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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 FC |
37 | import org.eclipse.linuxtools.tmf.trace.ITmfLocation; |
38 | import org.eclipse.linuxtools.tmf.trace.TmfContext; | |
5d10d135 | 39 | import org.eclipse.linuxtools.tmf.trace.TmfTrace; |
5d10d135 | 40 | |
3fbd810a FC |
41 | |
42 | class LTTngTraceException extends LttngException { | |
43 | static final long serialVersionUID = -1636648737081868146L; | |
44 | ||
45 | public LTTngTraceException(String errMsg) { | |
46 | super(errMsg); | |
47 | } | |
48 | } | |
49 | ||
5d10d135 | 50 | /** |
07d9e2ee FC |
51 | * <b><u>LTTngTrace</u></b><p> |
52 | * | |
5d10d135 ASL |
53 | * LTTng trace implementation. It accesses the C trace handling library |
54 | * (seeking, reading and parsing) through the JNI component. | |
55 | */ | |
e31e01e8 | 56 | public class LTTngTrace extends TmfTrace<LttngEvent> { |
a55a769e | 57 | |
cb866e08 | 58 | // // [lmcfrch] |
9b635e61 | 59 | // private long lastTime = 0; |
cb866e08 | 60 | |
f9673903 | 61 | public static boolean printDebug = false; |
fafd6325 | 62 | public static boolean uniqueEvent = false; |
a55a769e | 63 | |
fafd6325 | 64 | private final static boolean SHOW_LTT_DEBUG_DEFAULT = false; |
f9673903 | 65 | private final static boolean IS_PARSING_NEEDED_DEFAULT = !uniqueEvent; |
a55a769e | 66 | private final static int CHECKPOINT_PAGE_SIZE = 1000; |
5d10d135 ASL |
67 | |
68 | // Reference to our JNI trace | |
69 | private JniTrace currentJniTrace = null; | |
70 | ||
fafd6325 WB |
71 | // *** |
72 | // UNHACKED : We can no longer do that because TCF need to maintain several events at once. | |
73 | // This is very slow to do so in LTTng, this has to be temporary. | |
74 | // *** HACK *** | |
75 | // To save time, we will declare all component of the LttngEvent during the construction of the trace | |
76 | // Then, while reading the trace, we will just SET the values instead of declaring new object | |
77 | // *** | |
28b94d61 FC |
78 | LttngTimestamp eventTimestamp = null; |
79 | LttngEventSource eventSource = null; | |
28b94d61 FC |
80 | LttngEventContent eventContent = null; |
81 | LttngEventReference eventReference = null; | |
fafd6325 WB |
82 | |
83 | ||
28b94d61 FC |
84 | // The actual event |
85 | LttngEvent currentLttngEvent = null; | |
86 | ||
a55a769e | 87 | // The current location |
7f2f49e3 | 88 | LttngLocation previousLocation = null; |
a55a769e | 89 | |
fafd6325 | 90 | LttngEventType eventType = null; |
28b94d61 FC |
91 | // Hashmap of the possible types of events (Tracefile/CPU/Marker in the JNI) |
92 | HashMap<String, LttngEventType> traceTypes = null; | |
93 | // This vector will be used to quickly find a marker name from a position | |
94 | Vector<String> traceTypeNames = null; | |
95 | ||
5d10d135 | 96 | /** |
07d9e2ee | 97 | * Default Constructor.<p> |
5d10d135 | 98 | * |
07d9e2ee FC |
99 | * @param path Path to a <b>directory</b> that contain an LTTng trace. |
100 | * | |
101 | * @exception Exception (most likely LTTngTraceException or FileNotFoundException) | |
5d10d135 ASL |
102 | */ |
103 | public LTTngTrace(String path) throws Exception { | |
07d9e2ee FC |
104 | // Call with "wait for completion" true and "skip indexing" false |
105 | this(path, true, false); | |
5d10d135 ASL |
106 | } |
107 | ||
108 | /** | |
07d9e2ee FC |
109 | * Constructor, with control over the indexing. |
110 | * <p> | |
111 | * @param path Path to a <b>directory</b> that contain an LTTng trace. | |
112 | * @param waitForCompletion Should we wait for indexign to complete before moving on. | |
113 | * | |
114 | * @exception Exception (most likely LTTngTraceException or FileNotFoundException) | |
07d9e2ee FC |
115 | */ |
116 | public LTTngTrace(String path, boolean waitForCompletion) throws Exception { | |
28b94d61 | 117 | // Call with "skip indexing" false |
07d9e2ee FC |
118 | this(path, waitForCompletion, false); |
119 | } | |
120 | ||
121 | /** | |
122 | * Default constructor, with control over the indexing and possibility to bypass indexation | |
5d10d135 ASL |
123 | * <p> |
124 | * @param path Path to a <b>directory</b> that contain an LTTng trace. | |
125 | * @param waitForCompletion Should we wait for indexign to complete before moving on. | |
07d9e2ee | 126 | * @param bypassIndexing Should we bypass indexing completly? This is should only be useful for unit testing. |
5d10d135 | 127 | * |
07d9e2ee | 128 | * @exception Exception (most likely LTTngTraceException or FileNotFoundException) |
5d10d135 ASL |
129 | * |
130 | */ | |
07d9e2ee | 131 | public LTTngTrace(String path, boolean waitForCompletion, boolean bypassIndexing) throws Exception { |
ce785d7d | 132 | super(path, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE); |
5d10d135 | 133 | try { |
004f471b | 134 | currentJniTrace = JniTraceFactory.getJniTrace(path, SHOW_LTT_DEBUG_DEFAULT); |
5d10d135 | 135 | } |
3fbd810a FC |
136 | catch (Exception e) { |
137 | throw new LTTngTraceException(e.getMessage()); | |
88144d4a | 138 | } |
28b94d61 | 139 | |
28b94d61 FC |
140 | // Export all the event types from the JNI side |
141 | traceTypes = new HashMap<String, LttngEventType>(); | |
142 | traceTypeNames = new Vector<String>(); | |
143 | initialiseEventTypes(currentJniTrace); | |
144 | ||
145 | // *** VERIFY *** | |
146 | // Verify that all those "default constructor" are safe to use | |
147 | eventTimestamp = new LttngTimestamp(); | |
148 | eventSource = new LttngEventSource(); | |
149 | eventType = new LttngEventType(); | |
150 | eventContent = new LttngEventContent(currentLttngEvent); | |
151 | eventReference = new LttngEventReference(this.getName()); | |
152 | ||
153 | // Create the skeleton event | |
b7f0ec69 | 154 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, null); |
28b94d61 | 155 | |
a55a769e | 156 | // Create a new current location |
7f2f49e3 | 157 | previousLocation = new LttngLocation(); |
a55a769e WB |
158 | |
159 | ||
28b94d61 FC |
160 | // Set the currentEvent to the eventContent |
161 | eventContent.setEvent(currentLttngEvent); | |
162 | ||
550d787e FC |
163 | // // Bypass indexing if asked |
164 | // if ( bypassIndexing == false ) { | |
165 | // indexTrace(true); | |
166 | // } | |
167 | // else { | |
a55a769e | 168 | // Even if we don't have any index, set ONE checkpoint |
550d787e | 169 | // fCheckpoints.add(new TmfCheckpoint(new LttngTimestamp(0L) , new LttngLocation() ) ); |
a55a769e WB |
170 | |
171 | // Set the start time of the trace | |
172 | setTimeRange( new TmfTimeRange( new LttngTimestamp(currentJniTrace.getStartTime().getTime()), | |
173 | new LttngTimestamp(currentJniTrace.getEndTime().getTime()) | |
174 | ) ); | |
550d787e | 175 | // } |
9b635e61 | 176 | |
5d10d135 ASL |
177 | } |
178 | ||
3fbd810a FC |
179 | /* |
180 | * Copy constructor is forbidden for LttngEvenmStream | |
5d10d135 ASL |
181 | * |
182 | */ | |
369aca6e WB |
183 | public LTTngTrace(LTTngTrace oldTrace) throws Exception { |
184 | this(oldTrace.getPath(), false, true); | |
185 | ||
186 | // *** VERIFY *** | |
187 | // Is this safe? | |
188 | this.fCheckpoints = oldTrace.fCheckpoints; | |
9b635e61 | 189 | |
369aca6e WB |
190 | /* |
191 | // This would only work if the index is already done | |
192 | this.fCheckpoints = new Vector<TmfCheckpoint>( oldTrace.fCheckpoints.size() ); | |
193 | for (int x = 0; x<oldTrace.fCheckpoints.size(); x++){ | |
194 | TmfCheckpoint tmpCheckPoint = oldTrace.fCheckpoints.get(x); | |
195 | this.fCheckpoints.add( new TmfCheckpoint(tmpCheckPoint.getTimestamp(), tmpCheckPoint.getLocation()) ); | |
196 | } | |
197 | */ | |
198 | ||
199 | // Set the start time of the trace | |
200 | setTimeRange( new TmfTimeRange( new LttngTimestamp(oldTrace.getStartTime()), | |
201 | new LttngTimestamp(oldTrace.getEndTime())) | |
202 | ); | |
203 | } | |
204 | ||
205 | public LTTngTrace createTraceCopy() { | |
206 | LTTngTrace returnedTrace = null; | |
207 | ||
208 | try { | |
209 | returnedTrace = new LTTngTrace(this); | |
210 | } | |
211 | catch (Exception e) { | |
212 | System.out.println("ERROR : Could not create LTTngTrace copy (createTraceCopy).\nError is : " + e.getStackTrace()); | |
213 | } | |
214 | ||
215 | return returnedTrace; | |
9aae0442 ASL |
216 | } |
217 | ||
550d787e | 218 | @Override |
9b635e61 | 219 | public synchronized LTTngTrace clone() { |
550d787e FC |
220 | LTTngTrace clone = null; |
221 | try { | |
222 | clone = (LTTngTrace) super.clone(); | |
223 | try { | |
224 | clone.currentJniTrace = JniTraceFactory.getJniTrace(getPath(), SHOW_LTT_DEBUG_DEFAULT); | |
225 | } catch (JniException e) { | |
cb866e08 | 226 | // e.printStackTrace(); |
550d787e FC |
227 | } |
228 | ||
229 | // Export all the event types from the JNI side | |
230 | clone.traceTypes = new HashMap<String, LttngEventType>(); | |
231 | clone.traceTypeNames = new Vector<String>(); | |
232 | clone.initialiseEventTypes(clone.currentJniTrace); | |
233 | ||
234 | // Verify that all those "default constructor" are safe to use | |
235 | clone.eventTimestamp = new LttngTimestamp(); | |
236 | clone.eventSource = new LttngEventSource(); | |
237 | clone.eventType = new LttngEventType(); | |
238 | clone.eventContent = new LttngEventContent(clone.currentLttngEvent); | |
239 | clone.eventReference = new LttngEventReference(this.getName()); | |
240 | ||
241 | // Create the skeleton event | |
242 | clone.currentLttngEvent = new LttngEvent(this, clone.eventTimestamp, clone.eventSource, clone.eventType, clone.eventContent, clone.eventReference, null); | |
243 | ||
244 | // Create a new current location | |
245 | clone.previousLocation = new LttngLocation(); | |
246 | ||
247 | // Set the currentEvent to the eventContent | |
248 | clone.eventContent.setEvent(clone.currentLttngEvent); | |
249 | ||
250 | // Set the start time of the trace | |
251 | setTimeRange(new TmfTimeRange( | |
252 | new LttngTimestamp(clone.currentJniTrace.getStartTime().getTime()), | |
253 | new LttngTimestamp(clone.currentJniTrace.getEndTime().getTime()) | |
254 | )); | |
255 | } | |
256 | catch (CloneNotSupportedException e) { | |
257 | } | |
258 | ||
259 | return clone; | |
260 | } | |
261 | ||
262 | ||
28b94d61 FC |
263 | /* |
264 | * Fill out the HashMap with "Type" (Tracefile/Marker) | |
265 | * | |
266 | * This should be called at construction once the trace is open | |
267 | */ | |
268 | private void initialiseEventTypes(JniTrace trace) { | |
269 | // Work variables | |
270 | LttngEventType tmpType = null; | |
271 | String[] markerFieldsLabels = null; | |
272 | ||
273 | String newTracefileKey = null; | |
274 | Integer newMarkerKey = null; | |
275 | ||
276 | JniTracefile newTracefile = null; | |
277 | JniMarker newMarker = null; | |
278 | ||
279 | // First, obtain an iterator on TRACEFILES of owned by the TRACE | |
280 | Iterator<String> tracefileItr = trace.getTracefilesMap().keySet().iterator(); | |
281 | while ( tracefileItr.hasNext() ) { | |
282 | newTracefileKey = tracefileItr.next(); | |
283 | newTracefile = trace.getTracefilesMap().get(newTracefileKey); | |
284 | ||
285 | // From the TRACEFILE read, obtain its MARKER | |
286 | Iterator<Integer> markerItr = newTracefile.getTracefileMarkersMap().keySet().iterator(); | |
287 | while ( markerItr.hasNext() ) { | |
288 | newMarkerKey = markerItr.next(); | |
289 | newMarker = newTracefile.getTracefileMarkersMap().get(newMarkerKey); | |
290 | ||
291 | // From the MARKER we can obtain the MARKERFIELDS keys (i.e. labels) | |
292 | markerFieldsLabels = newMarker.getMarkerFieldsHashMap().keySet().toArray( new String[newMarker.getMarkerFieldsHashMap().size()] ); | |
293 | tmpType = new LttngEventType(newTracefile.getTracefileName(), newTracefile.getCpuNumber(), newMarker.getName(), markerFieldsLabels ); | |
294 | ||
295 | // Add the type to the map/vector | |
296 | addEventTypeToMap(tmpType); | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | /* | |
302 | * Add a new type to the HashMap | |
303 | * | |
304 | * As the hashmap use a key format that is a bit dangerous to use, we should always add using this function. | |
305 | */ | |
306 | private void addEventTypeToMap(LttngEventType newEventType) { | |
307 | String newTypeKey = EventTypeKey.getEventTypeKey(newEventType); | |
308 | ||
309 | this.traceTypes.put(newTypeKey, newEventType); | |
310 | this.traceTypeNames.add(newTypeKey); | |
311 | } | |
312 | ||
550d787e FC |
313 | // /** |
314 | // * Index the current trace. | |
315 | // * | |
316 | // * @param useless This boolean is only to comply to the interface and will be ignored. | |
317 | // */ | |
318 | // @Override | |
319 | // public synchronized void indexTrace(boolean useless) { | |
320 | // | |
321 | // long nbEvents=0L; | |
322 | // | |
323 | // // Start time need to be null to detect none have been set | |
324 | // // LastTime need to exist so we can ajust it as we go | |
325 | // LttngTimestamp startTime = null; | |
326 | // LttngTimestamp lastTime = new LttngTimestamp(); | |
327 | // | |
328 | // // Position the trace at the beginning | |
329 | // TmfContext context = seekEvent( new LttngTimestamp(0L) ); | |
330 | // | |
331 | // // Read the first event and extract the location | |
332 | // LttngEvent tmpEvent = (LttngEvent)getNextEvent(context); | |
333 | // | |
334 | // // If we read the first event, define the start time. | |
335 | // if ( tmpEvent != null ) { | |
336 | // startTime = new LttngTimestamp( tmpEvent.getTimestamp() ); | |
337 | // lastTime.setValue(tmpEvent.getTimestamp().getValue()); | |
338 | // } | |
339 | // | |
340 | // // Now, we read each event until we hit the end of the trace | |
341 | // // We will create a new checkpoint every "getCacheSize()" event | |
342 | // while ( tmpEvent != null) { | |
343 | // // Update the last time each time we read a new event | |
344 | // lastTime.setValue(tmpEvent.getTimestamp().getValue()); | |
345 | // | |
346 | // // Save a check point if needed | |
347 | // if ((nbEvents++ % getCacheSize()) == 0) { | |
348 | // // *** IMPORTANT | |
349 | // // We need to NEW each stuff we put in checkpoint | |
350 | // // Otherwise everything will be the same! | |
351 | // LttngTimestamp tmpTimestamp = new LttngTimestamp( (LttngTimestamp)tmpEvent.getTimestamp() ); | |
352 | // LttngLocation newLocation = new LttngLocation( (LttngTimestamp)tmpEvent.getTimestamp() ); | |
353 | // | |
354 | // fCheckpoints.add(new TmfCheckpoint(tmpTimestamp, newLocation ) ); | |
355 | // } | |
356 | // // Read the next event | |
357 | // tmpEvent = (LttngEvent)getNextEvent(context); | |
358 | // } | |
359 | // | |
360 | // // If we have a start time, we should have an end time as well | |
361 | // // Issue the new range | |
362 | // if (startTime != null) { | |
363 | // setTimeRange( new TmfTimeRange(startTime, lastTime) ); | |
364 | // notifyListeners(getTimeRange() ); | |
365 | // } | |
366 | // | |
367 | // // Ajust the total number of event in the trace | |
368 | // fNbEvents = nbEvents; | |
369 | // //printCheckpointsVector(); | |
370 | // //printDebug = true; | |
371 | // } | |
7f2f49e3 WB |
372 | |
373 | /** | |
374 | * Return the latest saved location. | |
375 | * Note : Modifying the returned location may result in buggy positionning! | |
376 | * | |
377 | * @return The LttngLocation as it was after the last operation. | |
378 | * | |
379 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
380 | */ | |
381 | @Override | |
550d787e | 382 | public synchronized ITmfLocation<?> getCurrentLocation() { |
7f2f49e3 WB |
383 | return previousLocation; |
384 | } | |
385 | ||
386 | /** | |
387 | * Position the trace to the event at the given location.<p> | |
388 | * NOTE : Seeking by location is very fast compare to seeking by position | |
389 | * but is still slower than "ReadNext", avoid using it for small interval. | |
390 | * | |
391 | * @param location Location of the event in the trace. | |
392 | * If no event available at this exact location, we will position ourself to the next one. | |
393 | * | |
394 | * @return The TmfContext that point to this event | |
395 | * | |
396 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
397 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
398 | */ | |
fc6ccf6f FC |
399 | @Override |
400 | public synchronized TmfContext seekLocation(ITmfLocation<?> location) { | |
cb866e08 FC |
401 | |
402 | // // [lmcfrch] | |
403 | // lastTime = 0; | |
7f2f49e3 WB |
404 | |
405 | if ( printDebug == true ) { | |
406 | System.out.println("seekLocation(location) location -> " + location); | |
407 | } | |
408 | ||
409 | // If the location in context is null, create a new one | |
410 | LttngLocation curLocation = null; | |
411 | if ( location == null ) { | |
412 | curLocation = new LttngLocation(); | |
82e04272 FC |
413 | TmfContext context = seekEvent(curLocation.getOperationTime()); |
414 | context.setRank(ITmfContext.INITIAL_RANK); | |
415 | return context; | |
7f2f49e3 WB |
416 | } |
417 | else { | |
418 | curLocation = (LttngLocation)location; | |
419 | } | |
420 | ||
421 | // *** NOTE : | |
422 | // Update to location should (and will) be done in SeekEvent. | |
423 | ||
424 | // The only seek valid in LTTng is with the time, we call seekEvent(timestamp) | |
82e04272 FC |
425 | TmfContext context = seekEvent(curLocation.getOperationTime()); |
426 | ||
427 | // // Adjust the previousLocation flags | |
428 | // if (location instanceof LttngLocation) { | |
429 | // LttngLocation lttngLocation = (LttngLocation) location; | |
430 | // if (lttngLocation.isLastOperationReadNext()) { | |
431 | // previousLocation.setLastOperationReadNext(); | |
432 | // } else if (lttngLocation.isLastOperationParse()) { | |
433 | // previousLocation.setLastOperationParse(); | |
434 | // } else if (lttngLocation.isLastOperationSeek()) { | |
435 | // previousLocation.setLastOperationSeek(); | |
436 | // } | |
437 | // } | |
438 | ||
439 | return context; | |
7f2f49e3 WB |
440 | } |
441 | ||
442 | /** | |
443 | * Position the trace to the event at the given time.<p> | |
444 | * NOTE : Seeking by time is very fast compare to seeking by position | |
445 | * but is still slower than "ReadNext", avoid using it for small interval. | |
446 | * | |
447 | * @param timestamp Time of the event in the trace. | |
448 | * If no event available at this exact time, we will position ourself to the next one. | |
449 | * | |
450 | * @return The TmfContext that point to this event | |
451 | * | |
452 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
453 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
454 | */ | |
455 | @Override | |
456 | public synchronized TmfContext seekEvent(TmfTimestamp timestamp) { | |
457 | ||
cb866e08 | 458 | // // [lmcfrch] |
9b635e61 | 459 | // lastTime = 0; |
cb866e08 | 460 | |
7f2f49e3 WB |
461 | if ( printDebug == true ) { |
462 | System.out.println("seekEvent(timestamp) timestamp -> " + timestamp); | |
463 | } | |
464 | ||
465 | // Call JNI to seek | |
466 | currentJniTrace.seekToTime(new JniTime(timestamp.getValue())); | |
467 | ||
468 | // Save the time at which we seeked | |
469 | previousLocation.setOperationTime(timestamp.getValue()); | |
470 | // Set the operation marker as seek, to be able to detect we did "seek" this event | |
471 | previousLocation.setLastOperationSeek(); | |
472 | ||
473 | // *** VERIFY *** | |
474 | // Is that too paranoid? | |
475 | // | |
476 | // We don't trust what upper level could do with our internal location | |
477 | // so we create a new one to return instead | |
478 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
479 | ||
480 | return new TmfContext( curLocation ); | |
481 | } | |
482 | ||
483 | /** | |
484 | * Position the trace to the event at the given position (rank).<p> | |
485 | * NOTE : Seeking by position is very slow in LTTng, consider seeking by timestamp. | |
486 | * | |
487 | * @param position Position (or rank) of the event in the trace, starting at 0. | |
488 | * | |
489 | * @return The TmfContext that point to this event | |
490 | * | |
491 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
492 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
493 | */ | |
494 | @Override | |
495 | public synchronized TmfContext seekEvent(long position) { | |
496 | ||
cb866e08 FC |
497 | // // [lmcfrch] |
498 | // lastTime = 0; | |
499 | ||
7f2f49e3 WB |
500 | if ( printDebug == true ) { |
501 | System.out.println("seekEvent(position) position -> " + position); | |
502 | } | |
503 | ||
504 | TmfTimestamp timestamp = null; | |
505 | long index = position / getCacheSize(); | |
506 | ||
507 | // Get the timestamp of the closest check point to the given position | |
508 | if (fCheckpoints.size() > 0) { | |
509 | if (index >= fCheckpoints.size()) { | |
510 | index = fCheckpoints.size() - 1; | |
511 | } | |
512 | timestamp = (TmfTimestamp)fCheckpoints.elementAt((int)index).getTimestamp(); | |
513 | } | |
514 | // If none, take the start time of the trace | |
515 | else { | |
516 | timestamp = getStartTime(); | |
517 | } | |
518 | ||
519 | // Seek to the found time | |
520 | TmfContext tmpContext = seekEvent(timestamp); | |
521 | previousLocation = (LttngLocation)tmpContext.getLocation(); | |
522 | ||
523 | // Ajust the index of the event we found at this check point position | |
524 | Long currentPosition = index * getCacheSize(); | |
525 | ||
526 | Long lastTimeValueRead = 0L; | |
527 | ||
528 | // Get the event at current position. This won't move to the next one | |
529 | JniEvent tmpJniEvent = currentJniTrace.findNextEvent(); | |
530 | // Now that we are positionned at the checkpoint, | |
531 | // we need to "readNext" (Position - CheckpointPosition) times or until trace "run out" | |
532 | while ( (tmpJniEvent != null) && ( currentPosition < position ) ) { | |
533 | tmpJniEvent = currentJniTrace.readNextEvent(); | |
534 | currentPosition++; | |
535 | } | |
536 | ||
537 | // If we found our event, save its timestamp | |
538 | if ( tmpJniEvent != null ) { | |
539 | lastTimeValueRead = tmpJniEvent.getEventTime().getTime(); | |
540 | } | |
541 | ||
542 | // Set the operation marker as seek, to be able to detect we did "seek" this event | |
543 | previousLocation.setLastOperationSeek(); | |
544 | // Save read event time | |
545 | previousLocation.setOperationTime(lastTimeValueRead); | |
546 | ||
547 | // *** VERIFY *** | |
548 | // Is that too paranoid? | |
549 | // | |
550 | // We don't trust what upper level could do with our internal location | |
551 | // so we create a new one to return instead | |
552 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
553 | ||
554 | return new TmfContext( curLocation ); | |
555 | } | |
556 | ||
557 | /** | |
558 | * Return the event in the trace according to the given context. Read it if necessary.<p> | |
559 | * Similar (same?) as ParseEvent except that calling GetNext twice read the next one the second time. | |
560 | * | |
561 | * @param context Current TmfContext where to get the event | |
562 | * | |
563 | * @return The LttngEvent we read of null if no event are available | |
564 | * | |
565 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
566 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
567 | */ | |
550d787e FC |
568 | |
569 | public int nbEventsRead = 0; | |
7f2f49e3 WB |
570 | @Override |
571 | public synchronized LttngEvent getNextEvent(TmfContext context) { | |
572 | ||
573 | if ( printDebug == true ) { | |
574 | System.out.println("getNextEvent(context) context.getLocation() -> " + context.getLocation()); | |
575 | } | |
576 | ||
577 | LttngEvent returnedEvent = null; | |
578 | LttngLocation curLocation = null; | |
579 | ||
580 | // If the location in context is null, create a new one | |
581 | if ( context.getLocation() == null ) { | |
582 | curLocation = new LttngLocation(); | |
583 | context.setLocation(curLocation); | |
584 | } | |
585 | else { | |
586 | // Otherwise, we use the one in context; it should be a valid LttngLocation | |
587 | curLocation = (LttngLocation)context.getLocation(); | |
588 | } | |
589 | ||
9b635e61 FC |
590 | //// [lmcfrch] |
591 | // TmfContext savedContext = context.clone(); | |
592 | //// [/lmcfrch] | |
593 | ||
7f2f49e3 WB |
594 | // *** HACK *** |
595 | // TMF assumes it is possible to read (GetNextEvent) to the next Event once ParseEvent() is called | |
596 | // In LTTNG, there is not difference between "Parsing" and "Reading" an event. | |
597 | // Since parsing/reading invalidate the previous event, | |
4f259636 | 598 | // we need to make sure the sequence ParseEvent() -> GetNextEvent() will not actually move to the next event. |
7f2f49e3 WB |
599 | // To do so, we avoid moving for call to "GetNextEvent()" that follow call to a call to "ParseEvent()". |
600 | // However, calling ParseEvent() -> GetNextEvent() -> GetNextEvent() will only move next by one. | |
601 | ||
550d787e | 602 | // *** Positioning trick : |
7f2f49e3 WB |
603 | // GetNextEvent only read the trace if : |
604 | // 1- The last operation was NOT a ParseEvent --> A read is required | |
605 | // OR | |
606 | // 2- The time of the previous location is different from the current one --> A seek + a read is required | |
607 | if ( (curLocation.isLastOperationParse() != true) || | |
608 | (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue() ) ) | |
609 | { | |
610 | if ( previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue() ) { | |
611 | if ( printDebug == true ) { | |
612 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " + previousLocation.getOperationTimeValue() + " CurrentTime" + curLocation.getOperationTimeValue() + " ]"); | |
613 | } | |
614 | seekEvent( curLocation.getOperationTime() ); | |
615 | } | |
616 | // Read the next event from the trace. The last one will NO LONGER BE VALID. | |
617 | returnedEvent = readEvent(curLocation); | |
550d787e | 618 | nbEventsRead++; |
7f2f49e3 WB |
619 | |
620 | // Set the operation marker as read to both location, to be able to detect we did "read" this event | |
621 | previousLocation.setLastOperationReadNext(); | |
622 | curLocation.setLastOperationReadNext(); | |
623 | } | |
624 | else { | |
625 | // No event was read, just return the one currently loaded (the last one we read) | |
626 | returnedEvent = currentLttngEvent; | |
627 | ||
628 | // *** IMPORTANT! | |
629 | // Reset (erase) the operation marker to both location, to be able to detect we did NOT "read" this event | |
630 | previousLocation.resetLocationState(); | |
631 | curLocation.resetLocationState(); | |
632 | } | |
633 | ||
634 | // If we read an event, set it's time to the locations (both previous and current) | |
635 | if ( returnedEvent != null ) { | |
636 | previousLocation.setOperationTime((LttngTimestamp)returnedEvent.getTimestamp()); | |
637 | curLocation.setOperationTime((LttngTimestamp)returnedEvent.getTimestamp()); | |
9b635e61 FC |
638 | |
639 | //// [lmcfrch] | |
640 | // LttngLocation prevLocation = (LttngLocation) savedContext.getLocation(); | |
641 | // LttngLocation currLocation = (LttngLocation) context.getLocation(); | |
82e04272 FC |
642 | // if (prevLocation.equals(currLocation)) { |
643 | // System.out.println("Aie"); | |
644 | // } | |
9b635e61 FC |
645 | // Tracer.trace("Trc: " + context.getRank() + ": " + returnedEvent.getTimestamp().toString() + " (" + |
646 | // (prevLocation.isLastOperationParse() ? "T" : "F") + "," + (prevLocation.isLastOperationReadNext() ? "T" : "F") + "," + (prevLocation.isLastOperationSeek() ? "T" : "F") + "), (" + | |
647 | // (currLocation.isLastOperationParse() ? "T" : "F") + "," + (currLocation.isLastOperationReadNext() ? "T" : "F") + "," + (currLocation.isLastOperationSeek() ? "T" : "F") + ")" | |
648 | // ); | |
649 | //// [/lmcfrch] | |
650 | ||
550d787e FC |
651 | updateIndex(context, context.getRank(), returnedEvent.getTimestamp()); |
652 | context.updateRank(1); | |
7f2f49e3 | 653 | } |
cb866e08 | 654 | |
7f2f49e3 WB |
655 | return returnedEvent; |
656 | } | |
657 | ||
658 | ||
659 | /** | |
660 | * Return the event in the trace according to the given context. Read it if necessary.<p> | |
661 | * Similar (same?) as GetNextEvent except that calling ParseEvent twice will return the same event | |
662 | * | |
663 | * @param context Current TmfContext where to get the event | |
664 | * | |
665 | * @return The LttngEvent we read of null if no event are available | |
666 | * | |
667 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
668 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
669 | */ | |
670 | @Override | |
671 | public synchronized LttngEvent parseEvent(TmfContext context) { | |
672 | ||
673 | if ( printDebug == true ) { | |
674 | System.out.println("parseEvent(context) context.getLocation() -> " + context.getLocation()); | |
675 | } | |
676 | ||
677 | LttngEvent returnedEvent = null; | |
678 | LttngLocation curLocation = null; | |
679 | ||
680 | // If the location in context is null, create a new one | |
681 | if ( context.getLocation() == null ) { | |
682 | curLocation = new LttngLocation(); | |
683 | context.setLocation(curLocation); | |
684 | } | |
685 | // Otherwise, we use the one in context; it should be a valid LttngLocation | |
686 | else { | |
687 | curLocation = (LttngLocation)context.getLocation(); | |
688 | } | |
689 | ||
690 | // *** HACK *** | |
691 | // TMF assumes it is possible to read (GetNextEvent) to the next Event once ParseEvent() is called | |
692 | // In LTTNG, there is not difference between "Parsing" and "Reading" an event. | |
693 | // So, before "Parsing" an event, we have to make sure we didn't "Read" it alreafy. | |
694 | // Also, "Reading" invalidate the previous Event in LTTNG and seek back is very costly, | |
695 | // so calling twice "Parse" will return the same event, giving a way to get the "Currently loaded" event | |
696 | ||
697 | // *** Positionning trick : | |
698 | // ParseEvent only read the trace if : | |
699 | // 1- The last operation was NOT a ParseEvent or a GetNextEvent --> A read is required | |
700 | // OR | |
701 | // 2- The time of the previous location is different from the current one --> A seek + a read is required | |
702 | if ( ( (curLocation.isLastOperationParse() != true) && ((curLocation.isLastOperationReadNext() != true)) ) || | |
703 | (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue() ) ) | |
704 | { | |
705 | // Previous time != Current time : We need to reposition to the current time | |
706 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue() ) { | |
707 | if ( printDebug == true ) { | |
708 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " + previousLocation.getOperationTimeValue() + " CurrentTime" + curLocation.getOperationTimeValue() + " ]"); | |
709 | } | |
710 | seekEvent( curLocation.getOperationTime() ); | |
711 | } | |
712 | ||
713 | // Read the next event from the trace. The last one will NO LONGER BE VALID. | |
714 | returnedEvent = readEvent(curLocation); | |
715 | } | |
716 | else { | |
717 | // No event was read, just return the one currently loaded (the last one we read) | |
718 | returnedEvent = currentLttngEvent; | |
719 | } | |
720 | ||
721 | // If we read an event, set it's time to the locations (both previous and current) | |
722 | if ( returnedEvent != null ) { | |
723 | previousLocation.setOperationTime((LttngTimestamp)returnedEvent.getTimestamp()); | |
724 | curLocation.setOperationTime((LttngTimestamp)returnedEvent.getTimestamp()); | |
725 | } | |
726 | ||
727 | // Set the operation marker as parse to both location, to be able to detect we already "read" this event | |
728 | previousLocation.setLastOperationParse(); | |
729 | curLocation.setLastOperationParse(); | |
730 | ||
731 | return returnedEvent; | |
732 | } | |
733 | ||
734 | /* | |
735 | * Read the next event from the JNI and convert it as Lttng Event<p> | |
736 | * | |
737 | * @param location Current LttngLocation that to be updated with the event timestamp | |
738 | * | |
739 | * @return The LttngEvent we read of null if no event are available | |
740 | * | |
741 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
742 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
743 | */ | |
744 | private synchronized LttngEvent readEvent(LttngLocation location) { | |
745 | LttngEvent returnedEvent = null; | |
746 | JniEvent tmpEvent = null; | |
747 | ||
748 | // Read the next event from JNI. THIS WILL INVALIDATE THE CURRENT LTTNG EVENT. | |
749 | tmpEvent = currentJniTrace.readNextEvent(); | |
750 | ||
751 | if ( tmpEvent != null ) { | |
752 | // *** NOTE | |
753 | // Convert will update the currentLttngEvent | |
754 | returnedEvent = convertJniEventToTmf(tmpEvent); | |
755 | ||
756 | location.setOperationTime( (LttngTimestamp)returnedEvent.getTimestamp() ); | |
757 | } | |
758 | // *** NOTE | |
759 | // If the read failed (likely the last event in the trace), set the LastReadTime to the JNI time | |
760 | // That way, even if we try to read again, we will step over the bogus seek and read | |
761 | else { | |
762 | location.setOperationTime( getEndTime().getValue() + 1 ); | |
763 | } | |
764 | ||
765 | return returnedEvent; | |
766 | } | |
767 | ||
07d9e2ee FC |
768 | /** |
769 | * Method to convert a JniEvent into a LttngEvent.<p> | |
770 | * | |
5d10d135 ASL |
771 | * Note : This method will call LttngEvent convertEventJniToTmf(JniEvent, boolean) |
772 | * with a default value for isParsingNeeded | |
773 | * | |
07d9e2ee | 774 | * @param newEvent The JniEvent to convert into LttngEvent |
3fbd810a | 775 | * |
28b94d61 | 776 | * @return The converted LttngEvent |
3fbd810a | 777 | * |
28b94d61 FC |
778 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent |
779 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent | |
5d10d135 | 780 | */ |
b20696db | 781 | public synchronized LttngEvent convertJniEventToTmf(JniEvent newEvent) { |
28b94d61 FC |
782 | currentLttngEvent = convertJniEventToTmf(newEvent, IS_PARSING_NEEDED_DEFAULT); |
783 | ||
784 | return currentLttngEvent; | |
5d10d135 ASL |
785 | } |
786 | ||
07d9e2ee | 787 | /** |
28b94d61 | 788 | * Method to convert a JniEvent into a LttngEvent |
5d10d135 | 789 | * |
07d9e2ee | 790 | * @param jniEvent The JniEvent to convert into LttngEvent |
5d10d135 | 791 | * @param isParsingNeeded A boolean value telling if the event should be parsed or not. |
3fbd810a | 792 | * |
28b94d61 | 793 | * @return The converted LttngEvent |
3fbd810a | 794 | * |
28b94d61 FC |
795 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent |
796 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent | |
5d10d135 | 797 | */ |
b20696db | 798 | public synchronized LttngEvent convertJniEventToTmf(JniEvent jniEvent, boolean isParsingNeeded) { |
fafd6325 WB |
799 | |
800 | if ( uniqueEvent == true ) { | |
801 | ||
802 | // *** | |
803 | // UNHACKED : We can no longer do that because TCF need to maintain several events at once. | |
804 | // This is very slow to do so in LTTng, this has to be temporary. | |
805 | // *** HACK *** | |
806 | // To save time here, we only set value instead of allocating new object | |
807 | // This give an HUGE performance improvement | |
808 | // all allocation done in the LttngTrace constructor | |
809 | // *** | |
810 | eventTimestamp.setValue(jniEvent.getEventTime().getTime()); | |
811 | eventSource.setSourceId(jniEvent.requestEventSource()); | |
812 | ||
813 | eventType = traceTypes.get( EventTypeKey.getEventTypeKey(jniEvent) ); | |
814 | ||
815 | eventReference.setValue(jniEvent.getParentTracefile().getTracefilePath()); | |
816 | eventReference.setTracepath(this.getName()); | |
817 | ||
818 | eventContent.emptyContent(); | |
819 | ||
820 | currentLttngEvent.setType(eventType); | |
821 | // Save the jni reference | |
822 | currentLttngEvent.updateJniEventReference(jniEvent); | |
823 | ||
824 | // Parse now if was asked | |
825 | // Warning : THIS IS SLOW | |
826 | if (isParsingNeeded == true ) { | |
827 | eventContent.getFields(); | |
828 | } | |
829 | ||
830 | return currentLttngEvent; | |
831 | } | |
832 | else { | |
4f259636 | 833 | return convertJniEventToTmfMultipleEventEvilFix(jniEvent, isParsingNeeded); |
fafd6325 WB |
834 | } |
835 | ||
836 | } | |
837 | ||
838 | /** | |
839 | * This method is a temporary fix to support multiple events at once in TMF | |
840 | * This is expected to be slow and should be fixed in another way. | |
841 | * See comment in convertJniEventToTmf(); | |
842 | * | |
843 | * @param jniEvent The current JNI Event | |
844 | * @return Current Lttng Event fully parsed | |
845 | */ | |
4f259636 | 846 | private synchronized LttngEvent convertJniEventToTmfMultipleEventEvilFix(JniEvent jniEvent, boolean isParsingNeeded) { |
fafd6325 WB |
847 | // *** HACK *** |
848 | // Below : the "fix" with all the new and the full-parse | |
849 | // Allocating new memory is slow. | |
850 | // Parsing every events is very slow. | |
851 | eventTimestamp = new LttngTimestamp(jniEvent.getEventTime().getTime()); | |
852 | eventSource = new LttngEventSource(jniEvent.requestEventSource()); | |
853 | eventReference = new LttngEventReference(jniEvent.getParentTracefile().getTracefilePath(), this.getName()); | |
854 | eventType = new LttngEventType(traceTypes.get( EventTypeKey.getEventTypeKey(jniEvent) )); | |
855 | eventContent = new LttngEventContent(currentLttngEvent); | |
b7f0ec69 | 856 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, null); |
28b94d61 | 857 | |
fafd6325 | 858 | // The jni reference is no longer reliable but we will keep it anyhow |
a3fe52fc | 859 | currentLttngEvent.updateJniEventReference(jniEvent); |
fafd6325 WB |
860 | // Ensure that the content is correctly set |
861 | eventContent.setEvent(currentLttngEvent); | |
4f259636 WB |
862 | |
863 | // Parse the event if it was needed | |
864 | // *** WARNING *** | |
865 | // ONLY for testing, NOT parsing events with non-unique events WILL result in segfault in the JVM | |
866 | if ( isParsingNeeded == true ) { | |
867 | eventContent.getFields(); | |
868 | } | |
fafd6325 | 869 | |
28b94d61 | 870 | return currentLttngEvent; |
5d10d135 ASL |
871 | } |
872 | ||
fafd6325 WB |
873 | |
874 | ||
3fbd810a | 875 | /** |
07d9e2ee FC |
876 | * Reference to the current LttngTrace we are reading from.<p> |
877 | * | |
878 | * Note : This bypass the framework and should not be use, except for testing! | |
879 | * | |
880 | * @return Reference to the current LttngTrace | |
3fbd810a | 881 | * |
28b94d61 | 882 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace |
3fbd810a FC |
883 | */ |
884 | public JniTrace getCurrentJniTrace() { | |
885 | return currentJniTrace; | |
886 | } | |
887 | ||
888 | ||
889 | /** | |
890 | * Return a reference to the current LttngEvent we have in memory. | |
891 | * | |
07d9e2ee FC |
892 | * @return The current (last read) LttngEvent |
893 | * | |
3fbd810a FC |
894 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent |
895 | */ | |
550d787e | 896 | public synchronized LttngEvent getCurrentEvent() { |
3fbd810a FC |
897 | return currentLttngEvent; |
898 | } | |
899 | ||
a3fe52fc FC |
900 | /** |
901 | * Get the major version number for the current trace | |
902 | * | |
903 | * @return Version major or -1 if unknown | |
904 | * | |
905 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
906 | * | |
907 | */ | |
908 | public short getVersionMajor() { | |
909 | if ( currentJniTrace!= null ) { | |
910 | return currentJniTrace.getLttMajorVersion(); | |
911 | } | |
912 | else { | |
913 | return -1; | |
914 | } | |
915 | } | |
916 | ||
917 | /** | |
918 | * Get the minor version number for the current trace | |
919 | * | |
920 | * @return Version minor or -1 if unknown | |
921 | * | |
922 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
923 | * | |
924 | */ | |
925 | public short getVersionMinor() { | |
926 | if ( currentJniTrace!= null ) { | |
927 | return currentJniTrace.getLttMinorVersion(); | |
928 | } | |
929 | else { | |
930 | return -1; | |
931 | } | |
932 | } | |
933 | ||
934 | /** | |
935 | * Get the number of CPU for this trace | |
936 | * | |
937 | * @return Number of CPU or -1 if unknown | |
938 | * | |
939 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
940 | * | |
941 | */ | |
942 | public int getCpuNumber() { | |
943 | if ( currentJniTrace!= null ) { | |
944 | return currentJniTrace.getCpuNumber(); | |
945 | } | |
946 | else { | |
947 | return -1; | |
948 | } | |
949 | } | |
950 | ||
7f2f49e3 WB |
951 | /** |
952 | * Print the content of the checkpoint vector.<p> | |
953 | * | |
954 | * This is intended for debug purpose only. | |
955 | */ | |
956 | public void printCheckpointsVector() { | |
957 | System.out.println("StartTime : " + getTimeRange().getStartTime().getValue()); | |
958 | System.out.println("EndTime : " + getTimeRange().getEndTime().getValue()); | |
a55a769e WB |
959 | |
960 | for ( int pos=0; pos < fCheckpoints.size(); pos++) { | |
a55a769e WB |
961 | System.out.print(pos + ": " + "\t"); |
962 | System.out.print( fCheckpoints.get(pos).getTimestamp() + "\t" ); | |
963 | System.out.println( fCheckpoints.get(pos).getLocation() ); | |
964 | } | |
965 | } | |
966 | ||
7f2f49e3 WB |
967 | /** |
968 | * Return a String identifying this trace. | |
969 | * | |
970 | * @return String that identify this trace | |
971 | */ | |
a55a769e | 972 | @Override |
7f2f49e3 WB |
973 | public String toString() { |
974 | String returnedData=""; | |
a55a769e | 975 | |
7f2f49e3 WB |
976 | returnedData += "Path :" + getPath() + " "; |
977 | returnedData += "Trace:" + currentJniTrace + " "; | |
978 | returnedData += "Event:" + currentLttngEvent; | |
a55a769e | 979 | |
7f2f49e3 | 980 | return returnedData; |
a55a769e | 981 | } |
cb866e08 | 982 | |
28b94d61 FC |
983 | } |
984 | ||
985 | /* | |
986 | * EventTypeKey inner class | |
987 | * | |
988 | * This class is used to make the process of generating the HashMap key more transparent and so less error prone to use | |
989 | * | |
990 | */ | |
991 | class EventTypeKey { | |
992 | //*** WARNING *** | |
993 | // These two getEventTypeKey() functions should ALWAYS construct the key the same ways! | |
994 | // Otherwise, every type search will fail! | |
995 | ||
996 | static public String getEventTypeKey(LttngEventType newEventType) { | |
997 | String key = newEventType.getTracefileName() + "/" + newEventType.getCpuId().toString() + "/" + newEventType.getMarkerName(); | |
998 | ||
999 | return key; | |
1000 | } | |
3fbd810a | 1001 | |
28b94d61 FC |
1002 | static public String getEventTypeKey(JniEvent newEvent) { |
1003 | String key = newEvent.getParentTracefile().getTracefileName() + "/" + newEvent.getParentTracefile().getCpuNumber() + "/" + newEvent.requestEventMarker().getName(); | |
1004 | ||
1005 | return key; | |
1006 | } | |
1007 | ||
e31e01e8 | 1008 | } |