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5d10d135 ASL |
1 | /******************************************************************************* |
2 | * Copyright (c) 2009 Ericsson | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * William Bourque (wbourque@gmail.com) - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.lttng.trace; | |
14 | ||
28b94d61 FC |
15 | import java.util.HashMap; |
16 | import java.util.Iterator; | |
17 | import java.util.Vector; | |
18 | ||
3fbd810a | 19 | import org.eclipse.linuxtools.lttng.LttngException; |
5d10d135 ASL |
20 | import org.eclipse.linuxtools.lttng.event.LttngEvent; |
21 | import org.eclipse.linuxtools.lttng.event.LttngEventContent; | |
22 | import org.eclipse.linuxtools.lttng.event.LttngEventReference; | |
28b94d61 | 23 | import org.eclipse.linuxtools.lttng.event.LttngEventSource; |
5d10d135 | 24 | import org.eclipse.linuxtools.lttng.event.LttngEventType; |
9f584e4c | 25 | import org.eclipse.linuxtools.lttng.event.LttngLocation; |
5d10d135 ASL |
26 | import org.eclipse.linuxtools.lttng.event.LttngTimestamp; |
27 | import org.eclipse.linuxtools.lttng.jni.JniEvent; | |
28b94d61 | 28 | import org.eclipse.linuxtools.lttng.jni.JniMarker; |
5d10d135 | 29 | import org.eclipse.linuxtools.lttng.jni.JniTrace; |
28b94d61 | 30 | import org.eclipse.linuxtools.lttng.jni.JniTracefile; |
004f471b | 31 | import org.eclipse.linuxtools.lttng.jni.common.JniTime; |
550d787e | 32 | import org.eclipse.linuxtools.lttng.jni.exception.JniException; |
004f471b | 33 | import org.eclipse.linuxtools.lttng.jni.factory.JniTraceFactory; |
5d10d135 ASL |
34 | import org.eclipse.linuxtools.tmf.event.TmfTimeRange; |
35 | import org.eclipse.linuxtools.tmf.event.TmfTimestamp; | |
82e04272 | 36 | import org.eclipse.linuxtools.tmf.trace.ITmfContext; |
9f584e4c | 37 | import org.eclipse.linuxtools.tmf.trace.ITmfLocation; |
64fe8e8a | 38 | import org.eclipse.linuxtools.tmf.trace.TmfCheckpoint; |
9f584e4c | 39 | import org.eclipse.linuxtools.tmf.trace.TmfContext; |
5d10d135 | 40 | import org.eclipse.linuxtools.tmf.trace.TmfTrace; |
5d10d135 | 41 | |
3fbd810a FC |
42 | class LTTngTraceException extends LttngException { |
43 | static final long serialVersionUID = -1636648737081868146L; | |
44 | ||
45 | public LTTngTraceException(String errMsg) { | |
64fe8e8a FC |
46 | super(errMsg); |
47 | } | |
3fbd810a FC |
48 | } |
49 | ||
5d10d135 | 50 | /** |
64fe8e8a FC |
51 | * <b><u>LTTngTrace</u></b> |
52 | * <p> | |
07d9e2ee | 53 | * |
5d10d135 ASL |
54 | * LTTng trace implementation. It accesses the C trace handling library |
55 | * (seeking, reading and parsing) through the JNI component. | |
56 | */ | |
e31e01e8 | 57 | public class LTTngTrace extends TmfTrace<LttngEvent> { |
9b635e61 | 58 | |
64fe8e8a FC |
59 | public static boolean PrintDebug = false; |
60 | public static boolean UniqueEvent = true; | |
61 | ||
62 | private final static boolean SHOW_LTT_DEBUG_DEFAULT = false; | |
63 | private final static boolean IS_PARSING_NEEDED_DEFAULT = !UniqueEvent; | |
64 | private final static int CHECKPOINT_PAGE_SIZE = 1000; | |
65 | ||
66 | // Reference to our JNI trace | |
67 | private JniTrace currentJniTrace = null; | |
68 | ||
69 | // *** | |
70 | // UNHACKED : We can no longer do that because TCF need to maintain several | |
71 | // events at once. | |
72 | // This is very slow to do so in LTTng, this has to be temporary. | |
73 | // *** HACK *** | |
74 | // To save time, we will declare all component of the LttngEvent during the | |
75 | // construction of the trace | |
76 | // Then, while reading the trace, we will just SET the values instead of | |
77 | // declaring new object | |
78 | // *** | |
79 | LttngTimestamp eventTimestamp = null; | |
80 | LttngEventSource eventSource = null; | |
81 | LttngEventContent eventContent = null; | |
82 | LttngEventReference eventReference = null; | |
83 | ||
84 | // The actual event | |
85 | LttngEvent currentLttngEvent = null; | |
86 | ||
87 | // The current location | |
88 | LttngLocation previousLocation = null; | |
89 | ||
90 | LttngEventType eventType = null; | |
91 | // Hashmap of the possible types of events (Tracefile/CPU/Marker in the JNI) | |
92 | HashMap<Integer, LttngEventType> traceTypes = null; | |
93 | // This vector will be used to quickly find a marker name from a position | |
94 | Vector<Integer> traceTypeNames = null; | |
95 | ||
96 | /** | |
97 | * Default Constructor. | |
98 | * <p> | |
99 | * | |
100 | * @param path | |
101 | * Path to a <b>directory</b> that contain an LTTng trace. | |
102 | * | |
103 | * @exception Exception | |
104 | * (most likely LTTngTraceException or FileNotFoundException) | |
105 | */ | |
106 | public LTTngTrace(String path) throws Exception { | |
107 | // Call with "wait for completion" true and "skip indexing" false | |
108 | this(path, true, false); | |
109 | } | |
110 | ||
111 | /** | |
112 | * Constructor, with control over the indexing. | |
113 | * <p> | |
114 | * | |
115 | * @param path | |
116 | * Path to a <b>directory</b> that contain an LTTng trace. | |
117 | * @param waitForCompletion | |
118 | * Should we wait for indexign to complete before moving on. | |
119 | * | |
120 | * @exception Exception | |
121 | * (most likely LTTngTraceException or FileNotFoundException) | |
122 | */ | |
123 | public LTTngTrace(String path, boolean waitForCompletion) throws Exception { | |
124 | // Call with "skip indexing" false | |
125 | this(path, waitForCompletion, false); | |
126 | } | |
127 | ||
128 | /** | |
129 | * Default constructor, with control over the indexing and possibility to | |
130 | * bypass indexation | |
131 | * <p> | |
132 | * | |
133 | * @param path | |
134 | * Path to a <b>directory</b> that contain an LTTng trace. | |
135 | * @param waitForCompletion | |
136 | * Should we wait for indexign to complete before moving on. | |
137 | * @param bypassIndexing | |
138 | * Should we bypass indexing completly? This is should only be | |
139 | * useful for unit testing. | |
140 | * | |
141 | * @exception Exception | |
142 | * (most likely LTTngTraceException or FileNotFoundException) | |
143 | * | |
144 | */ | |
145 | public LTTngTrace(String path, boolean waitForCompletion, | |
146 | boolean bypassIndexing) throws Exception { | |
147 | super(path, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE); | |
148 | try { | |
149 | currentJniTrace = JniTraceFactory.getJniTrace(path, | |
150 | SHOW_LTT_DEBUG_DEFAULT); | |
151 | } catch (Exception e) { | |
152 | throw new LTTngTraceException(e.getMessage()); | |
153 | } | |
154 | ||
155 | // Export all the event types from the JNI side | |
156 | traceTypes = new HashMap<Integer, LttngEventType>(); | |
157 | traceTypeNames = new Vector<Integer>(); | |
158 | initialiseEventTypes(currentJniTrace); | |
159 | ||
160 | // *** VERIFY *** | |
161 | // Verify that all those "default constructor" are safe to use | |
162 | eventTimestamp = new LttngTimestamp(); | |
163 | eventSource = new LttngEventSource(); | |
164 | eventType = new LttngEventType(); | |
165 | eventContent = new LttngEventContent(currentLttngEvent); | |
166 | eventReference = new LttngEventReference(this.getName()); | |
167 | ||
168 | // Create the skeleton event | |
169 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, | |
170 | eventType, eventContent, eventReference, null); | |
171 | ||
172 | // Create a new current location | |
173 | previousLocation = new LttngLocation(); | |
174 | ||
175 | // Set the currentEvent to the eventContent | |
176 | eventContent.setEvent(currentLttngEvent); | |
177 | ||
178 | // // Bypass indexing if asked | |
179 | // if ( bypassIndexing == false ) { | |
180 | // indexTrace(true); | |
181 | // } | |
182 | // else { | |
183 | // Even if we don't have any index, set ONE checkpoint | |
184 | // fCheckpoints.add(new TmfCheckpoint(new LttngTimestamp(0L) , new | |
185 | // LttngLocation() ) ); | |
186 | ||
187 | // Set the time range of the trace | |
188 | TmfContext context = seekLocation(null); | |
189 | LttngEvent event = getNextEvent(context); | |
190 | LttngTimestamp startTime = new LttngTimestamp(event.getTimestamp()); | |
191 | LttngTimestamp endTime = new LttngTimestamp(currentJniTrace | |
192 | .getEndTime().getTime()); | |
193 | ||
194 | setTimeRange(new TmfTimeRange(startTime, endTime)); | |
195 | ||
196 | } | |
197 | ||
198 | /* | |
199 | * Copy constructor is forbidden for LttngEvenmStream | |
200 | */ | |
201 | public LTTngTrace(LTTngTrace oldTrace) throws Exception { | |
202 | this(oldTrace.getPath(), false, true); | |
203 | ||
204 | // *** VERIFY *** | |
205 | // Is this safe? | |
206 | this.fCheckpoints = oldTrace.fCheckpoints; | |
207 | ||
208 | /* | |
209 | * // This would only work if the index is already done | |
210 | * this.fCheckpoints = new Vector<TmfCheckpoint>( | |
211 | * oldTrace.fCheckpoints.size() ); for (int x = 0; | |
212 | * x<oldTrace.fCheckpoints.size(); x++){ TmfCheckpoint tmpCheckPoint = | |
213 | * oldTrace.fCheckpoints.get(x); this.fCheckpoints.add( new | |
214 | * TmfCheckpoint(tmpCheckPoint.getTimestamp(), | |
215 | * tmpCheckPoint.getLocation()) ); } | |
216 | */ | |
217 | ||
218 | // Set the start time of the trace | |
219 | setTimeRange(new TmfTimeRange(new LttngTimestamp( | |
220 | oldTrace.getStartTime()), new LttngTimestamp( | |
221 | oldTrace.getEndTime()))); | |
222 | } | |
223 | ||
224 | ||
369aca6e | 225 | |
d4011df2 FC |
226 | @Override |
227 | public LTTngTrace createTraceCopy() { | |
369aca6e WB |
228 | LTTngTrace returnedTrace = null; |
229 | ||
230 | try { | |
231 | returnedTrace = new LTTngTrace(this); | |
232 | } | |
233 | catch (Exception e) { | |
234 | System.out.println("ERROR : Could not create LTTngTrace copy (createTraceCopy).\nError is : " + e.getStackTrace()); | |
235 | } | |
236 | ||
237 | return returnedTrace; | |
9aae0442 ASL |
238 | } |
239 | ||
550d787e | 240 | @Override |
9b635e61 | 241 | public synchronized LTTngTrace clone() { |
550d787e FC |
242 | LTTngTrace clone = null; |
243 | try { | |
244 | clone = (LTTngTrace) super.clone(); | |
245 | try { | |
246 | clone.currentJniTrace = JniTraceFactory.getJniTrace(getPath(), SHOW_LTT_DEBUG_DEFAULT); | |
247 | } catch (JniException e) { | |
64fe8e8a | 248 | // e.printStackTrace(); |
550d787e | 249 | } |
64fe8e8a FC |
250 | |
251 | // Export all the event types from the JNI side | |
252 | clone.traceTypes = new HashMap<Integer, LttngEventType>(); | |
253 | clone.traceTypeNames = new Vector<Integer>(); | |
550d787e | 254 | clone.initialiseEventTypes(clone.currentJniTrace); |
64fe8e8a FC |
255 | |
256 | // Verify that all those "default constructor" are safe to use | |
257 | clone.eventTimestamp = new LttngTimestamp(); | |
258 | clone.eventSource = new LttngEventSource(); | |
259 | clone.eventType = new LttngEventType(); | |
260 | clone.eventContent = new LttngEventContent(clone.currentLttngEvent); | |
261 | clone.eventReference = new LttngEventReference(this.getName()); | |
262 | ||
263 | // Create the skeleton event | |
264 | clone.currentLttngEvent = new LttngEvent(this, | |
265 | clone.eventTimestamp, clone.eventSource, clone.eventType, | |
266 | clone.eventContent, clone.eventReference, null); | |
267 | ||
268 | // Create a new current location | |
550d787e | 269 | clone.previousLocation = new LttngLocation(); |
64fe8e8a FC |
270 | |
271 | // Set the currentEvent to the eventContent | |
550d787e | 272 | clone.eventContent.setEvent(clone.currentLttngEvent); |
550d787e | 273 | |
64fe8e8a FC |
274 | // Set the start time of the trace |
275 | setTimeRange(new TmfTimeRange(new LttngTimestamp( | |
276 | clone.currentJniTrace.getStartTime().getTime()), | |
277 | new LttngTimestamp(clone.currentJniTrace.getEndTime() | |
278 | .getTime()))); | |
279 | } catch (CloneNotSupportedException e) { | |
280 | } | |
281 | ||
282 | return clone; | |
283 | } | |
284 | ||
285 | /* | |
286 | * Fill out the HashMap with "Type" (Tracefile/Marker) | |
287 | * | |
288 | * This should be called at construction once the trace is open | |
289 | */ | |
290 | private void initialiseEventTypes(JniTrace trace) { | |
291 | // Work variables | |
292 | LttngEventType tmpType = null; | |
293 | String[] markerFieldsLabels = null; | |
294 | ||
295 | String newTracefileKey = null; | |
296 | Integer newMarkerKey = null; | |
297 | ||
298 | JniTracefile newTracefile = null; | |
299 | JniMarker newMarker = null; | |
300 | ||
301 | // First, obtain an iterator on TRACEFILES of owned by the TRACE | |
302 | Iterator<String> tracefileItr = trace.getTracefilesMap().keySet() | |
303 | .iterator(); | |
304 | while (tracefileItr.hasNext()) { | |
305 | newTracefileKey = tracefileItr.next(); | |
306 | newTracefile = trace.getTracefilesMap().get(newTracefileKey); | |
307 | ||
308 | // From the TRACEFILE read, obtain its MARKER | |
309 | Iterator<Integer> markerItr = newTracefile.getTracefileMarkersMap() | |
310 | .keySet().iterator(); | |
311 | while (markerItr.hasNext()) { | |
312 | newMarkerKey = markerItr.next(); | |
313 | newMarker = newTracefile.getTracefileMarkersMap().get( | |
314 | newMarkerKey); | |
315 | ||
316 | // From the MARKER we can obtain the MARKERFIELDS keys (i.e. | |
317 | // labels) | |
318 | markerFieldsLabels = newMarker | |
319 | .getMarkerFieldsHashMap() | |
320 | .keySet() | |
321 | .toArray( | |
322 | new String[newMarker.getMarkerFieldsHashMap() | |
323 | .size()]); | |
324 | tmpType = new LttngEventType(newTracefile.getTracefileName(), | |
325 | newTracefile.getCpuNumber(), newMarker.getName(), | |
326 | markerFieldsLabels); | |
327 | ||
328 | // Add the type to the map/vector | |
329 | addEventTypeToMap(tmpType); | |
330 | } | |
331 | } | |
332 | } | |
333 | ||
334 | /* | |
335 | * Add a new type to the HashMap | |
336 | * | |
337 | * As the hashmap use a key format that is a bit dangerous to use, we should | |
338 | * always add using this function. | |
339 | */ | |
340 | private void addEventTypeToMap(LttngEventType newEventType) { | |
341 | int newTypeKey = EventTypeKey.getEventTypeHash(newEventType); | |
342 | ||
343 | this.traceTypes.put(newTypeKey, newEventType); | |
344 | this.traceTypeNames.add(newTypeKey); | |
345 | } | |
346 | ||
347 | // /** | |
348 | // * Index the current trace. | |
349 | // * | |
350 | // * @param useless This boolean is only to comply to the interface and will | |
351 | // be ignored. | |
352 | // */ | |
353 | // @Override | |
354 | // public synchronized void indexTrace(boolean useless) { | |
355 | // | |
356 | // long nbEvents=0L; | |
357 | // | |
358 | // // Start time need to be null to detect none have been set | |
359 | // // LastTime need to exist so we can ajust it as we go | |
360 | // LttngTimestamp startTime = null; | |
361 | // LttngTimestamp lastTime = new LttngTimestamp(); | |
362 | // | |
363 | // // Position the trace at the beginning | |
364 | // TmfContext context = seekEvent( new LttngTimestamp(0L) ); | |
365 | // | |
366 | // // Read the first event and extract the location | |
367 | // LttngEvent tmpEvent = (LttngEvent)getNextEvent(context); | |
368 | // | |
369 | // // If we read the first event, define the start time. | |
370 | // if ( tmpEvent != null ) { | |
371 | // startTime = new LttngTimestamp( tmpEvent.getTimestamp() ); | |
372 | // lastTime.setValue(tmpEvent.getTimestamp().getValue()); | |
373 | // } | |
374 | // | |
375 | // // Now, we read each event until we hit the end of the trace | |
376 | // // We will create a new checkpoint every "getCacheSize()" event | |
377 | // while ( tmpEvent != null) { | |
378 | // // Update the last time each time we read a new event | |
379 | // lastTime.setValue(tmpEvent.getTimestamp().getValue()); | |
380 | // | |
381 | // // Save a check point if needed | |
382 | // if ((nbEvents++ % getCacheSize()) == 0) { | |
383 | // // *** IMPORTANT | |
384 | // // We need to NEW each stuff we put in checkpoint | |
385 | // // Otherwise everything will be the same! | |
386 | // LttngTimestamp tmpTimestamp = new LttngTimestamp( | |
387 | // (LttngTimestamp)tmpEvent.getTimestamp() ); | |
388 | // LttngLocation newLocation = new LttngLocation( | |
389 | // (LttngTimestamp)tmpEvent.getTimestamp() ); | |
390 | // | |
391 | // fCheckpoints.add(new TmfCheckpoint(tmpTimestamp, newLocation ) ); | |
392 | // } | |
393 | // // Read the next event | |
394 | // tmpEvent = (LttngEvent)getNextEvent(context); | |
395 | // } | |
396 | // | |
397 | // // If we have a start time, we should have an end time as well | |
398 | // // Issue the new range | |
399 | // if (startTime != null) { | |
400 | // setTimeRange( new TmfTimeRange(startTime, lastTime) ); | |
401 | // notifyListeners(getTimeRange() ); | |
402 | // } | |
403 | // | |
404 | // // Ajust the total number of event in the trace | |
405 | // fNbEvents = nbEvents; | |
406 | // //printCheckpointsVector(); | |
407 | // //printDebug = true; | |
408 | // } | |
409 | ||
410 | /** | |
411 | * Return the latest saved location. Note : Modifying the returned location | |
412 | * may result in buggy positionning! | |
413 | * | |
414 | * @return The LttngLocation as it was after the last operation. | |
415 | * | |
416 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
417 | */ | |
418 | @Override | |
550d787e | 419 | public synchronized ITmfLocation<?> getCurrentLocation() { |
64fe8e8a FC |
420 | return previousLocation; |
421 | } | |
422 | ||
423 | /** | |
424 | * Position the trace to the event at the given location. | |
425 | * <p> | |
426 | * NOTE : Seeking by location is very fast compare to seeking by position | |
427 | * but is still slower than "ReadNext", avoid using it for small interval. | |
428 | * | |
429 | * @param location | |
430 | * Location of the event in the trace. If no event available at | |
431 | * this exact location, we will position ourself to the next one. | |
432 | * | |
433 | * @return The TmfContext that point to this event | |
434 | * | |
435 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
436 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
437 | */ | |
438 | @Override | |
fc6ccf6f | 439 | public synchronized TmfContext seekLocation(ITmfLocation<?> location) { |
cb866e08 | 440 | |
64fe8e8a | 441 | // // [lmcfrch] |
9b635e61 | 442 | // lastTime = 0; |
64fe8e8a FC |
443 | |
444 | if (PrintDebug) { | |
445 | System.out | |
446 | .println("seekLocation(location) location -> " + location); | |
447 | } | |
448 | ||
449 | // If the location in context is null, create a new one | |
450 | LttngLocation curLocation = null; | |
451 | if (location == null) { | |
452 | curLocation = new LttngLocation(); | |
453 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
454 | context.setRank(ITmfContext.INITIAL_RANK); | |
455 | return context; | |
456 | } else { | |
457 | curLocation = (LttngLocation) location; | |
458 | } | |
459 | ||
460 | // *** NOTE : | |
461 | // Update to location should (and will) be done in SeekEvent. | |
462 | ||
463 | // The only seek valid in LTTng is with the time, we call | |
464 | // seekEvent(timestamp) | |
465 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
466 | ||
467 | // // Adjust the previousLocation flags | |
468 | // if (location instanceof LttngLocation) { | |
469 | // LttngLocation lttngLocation = (LttngLocation) location; | |
470 | // if (lttngLocation.isLastOperationReadNext()) { | |
471 | // previousLocation.setLastOperationReadNext(); | |
472 | // } else if (lttngLocation.isLastOperationParse()) { | |
473 | // previousLocation.setLastOperationParse(); | |
474 | // } else if (lttngLocation.isLastOperationSeek()) { | |
475 | // previousLocation.setLastOperationSeek(); | |
476 | // } | |
477 | // } | |
478 | ||
479 | return context; | |
480 | } | |
481 | ||
482 | /** | |
483 | * Position the trace to the event at the given time. | |
484 | * <p> | |
485 | * NOTE : Seeking by time is very fast compare to seeking by position but is | |
486 | * still slower than "ReadNext", avoid using it for small interval. | |
487 | * | |
488 | * @param timestamp | |
489 | * Time of the event in the trace. If no event available at this | |
490 | * exact time, we will position ourself to the next one. | |
491 | * | |
492 | * @return The TmfContext that point to this event | |
493 | * | |
494 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
495 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
496 | */ | |
497 | @Override | |
498 | public synchronized TmfContext seekEvent(TmfTimestamp timestamp) { | |
499 | ||
500 | // // [lmcfrch] | |
501 | // lastTime = 0; | |
502 | ||
503 | if (PrintDebug) { | |
504 | System.out | |
505 | .println("seekEvent(timestamp) timestamp -> " + timestamp); | |
506 | } | |
507 | ||
508 | // Call JNI to seek | |
509 | currentJniTrace.seekToTime(new JniTime(timestamp.getValue())); | |
510 | ||
511 | // Save the time at which we seeked | |
512 | previousLocation.setOperationTime(timestamp.getValue()); | |
513 | // Set the operation marker as seek, to be able to detect we did "seek" | |
514 | // this event | |
515 | previousLocation.setLastOperationSeek(); | |
516 | ||
517 | // *** VERIFY *** | |
518 | // Is that too paranoid? | |
519 | // | |
520 | // We don't trust what upper level could do with our internal location | |
521 | // so we create a new one to return instead | |
522 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
523 | ||
524 | return new TmfContext(curLocation); | |
525 | } | |
526 | ||
527 | /** | |
528 | * Position the trace to the event at the given position (rank). | |
529 | * <p> | |
530 | * NOTE : Seeking by position is very slow in LTTng, consider seeking by | |
531 | * timestamp. | |
532 | * | |
533 | * @param position | |
534 | * Position (or rank) of the event in the trace, starting at 0. | |
535 | * | |
536 | * @return The TmfContext that point to this event | |
537 | * | |
538 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
539 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
540 | */ | |
541 | @Override | |
542 | public synchronized TmfContext seekEvent(long position) { | |
543 | ||
544 | if (PrintDebug) { | |
545 | System.out.println("seekEvent(position) position -> " + position); | |
546 | } | |
547 | ||
548 | TmfTimestamp timestamp = null; | |
549 | long index = position / getCacheSize(); | |
550 | ||
551 | // Get the timestamp of the closest check point to the given position | |
552 | if (fCheckpoints.size() > 0) { | |
553 | if (index >= fCheckpoints.size()) { | |
554 | index = fCheckpoints.size() - 1; | |
555 | } | |
556 | timestamp = fCheckpoints.elementAt((int) index) | |
557 | .getTimestamp(); | |
558 | } | |
559 | // If none, take the start time of the trace | |
560 | else { | |
561 | timestamp = getStartTime(); | |
562 | } | |
563 | ||
564 | // Seek to the found time | |
565 | TmfContext tmpContext = seekEvent(timestamp); | |
566 | tmpContext.setRank((index + 1) * fIndexPageSize); | |
567 | previousLocation = (LttngLocation) tmpContext.getLocation(); | |
568 | ||
569 | // Ajust the index of the event we found at this check point position | |
570 | Long currentPosition = index * getCacheSize(); | |
571 | ||
572 | Long lastTimeValueRead = 0L; | |
573 | ||
574 | // Get the event at current position. This won't move to the next one | |
575 | JniEvent tmpJniEvent = currentJniTrace.findNextEvent(); | |
576 | // Now that we are positionned at the checkpoint, | |
577 | // we need to "readNext" (Position - CheckpointPosition) times or until | |
578 | // trace "run out" | |
579 | while ((tmpJniEvent != null) && (currentPosition < position)) { | |
580 | tmpJniEvent = currentJniTrace.readNextEvent(); | |
581 | currentPosition++; | |
582 | } | |
583 | ||
584 | // If we found our event, save its timestamp | |
585 | if (tmpJniEvent != null) { | |
586 | lastTimeValueRead = tmpJniEvent.getEventTime().getTime(); | |
587 | } | |
588 | ||
589 | // Set the operation marker as seek, to be able to detect we did "seek" | |
590 | // this event | |
591 | previousLocation.setLastOperationSeek(); | |
592 | // Save read event time | |
593 | previousLocation.setOperationTime(lastTimeValueRead); | |
594 | ||
595 | // *** VERIFY *** | |
596 | // Is that too paranoid? | |
597 | // | |
598 | // We don't trust what upper level could do with our internal location | |
599 | // so we create a new one to return instead | |
600 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
601 | ||
602 | return new TmfContext(curLocation); | |
603 | } | |
604 | ||
605 | /** | |
606 | * Return the event in the trace according to the given context. Read it if | |
607 | * necessary. | |
608 | * <p> | |
609 | * Similar (same?) as ParseEvent except that calling GetNext twice read the | |
610 | * next one the second time. | |
611 | * | |
612 | * @param context | |
613 | * Current TmfContext where to get the event | |
614 | * | |
615 | * @return The LttngEvent we read of null if no event are available | |
616 | * | |
617 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
618 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
619 | */ | |
620 | ||
621 | public int nbEventsRead = 0; | |
622 | ||
623 | @Override | |
624 | public synchronized LttngEvent getNextEvent(TmfContext context) { | |
625 | ||
626 | if (PrintDebug) { | |
627 | System.out | |
628 | .println("getNextEvent(context) context.getLocation() -> " | |
629 | + context.getLocation()); | |
630 | } | |
631 | ||
632 | LttngEvent returnedEvent = null; | |
633 | LttngLocation curLocation = null; | |
634 | ||
635 | curLocation = (LttngLocation)context.getLocation(); | |
7f2f49e3 | 636 | // If the location in context is null, create a new one |
64fe8e8a FC |
637 | if ( curLocation == null ) { |
638 | curLocation = getCurrentLocation(context); | |
7f2f49e3 | 639 | } |
64fe8e8a FC |
640 | |
641 | // // [lmcfrch] | |
642 | // TmfContext savedContext = context.clone(); | |
643 | // // [/lmcfrch] | |
644 | ||
645 | // *** HACK *** | |
646 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
647 | // once ParseEvent() is called | |
648 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
649 | // event. | |
650 | // Since parsing/reading invalidate the previous event, | |
651 | // we need to make sure the sequence ParseEvent() -> GetNextEvent() will | |
652 | // not actually move to the next event. | |
653 | // To do so, we avoid moving for call to "GetNextEvent()" that follow | |
654 | // call to a call to "ParseEvent()". | |
655 | // However, calling ParseEvent() -> GetNextEvent() -> GetNextEvent() | |
656 | // will only move next by one. | |
657 | ||
658 | // *** Positioning trick : | |
659 | // GetNextEvent only read the trace if : | |
660 | // 1- The last operation was NOT a ParseEvent --> A read is required | |
661 | // OR | |
662 | // 2- The time of the previous location is different from the current | |
663 | // one --> A seek + a read is required | |
664 | if ((!(curLocation.isLastOperationParse())) | |
665 | || (previousLocation.getOperationTimeValue() != curLocation | |
666 | .getOperationTimeValue())) { | |
667 | if (previousLocation.getOperationTimeValue() != curLocation | |
668 | .getOperationTimeValue()) { | |
669 | if (PrintDebug) { | |
670 | System.out | |
671 | .println("\t\tSeeking in getNextEvent. [ LastTime : " | |
672 | + previousLocation.getOperationTimeValue() | |
673 | + " CurrentTime" | |
674 | + curLocation.getOperationTimeValue() | |
675 | + " ]"); | |
7f2f49e3 | 676 | } |
64fe8e8a | 677 | seekEvent(curLocation.getOperationTime()); |
7f2f49e3 | 678 | } |
64fe8e8a FC |
679 | // Read the next event from the trace. The last one will NO LONGER |
680 | // BE VALID. | |
681 | returnedEvent = readNextEvent(curLocation); | |
682 | ||
683 | } else { | |
684 | // No event was read, just return the one currently loaded (the last | |
685 | // one we read) | |
686 | returnedEvent = currentLttngEvent; | |
cb866e08 | 687 | |
64fe8e8a FC |
688 | // *** IMPORTANT! |
689 | // Reset (erase) the operation marker to both location, to be able | |
690 | // to detect we did NOT "read" this event | |
691 | previousLocation.resetLocationState(); | |
692 | curLocation.resetLocationState(); | |
693 | } | |
694 | ||
695 | // If we read an event, set it's time to the locations (both previous | |
696 | // and current) | |
697 | if (returnedEvent != null) { | |
698 | setPreviousAndCurrentTimes(context, returnedEvent, curLocation); | |
699 | ||
700 | // // [lmcfrch] | |
701 | // LttngLocation prevLocation = (LttngLocation) | |
702 | // savedContext.getLocation(); | |
703 | // LttngLocation currLocation = (LttngLocation) | |
704 | // context.getLocation(); | |
705 | // if (prevLocation.equals(currLocation)) { | |
706 | // System.out.println("Aie"); | |
707 | // } | |
708 | // Tracer.trace("Trc: " + context.getRank() + ": " + | |
709 | // returnedEvent.getTimestamp().toString() + " (" + | |
710 | // (prevLocation.isLastOperationParse() ? "T" : "F") + "," + | |
711 | // (prevLocation.isLastOperationReadNext() ? "T" : "F") + "," + | |
712 | // (prevLocation.isLastOperationSeek() ? "T" : "F") + "), (" + | |
713 | // (currLocation.isLastOperationParse() ? "T" : "F") + "," + | |
714 | // (currLocation.isLastOperationReadNext() ? "T" : "F") + "," + | |
715 | // (currLocation.isLastOperationSeek() ? "T" : "F") + ")" | |
716 | // ); | |
717 | // // [/lmcfrch] | |
718 | ||
719 | ||
720 | } | |
721 | ||
722 | return returnedEvent; | |
723 | } | |
724 | ||
725 | // this method was extracted for profiling purposes | |
726 | private void setPreviousAndCurrentTimes(TmfContext context, LttngEvent returnedEvent, | |
727 | LttngLocation curLocation) { | |
728 | ||
729 | TmfTimestamp eventTimestamp = returnedEvent.getTimestamp(); | |
730 | //long eventTime = eventTimestamp.getValue(); | |
731 | previousLocation.setOperationTime(eventTimestamp.getValue()); | |
732 | curLocation.setOperationTime(eventTimestamp.getValue()); | |
733 | updateIndex(context, context.getRank(), eventTimestamp); | |
734 | context.updateRank(1); | |
735 | } | |
736 | ||
737 | protected void updateIndex(TmfContext context, long rank, TmfTimestamp timestamp) { | |
738 | ||
739 | if (getStartTime().compareTo(timestamp, false) > 0) setStartTime( timestamp ); | |
740 | if (getEndTime().compareTo(timestamp, false) < 0) setEndTime(timestamp ); | |
741 | if (rank != ITmfContext.UNKNOWN_RANK) { | |
742 | if (fNbEvents <= rank) | |
743 | fNbEvents = rank + 1; | |
744 | // Build the index as we go along | |
745 | if ((rank % fIndexPageSize) == 0) { | |
746 | // Determine the table position | |
747 | long position = rank / fIndexPageSize; | |
748 | // Add new entry at proper location (if empty) | |
749 | if (fCheckpoints.size() == position) { | |
750 | addCheckPoint(context, timestamp); | |
7f2f49e3 | 751 | } |
7f2f49e3 | 752 | } |
64fe8e8a FC |
753 | } |
754 | } | |
755 | ||
756 | private void addCheckPoint(TmfContext context, TmfTimestamp timestamp) { | |
757 | ITmfLocation<?> location = context.getLocation().clone(); | |
758 | fCheckpoints.add(new TmfCheckpoint(timestamp.clone(), location)); | |
759 | } | |
760 | ||
761 | // this method was extracted for profiling purposes | |
762 | private LttngEvent readNextEvent(LttngLocation curLocation) { | |
763 | LttngEvent returnedEvent; | |
764 | // Read the next event from the trace. The last one will NO LONGER BE VALID. | |
765 | returnedEvent = readEvent(curLocation); | |
766 | nbEventsRead++; | |
7f2f49e3 | 767 | |
64fe8e8a FC |
768 | // Set the operation marker as read to both location, to be able to detect we did "read" this event |
769 | previousLocation.setLastOperationReadNext(); | |
770 | curLocation.setLastOperationReadNext(); | |
771 | return returnedEvent; | |
772 | } | |
773 | ||
774 | // this method was extracted for profiling purposes | |
775 | private LttngLocation getCurrentLocation(TmfContext context) { | |
776 | LttngLocation curLocation; | |
777 | curLocation = new LttngLocation(); | |
778 | context.setLocation(curLocation); | |
779 | return curLocation; | |
780 | } | |
781 | /** | |
782 | * Return the event in the trace according to the given context. Read it if | |
783 | * necessary. | |
784 | * <p> | |
785 | * Similar (same?) as GetNextEvent except that calling ParseEvent twice will | |
786 | * return the same event | |
787 | * | |
788 | * @param context | |
789 | * Current TmfContext where to get the event | |
790 | * | |
791 | * @return The LttngEvent we read of null if no event are available | |
792 | * | |
793 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
794 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
795 | */ | |
796 | @Override | |
797 | public synchronized LttngEvent parseEvent(TmfContext context) { | |
798 | ||
799 | if (PrintDebug) { | |
800 | System.out.println("parseEvent(context) context.getLocation() -> " | |
801 | + context.getLocation()); | |
802 | } | |
803 | ||
804 | LttngEvent returnedEvent = null; | |
805 | LttngLocation curLocation = null; | |
806 | ||
807 | // If the location in context is null, create a new one | |
808 | if (context.getLocation() == null) { | |
809 | curLocation = new LttngLocation(); | |
810 | context.setLocation(curLocation); | |
811 | } | |
812 | // Otherwise, we use the one in context; it should be a valid | |
813 | // LttngLocation | |
814 | else { | |
815 | curLocation = (LttngLocation) context.getLocation(); | |
816 | } | |
817 | ||
818 | // *** HACK *** | |
819 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
820 | // once ParseEvent() is called | |
821 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
822 | // event. | |
823 | // So, before "Parsing" an event, we have to make sure we didn't "Read" | |
824 | // it alreafy. | |
825 | // Also, "Reading" invalidate the previous Event in LTTNG and seek back | |
826 | // is very costly, | |
827 | // so calling twice "Parse" will return the same event, giving a way to | |
828 | // get the "Currently loaded" event | |
829 | ||
830 | // *** Positionning trick : | |
831 | // ParseEvent only read the trace if : | |
832 | // 1- The last operation was NOT a ParseEvent or a GetNextEvent --> A | |
833 | // read is required | |
834 | // OR | |
835 | // 2- The time of the previous location is different from the current | |
836 | // one --> A seek + a read is required | |
837 | if (((!(curLocation.isLastOperationParse())) && ((!(curLocation | |
838 | .isLastOperationReadNext())))) | |
839 | || (previousLocation.getOperationTimeValue() != curLocation | |
840 | .getOperationTimeValue())) { | |
841 | // Previous time != Current time : We need to reposition to the | |
842 | // current time | |
843 | if (previousLocation.getOperationTimeValue() != curLocation | |
844 | .getOperationTimeValue()) { | |
845 | if (PrintDebug) { | |
846 | System.out | |
847 | .println("\t\tSeeking in getNextEvent. [ LastTime : " | |
848 | + previousLocation.getOperationTimeValue() | |
849 | + " CurrentTime" | |
850 | + curLocation.getOperationTimeValue() | |
851 | + " ]"); | |
852 | } | |
853 | seekEvent(curLocation.getOperationTime()); | |
854 | } | |
855 | ||
856 | // Read the next event from the trace. The last one will NO LONGER | |
857 | // BE VALID. | |
858 | returnedEvent = readEvent(curLocation); | |
859 | } else { | |
860 | // No event was read, just return the one currently loaded (the last | |
861 | // one we read) | |
862 | returnedEvent = currentLttngEvent; | |
863 | } | |
864 | ||
865 | // If we read an event, set it's time to the locations (both previous | |
866 | // and current) | |
867 | if (returnedEvent != null) { | |
868 | previousLocation.setOperationTime((LttngTimestamp) returnedEvent | |
869 | .getTimestamp()); | |
870 | curLocation.setOperationTime((LttngTimestamp) returnedEvent | |
871 | .getTimestamp()); | |
872 | } | |
873 | ||
874 | // Set the operation marker as parse to both location, to be able to | |
875 | // detect we already "read" this event | |
876 | previousLocation.setLastOperationParse(); | |
877 | curLocation.setLastOperationParse(); | |
878 | ||
879 | return returnedEvent; | |
880 | } | |
881 | ||
882 | /* | |
883 | * Read the next event from the JNI and convert it as Lttng Event<p> | |
884 | * | |
885 | * @param location Current LttngLocation that to be updated with the event | |
886 | * timestamp | |
887 | * | |
888 | * @return The LttngEvent we read of null if no event are available | |
889 | * | |
890 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
891 | * | |
892 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
893 | */ | |
894 | private synchronized LttngEvent readEvent(LttngLocation location) { | |
895 | LttngEvent returnedEvent = null; | |
896 | JniEvent tmpEvent = null; | |
897 | ||
898 | // Read the next event from JNI. THIS WILL INVALIDATE THE CURRENT LTTNG | |
899 | // EVENT. | |
900 | tmpEvent = currentJniTrace.readNextEvent(); | |
901 | ||
902 | if (tmpEvent != null) { | |
7f2f49e3 WB |
903 | // *** NOTE |
904 | // Convert will update the currentLttngEvent | |
64fe8e8a FC |
905 | returnedEvent = convertJniEventToTmf(tmpEvent); |
906 | ||
907 | location.setOperationTime((LttngTimestamp) returnedEvent | |
908 | .getTimestamp()); | |
909 | } | |
7f2f49e3 | 910 | // *** NOTE |
64fe8e8a FC |
911 | // If the read failed (likely the last event in the trace), set the |
912 | // LastReadTime to the JNI time | |
913 | // That way, even if we try to read again, we will step over the bogus | |
914 | // seek and read | |
7f2f49e3 | 915 | else { |
64fe8e8a | 916 | location.setOperationTime(getEndTime().getValue() + 1); |
7f2f49e3 | 917 | } |
64fe8e8a | 918 | |
7f2f49e3 | 919 | return returnedEvent; |
64fe8e8a FC |
920 | } |
921 | ||
922 | /** | |
923 | * Method to convert a JniEvent into a LttngEvent. | |
924 | * <p> | |
925 | * | |
926 | * Note : This method will call LttngEvent convertEventJniToTmf(JniEvent, | |
927 | * boolean) with a default value for isParsingNeeded | |
928 | * | |
929 | * @param newEvent | |
930 | * The JniEvent to convert into LttngEvent | |
931 | * | |
932 | * @return The converted LttngEvent | |
933 | * | |
934 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
935 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent | |
936 | */ | |
b20696db | 937 | public synchronized LttngEvent convertJniEventToTmf(JniEvent newEvent) { |
64fe8e8a FC |
938 | currentLttngEvent = convertJniEventToTmf(newEvent, |
939 | IS_PARSING_NEEDED_DEFAULT); | |
940 | ||
941 | return currentLttngEvent; | |
942 | } | |
943 | ||
944 | /** | |
945 | * Method to convert a JniEvent into a LttngEvent | |
946 | * | |
947 | * @param jniEvent | |
948 | * The JniEvent to convert into LttngEvent | |
949 | * @param isParsingNeeded | |
950 | * A boolean value telling if the event should be parsed or not. | |
951 | * | |
952 | * @return The converted LttngEvent | |
953 | * | |
954 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
955 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent | |
956 | */ | |
957 | public synchronized LttngEvent convertJniEventToTmf(JniEvent jniEvent, | |
958 | boolean isParsingNeeded) { | |
959 | ||
960 | if (UniqueEvent) { | |
961 | ||
962 | // *** | |
963 | // UNHACKED : We can no longer do that because TCF need to maintain | |
964 | // several events at once. | |
965 | // This is very slow to do so in LTTng, this has to be temporary. | |
966 | // *** HACK *** | |
967 | // To save time here, we only set value instead of allocating new | |
968 | // object | |
969 | // This give an HUGE performance improvement | |
970 | // all allocation done in the LttngTrace constructor | |
971 | // *** | |
972 | eventTimestamp.setValue(jniEvent.getEventTime().getTime()); | |
973 | eventSource.setSourceId(jniEvent.requestEventSource()); | |
974 | ||
975 | eventType = traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent)); | |
976 | ||
977 | eventReference.setValue(jniEvent.getParentTracefile() | |
978 | .getTracefilePath()); | |
979 | eventReference.setTracepath(this.getName()); | |
980 | ||
981 | eventContent.emptyContent(); | |
982 | ||
983 | currentLttngEvent.setType(eventType); | |
984 | // Save the jni reference | |
985 | currentLttngEvent.updateJniEventReference(jniEvent); | |
986 | ||
987 | // Parse now if was asked | |
988 | // Warning : THIS IS SLOW | |
989 | if (isParsingNeeded) { | |
990 | eventContent.getFields(); | |
991 | } | |
992 | ||
993 | return currentLttngEvent; | |
994 | } else { | |
995 | return convertJniEventToTmfMultipleEventEvilFix(jniEvent, | |
996 | isParsingNeeded); | |
997 | } | |
998 | ||
999 | } | |
1000 | ||
1001 | /** | |
1002 | * This method is a temporary fix to support multiple events at once in TMF | |
1003 | * This is expected to be slow and should be fixed in another way. See | |
1004 | * comment in convertJniEventToTmf(); | |
1005 | * | |
1006 | * @param jniEvent | |
1007 | * The current JNI Event | |
1008 | * @return Current Lttng Event fully parsed | |
1009 | */ | |
1010 | private synchronized LttngEvent convertJniEventToTmfMultipleEventEvilFix( | |
1011 | JniEvent jniEvent, boolean isParsingNeeded) { | |
1012 | // *** HACK *** | |
1013 | // Below : the "fix" with all the new and the full-parse | |
1014 | // Allocating new memory is slow. | |
1015 | // Parsing every events is very slow. | |
1016 | eventTimestamp = new LttngTimestamp(jniEvent.getEventTime().getTime()); | |
1017 | eventSource = new LttngEventSource(jniEvent.requestEventSource()); | |
1018 | eventReference = new LttngEventReference(jniEvent.getParentTracefile() | |
1019 | .getTracefilePath(), this.getName()); | |
1020 | eventType = new LttngEventType(traceTypes.get(EventTypeKey | |
1021 | .getEventTypeHash(jniEvent))); | |
1022 | eventContent = new LttngEventContent(currentLttngEvent); | |
1023 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, | |
1024 | eventType, eventContent, eventReference, null); | |
1025 | ||
1026 | // The jni reference is no longer reliable but we will keep it anyhow | |
1027 | currentLttngEvent.updateJniEventReference(jniEvent); | |
1028 | // Ensure that the content is correctly set | |
1029 | eventContent.setEvent(currentLttngEvent); | |
1030 | ||
1031 | // Parse the event if it was needed | |
1032 | // *** WARNING *** | |
1033 | // ONLY for testing, NOT parsing events with non-unique events WILL | |
1034 | // result in segfault in the JVM | |
1035 | if (isParsingNeeded) { | |
1036 | eventContent.getFields(); | |
1037 | } | |
1038 | ||
1039 | return currentLttngEvent; | |
1040 | } | |
1041 | ||
1042 | /** | |
1043 | * Reference to the current LttngTrace we are reading from. | |
1044 | * <p> | |
1045 | * | |
1046 | * Note : This bypass the framework and should not be use, except for | |
1047 | * testing! | |
1048 | * | |
1049 | * @return Reference to the current LttngTrace | |
1050 | * | |
1051 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1052 | */ | |
1053 | public JniTrace getCurrentJniTrace() { | |
1054 | return currentJniTrace; | |
1055 | } | |
1056 | ||
1057 | /** | |
1058 | * Return a reference to the current LttngEvent we have in memory. | |
1059 | * | |
1060 | * @return The current (last read) LttngEvent | |
1061 | * | |
1062 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent | |
1063 | */ | |
1064 | public synchronized LttngEvent getCurrentEvent() { | |
1065 | return currentLttngEvent; | |
1066 | } | |
1067 | ||
1068 | /** | |
1069 | * Get the major version number for the current trace | |
1070 | * | |
1071 | * @return Version major or -1 if unknown | |
1072 | * | |
1073 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1074 | * | |
1075 | */ | |
1076 | public short getVersionMajor() { | |
1077 | if (currentJniTrace != null) { | |
1078 | return currentJniTrace.getLttMajorVersion(); | |
1079 | } else { | |
1080 | return -1; | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | /** | |
1085 | * Get the minor version number for the current trace | |
1086 | * | |
1087 | * @return Version minor or -1 if unknown | |
1088 | * | |
1089 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1090 | * | |
1091 | */ | |
1092 | public short getVersionMinor() { | |
1093 | if (currentJniTrace != null) { | |
1094 | return currentJniTrace.getLttMinorVersion(); | |
1095 | } else { | |
1096 | return -1; | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | /** | |
1101 | * Get the number of CPU for this trace | |
1102 | * | |
1103 | * @return Number of CPU or -1 if unknown | |
1104 | * | |
1105 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1106 | * | |
1107 | */ | |
1108 | public int getCpuNumber() { | |
1109 | if (currentJniTrace != null) { | |
1110 | return currentJniTrace.getCpuNumber(); | |
1111 | } else { | |
1112 | return -1; | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | /** | |
1117 | * Print the content of the checkpoint vector. | |
1118 | * <p> | |
1119 | * | |
1120 | * This is intended for debug purpose only. | |
1121 | */ | |
1122 | public void printCheckpointsVector() { | |
1123 | System.out.println("StartTime : " | |
1124 | + getTimeRange().getStartTime().getValue()); | |
1125 | System.out.println("EndTime : " | |
1126 | + getTimeRange().getEndTime().getValue()); | |
1127 | ||
1128 | for (int pos = 0; pos < fCheckpoints.size(); pos++) { | |
1129 | System.out.print(pos + ": " + "\t"); | |
1130 | System.out.print(fCheckpoints.get(pos).getTimestamp() + "\t"); | |
1131 | System.out.println(fCheckpoints.get(pos).getLocation()); | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | /** | |
1136 | * Return a String identifying this trace. | |
1137 | * | |
1138 | * @return String that identify this trace | |
1139 | */ | |
1140 | @Override | |
3b38ea61 | 1141 | @SuppressWarnings("nls") |
7f2f49e3 | 1142 | public String toString() { |
64fe8e8a FC |
1143 | String returnedData = ""; |
1144 | ||
1145 | returnedData += "Path :" + getPath() + " "; | |
1146 | returnedData += "Trace:" + currentJniTrace + " "; | |
1147 | returnedData += "Event:" + currentLttngEvent; | |
1148 | ||
1149 | return returnedData; | |
1150 | } | |
cb866e08 | 1151 | |
28b94d61 FC |
1152 | } |
1153 | ||
1154 | /* | |
1155 | * EventTypeKey inner class | |
1156 | * | |
64fe8e8a FC |
1157 | * This class is used to make the process of generating the HashMap key more |
1158 | * transparent and so less error prone to use | |
28b94d61 | 1159 | */ |
64fe8e8a FC |
1160 | final class EventTypeKey { |
1161 | // *** WARNING *** | |
1162 | // These two getEventTypeKey() functions should ALWAYS construct the key the | |
1163 | // same ways! | |
1164 | // Otherwise, every type search will fail! | |
1165 | ||
1166 | // added final to encourage inlining. | |
1167 | ||
1168 | // generating a hash code by hand to avoid a string creation | |
1169 | final static public int getEventTypeHash( LttngEventType newEventType ) | |
1170 | { | |
1171 | return generateHash(newEventType.getTracefileName(), newEventType.getCpuId(), newEventType.getMarkerName() ); | |
1172 | } | |
1173 | ||
1174 | final private static int generateHash(String traceFileName, long cpuNumber , String markerName) { | |
1175 | // 0x1337 is a prime number. The number of CPUs is always under 8192 on the current kernel, so this will work with the current linux kernel. | |
1176 | int cpuHash = (int) (cpuNumber*(0x1337)); | |
1177 | return traceFileName.hashCode() ^(cpuHash) ^ markerName.hashCode(); | |
1178 | } | |
1179 | ||
1180 | // generating a hash code by hand to avoid a string creation | |
1181 | final static public int getEventTypeHash( JniEvent newEvent ) | |
1182 | { | |
1183 | return generateHash( newEvent.getParentTracefile().getTracefileName(), newEvent.getParentTracefile().getCpuNumber(),newEvent.requestEventMarker().getName() ); | |
1184 | } | |
1185 | ||
1186 | ||
e31e01e8 | 1187 | } |