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5d10d135 | 1 | /******************************************************************************* |
a3767fd9 | 2 | * Copyright (c) 2009, 2011 Ericsson, MontaVista Software |
5d10d135 ASL |
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 | |
a3767fd9 | 11 | * Yufen Kuo (ykuo@mvista.com) - add support to allow user specify trace library path |
5d10d135 ASL |
12 | *******************************************************************************/ |
13 | ||
14 | package org.eclipse.linuxtools.lttng.trace; | |
15 | ||
12c155f5 | 16 | import java.io.FileNotFoundException; |
28b94d61 FC |
17 | import java.util.HashMap; |
18 | import java.util.Iterator; | |
19 | import java.util.Vector; | |
20 | ||
12c155f5 FC |
21 | import org.eclipse.core.resources.IProject; |
22 | import org.eclipse.linuxtools.lttng.TraceHelper; | |
5d10d135 ASL |
23 | import org.eclipse.linuxtools.lttng.event.LttngEvent; |
24 | import org.eclipse.linuxtools.lttng.event.LttngEventContent; | |
25 | import org.eclipse.linuxtools.lttng.event.LttngEventReference; | |
28b94d61 | 26 | import org.eclipse.linuxtools.lttng.event.LttngEventSource; |
5d10d135 | 27 | import org.eclipse.linuxtools.lttng.event.LttngEventType; |
9f584e4c | 28 | import org.eclipse.linuxtools.lttng.event.LttngLocation; |
5d10d135 | 29 | import org.eclipse.linuxtools.lttng.event.LttngTimestamp; |
c392540b | 30 | import org.eclipse.linuxtools.lttng.exceptions.LttngException; |
5d10d135 | 31 | import org.eclipse.linuxtools.lttng.jni.JniEvent; |
28b94d61 | 32 | import org.eclipse.linuxtools.lttng.jni.JniMarker; |
5d10d135 | 33 | import org.eclipse.linuxtools.lttng.jni.JniTrace; |
28b94d61 | 34 | import org.eclipse.linuxtools.lttng.jni.JniTracefile; |
004f471b | 35 | import org.eclipse.linuxtools.lttng.jni.common.JniTime; |
550d787e | 36 | import org.eclipse.linuxtools.lttng.jni.exception.JniException; |
004f471b | 37 | import org.eclipse.linuxtools.lttng.jni.factory.JniTraceFactory; |
5d10d135 ASL |
38 | import org.eclipse.linuxtools.tmf.event.TmfTimeRange; |
39 | import org.eclipse.linuxtools.tmf.event.TmfTimestamp; | |
82e04272 | 40 | import org.eclipse.linuxtools.tmf.trace.ITmfContext; |
9f584e4c | 41 | import org.eclipse.linuxtools.tmf.trace.ITmfLocation; |
64fe8e8a | 42 | import org.eclipse.linuxtools.tmf.trace.TmfCheckpoint; |
9f584e4c | 43 | import org.eclipse.linuxtools.tmf.trace.TmfContext; |
5d10d135 | 44 | import org.eclipse.linuxtools.tmf.trace.TmfTrace; |
5d10d135 | 45 | |
3fbd810a | 46 | class LTTngTraceException extends LttngException { |
12c155f5 | 47 | static final long serialVersionUID = -1636648737081868146L; |
3fbd810a | 48 | |
12c155f5 FC |
49 | public LTTngTraceException(String errMsg) { |
50 | super(errMsg); | |
51 | } | |
3fbd810a FC |
52 | } |
53 | ||
5d10d135 | 54 | /** |
64fe8e8a FC |
55 | * <b><u>LTTngTrace</u></b> |
56 | * <p> | |
07d9e2ee | 57 | * |
12c155f5 FC |
58 | * LTTng trace implementation. It accesses the C trace handling library (seeking, reading and parsing) through the JNI |
59 | * component. | |
5d10d135 | 60 | */ |
e31e01e8 | 61 | public class LTTngTrace extends TmfTrace<LttngEvent> { |
9b635e61 | 62 | |
12c155f5 FC |
63 | public static boolean PrintDebug = false; |
64 | public static boolean UniqueEvent = true; | |
65 | ||
66 | private final static boolean SHOW_LTT_DEBUG_DEFAULT = false; | |
67 | private final static boolean IS_PARSING_NEEDED_DEFAULT = !UniqueEvent; | |
68 | private final static int CHECKPOINT_PAGE_SIZE = 50000; | |
69 | ||
70 | // Reference to our JNI trace | |
71 | private JniTrace currentJniTrace = null; | |
72 | ||
73 | // *** | |
74 | // UNHACKED : We can no longer do that because TCF need to maintain several | |
75 | // events at once. | |
76 | // This is very slow to do so in LTTng, this has to be temporary. | |
77 | // *** HACK *** | |
78 | // To save time, we will declare all component of the LttngEvent during the | |
79 | // construction of the trace | |
80 | // Then, while reading the trace, we will just SET the values instead of | |
81 | // declaring new object | |
82 | // *** | |
83 | LttngTimestamp eventTimestamp = null; | |
84 | LttngEventSource eventSource = null; | |
85 | LttngEventContent eventContent = null; | |
86 | LttngEventReference eventReference = null; | |
87 | ||
88 | // The actual event | |
89 | LttngEvent currentLttngEvent = null; | |
90 | ||
91 | // The current location | |
92 | LttngLocation previousLocation = null; | |
93 | ||
94 | LttngEventType eventType = null; | |
95 | // Hashmap of the possible types of events (Tracefile/CPU/Marker in the JNI) | |
96 | HashMap<Integer, LttngEventType> traceTypes = null; | |
97 | // This vector will be used to quickly find a marker name from a position | |
98 | Vector<Integer> traceTypeNames = null; | |
99 | private String traceLibPath = null; | |
100 | ||
101 | public LTTngTrace() { | |
102 | } | |
103 | ||
104 | public boolean validate(IProject project, String path) { | |
105 | if (super.validate(project, path)) { | |
106 | String traceLibPath = TraceHelper.getTraceLibDirFromProject(project); | |
107 | try { | |
108 | LTTngTraceVersion version = new LTTngTraceVersion(path, traceLibPath); | |
109 | return version.isValidLttngTrace(); | |
110 | } catch (LttngException e) { | |
111 | } | |
112 | } | |
113 | return false; | |
114 | } | |
115 | ||
116 | @Override | |
117 | public void initTrace(String path, Class<LttngEvent> eventType, boolean indexTrace) throws FileNotFoundException { | |
118 | super.initTrace(path, eventType, indexTrace); | |
119 | try { | |
120 | currentJniTrace = JniTraceFactory.getJniTrace(path, traceLibPath, SHOW_LTT_DEBUG_DEFAULT); | |
121 | } catch (Exception e) { | |
122 | throw new FileNotFoundException(e.getMessage()); | |
123 | } | |
124 | ||
125 | // Export all the event types from the JNI side | |
126 | traceTypes = new HashMap<Integer, LttngEventType>(); | |
127 | traceTypeNames = new Vector<Integer>(); | |
128 | initialiseEventTypes(currentJniTrace); | |
129 | ||
00641a97 | 130 | // Build the re-used event structure |
12c155f5 FC |
131 | eventTimestamp = new LttngTimestamp(); |
132 | eventSource = new LttngEventSource(); | |
133 | this.eventType = new LttngEventType(); | |
134 | eventContent = new LttngEventContent(currentLttngEvent); | |
135 | eventReference = new LttngEventReference(this.getName()); | |
136 | ||
137 | // Create the skeleton event | |
138 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, this.eventType, eventContent, | |
139 | eventReference, null); | |
140 | ||
141 | // Create a new current location | |
142 | previousLocation = new LttngLocation(); | |
143 | ||
144 | // Set the currentEvent to the eventContent | |
145 | eventContent.setEvent(currentLttngEvent); | |
146 | ||
12c155f5 FC |
147 | // Set the time range of the trace |
148 | TmfContext context = seekLocation(null); | |
149 | LttngEvent event = getNextEvent(context); | |
150 | LttngTimestamp startTime = new LttngTimestamp(event.getTimestamp()); | |
151 | LttngTimestamp endTime = new LttngTimestamp(currentJniTrace.getEndTime().getTime()); | |
152 | ||
153 | setTimeRange(new TmfTimeRange(startTime, endTime)); | |
154 | } | |
155 | ||
156 | /** | |
157 | * Default Constructor. | |
158 | * <p> | |
159 | * | |
160 | * @param path | |
161 | * Path to a <b>directory</b> that contain an LTTng trace. | |
162 | * | |
163 | * @exception Exception | |
164 | * (most likely LTTngTraceException or FileNotFoundException) | |
165 | */ | |
166 | public LTTngTrace(String path) throws Exception { | |
167 | // Call with "wait for completion" true and "skip indexing" false | |
168 | this(path, null, true, false); | |
169 | } | |
170 | ||
171 | /** | |
172 | * Constructor, with control over the indexing. | |
173 | * <p> | |
174 | * | |
175 | * @param path | |
176 | * Path to a <b>directory</b> that contain an LTTng trace. | |
177 | * @param waitForCompletion | |
178 | * Should we wait for indexign to complete before moving on. | |
179 | * | |
180 | * @exception Exception | |
181 | * (most likely LTTngTraceException or FileNotFoundException) | |
182 | */ | |
183 | public LTTngTrace(String path, boolean waitForCompletion) throws Exception { | |
184 | // Call with "skip indexing" false | |
185 | this(path, null, waitForCompletion, false); | |
186 | } | |
187 | ||
188 | /** | |
189 | * Default constructor, with control over the indexing and possibility to bypass indexation | |
190 | * <p> | |
191 | * | |
192 | * @param path | |
193 | * Path to a <b>directory</b> that contain an LTTng trace. | |
194 | * @param traceLibPath | |
a3767fd9 | 195 | * Path to a <b>directory</b> that contains LTTng trace libraries. |
12c155f5 FC |
196 | * @param waitForCompletion |
197 | * Should we wait for indexign to complete before moving on. | |
198 | * @param bypassIndexing | |
199 | * Should we bypass indexing completly? This is should only be useful for unit testing. | |
200 | * | |
201 | * @exception Exception | |
202 | * (most likely LTTngTraceException or FileNotFoundException) | |
203 | * | |
204 | */ | |
205 | public LTTngTrace(String path, String traceLibPath, boolean waitForCompletion, boolean bypassIndexing) | |
206 | throws Exception { | |
207 | super(path, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE, false); | |
00641a97 | 208 | initTrace(path, LttngEvent.class, !bypassIndexing); |
12c155f5 | 209 | this.traceLibPath = traceLibPath; |
12c155f5 | 210 | |
00641a97 FC |
211 | // try { |
212 | // currentJniTrace = JniTraceFactory.getJniTrace(path, traceLibPath, SHOW_LTT_DEBUG_DEFAULT); | |
213 | // } catch (Exception e) { | |
214 | // throw new FileNotFoundException(e.getMessage()); | |
215 | // } | |
216 | // | |
217 | // // Export all the event types from the JNI side | |
218 | // traceTypes = new HashMap<Integer, LttngEventType>(); | |
219 | // traceTypeNames = new Vector<Integer>(); | |
220 | // initialiseEventTypes(currentJniTrace); | |
221 | // | |
222 | // // *** VERIFY *** | |
223 | // // Verify that all those "default constructor" are safe to use | |
224 | // eventTimestamp = new LttngTimestamp(); | |
225 | // eventSource = new LttngEventSource(); | |
226 | // eventType = new LttngEventType(); | |
227 | // eventContent = new LttngEventContent(currentLttngEvent); | |
228 | // eventReference = new LttngEventReference(this.getName()); | |
229 | // | |
230 | // // Create the skeleton event | |
231 | // currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, | |
232 | // null); | |
233 | // | |
234 | // // Create a new current location | |
235 | // previousLocation = new LttngLocation(); | |
236 | // | |
237 | // // Set the currentEvent to the eventContent | |
238 | // eventContent.setEvent(currentLttngEvent); | |
239 | // | |
240 | // // // Bypass indexing if asked | |
241 | // // if ( bypassIndexing == false ) { | |
242 | // // indexTrace(true); | |
243 | // // } | |
244 | // // else { | |
245 | // // Even if we don't have any index, set ONE checkpoint | |
246 | // // fCheckpoints.add(new TmfCheckpoint(new LttngTimestamp(0L) , new | |
247 | // // LttngLocation() ) ); | |
248 | // | |
249 | // // Set the time range of the trace | |
250 | // TmfContext context = seekLocation(null); | |
251 | // LttngEvent event = getNextEvent(context); | |
252 | // LttngTimestamp startTime = new LttngTimestamp(event.getTimestamp()); | |
253 | // LttngTimestamp endTime = new LttngTimestamp(currentJniTrace.getEndTime().getTime()); | |
254 | // | |
255 | // setTimeRange(new TmfTimeRange(startTime, endTime)); | |
12c155f5 FC |
256 | } |
257 | ||
258 | /* | |
259 | * Copy constructor is forbidden for LttngEvenmStream | |
260 | */ | |
00641a97 FC |
261 | public LTTngTrace(LTTngTrace other) throws Exception { |
262 | this(other.getPath(), other.getTraceLibPath(), false, true); | |
263 | this.fCheckpoints = other.fCheckpoints; | |
264 | setTimeRange(new TmfTimeRange(new LttngTimestamp(other.getStartTime()), new LttngTimestamp(other.getEndTime()))); | |
12c155f5 FC |
265 | } |
266 | ||
d4011df2 | 267 | @Override |
12c155f5 FC |
268 | public LTTngTrace copy() { |
269 | LTTngTrace returnedTrace = null; | |
270 | ||
271 | try { | |
272 | returnedTrace = new LTTngTrace(this); | |
273 | } catch (Exception e) { | |
274 | System.out | |
275 | .println("ERROR : Could not create LTTngTrace copy (createTraceCopy).\nError is : " + e.getStackTrace()); //$NON-NLS-1$ | |
276 | } | |
277 | ||
278 | return returnedTrace; | |
9aae0442 | 279 | } |
12c155f5 | 280 | |
550d787e | 281 | @Override |
9b635e61 | 282 | public synchronized LTTngTrace clone() { |
12c155f5 FC |
283 | LTTngTrace clone = null; |
284 | try { | |
285 | clone = (LTTngTrace) super.clone(); | |
286 | try { | |
287 | clone.currentJniTrace = JniTraceFactory.getJniTrace(getPath(), getTraceLibPath(), | |
288 | SHOW_LTT_DEBUG_DEFAULT); | |
289 | } catch (JniException e) { | |
290 | // e.printStackTrace(); | |
291 | } | |
292 | ||
293 | // Export all the event types from the JNI side | |
294 | clone.traceTypes = new HashMap<Integer, LttngEventType>(); | |
295 | clone.traceTypeNames = new Vector<Integer>(); | |
296 | clone.initialiseEventTypes(clone.currentJniTrace); | |
297 | ||
298 | // Verify that all those "default constructor" are safe to use | |
299 | clone.eventTimestamp = new LttngTimestamp(); | |
300 | clone.eventSource = new LttngEventSource(); | |
301 | clone.eventType = new LttngEventType(); | |
302 | clone.eventContent = new LttngEventContent(clone.currentLttngEvent); | |
303 | clone.eventReference = new LttngEventReference(this.getName()); | |
304 | ||
305 | // Create the skeleton event | |
306 | clone.currentLttngEvent = new LttngEvent(this, clone.eventTimestamp, clone.eventSource, clone.eventType, | |
307 | clone.eventContent, clone.eventReference, null); | |
308 | ||
309 | // Create a new current location | |
310 | clone.previousLocation = new LttngLocation(); | |
311 | ||
312 | // Set the currentEvent to the eventContent | |
313 | clone.eventContent.setEvent(clone.currentLttngEvent); | |
314 | ||
315 | // Set the start time of the trace | |
316 | setTimeRange(new TmfTimeRange(new LttngTimestamp(clone.currentJniTrace.getStartTime().getTime()), | |
317 | new LttngTimestamp(clone.currentJniTrace.getEndTime().getTime()))); | |
318 | } catch (CloneNotSupportedException e) { | |
319 | } | |
320 | ||
321 | return clone; | |
322 | } | |
323 | ||
324 | public String getTraceLibPath() { | |
325 | return traceLibPath; | |
326 | } | |
327 | ||
328 | /* | |
329 | * Fill out the HashMap with "Type" (Tracefile/Marker) | |
330 | * | |
331 | * This should be called at construction once the trace is open | |
332 | */ | |
333 | private void initialiseEventTypes(JniTrace trace) { | |
334 | // Work variables | |
335 | LttngEventType tmpType = null; | |
336 | String[] markerFieldsLabels = null; | |
337 | ||
338 | String newTracefileKey = null; | |
339 | Integer newMarkerKey = null; | |
340 | ||
341 | JniTracefile newTracefile = null; | |
342 | JniMarker newMarker = null; | |
343 | ||
344 | // First, obtain an iterator on TRACEFILES of owned by the TRACE | |
345 | Iterator<String> tracefileItr = trace.getTracefilesMap().keySet().iterator(); | |
346 | ||
347 | while (tracefileItr.hasNext()) { | |
348 | newTracefileKey = tracefileItr.next(); | |
349 | newTracefile = trace.getTracefilesMap().get(newTracefileKey); | |
350 | ||
351 | // From the TRACEFILE read, obtain its MARKER | |
352 | Iterator<Integer> markerItr = newTracefile.getTracefileMarkersMap().keySet().iterator(); | |
353 | while (markerItr.hasNext()) { | |
354 | newMarkerKey = markerItr.next(); | |
355 | newMarker = newTracefile.getTracefileMarkersMap().get(newMarkerKey); | |
356 | ||
357 | // From the MARKER we can obtain the MARKERFIELDS keys (i.e. | |
358 | // labels) | |
359 | markerFieldsLabels = newMarker.getMarkerFieldsHashMap().keySet() | |
360 | .toArray(new String[newMarker.getMarkerFieldsHashMap().size()]); | |
361 | ||
362 | tmpType = new LttngEventType(newTracefile.getTracefileName(), newTracefile.getCpuNumber(), | |
363 | newMarker.getName(), newMarkerKey.intValue(), markerFieldsLabels); | |
364 | ||
365 | // Add the type to the map/vector | |
366 | addEventTypeToMap(tmpType); | |
367 | } | |
368 | } | |
369 | } | |
370 | ||
371 | /* | |
372 | * Add a new type to the HashMap | |
373 | * | |
374 | * As the hashmap use a key format that is a bit dangerous to use, we should always add using this function. | |
375 | */ | |
376 | private void addEventTypeToMap(LttngEventType newEventType) { | |
377 | int newTypeKey = EventTypeKey.getEventTypeHash(newEventType); | |
378 | ||
379 | this.traceTypes.put(newTypeKey, newEventType); | |
380 | this.traceTypeNames.add(newTypeKey); | |
381 | } | |
382 | ||
383 | // /** | |
384 | // * Index the current trace. | |
385 | // * | |
386 | // * @param useless This boolean is only to comply to the interface and will | |
387 | // be ignored. | |
388 | // */ | |
389 | // @Override | |
390 | // public synchronized void indexTrace(boolean useless) { | |
391 | // | |
392 | // long nbEvents=0L; | |
393 | // | |
394 | // // Start time need to be null to detect none have been set | |
395 | // // LastTime need to exist so we can ajust it as we go | |
396 | // LttngTimestamp startTime = null; | |
397 | // LttngTimestamp lastTime = new LttngTimestamp(); | |
398 | // | |
399 | // // Position the trace at the beginning | |
400 | // TmfContext context = seekEvent( new LttngTimestamp(0L) ); | |
401 | // | |
402 | // // Read the first event and extract the location | |
403 | // LttngEvent tmpEvent = (LttngEvent)getNextEvent(context); | |
404 | // | |
405 | // // If we read the first event, define the start time. | |
406 | // if ( tmpEvent != null ) { | |
407 | // startTime = new LttngTimestamp( tmpEvent.getTimestamp() ); | |
408 | // lastTime.setValue(tmpEvent.getTimestamp().getValue()); | |
409 | // } | |
410 | // | |
411 | // // Now, we read each event until we hit the end of the trace | |
412 | // // We will create a new checkpoint every "getCacheSize()" event | |
413 | // while ( tmpEvent != null) { | |
414 | // // Update the last time each time we read a new event | |
415 | // lastTime.setValue(tmpEvent.getTimestamp().getValue()); | |
416 | // | |
417 | // // Save a check point if needed | |
418 | // if ((nbEvents++ % getCacheSize()) == 0) { | |
419 | // // *** IMPORTANT | |
420 | // // We need to NEW each stuff we put in checkpoint | |
421 | // // Otherwise everything will be the same! | |
422 | // LttngTimestamp tmpTimestamp = new LttngTimestamp( | |
423 | // (LttngTimestamp)tmpEvent.getTimestamp() ); | |
424 | // LttngLocation newLocation = new LttngLocation( | |
425 | // (LttngTimestamp)tmpEvent.getTimestamp() ); | |
426 | // | |
427 | // fCheckpoints.add(new TmfCheckpoint(tmpTimestamp, newLocation ) ); | |
428 | // } | |
429 | // // Read the next event | |
430 | // tmpEvent = (LttngEvent)getNextEvent(context); | |
431 | // } | |
432 | // | |
433 | // // If we have a start time, we should have an end time as well | |
434 | // // Issue the new range | |
435 | // if (startTime != null) { | |
436 | // setTimeRange( new TmfTimeRange(startTime, lastTime) ); | |
437 | // notifyListeners(getTimeRange() ); | |
438 | // } | |
439 | // | |
440 | // // Ajust the total number of event in the trace | |
441 | // fNbEvents = nbEvents; | |
442 | // //printCheckpointsVector(); | |
443 | // //printDebug = true; | |
444 | // } | |
445 | ||
446 | /** | |
447 | * Return the latest saved location. Note : Modifying the returned location may result in buggy positionning! | |
448 | * | |
449 | * @return The LttngLocation as it was after the last operation. | |
450 | * | |
451 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
452 | */ | |
453 | @Override | |
454 | public synchronized ITmfLocation<?> getCurrentLocation() { | |
455 | return previousLocation; | |
456 | } | |
457 | ||
458 | /** | |
459 | * Position the trace to the event at the given location. | |
460 | * <p> | |
461 | * NOTE : Seeking by location is very fast compare to seeking by position but is still slower than "ReadNext", avoid | |
462 | * using it for small interval. | |
463 | * | |
464 | * @param location | |
465 | * Location of the event in the trace. If no event available at this exact location, we will position | |
466 | * ourself to the next one. | |
467 | * | |
468 | * @return The TmfContext that point to this event | |
469 | * | |
470 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
471 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
472 | */ | |
473 | @Override | |
474 | public synchronized TmfContext seekLocation(ITmfLocation<?> location) { | |
475 | ||
476 | // // [lmcfrch] | |
477 | // lastTime = 0; | |
478 | ||
479 | if (PrintDebug) { | |
480 | System.out.println("seekLocation(location) location -> " + location); //$NON-NLS-1$ | |
481 | } | |
482 | ||
483 | // If the location in context is null, create a new one | |
484 | LttngLocation curLocation = null; | |
485 | if (location == null) { | |
486 | curLocation = new LttngLocation(); | |
487 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
488 | context.setRank(ITmfContext.INITIAL_RANK); | |
489 | return context; | |
490 | } else { | |
491 | curLocation = (LttngLocation) location; | |
492 | } | |
493 | ||
494 | // *** NOTE : | |
495 | // Update to location should (and will) be done in SeekEvent. | |
496 | ||
497 | // The only seek valid in LTTng is with the time, we call | |
498 | // seekEvent(timestamp) | |
499 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
500 | ||
501 | // // Adjust the previousLocation flags | |
502 | // if (location instanceof LttngLocation) { | |
503 | // LttngLocation lttngLocation = (LttngLocation) location; | |
504 | // if (lttngLocation.isLastOperationReadNext()) { | |
505 | // previousLocation.setLastOperationReadNext(); | |
506 | // } else if (lttngLocation.isLastOperationParse()) { | |
507 | // previousLocation.setLastOperationParse(); | |
508 | // } else if (lttngLocation.isLastOperationSeek()) { | |
509 | // previousLocation.setLastOperationSeek(); | |
510 | // } | |
511 | // } | |
512 | ||
513 | return context; | |
514 | } | |
515 | ||
516 | /** | |
517 | * Position the trace to the event at the given time. | |
518 | * <p> | |
519 | * NOTE : Seeking by time is very fast compare to seeking by position but is still slower than "ReadNext", avoid | |
520 | * using it for small interval. | |
521 | * | |
522 | * @param timestamp | |
523 | * Time of the event in the trace. If no event available at this exact time, we will position ourself to | |
524 | * the next one. | |
525 | * | |
526 | * @return The TmfContext that point to this event | |
527 | * | |
528 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
529 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
530 | */ | |
531 | @Override | |
532 | public synchronized TmfContext seekEvent(TmfTimestamp timestamp) { | |
533 | ||
534 | // // [lmcfrch] | |
535 | // lastTime = 0; | |
536 | ||
537 | if (PrintDebug) { | |
538 | System.out.println("seekEvent(timestamp) timestamp -> " + timestamp); //$NON-NLS-1$ | |
539 | } | |
540 | ||
541 | // Call JNI to seek | |
542 | currentJniTrace.seekToTime(new JniTime(timestamp.getValue())); | |
543 | ||
544 | // Save the time at which we seeked | |
545 | previousLocation.setOperationTime(timestamp.getValue()); | |
546 | // Set the operation marker as seek, to be able to detect we did "seek" | |
547 | // this event | |
548 | previousLocation.setLastOperationSeek(); | |
549 | ||
550 | // *** VERIFY *** | |
551 | // Is that too paranoid? | |
552 | // | |
553 | // We don't trust what upper level could do with our internal location | |
554 | // so we create a new one to return instead | |
555 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
556 | ||
557 | return new TmfContext(curLocation); | |
558 | } | |
559 | ||
560 | /** | |
561 | * Position the trace to the event at the given position (rank). | |
562 | * <p> | |
563 | * NOTE : Seeking by position is very slow in LTTng, consider seeking by timestamp. | |
564 | * | |
565 | * @param position | |
566 | * Position (or rank) of the event in the trace, starting at 0. | |
567 | * | |
568 | * @return The TmfContext that point to this event | |
569 | * | |
570 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
571 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
572 | */ | |
573 | @Override | |
574 | public synchronized TmfContext seekEvent(long position) { | |
575 | ||
576 | if (PrintDebug) { | |
577 | System.out.println("seekEvent(position) position -> " + position); //$NON-NLS-1$ | |
578 | } | |
579 | ||
580 | TmfTimestamp timestamp = null; | |
581 | long index = position / getCacheSize(); | |
582 | ||
583 | // Get the timestamp of the closest check point to the given position | |
584 | if (fCheckpoints.size() > 0) { | |
585 | if (index >= fCheckpoints.size()) { | |
586 | index = fCheckpoints.size() - 1; | |
587 | } | |
588 | timestamp = fCheckpoints.elementAt((int) index).getTimestamp(); | |
589 | } | |
590 | // If none, take the start time of the trace | |
591 | else { | |
592 | timestamp = getStartTime(); | |
593 | } | |
594 | ||
595 | // Seek to the found time | |
596 | TmfContext tmpContext = seekEvent(timestamp); | |
597 | tmpContext.setRank((index + 1) * fIndexPageSize); | |
598 | previousLocation = (LttngLocation) tmpContext.getLocation(); | |
599 | ||
600 | // Ajust the index of the event we found at this check point position | |
601 | Long currentPosition = index * getCacheSize(); | |
602 | ||
603 | Long lastTimeValueRead = 0L; | |
604 | ||
605 | // Get the event at current position. This won't move to the next one | |
606 | JniEvent tmpJniEvent = currentJniTrace.findNextEvent(); | |
607 | // Now that we are positionned at the checkpoint, | |
608 | // we need to "readNext" (Position - CheckpointPosition) times or until | |
609 | // trace "run out" | |
610 | while ((tmpJniEvent != null) && (currentPosition < position)) { | |
611 | tmpJniEvent = currentJniTrace.readNextEvent(); | |
612 | currentPosition++; | |
613 | } | |
614 | ||
615 | // If we found our event, save its timestamp | |
616 | if (tmpJniEvent != null) { | |
617 | lastTimeValueRead = tmpJniEvent.getEventTime().getTime(); | |
618 | } | |
619 | ||
620 | // Set the operation marker as seek, to be able to detect we did "seek" | |
621 | // this event | |
622 | previousLocation.setLastOperationSeek(); | |
623 | // Save read event time | |
624 | previousLocation.setOperationTime(lastTimeValueRead); | |
625 | ||
626 | // *** VERIFY *** | |
627 | // Is that too paranoid? | |
628 | // | |
629 | // We don't trust what upper level could do with our internal location | |
630 | // so we create a new one to return instead | |
631 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
632 | ||
633 | return new TmfContext(curLocation); | |
634 | } | |
635 | ||
636 | @Override | |
637 | public TmfContext seekLocation(double ratio) { | |
638 | // TODO Auto-generated method stub | |
639 | return null; | |
640 | } | |
641 | ||
642 | @Override | |
643 | public double getLocationRatio(ITmfLocation<?> location) { | |
644 | // TODO Auto-generated method stub | |
645 | return 0; | |
646 | } | |
647 | ||
648 | /** | |
649 | * Return the event in the trace according to the given context. Read it if necessary. | |
650 | * <p> | |
651 | * Similar (same?) as ParseEvent except that calling GetNext twice read the next one the second time. | |
652 | * | |
653 | * @param context | |
654 | * Current TmfContext where to get the event | |
655 | * | |
656 | * @return The LttngEvent we read of null if no event are available | |
657 | * | |
658 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
659 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
660 | */ | |
661 | ||
662 | public int nbEventsRead = 0; | |
663 | ||
664 | @Override | |
665 | public synchronized LttngEvent getNextEvent(TmfContext context) { | |
666 | ||
667 | if (PrintDebug) { | |
668 | System.out.println("getNextEvent(context) context.getLocation() -> " //$NON-NLS-1$ | |
669 | + context.getLocation()); | |
670 | } | |
671 | ||
672 | LttngEvent returnedEvent = null; | |
673 | LttngLocation curLocation = null; | |
674 | ||
675 | curLocation = (LttngLocation) context.getLocation(); | |
676 | // If the location in context is null, create a new one | |
677 | if (curLocation == null) { | |
678 | curLocation = getCurrentLocation(context); | |
679 | } | |
680 | ||
681 | // // [lmcfrch] | |
682 | // TmfContext savedContext = context.clone(); | |
683 | // // [/lmcfrch] | |
684 | ||
685 | // *** HACK *** | |
686 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
687 | // once ParseEvent() is called | |
688 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
689 | // event. | |
690 | // Since parsing/reading invalidate the previous event, | |
691 | // we need to make sure the sequence ParseEvent() -> GetNextEvent() will | |
692 | // not actually move to the next event. | |
693 | // To do so, we avoid moving for call to "GetNextEvent()" that follow | |
694 | // call to a call to "ParseEvent()". | |
695 | // However, calling ParseEvent() -> GetNextEvent() -> GetNextEvent() | |
696 | // will only move next by one. | |
697 | ||
698 | // *** Positioning trick : | |
699 | // GetNextEvent only read the trace if : | |
700 | // 1- The last operation was NOT a ParseEvent --> A read is required | |
701 | // OR | |
702 | // 2- The time of the previous location is different from the current | |
703 | // one --> A seek + a read is required | |
704 | if ((!(curLocation.isLastOperationParse())) | |
705 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
706 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
707 | if (PrintDebug) { | |
708 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ | |
709 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
710 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
711 | } | |
712 | seekEvent(curLocation.getOperationTime()); | |
713 | } | |
714 | // Read the next event from the trace. The last one will NO LONGER | |
715 | // BE VALID. | |
716 | returnedEvent = readNextEvent(curLocation); | |
717 | ||
718 | } else { | |
719 | // No event was read, just return the one currently loaded (the last | |
720 | // one we read) | |
721 | returnedEvent = currentLttngEvent; | |
722 | ||
723 | // *** IMPORTANT! | |
724 | // Reset (erase) the operation marker to both location, to be able | |
725 | // to detect we did NOT "read" this event | |
726 | previousLocation.resetLocationState(); | |
727 | curLocation.resetLocationState(); | |
728 | } | |
729 | ||
730 | // If we read an event, set it's time to the locations (both previous | |
731 | // and current) | |
732 | if (returnedEvent != null) { | |
733 | setPreviousAndCurrentTimes(context, returnedEvent, curLocation); | |
734 | ||
735 | // // [lmcfrch] | |
736 | // LttngLocation prevLocation = (LttngLocation) | |
737 | // savedContext.getLocation(); | |
738 | // LttngLocation currLocation = (LttngLocation) | |
739 | // context.getLocation(); | |
740 | // if (prevLocation.equals(currLocation)) { | |
741 | // System.out.println("Aie"); | |
742 | // } | |
743 | // Tracer.trace("Trc: " + context.getRank() + ": " + | |
744 | // returnedEvent.getTimestamp().toString() + " (" + | |
745 | // (prevLocation.isLastOperationParse() ? "T" : "F") + "," + | |
746 | // (prevLocation.isLastOperationReadNext() ? "T" : "F") + "," + | |
747 | // (prevLocation.isLastOperationSeek() ? "T" : "F") + "), (" + | |
748 | // (currLocation.isLastOperationParse() ? "T" : "F") + "," + | |
749 | // (currLocation.isLastOperationReadNext() ? "T" : "F") + "," + | |
750 | // (currLocation.isLastOperationSeek() ? "T" : "F") + ")" | |
751 | // ); | |
752 | // // [/lmcfrch] | |
753 | ||
754 | } | |
755 | ||
756 | return returnedEvent; | |
757 | } | |
758 | ||
759 | // this method was extracted for profiling purposes | |
760 | private void setPreviousAndCurrentTimes(TmfContext context, LttngEvent returnedEvent, LttngLocation curLocation) { | |
761 | ||
762 | TmfTimestamp eventTimestamp = returnedEvent.getTimestamp(); | |
763 | // long eventTime = eventTimestamp.getValue(); | |
764 | previousLocation.setOperationTime(eventTimestamp.getValue()); | |
765 | curLocation.setOperationTime(eventTimestamp.getValue()); | |
766 | updateIndex(context, context.getRank(), eventTimestamp); | |
767 | context.updateRank(1); | |
768 | } | |
769 | ||
770 | protected void updateIndex(TmfContext context, long rank, TmfTimestamp timestamp) { | |
771 | ||
772 | if (getStartTime().compareTo(timestamp, false) > 0) | |
773 | setStartTime(timestamp); | |
774 | if (getEndTime().compareTo(timestamp, false) < 0) | |
775 | setEndTime(timestamp); | |
776 | if (rank != ITmfContext.UNKNOWN_RANK) { | |
777 | if (fNbEvents <= rank) | |
778 | fNbEvents = rank + 1; | |
779 | // Build the index as we go along | |
780 | if ((rank % fIndexPageSize) == 0) { | |
781 | // Determine the table position | |
782 | long position = rank / fIndexPageSize; | |
783 | // Add new entry at proper location (if empty) | |
784 | if (fCheckpoints.size() == position) { | |
785 | addCheckPoint(context, timestamp); | |
786 | } | |
787 | } | |
788 | } | |
789 | } | |
790 | ||
791 | private void addCheckPoint(TmfContext context, TmfTimestamp timestamp) { | |
792 | ITmfLocation<?> location = context.getLocation().clone(); | |
793 | fCheckpoints.add(new TmfCheckpoint(timestamp.clone(), location)); | |
794 | } | |
795 | ||
796 | // this method was extracted for profiling purposes | |
797 | private LttngEvent readNextEvent(LttngLocation curLocation) { | |
798 | LttngEvent returnedEvent; | |
799 | // Read the next event from the trace. The last one will NO LONGER BE | |
800 | // VALID. | |
801 | returnedEvent = readEvent(curLocation); | |
802 | nbEventsRead++; | |
803 | ||
804 | // Set the operation marker as read to both location, to be able to | |
805 | // detect we did "read" this event | |
806 | previousLocation.setLastOperationReadNext(); | |
807 | curLocation.setLastOperationReadNext(); | |
808 | return returnedEvent; | |
809 | } | |
810 | ||
811 | // this method was extracted for profiling purposes | |
812 | private LttngLocation getCurrentLocation(TmfContext context) { | |
813 | LttngLocation curLocation; | |
814 | curLocation = new LttngLocation(); | |
815 | context.setLocation(curLocation); | |
816 | return curLocation; | |
817 | } | |
818 | ||
819 | /** | |
820 | * Return the event in the trace according to the given context. Read it if necessary. | |
821 | * <p> | |
822 | * Similar (same?) as GetNextEvent except that calling ParseEvent twice will return the same event | |
823 | * | |
824 | * @param context | |
825 | * Current TmfContext where to get the event | |
826 | * | |
827 | * @return The LttngEvent we read of null if no event are available | |
828 | * | |
829 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
830 | * @see org.eclipse.linuxtools.tmf.trace.TmfContext | |
831 | */ | |
832 | @Override | |
833 | public synchronized LttngEvent parseEvent(TmfContext context) { | |
834 | ||
835 | if (PrintDebug) { | |
836 | System.out.println("parseEvent(context) context.getLocation() -> " //$NON-NLS-1$ | |
837 | + context.getLocation()); | |
838 | } | |
839 | ||
840 | LttngEvent returnedEvent = null; | |
841 | LttngLocation curLocation = null; | |
842 | ||
843 | // If the location in context is null, create a new one | |
844 | if (context.getLocation() == null) { | |
845 | curLocation = new LttngLocation(); | |
846 | context.setLocation(curLocation); | |
847 | } | |
848 | // Otherwise, we use the one in context; it should be a valid | |
849 | // LttngLocation | |
850 | else { | |
851 | curLocation = (LttngLocation) context.getLocation(); | |
852 | } | |
853 | ||
854 | // *** HACK *** | |
855 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
856 | // once ParseEvent() is called | |
857 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
858 | // event. | |
859 | // So, before "Parsing" an event, we have to make sure we didn't "Read" | |
860 | // it alreafy. | |
861 | // Also, "Reading" invalidate the previous Event in LTTNG and seek back | |
862 | // is very costly, | |
863 | // so calling twice "Parse" will return the same event, giving a way to | |
864 | // get the "Currently loaded" event | |
865 | ||
866 | // *** Positionning trick : | |
867 | // ParseEvent only read the trace if : | |
868 | // 1- The last operation was NOT a ParseEvent or a GetNextEvent --> A | |
869 | // read is required | |
870 | // OR | |
871 | // 2- The time of the previous location is different from the current | |
872 | // one --> A seek + a read is required | |
873 | if (((!(curLocation.isLastOperationParse())) && ((!(curLocation.isLastOperationReadNext())))) | |
874 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
875 | // Previous time != Current time : We need to reposition to the | |
876 | // current time | |
877 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
878 | if (PrintDebug) { | |
879 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ | |
880 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
881 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
882 | } | |
883 | seekEvent(curLocation.getOperationTime()); | |
884 | } | |
885 | ||
886 | // Read the next event from the trace. The last one will NO LONGER | |
887 | // BE VALID. | |
888 | returnedEvent = readEvent(curLocation); | |
889 | } else { | |
890 | // No event was read, just return the one currently loaded (the last | |
891 | // one we read) | |
892 | returnedEvent = currentLttngEvent; | |
893 | } | |
894 | ||
895 | // If we read an event, set it's time to the locations (both previous | |
896 | // and current) | |
897 | if (returnedEvent != null) { | |
898 | previousLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
899 | curLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
900 | } | |
901 | ||
902 | // Set the operation marker as parse to both location, to be able to | |
903 | // detect we already "read" this event | |
904 | previousLocation.setLastOperationParse(); | |
905 | curLocation.setLastOperationParse(); | |
906 | ||
907 | return returnedEvent; | |
908 | } | |
909 | ||
910 | /* | |
911 | * Read the next event from the JNI and convert it as Lttng Event<p> | |
912 | * | |
913 | * @param location Current LttngLocation that to be updated with the event timestamp | |
914 | * | |
915 | * @return The LttngEvent we read of null if no event are available | |
916 | * | |
917 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
918 | * | |
919 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
920 | */ | |
921 | private synchronized LttngEvent readEvent(LttngLocation location) { | |
922 | LttngEvent returnedEvent = null; | |
923 | JniEvent tmpEvent = null; | |
924 | ||
925 | // Read the next event from JNI. THIS WILL INVALIDATE THE CURRENT LTTNG | |
926 | // EVENT. | |
927 | tmpEvent = currentJniTrace.readNextEvent(); | |
928 | ||
929 | if (tmpEvent != null) { | |
930 | // *** NOTE | |
931 | // Convert will update the currentLttngEvent | |
932 | returnedEvent = convertJniEventToTmf(tmpEvent); | |
933 | ||
934 | location.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
935 | } | |
936 | // *** NOTE | |
937 | // If the read failed (likely the last event in the trace), set the | |
938 | // LastReadTime to the JNI time | |
939 | // That way, even if we try to read again, we will step over the bogus | |
940 | // seek and read | |
941 | else { | |
942 | location.setOperationTime(getEndTime().getValue() + 1); | |
943 | } | |
944 | ||
945 | return returnedEvent; | |
946 | } | |
947 | ||
948 | /** | |
949 | * Method to convert a JniEvent into a LttngEvent. | |
950 | * <p> | |
951 | * | |
952 | * Note : This method will call LttngEvent convertEventJniToTmf(JniEvent, boolean) with a default value for | |
953 | * isParsingNeeded | |
954 | * | |
955 | * @param newEvent | |
956 | * The JniEvent to convert into LttngEvent | |
957 | * | |
958 | * @return The converted LttngEvent | |
959 | * | |
960 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
961 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent | |
962 | */ | |
963 | public synchronized LttngEvent convertJniEventToTmf(JniEvent newEvent) { | |
964 | currentLttngEvent = convertJniEventToTmf(newEvent, IS_PARSING_NEEDED_DEFAULT); | |
965 | ||
966 | return currentLttngEvent; | |
967 | } | |
968 | ||
969 | /** | |
970 | * Method to convert a JniEvent into a LttngEvent | |
971 | * | |
972 | * @param jniEvent | |
973 | * The JniEvent to convert into LttngEvent | |
974 | * @param isParsingNeeded | |
975 | * A boolean value telling if the event should be parsed or not. | |
976 | * | |
977 | * @return The converted LttngEvent | |
978 | * | |
979 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
980 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent | |
981 | */ | |
982 | public synchronized LttngEvent convertJniEventToTmf(JniEvent jniEvent, boolean isParsingNeeded) { | |
983 | ||
984 | if (UniqueEvent) { | |
985 | ||
986 | // *** | |
987 | // UNHACKED : We can no longer do that because TCF need to maintain | |
988 | // several events at once. | |
989 | // This is very slow to do so in LTTng, this has to be temporary. | |
990 | // *** HACK *** | |
991 | // To save time here, we only set value instead of allocating new | |
992 | // object | |
993 | // This give an HUGE performance improvement | |
994 | // all allocation done in the LttngTrace constructor | |
995 | // *** | |
996 | eventTimestamp.setValue(jniEvent.getEventTime().getTime()); | |
997 | eventSource.setSourceId(jniEvent.requestEventSource()); | |
998 | ||
999 | eventType = traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent)); | |
1000 | ||
1001 | eventReference.setValue(jniEvent.getParentTracefile().getTracefilePath()); | |
1002 | eventReference.setTracepath(this.getName()); | |
1003 | ||
1004 | eventContent.emptyContent(); | |
1005 | ||
1006 | currentLttngEvent.setType(eventType); | |
1007 | // Save the jni reference | |
1008 | currentLttngEvent.updateJniEventReference(jniEvent); | |
1009 | ||
1010 | // Parse now if was asked | |
1011 | // Warning : THIS IS SLOW | |
1012 | if (isParsingNeeded) { | |
1013 | eventContent.getFields(); | |
1014 | } | |
1015 | ||
1016 | return currentLttngEvent; | |
1017 | } else { | |
1018 | return convertJniEventToTmfMultipleEventEvilFix(jniEvent, isParsingNeeded); | |
1019 | } | |
1020 | ||
1021 | } | |
1022 | ||
1023 | /** | |
1024 | * This method is a temporary fix to support multiple events at once in TMF This is expected to be slow and should | |
1025 | * be fixed in another way. See comment in convertJniEventToTmf(); | |
1026 | * | |
1027 | * @param jniEvent | |
1028 | * The current JNI Event | |
1029 | * @return Current Lttng Event fully parsed | |
1030 | */ | |
1031 | private synchronized LttngEvent convertJniEventToTmfMultipleEventEvilFix(JniEvent jniEvent, boolean isParsingNeeded) { | |
1032 | // *** HACK *** | |
1033 | // Below : the "fix" with all the new and the full-parse | |
1034 | // Allocating new memory is slow. | |
1035 | // Parsing every events is very slow. | |
1036 | eventTimestamp = new LttngTimestamp(jniEvent.getEventTime().getTime()); | |
1037 | eventSource = new LttngEventSource(jniEvent.requestEventSource()); | |
1038 | eventReference = new LttngEventReference(jniEvent.getParentTracefile().getTracefilePath(), this.getName()); | |
1039 | eventType = new LttngEventType(traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent))); | |
1040 | eventContent = new LttngEventContent(currentLttngEvent); | |
1041 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, | |
1042 | null); | |
1043 | ||
1044 | // The jni reference is no longer reliable but we will keep it anyhow | |
1045 | currentLttngEvent.updateJniEventReference(jniEvent); | |
1046 | // Ensure that the content is correctly set | |
1047 | eventContent.setEvent(currentLttngEvent); | |
1048 | ||
1049 | // Parse the event if it was needed | |
1050 | // *** WARNING *** | |
1051 | // ONLY for testing, NOT parsing events with non-unique events WILL | |
1052 | // result in segfault in the JVM | |
1053 | if (isParsingNeeded) { | |
1054 | eventContent.getFields(); | |
1055 | } | |
1056 | ||
1057 | return currentLttngEvent; | |
1058 | } | |
1059 | ||
1060 | /** | |
1061 | * Reference to the current LttngTrace we are reading from. | |
1062 | * <p> | |
1063 | * | |
1064 | * Note : This bypass the framework and should not be use, except for testing! | |
1065 | * | |
1066 | * @return Reference to the current LttngTrace | |
1067 | * | |
1068 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1069 | */ | |
1070 | public JniTrace getCurrentJniTrace() { | |
1071 | return currentJniTrace; | |
1072 | } | |
1073 | ||
1074 | /** | |
1075 | * Return a reference to the current LttngEvent we have in memory. | |
1076 | * | |
1077 | * @return The current (last read) LttngEvent | |
1078 | * | |
1079 | * @see org.eclipse.linuxtools.lttng.event.LttngEvent | |
1080 | */ | |
1081 | public synchronized LttngEvent getCurrentEvent() { | |
1082 | return currentLttngEvent; | |
1083 | } | |
1084 | ||
1085 | /** | |
1086 | * Get the major version number for the current trace | |
1087 | * | |
1088 | * @return Version major or -1 if unknown | |
1089 | * | |
1090 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1091 | * | |
1092 | */ | |
1093 | public short getVersionMajor() { | |
1094 | if (currentJniTrace != null) { | |
1095 | return currentJniTrace.getLttMajorVersion(); | |
1096 | } else { | |
1097 | return -1; | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | /** | |
1102 | * Get the minor version number for the current trace | |
1103 | * | |
1104 | * @return Version minor or -1 if unknown | |
1105 | * | |
1106 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1107 | * | |
1108 | */ | |
1109 | public short getVersionMinor() { | |
1110 | if (currentJniTrace != null) { | |
1111 | return currentJniTrace.getLttMinorVersion(); | |
1112 | } else { | |
1113 | return -1; | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | /** | |
1118 | * Get the number of CPU for this trace | |
1119 | * | |
1120 | * @return Number of CPU or -1 if unknown | |
1121 | * | |
1122 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1123 | * | |
1124 | */ | |
1125 | public int getCpuNumber() { | |
1126 | if (currentJniTrace != null) { | |
1127 | return currentJniTrace.getCpuNumber(); | |
1128 | } else { | |
1129 | return -1; | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | /** | |
1134 | * Print the content of the checkpoint vector. | |
1135 | * <p> | |
1136 | * | |
1137 | * This is intended for debug purpose only. | |
1138 | */ | |
1139 | public void printCheckpointsVector() { | |
1140 | System.out.println("StartTime : " //$NON-NLS-1$ | |
1141 | + getTimeRange().getStartTime().getValue()); | |
1142 | System.out.println("EndTime : " //$NON-NLS-1$ | |
1143 | + getTimeRange().getEndTime().getValue()); | |
1144 | ||
1145 | for (int pos = 0; pos < fCheckpoints.size(); pos++) { | |
1146 | System.out.print(pos + ": " + "\t"); //$NON-NLS-1$ //$NON-NLS-2$ | |
1147 | System.out.print(fCheckpoints.get(pos).getTimestamp() + "\t"); //$NON-NLS-1$ | |
1148 | System.out.println(fCheckpoints.get(pos).getLocation()); | |
1149 | } | |
1150 | } | |
1151 | ||
1152 | @Override | |
1153 | public synchronized void dispose() { | |
1154 | if (currentJniTrace != null) | |
1155 | currentJniTrace.closeTrace(); | |
1156 | super.dispose(); | |
1157 | } | |
1158 | ||
1159 | /** | |
1160 | * Return a String identifying this trace. | |
1161 | * | |
1162 | * @return String that identify this trace | |
1163 | */ | |
1164 | @Override | |
3b38ea61 | 1165 | @SuppressWarnings("nls") |
12c155f5 FC |
1166 | public String toString() { |
1167 | String returnedData = ""; | |
64fe8e8a | 1168 | |
12c155f5 FC |
1169 | returnedData += "Path :" + getPath() + " "; |
1170 | returnedData += "Trace:" + currentJniTrace + " "; | |
1171 | returnedData += "Event:" + currentLttngEvent; | |
64fe8e8a | 1172 | |
12c155f5 FC |
1173 | return returnedData; |
1174 | } | |
cb866e08 | 1175 | |
28b94d61 FC |
1176 | } |
1177 | ||
1178 | /* | |
1179 | * EventTypeKey inner class | |
1180 | * | |
12c155f5 | 1181 | * This class is used to make the process of generating the HashMap key more transparent and so less error prone to use |
28b94d61 | 1182 | */ |
64fe8e8a | 1183 | final class EventTypeKey { |
12c155f5 FC |
1184 | // *** WARNING *** |
1185 | // These two getEventTypeKey() functions should ALWAYS construct the key the | |
1186 | // same ways! | |
1187 | // Otherwise, every type search will fail! | |
64fe8e8a | 1188 | |
12c155f5 FC |
1189 | // added final to encourage inlining. |
1190 | ||
1191 | // generating a hash code by hand to avoid a string creation | |
1192 | final static public int getEventTypeHash(LttngEventType newEventType) { | |
1193 | return generateHash(newEventType.getTracefileName(), newEventType.getCpuId(), newEventType.getMarkerName()); | |
1194 | } | |
1195 | ||
1196 | final private static int generateHash(String traceFileName, long cpuNumber, String markerName) { | |
1197 | // 0x1337 is a prime number. The number of CPUs is always under 8192 on | |
1198 | // the current kernel, so this will work with the current linux kernel. | |
1199 | int cpuHash = (int) (cpuNumber * (0x1337)); | |
1200 | return traceFileName.hashCode() ^ (cpuHash) ^ markerName.hashCode(); | |
1201 | } | |
1202 | ||
1203 | // generating a hash code by hand to avoid a string creation | |
1204 | final static public int getEventTypeHash(JniEvent newEvent) { | |
1205 | return generateHash(newEvent.getParentTracefile().getTracefileName(), newEvent.getParentTracefile() | |
1206 | .getCpuNumber(), newEvent.requestEventMarker().getName()); | |
1207 | } | |
64fe8e8a | 1208 | |
a3767fd9 | 1209 | } |