStateValue(attributeQuark); | |
435 | } | |
436 | ||
8d1346f0 | 437 | @Override |
a52fde77 AM |
438 | public void updateOngoingState(ITmfStateValue newValue, int attributeQuark) |
439 | throws AttributeNotFoundException { | |
440 | transState.changeOngoingStateValue(attributeQuark, newValue); | |
441 | } | |
442 | ||
8d1346f0 AM |
443 | |
444 | ||
445 | //-------------------------------------------------------------------------- | |
446 | // Regular query methods (sent to the back-end) | |
447 | //-------------------------------------------------------------------------- | |
448 | ||
449 | @Override | |
450 | public synchronized List<ITmfStateInterval> queryFullState(long t) | |
451 | throws TimeRangeException { | |
452 | List<ITmfStateInterval> stateInfo = new ArrayList<ITmfStateInterval>( | |
453 | attributeTree.getNbAttributes()); | |
454 | ||
455 | /* Bring the size of the array to the current number of attributes */ | |
456 | for (int i = 0; i < attributeTree.getNbAttributes(); i++) { | |
457 | stateInfo.add(null); | |
458 | } | |
459 | ||
460 | /* Query the storage backend */ | |
461 | backend.doQuery(stateInfo, t); | |
462 | ||
463 | /* | |
464 | * If we are currently building the history, also query the "ongoing" | |
465 | * states for stuff that might not yet be written to the history. | |
466 | */ | |
467 | if (transState.isActive()) { | |
468 | transState.doQuery(stateInfo, t); | |
469 | } | |
470 | ||
471 | /* | |
472 | * We should have previously inserted an interval for every attribute. | |
473 | * If we do happen do see a 'null' object here, just replace it with a a | |
474 | * dummy internal with a null value, to avoid NPE's further up. | |
475 | */ | |
476 | for (int i = 0; i < stateInfo.size(); i++) { | |
477 | if (stateInfo.get(i) == null) { | |
478 | //logMissingInterval(i, t); | |
479 | stateInfo.set(i, new TmfStateInterval(t, t, i, TmfStateValue.nullValue())); | |
480 | } | |
481 | } | |
482 | return stateInfo; | |
50678114 AM |
483 | } |
484 | ||
8d1346f0 AM |
485 | @Override |
486 | public ITmfStateInterval querySingleState(long t, int attributeQuark) | |
487 | throws AttributeNotFoundException, TimeRangeException { | |
488 | ITmfStateInterval ret; | |
489 | ||
490 | if (transState.hasInfoAboutStateOf(t, attributeQuark)) { | |
491 | ret = transState.getOngoingInterval(attributeQuark); | |
492 | } else { | |
493 | ret = backend.doSingularQuery(t, attributeQuark); | |
494 | } | |
495 | ||
496 | /* | |
497 | * Return a fake interval if we could not find anything in the history. | |
498 | * We do NOT want to return 'null' here. | |
499 | */ | |
500 | if (ret == null) { | |
501 | //logMissingInterval(attributeQuark, t); | |
502 | return new TmfStateInterval(t, this.getCurrentEndTime(), | |
503 | attributeQuark, TmfStateValue.nullValue()); | |
504 | } | |
505 | return ret; | |
506 | } | |
507 | ||
4bff6e6e AM |
508 | @Override |
509 | public ITmfStateInterval querySingleStackTop(long t, int stackAttributeQuark) | |
510 | throws StateValueTypeException, AttributeNotFoundException, | |
511 | TimeRangeException { | |
512 | Integer curStackDepth = querySingleState(t, stackAttributeQuark).getStateValue().unboxInt(); | |
513 | ||
514 | if (curStackDepth == -1) { | |
515 | /* There is nothing stored in this stack at this moment */ | |
516 | return null; | |
517 | } else if (curStackDepth < -1 || curStackDepth == 0) { | |
518 | /* | |
519 | * This attribute is an integer attribute, but it doesn't seem like | |
520 | * it's used as a stack-attribute... | |
521 | */ | |
522 | throw new StateValueTypeException(); | |
523 | } | |
524 | ||
525 | int subAttribQuark = getQuarkRelative(stackAttributeQuark, curStackDepth.toString()); | |
526 | ITmfStateInterval ret = querySingleState(t, subAttribQuark); | |
527 | return ret; | |
528 | } | |
529 | ||
8d1346f0 AM |
530 | @Override |
531 | public List<ITmfStateInterval> queryHistoryRange(int attributeQuark, | |
532 | long t1, long t2) throws TimeRangeException, | |
533 | AttributeNotFoundException { | |
534 | List<ITmfStateInterval> intervals; | |
535 | ITmfStateInterval currentInterval; | |
536 | long ts, tEnd; | |
537 | ||
538 | /* Make sure the time range makes sense */ | |
539 | if (t2 <= t1) { | |
540 | throw new TimeRangeException(); | |
541 | } | |
542 | ||
543 | /* Set the actual, valid end time of the range query */ | |
544 | if (t2 > this.getCurrentEndTime()) { | |
545 | tEnd = this.getCurrentEndTime(); | |
546 | } else { | |
547 | tEnd = t2; | |
548 | } | |
549 | ||
550 | /* Get the initial state at time T1 */ | |
551 | intervals = new ArrayList<ITmfStateInterval>(); | |
552 | currentInterval = querySingleState(t1, attributeQuark); | |
553 | intervals.add(currentInterval); | |
554 | ||
555 | /* Get the following state changes */ | |
556 | ts = currentInterval.getEndTime(); | |
557 | while (ts != -1 && ts < tEnd) { | |
558 | ts++; /* To "jump over" to the next state in the history */ | |
559 | currentInterval = querySingleState(ts, attributeQuark); | |
560 | intervals.add(currentInterval); | |
561 | ts = currentInterval.getEndTime(); | |
562 | } | |
563 | return intervals; | |
564 | } | |
565 | ||
566 | @Override | |
567 | public List<ITmfStateInterval> queryHistoryRange(int attributeQuark, | |
b5a8d0cc AM |
568 | long t1, long t2, long resolution, IProgressMonitor monitor) |
569 | throws TimeRangeException, AttributeNotFoundException { | |
8d1346f0 AM |
570 | List<ITmfStateInterval> intervals; |
571 | ITmfStateInterval currentInterval; | |
572 | long ts, tEnd; | |
573 | ||
b5a8d0cc AM |
574 | if (monitor == null) { |
575 | monitor = new NullProgressMonitor(); | |
576 | } | |
577 | ||
8d1346f0 AM |
578 | /* Make sure the time range makes sense */ |
579 | if (t2 < t1 || resolution <= 0) { | |
580 | throw new TimeRangeException(); | |
581 | } | |
582 | ||
583 | /* Set the actual, valid end time of the range query */ | |
584 | if (t2 > this.getCurrentEndTime()) { | |
585 | tEnd = this.getCurrentEndTime(); | |
586 | } else { | |
587 | tEnd = t2; | |
588 | } | |
589 | ||
590 | /* Get the initial state at time T1 */ | |
591 | intervals = new ArrayList<ITmfStateInterval>(); | |
592 | currentInterval = querySingleState(t1, attributeQuark); | |
593 | intervals.add(currentInterval); | |
594 | ||
595 | /* | |
596 | * Iterate over the "resolution points". We skip unneeded queries in the | |
597 | * case the current interval is longer than the resolution. | |
598 | */ | |
599 | for (ts = t1; (currentInterval.getEndTime() != -1) && (ts < tEnd); | |
600 | ts += resolution) { | |
601 | if (monitor.isCanceled()) { | |
602 | return intervals; | |
603 | } | |
604 | if (ts <= currentInterval.getEndTime()) { | |
605 | continue; | |
606 | } | |
607 | currentInterval = querySingleState(ts, attributeQuark); | |
608 | intervals.add(currentInterval); | |
609 | } | |
610 | ||
611 | /* Add the interval at t2, if it wasn't included already. */ | |
612 | if (currentInterval.getEndTime() < tEnd) { | |
613 | currentInterval = querySingleState(tEnd, attributeQuark); | |
614 | intervals.add(currentInterval); | |
615 | } | |
616 | return intervals; | |
617 | } | |
618 | ||
619 | //-------------------------------------------------------------------------- | |
620 | // Debug methods | |
621 | //-------------------------------------------------------------------------- | |
622 | ||
623 | static void logMissingInterval(int attribute, long timestamp) { | |
5500a7f0 | 624 | Activator.logInfo("No data found in history for attribute " + //$NON-NLS-1$ |
8d1346f0 AM |
625 | attribute + " at time " + timestamp + //$NON-NLS-1$ |
626 | ", returning dummy interval"); //$NON-NLS-1$ | |
a52fde77 AM |
627 | } |
628 | ||
629 | /** | |
630 | * Print out the contents of the inner structures. | |
5df842b3 | 631 | * |
a52fde77 AM |
632 | * @param writer |
633 | * The PrintWriter in which to print the output | |
634 | */ | |
635 | public void debugPrint(PrintWriter writer) { | |
636 | attributeTree.debugPrint(writer); | |
637 | transState.debugPrint(writer); | |
8d1346f0 | 638 | backend.debugPrint(writer); |
a52fde77 AM |
639 | } |
640 | ||
8d1346f0 | 641 | } |