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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 | ||
6c13869b | 14 | package org.eclipse.linuxtools.lttng.core.trace; |
5d10d135 | 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 | 21 | import org.eclipse.core.resources.IProject; |
6c13869b FC |
22 | import org.eclipse.linuxtools.lttng.core.TraceHelper; |
23 | import org.eclipse.linuxtools.lttng.core.event.LttngEvent; | |
24 | import org.eclipse.linuxtools.lttng.core.event.LttngEventContent; | |
6c13869b FC |
25 | import org.eclipse.linuxtools.lttng.core.event.LttngEventType; |
26 | import org.eclipse.linuxtools.lttng.core.event.LttngLocation; | |
27 | import org.eclipse.linuxtools.lttng.core.event.LttngTimestamp; | |
28 | import org.eclipse.linuxtools.lttng.core.exceptions.LttngException; | |
1b70b6dc | 29 | import org.eclipse.linuxtools.lttng.core.tracecontrol.utility.LiveTraceManager; |
5d10d135 | 30 | import org.eclipse.linuxtools.lttng.jni.JniEvent; |
28b94d61 | 31 | import org.eclipse.linuxtools.lttng.jni.JniMarker; |
5d10d135 | 32 | import org.eclipse.linuxtools.lttng.jni.JniTrace; |
28b94d61 | 33 | import org.eclipse.linuxtools.lttng.jni.JniTracefile; |
004f471b | 34 | import org.eclipse.linuxtools.lttng.jni.common.JniTime; |
550d787e | 35 | import org.eclipse.linuxtools.lttng.jni.exception.JniException; |
004f471b | 36 | import org.eclipse.linuxtools.lttng.jni.factory.JniTraceFactory; |
4df4581d | 37 | import org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp; |
1b70b6dc | 38 | import org.eclipse.linuxtools.tmf.core.event.TmfEvent; |
6c13869b FC |
39 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; |
40 | import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp; | |
1b70b6dc PT |
41 | import org.eclipse.linuxtools.tmf.core.experiment.TmfExperiment; |
42 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType; | |
43 | import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest; | |
44 | import org.eclipse.linuxtools.tmf.core.signal.TmfTraceUpdatedSignal; | |
6c13869b FC |
45 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
46 | import org.eclipse.linuxtools.tmf.core.trace.ITmfLocation; | |
47 | import org.eclipse.linuxtools.tmf.core.trace.TmfCheckpoint; | |
48 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; | |
49 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; | |
5d10d135 | 50 | |
3fbd810a | 51 | class LTTngTraceException extends LttngException { |
12c155f5 | 52 | static final long serialVersionUID = -1636648737081868146L; |
3fbd810a | 53 | |
12c155f5 FC |
54 | public LTTngTraceException(String errMsg) { |
55 | super(errMsg); | |
56 | } | |
3fbd810a FC |
57 | } |
58 | ||
5d10d135 | 59 | /** |
64fe8e8a FC |
60 | * <b><u>LTTngTrace</u></b> |
61 | * <p> | |
07d9e2ee | 62 | * |
12c155f5 FC |
63 | * LTTng trace implementation. It accesses the C trace handling library (seeking, reading and parsing) through the JNI |
64 | * component. | |
5d10d135 | 65 | */ |
e31e01e8 | 66 | public class LTTngTrace extends TmfTrace<LttngEvent> { |
9b635e61 | 67 | |
12c155f5 FC |
68 | public static boolean PrintDebug = false; |
69 | public static boolean UniqueEvent = true; | |
70 | ||
71 | private final static boolean SHOW_LTT_DEBUG_DEFAULT = false; | |
72 | private final static boolean IS_PARSING_NEEDED_DEFAULT = !UniqueEvent; | |
73 | private final static int CHECKPOINT_PAGE_SIZE = 50000; | |
1b70b6dc | 74 | private final static long LTTNG_STREAMING_INTERVAL = 2000; // in ms |
12c155f5 FC |
75 | |
76 | // Reference to our JNI trace | |
c5b45b39 FC |
77 | private JniTrace currentJniTrace; |
78 | ||
79 | LttngTimestamp eventTimestamp; | |
99005796 | 80 | String eventSource; |
c5b45b39 | 81 | LttngEventContent eventContent; |
4641c2f7 | 82 | String eventReference; |
12c155f5 FC |
83 | |
84 | // The actual event | |
c5b45b39 | 85 | LttngEvent currentLttngEvent; |
12c155f5 FC |
86 | |
87 | // The current location | |
c5b45b39 FC |
88 | LttngLocation previousLocation; |
89 | ||
90 | LttngEventType eventType; | |
12c155f5 | 91 | |
12c155f5 | 92 | // Hashmap of the possible types of events (Tracefile/CPU/Marker in the JNI) |
c5b45b39 FC |
93 | HashMap<Integer, LttngEventType> traceTypes; |
94 | ||
12c155f5 | 95 | // This vector will be used to quickly find a marker name from a position |
c5b45b39 FC |
96 | Vector<Integer> traceTypeNames; |
97 | ||
98 | private String traceLibPath; | |
12c155f5 | 99 | |
1b70b6dc PT |
100 | private long fStreamingInterval = 0; |
101 | ||
12c155f5 FC |
102 | public LTTngTrace() { |
103 | } | |
104 | ||
105 | public boolean validate(IProject project, String path) { | |
106 | if (super.validate(project, path)) { | |
107 | String traceLibPath = TraceHelper.getTraceLibDirFromProject(project); | |
108 | try { | |
109 | LTTngTraceVersion version = new LTTngTraceVersion(path, traceLibPath); | |
110 | return version.isValidLttngTrace(); | |
111 | } catch (LttngException e) { | |
112 | } | |
113 | } | |
114 | return false; | |
115 | } | |
116 | ||
c5b45b39 FC |
117 | public void initTrace(String path, Class<LttngEvent> eventType) throws FileNotFoundException { |
118 | initLTTngTrace(path, eventType, CHECKPOINT_PAGE_SIZE, false); | |
119 | } | |
120 | ||
121 | public void initTrace(String path, Class<LttngEvent> eventType, int cacheSize) throws FileNotFoundException { | |
122 | initLTTngTrace(path, eventType, cacheSize, false); | |
123 | } | |
124 | ||
12c155f5 | 125 | public void initTrace(String path, Class<LttngEvent> eventType, boolean indexTrace) throws FileNotFoundException { |
c5b45b39 FC |
126 | initLTTngTrace(path, eventType, CHECKPOINT_PAGE_SIZE, indexTrace); |
127 | } | |
128 | ||
129 | public void initTrace(String path, Class<LttngEvent> eventType, int cacheSize, boolean indexTrace) throws FileNotFoundException { | |
130 | initLTTngTrace(path, eventType, cacheSize, indexTrace); | |
131 | } | |
132 | ||
133 | private void initLTTngTrace(String path, Class<LttngEvent> eventType, int cacheSize, boolean indexTrace) throws FileNotFoundException { | |
12c155f5 FC |
134 | super.initTrace(path, eventType, indexTrace); |
135 | try { | |
136 | currentJniTrace = JniTraceFactory.getJniTrace(path, traceLibPath, SHOW_LTT_DEBUG_DEFAULT); | |
137 | } catch (Exception e) { | |
138 | throw new FileNotFoundException(e.getMessage()); | |
139 | } | |
140 | ||
141 | // Export all the event types from the JNI side | |
142 | traceTypes = new HashMap<Integer, LttngEventType>(); | |
143 | traceTypeNames = new Vector<Integer>(); | |
144 | initialiseEventTypes(currentJniTrace); | |
145 | ||
00641a97 | 146 | // Build the re-used event structure |
12c155f5 | 147 | eventTimestamp = new LttngTimestamp(); |
4641c2f7 | 148 | eventSource = ""; //$NON-NLS-1$ |
12c155f5 FC |
149 | this.eventType = new LttngEventType(); |
150 | eventContent = new LttngEventContent(currentLttngEvent); | |
4641c2f7 | 151 | eventReference = getName(); |
12c155f5 FC |
152 | |
153 | // Create the skeleton event | |
154 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, this.eventType, eventContent, | |
155 | eventReference, null); | |
156 | ||
157 | // Create a new current location | |
158 | previousLocation = new LttngLocation(); | |
159 | ||
160 | // Set the currentEvent to the eventContent | |
161 | eventContent.setEvent(currentLttngEvent); | |
162 | ||
1b70b6dc PT |
163 | // // Bypass indexing if asked |
164 | // if ( bypassIndexing == false ) { | |
165 | // indexTrace(true); | |
166 | // } | |
167 | // else { | |
168 | // Even if we don't have any index, set ONE checkpoint | |
169 | // fCheckpoints.add(new TmfCheckpoint(new LttngTimestamp(0L) , new | |
170 | // LttngLocation() ) ); | |
171 | ||
172 | initializeStreamingMonitor(); | |
173 | } | |
174 | ||
175 | private void initializeStreamingMonitor() { | |
176 | JniTrace jniTrace = getCurrentJniTrace(); | |
177 | if (jniTrace == null || (!jniTrace.isLiveTraceSupported() || !LiveTraceManager.isLiveTrace(jniTrace.getTracepath()))) { | |
178 | // Set the time range of the trace | |
179 | TmfContext context = seekLocation(null); | |
180 | LttngEvent event = getNextEvent(context); | |
181 | LttngTimestamp startTime = new LttngTimestamp(event.getTimestamp()); | |
182 | LttngTimestamp endTime = new LttngTimestamp(currentJniTrace.getEndTime().getTime()); | |
183 | setTimeRange(new TmfTimeRange(startTime, endTime)); | |
184 | TmfTraceUpdatedSignal signal = new TmfTraceUpdatedSignal(this, this, getTimeRange()); | |
185 | broadcast(signal); | |
186 | return; | |
187 | } | |
188 | ||
12c155f5 FC |
189 | // Set the time range of the trace |
190 | TmfContext context = seekLocation(null); | |
191 | LttngEvent event = getNextEvent(context); | |
1b70b6dc PT |
192 | setEndTime(TmfTimestamp.BigBang); |
193 | final long startTime = event != null ? event.getTimestamp().getValue() : TmfTimestamp.BigBang.getValue(); | |
194 | fStreamingInterval = LTTNG_STREAMING_INTERVAL; | |
195 | ||
196 | final Thread thread = new Thread("Streaming Monitor for trace " + getName()) { //$NON-NLS-1$ | |
197 | LttngTimestamp safeTimestamp = null; | |
198 | TmfTimeRange timeRange = null; | |
199 | ||
200 | @Override | |
201 | public void run() { | |
202 | while (!fExecutor.isShutdown()) { | |
203 | TmfExperiment<?> experiment = TmfExperiment.getCurrentExperiment(); | |
204 | if (experiment != null) { | |
205 | final TmfEventRequest request = new TmfEventRequest<TmfEvent>(TmfEvent.class, TmfTimeRange.Eternity, 0, ExecutionType.FOREGROUND) { | |
206 | @Override | |
207 | public void handleCompleted() { | |
208 | updateJniTrace(); | |
209 | } | |
210 | }; | |
211 | synchronized (experiment) { | |
212 | experiment.sendRequest(request); | |
213 | } | |
214 | try { | |
215 | request.waitForCompletion(); | |
216 | } catch (InterruptedException e) { | |
217 | e.printStackTrace(); | |
218 | } | |
219 | } else { | |
220 | updateJniTrace(); | |
221 | } | |
222 | try { | |
223 | Thread.sleep(LTTNG_STREAMING_INTERVAL); | |
224 | } catch (InterruptedException e) { | |
225 | e.printStackTrace(); | |
226 | } | |
227 | } | |
228 | } | |
229 | ||
230 | private void updateJniTrace() { | |
231 | JniTrace jniTrace = getCurrentJniTrace(); | |
232 | currentJniTrace.updateTrace(); | |
233 | long endTime = jniTrace.getEndTime().getTime(); | |
234 | LttngTimestamp startTimestamp = new LttngTimestamp(startTime); | |
235 | LttngTimestamp endTimestamp = new LttngTimestamp(endTime); | |
236 | if (safeTimestamp != null && safeTimestamp.compareTo(getTimeRange().getEndTime(), false) > 0) { | |
237 | timeRange = new TmfTimeRange(startTimestamp, safeTimestamp); | |
238 | } else { | |
239 | timeRange = null; | |
240 | } | |
241 | safeTimestamp = endTimestamp; | |
242 | if (timeRange != null) { | |
243 | setTimeRange(timeRange); | |
244 | } | |
245 | } | |
246 | }; | |
247 | thread.start(); | |
248 | } | |
c5b45b39 | 249 | |
1b70b6dc PT |
250 | /* (non-Javadoc) |
251 | * @see org.eclipse.linuxtools.tmf.trace.TmfTrace#getStreamingInterval() | |
252 | */ | |
253 | @Override | |
254 | public long getStreamingInterval() { | |
255 | return fStreamingInterval; | |
12c155f5 FC |
256 | } |
257 | ||
258 | /** | |
259 | * Default Constructor. | |
260 | * <p> | |
261 | * | |
262 | * @param path | |
263 | * Path to a <b>directory</b> that contain an LTTng trace. | |
264 | * | |
265 | * @exception Exception | |
266 | * (most likely LTTngTraceException or FileNotFoundException) | |
267 | */ | |
268 | public LTTngTrace(String path) throws Exception { | |
269 | // Call with "wait for completion" true and "skip indexing" false | |
270 | this(path, null, true, false); | |
271 | } | |
272 | ||
273 | /** | |
274 | * Constructor, with control over the indexing. | |
275 | * <p> | |
276 | * | |
277 | * @param path | |
278 | * Path to a <b>directory</b> that contain an LTTng trace. | |
279 | * @param waitForCompletion | |
280 | * Should we wait for indexign to complete before moving on. | |
281 | * | |
282 | * @exception Exception | |
283 | * (most likely LTTngTraceException or FileNotFoundException) | |
284 | */ | |
285 | public LTTngTrace(String path, boolean waitForCompletion) throws Exception { | |
286 | // Call with "skip indexing" false | |
c5b45b39 | 287 | this(path, null, waitForCompletion, true); |
12c155f5 FC |
288 | } |
289 | ||
290 | /** | |
291 | * Default constructor, with control over the indexing and possibility to bypass indexation | |
292 | * <p> | |
293 | * | |
294 | * @param path | |
295 | * Path to a <b>directory</b> that contain an LTTng trace. | |
296 | * @param traceLibPath | |
a3767fd9 | 297 | * Path to a <b>directory</b> that contains LTTng trace libraries. |
12c155f5 FC |
298 | * @param waitForCompletion |
299 | * Should we wait for indexign to complete before moving on. | |
300 | * @param bypassIndexing | |
301 | * Should we bypass indexing completly? This is should only be useful for unit testing. | |
302 | * | |
303 | * @exception Exception | |
304 | * (most likely LTTngTraceException or FileNotFoundException) | |
305 | * | |
306 | */ | |
307 | public LTTngTrace(String path, String traceLibPath, boolean waitForCompletion, boolean bypassIndexing) | |
308 | throws Exception { | |
309 | super(path, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE, false); | |
00641a97 | 310 | initTrace(path, LttngEvent.class, !bypassIndexing); |
12c155f5 | 311 | this.traceLibPath = traceLibPath; |
12c155f5 FC |
312 | } |
313 | ||
314 | /* | |
315 | * Copy constructor is forbidden for LttngEvenmStream | |
316 | */ | |
00641a97 FC |
317 | public LTTngTrace(LTTngTrace other) throws Exception { |
318 | this(other.getPath(), other.getTraceLibPath(), false, true); | |
319 | this.fCheckpoints = other.fCheckpoints; | |
320 | setTimeRange(new TmfTimeRange(new LttngTimestamp(other.getStartTime()), new LttngTimestamp(other.getEndTime()))); | |
12c155f5 FC |
321 | } |
322 | ||
d4011df2 | 323 | @Override |
12c155f5 FC |
324 | public LTTngTrace copy() { |
325 | LTTngTrace returnedTrace = null; | |
326 | ||
327 | try { | |
328 | returnedTrace = new LTTngTrace(this); | |
329 | } catch (Exception e) { | |
330 | System.out | |
331 | .println("ERROR : Could not create LTTngTrace copy (createTraceCopy).\nError is : " + e.getStackTrace()); //$NON-NLS-1$ | |
332 | } | |
333 | ||
334 | return returnedTrace; | |
9aae0442 | 335 | } |
12c155f5 | 336 | |
550d787e | 337 | @Override |
9b635e61 | 338 | public synchronized LTTngTrace clone() { |
12c155f5 FC |
339 | LTTngTrace clone = null; |
340 | try { | |
341 | clone = (LTTngTrace) super.clone(); | |
342 | try { | |
343 | clone.currentJniTrace = JniTraceFactory.getJniTrace(getPath(), getTraceLibPath(), | |
344 | SHOW_LTT_DEBUG_DEFAULT); | |
345 | } catch (JniException e) { | |
346 | // e.printStackTrace(); | |
347 | } | |
348 | ||
349 | // Export all the event types from the JNI side | |
350 | clone.traceTypes = new HashMap<Integer, LttngEventType>(); | |
351 | clone.traceTypeNames = new Vector<Integer>(); | |
352 | clone.initialiseEventTypes(clone.currentJniTrace); | |
353 | ||
354 | // Verify that all those "default constructor" are safe to use | |
355 | clone.eventTimestamp = new LttngTimestamp(); | |
4641c2f7 | 356 | clone.eventSource = ""; //$NON-NLS-1$ |
12c155f5 FC |
357 | clone.eventType = new LttngEventType(); |
358 | clone.eventContent = new LttngEventContent(clone.currentLttngEvent); | |
4641c2f7 | 359 | clone.eventReference = getName(); |
12c155f5 FC |
360 | |
361 | // Create the skeleton event | |
362 | clone.currentLttngEvent = new LttngEvent(this, clone.eventTimestamp, clone.eventSource, clone.eventType, | |
363 | clone.eventContent, clone.eventReference, null); | |
364 | ||
365 | // Create a new current location | |
366 | clone.previousLocation = new LttngLocation(); | |
367 | ||
368 | // Set the currentEvent to the eventContent | |
369 | clone.eventContent.setEvent(clone.currentLttngEvent); | |
370 | ||
371 | // Set the start time of the trace | |
372 | setTimeRange(new TmfTimeRange(new LttngTimestamp(clone.currentJniTrace.getStartTime().getTime()), | |
373 | new LttngTimestamp(clone.currentJniTrace.getEndTime().getTime()))); | |
374 | } catch (CloneNotSupportedException e) { | |
375 | } | |
376 | ||
377 | return clone; | |
378 | } | |
379 | ||
380 | public String getTraceLibPath() { | |
381 | return traceLibPath; | |
382 | } | |
383 | ||
384 | /* | |
385 | * Fill out the HashMap with "Type" (Tracefile/Marker) | |
386 | * | |
387 | * This should be called at construction once the trace is open | |
388 | */ | |
389 | private void initialiseEventTypes(JniTrace trace) { | |
390 | // Work variables | |
391 | LttngEventType tmpType = null; | |
392 | String[] markerFieldsLabels = null; | |
393 | ||
394 | String newTracefileKey = null; | |
395 | Integer newMarkerKey = null; | |
396 | ||
397 | JniTracefile newTracefile = null; | |
398 | JniMarker newMarker = null; | |
399 | ||
400 | // First, obtain an iterator on TRACEFILES of owned by the TRACE | |
401 | Iterator<String> tracefileItr = trace.getTracefilesMap().keySet().iterator(); | |
402 | ||
403 | while (tracefileItr.hasNext()) { | |
404 | newTracefileKey = tracefileItr.next(); | |
405 | newTracefile = trace.getTracefilesMap().get(newTracefileKey); | |
406 | ||
407 | // From the TRACEFILE read, obtain its MARKER | |
408 | Iterator<Integer> markerItr = newTracefile.getTracefileMarkersMap().keySet().iterator(); | |
409 | while (markerItr.hasNext()) { | |
410 | newMarkerKey = markerItr.next(); | |
411 | newMarker = newTracefile.getTracefileMarkersMap().get(newMarkerKey); | |
412 | ||
413 | // From the MARKER we can obtain the MARKERFIELDS keys (i.e. | |
414 | // labels) | |
415 | markerFieldsLabels = newMarker.getMarkerFieldsHashMap().keySet() | |
416 | .toArray(new String[newMarker.getMarkerFieldsHashMap().size()]); | |
417 | ||
418 | tmpType = new LttngEventType(newTracefile.getTracefileName(), newTracefile.getCpuNumber(), | |
419 | newMarker.getName(), newMarkerKey.intValue(), markerFieldsLabels); | |
420 | ||
421 | // Add the type to the map/vector | |
422 | addEventTypeToMap(tmpType); | |
423 | } | |
424 | } | |
425 | } | |
426 | ||
427 | /* | |
428 | * Add a new type to the HashMap | |
429 | * | |
430 | * As the hashmap use a key format that is a bit dangerous to use, we should always add using this function. | |
431 | */ | |
432 | private void addEventTypeToMap(LttngEventType newEventType) { | |
433 | int newTypeKey = EventTypeKey.getEventTypeHash(newEventType); | |
434 | ||
435 | this.traceTypes.put(newTypeKey, newEventType); | |
436 | this.traceTypeNames.add(newTypeKey); | |
437 | } | |
438 | ||
12c155f5 FC |
439 | /** |
440 | * Return the latest saved location. Note : Modifying the returned location may result in buggy positionning! | |
441 | * | |
442 | * @return The LttngLocation as it was after the last operation. | |
443 | * | |
6c13869b | 444 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
12c155f5 FC |
445 | */ |
446 | @Override | |
447 | public synchronized ITmfLocation<?> getCurrentLocation() { | |
448 | return previousLocation; | |
449 | } | |
450 | ||
451 | /** | |
452 | * Position the trace to the event at the given location. | |
453 | * <p> | |
454 | * NOTE : Seeking by location is very fast compare to seeking by position but is still slower than "ReadNext", avoid | |
455 | * using it for small interval. | |
456 | * | |
457 | * @param location | |
458 | * Location of the event in the trace. If no event available at this exact location, we will position | |
459 | * ourself to the next one. | |
460 | * | |
461 | * @return The TmfContext that point to this event | |
462 | * | |
6c13869b FC |
463 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
464 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
465 | */ |
466 | @Override | |
467 | public synchronized TmfContext seekLocation(ITmfLocation<?> location) { | |
468 | ||
469 | // // [lmcfrch] | |
470 | // lastTime = 0; | |
471 | ||
472 | if (PrintDebug) { | |
473 | System.out.println("seekLocation(location) location -> " + location); //$NON-NLS-1$ | |
474 | } | |
475 | ||
476 | // If the location in context is null, create a new one | |
477 | LttngLocation curLocation = null; | |
478 | if (location == null) { | |
479 | curLocation = new LttngLocation(); | |
480 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
481 | context.setRank(ITmfContext.INITIAL_RANK); | |
482 | return context; | |
483 | } else { | |
484 | curLocation = (LttngLocation) location; | |
485 | } | |
486 | ||
487 | // *** NOTE : | |
488 | // Update to location should (and will) be done in SeekEvent. | |
489 | ||
490 | // The only seek valid in LTTng is with the time, we call | |
491 | // seekEvent(timestamp) | |
492 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
493 | ||
12c155f5 FC |
494 | return context; |
495 | } | |
496 | ||
497 | /** | |
498 | * Position the trace to the event at the given time. | |
499 | * <p> | |
500 | * NOTE : Seeking by time is very fast compare to seeking by position but is still slower than "ReadNext", avoid | |
501 | * using it for small interval. | |
502 | * | |
503 | * @param timestamp | |
504 | * Time of the event in the trace. If no event available at this exact time, we will position ourself to | |
505 | * the next one. | |
506 | * | |
507 | * @return The TmfContext that point to this event | |
508 | * | |
6c13869b FC |
509 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
510 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
511 | */ |
512 | @Override | |
4df4581d | 513 | public synchronized TmfContext seekEvent(ITmfTimestamp timestamp) { |
12c155f5 | 514 | |
12c155f5 FC |
515 | if (PrintDebug) { |
516 | System.out.println("seekEvent(timestamp) timestamp -> " + timestamp); //$NON-NLS-1$ | |
517 | } | |
518 | ||
519 | // Call JNI to seek | |
520 | currentJniTrace.seekToTime(new JniTime(timestamp.getValue())); | |
521 | ||
522 | // Save the time at which we seeked | |
523 | previousLocation.setOperationTime(timestamp.getValue()); | |
524 | // Set the operation marker as seek, to be able to detect we did "seek" | |
525 | // this event | |
526 | previousLocation.setLastOperationSeek(); | |
527 | ||
12c155f5 FC |
528 | LttngLocation curLocation = new LttngLocation(previousLocation); |
529 | ||
530 | return new TmfContext(curLocation); | |
531 | } | |
532 | ||
533 | /** | |
534 | * Position the trace to the event at the given position (rank). | |
535 | * <p> | |
536 | * NOTE : Seeking by position is very slow in LTTng, consider seeking by timestamp. | |
537 | * | |
538 | * @param position | |
539 | * Position (or rank) of the event in the trace, starting at 0. | |
540 | * | |
541 | * @return The TmfContext that point to this event | |
542 | * | |
6c13869b FC |
543 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
544 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
545 | */ |
546 | @Override | |
547 | public synchronized TmfContext seekEvent(long position) { | |
548 | ||
549 | if (PrintDebug) { | |
550 | System.out.println("seekEvent(position) position -> " + position); //$NON-NLS-1$ | |
551 | } | |
552 | ||
4df4581d | 553 | ITmfTimestamp timestamp = null; |
12c155f5 FC |
554 | long index = position / getCacheSize(); |
555 | ||
556 | // Get the timestamp of the closest check point to the given position | |
557 | if (fCheckpoints.size() > 0) { | |
558 | if (index >= fCheckpoints.size()) { | |
559 | index = fCheckpoints.size() - 1; | |
560 | } | |
561 | timestamp = fCheckpoints.elementAt((int) index).getTimestamp(); | |
562 | } | |
563 | // If none, take the start time of the trace | |
564 | else { | |
565 | timestamp = getStartTime(); | |
566 | } | |
567 | ||
568 | // Seek to the found time | |
569 | TmfContext tmpContext = seekEvent(timestamp); | |
570 | tmpContext.setRank((index + 1) * fIndexPageSize); | |
571 | previousLocation = (LttngLocation) tmpContext.getLocation(); | |
572 | ||
573 | // Ajust the index of the event we found at this check point position | |
574 | Long currentPosition = index * getCacheSize(); | |
575 | ||
576 | Long lastTimeValueRead = 0L; | |
577 | ||
578 | // Get the event at current position. This won't move to the next one | |
579 | JniEvent tmpJniEvent = currentJniTrace.findNextEvent(); | |
580 | // Now that we are positionned at the checkpoint, | |
581 | // we need to "readNext" (Position - CheckpointPosition) times or until | |
582 | // trace "run out" | |
583 | while ((tmpJniEvent != null) && (currentPosition < position)) { | |
584 | tmpJniEvent = currentJniTrace.readNextEvent(); | |
585 | currentPosition++; | |
586 | } | |
587 | ||
588 | // If we found our event, save its timestamp | |
589 | if (tmpJniEvent != null) { | |
590 | lastTimeValueRead = tmpJniEvent.getEventTime().getTime(); | |
591 | } | |
592 | ||
593 | // Set the operation marker as seek, to be able to detect we did "seek" | |
594 | // this event | |
595 | previousLocation.setLastOperationSeek(); | |
596 | // Save read event time | |
597 | previousLocation.setOperationTime(lastTimeValueRead); | |
598 | ||
599 | // *** VERIFY *** | |
600 | // Is that too paranoid? | |
601 | // | |
602 | // We don't trust what upper level could do with our internal location | |
603 | // so we create a new one to return instead | |
604 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
605 | ||
606 | return new TmfContext(curLocation); | |
607 | } | |
608 | ||
609 | @Override | |
610 | public TmfContext seekLocation(double ratio) { | |
611 | // TODO Auto-generated method stub | |
612 | return null; | |
613 | } | |
614 | ||
615 | @Override | |
616 | public double getLocationRatio(ITmfLocation<?> location) { | |
617 | // TODO Auto-generated method stub | |
618 | return 0; | |
619 | } | |
620 | ||
621 | /** | |
622 | * Return the event in the trace according to the given context. Read it if necessary. | |
623 | * <p> | |
624 | * Similar (same?) as ParseEvent except that calling GetNext twice read the next one the second time. | |
625 | * | |
626 | * @param context | |
627 | * Current TmfContext where to get the event | |
628 | * | |
629 | * @return The LttngEvent we read of null if no event are available | |
630 | * | |
6c13869b FC |
631 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
632 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
633 | */ |
634 | ||
635 | public int nbEventsRead = 0; | |
636 | ||
637 | @Override | |
638 | public synchronized LttngEvent getNextEvent(TmfContext context) { | |
639 | ||
640 | if (PrintDebug) { | |
641 | System.out.println("getNextEvent(context) context.getLocation() -> " //$NON-NLS-1$ | |
642 | + context.getLocation()); | |
643 | } | |
644 | ||
645 | LttngEvent returnedEvent = null; | |
646 | LttngLocation curLocation = null; | |
647 | ||
648 | curLocation = (LttngLocation) context.getLocation(); | |
649 | // If the location in context is null, create a new one | |
650 | if (curLocation == null) { | |
651 | curLocation = getCurrentLocation(context); | |
652 | } | |
653 | ||
12c155f5 FC |
654 | // *** Positioning trick : |
655 | // GetNextEvent only read the trace if : | |
656 | // 1- The last operation was NOT a ParseEvent --> A read is required | |
657 | // OR | |
658 | // 2- The time of the previous location is different from the current | |
659 | // one --> A seek + a read is required | |
660 | if ((!(curLocation.isLastOperationParse())) | |
661 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
662 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
663 | if (PrintDebug) { | |
664 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ | |
665 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
666 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
667 | } | |
668 | seekEvent(curLocation.getOperationTime()); | |
669 | } | |
670 | // Read the next event from the trace. The last one will NO LONGER | |
671 | // BE VALID. | |
672 | returnedEvent = readNextEvent(curLocation); | |
673 | ||
674 | } else { | |
675 | // No event was read, just return the one currently loaded (the last | |
676 | // one we read) | |
677 | returnedEvent = currentLttngEvent; | |
678 | ||
679 | // *** IMPORTANT! | |
680 | // Reset (erase) the operation marker to both location, to be able | |
681 | // to detect we did NOT "read" this event | |
682 | previousLocation.resetLocationState(); | |
683 | curLocation.resetLocationState(); | |
684 | } | |
685 | ||
686 | // If we read an event, set it's time to the locations (both previous | |
687 | // and current) | |
688 | if (returnedEvent != null) { | |
689 | setPreviousAndCurrentTimes(context, returnedEvent, curLocation); | |
12c155f5 FC |
690 | } |
691 | ||
692 | return returnedEvent; | |
693 | } | |
694 | ||
695 | // this method was extracted for profiling purposes | |
696 | private void setPreviousAndCurrentTimes(TmfContext context, LttngEvent returnedEvent, LttngLocation curLocation) { | |
697 | ||
4df4581d | 698 | ITmfTimestamp eventTimestamp = returnedEvent.getTimestamp(); |
12c155f5 FC |
699 | // long eventTime = eventTimestamp.getValue(); |
700 | previousLocation.setOperationTime(eventTimestamp.getValue()); | |
701 | curLocation.setOperationTime(eventTimestamp.getValue()); | |
702 | updateIndex(context, context.getRank(), eventTimestamp); | |
703 | context.updateRank(1); | |
704 | } | |
705 | ||
d7dbf09a | 706 | protected void updateIndex(TmfContext context, long rank, ITmfTimestamp timestamp) { |
12c155f5 FC |
707 | |
708 | if (getStartTime().compareTo(timestamp, false) > 0) | |
709 | setStartTime(timestamp); | |
710 | if (getEndTime().compareTo(timestamp, false) < 0) | |
711 | setEndTime(timestamp); | |
712 | if (rank != ITmfContext.UNKNOWN_RANK) { | |
713 | if (fNbEvents <= rank) | |
714 | fNbEvents = rank + 1; | |
715 | // Build the index as we go along | |
716 | if ((rank % fIndexPageSize) == 0) { | |
717 | // Determine the table position | |
718 | long position = rank / fIndexPageSize; | |
719 | // Add new entry at proper location (if empty) | |
720 | if (fCheckpoints.size() == position) { | |
721 | addCheckPoint(context, timestamp); | |
722 | } | |
723 | } | |
724 | } | |
725 | } | |
726 | ||
d7dbf09a | 727 | private void addCheckPoint(TmfContext context, ITmfTimestamp timestamp) { |
12c155f5 FC |
728 | ITmfLocation<?> location = context.getLocation().clone(); |
729 | fCheckpoints.add(new TmfCheckpoint(timestamp.clone(), location)); | |
730 | } | |
731 | ||
732 | // this method was extracted for profiling purposes | |
733 | private LttngEvent readNextEvent(LttngLocation curLocation) { | |
734 | LttngEvent returnedEvent; | |
735 | // Read the next event from the trace. The last one will NO LONGER BE | |
736 | // VALID. | |
737 | returnedEvent = readEvent(curLocation); | |
738 | nbEventsRead++; | |
739 | ||
740 | // Set the operation marker as read to both location, to be able to | |
741 | // detect we did "read" this event | |
742 | previousLocation.setLastOperationReadNext(); | |
743 | curLocation.setLastOperationReadNext(); | |
744 | return returnedEvent; | |
745 | } | |
746 | ||
747 | // this method was extracted for profiling purposes | |
748 | private LttngLocation getCurrentLocation(TmfContext context) { | |
749 | LttngLocation curLocation; | |
750 | curLocation = new LttngLocation(); | |
751 | context.setLocation(curLocation); | |
752 | return curLocation; | |
753 | } | |
754 | ||
755 | /** | |
756 | * Return the event in the trace according to the given context. Read it if necessary. | |
757 | * <p> | |
758 | * Similar (same?) as GetNextEvent except that calling ParseEvent twice will return the same event | |
759 | * | |
760 | * @param context | |
761 | * Current TmfContext where to get the event | |
762 | * | |
763 | * @return The LttngEvent we read of null if no event are available | |
764 | * | |
6c13869b FC |
765 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
766 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
767 | */ |
768 | @Override | |
769 | public synchronized LttngEvent parseEvent(TmfContext context) { | |
770 | ||
771 | if (PrintDebug) { | |
772 | System.out.println("parseEvent(context) context.getLocation() -> " //$NON-NLS-1$ | |
773 | + context.getLocation()); | |
774 | } | |
775 | ||
776 | LttngEvent returnedEvent = null; | |
777 | LttngLocation curLocation = null; | |
778 | ||
779 | // If the location in context is null, create a new one | |
780 | if (context.getLocation() == null) { | |
781 | curLocation = new LttngLocation(); | |
782 | context.setLocation(curLocation); | |
783 | } | |
784 | // Otherwise, we use the one in context; it should be a valid | |
785 | // LttngLocation | |
786 | else { | |
787 | curLocation = (LttngLocation) context.getLocation(); | |
788 | } | |
789 | ||
790 | // *** HACK *** | |
791 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
792 | // once ParseEvent() is called | |
793 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
794 | // event. | |
795 | // So, before "Parsing" an event, we have to make sure we didn't "Read" | |
796 | // it alreafy. | |
797 | // Also, "Reading" invalidate the previous Event in LTTNG and seek back | |
798 | // is very costly, | |
799 | // so calling twice "Parse" will return the same event, giving a way to | |
800 | // get the "Currently loaded" event | |
801 | ||
802 | // *** Positionning trick : | |
803 | // ParseEvent only read the trace if : | |
804 | // 1- The last operation was NOT a ParseEvent or a GetNextEvent --> A | |
805 | // read is required | |
806 | // OR | |
807 | // 2- The time of the previous location is different from the current | |
808 | // one --> A seek + a read is required | |
809 | if (((!(curLocation.isLastOperationParse())) && ((!(curLocation.isLastOperationReadNext())))) | |
810 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
811 | // Previous time != Current time : We need to reposition to the | |
812 | // current time | |
813 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
814 | if (PrintDebug) { | |
815 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ | |
816 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
817 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
818 | } | |
819 | seekEvent(curLocation.getOperationTime()); | |
820 | } | |
821 | ||
822 | // Read the next event from the trace. The last one will NO LONGER | |
823 | // BE VALID. | |
824 | returnedEvent = readEvent(curLocation); | |
825 | } else { | |
826 | // No event was read, just return the one currently loaded (the last | |
827 | // one we read) | |
828 | returnedEvent = currentLttngEvent; | |
829 | } | |
830 | ||
831 | // If we read an event, set it's time to the locations (both previous | |
832 | // and current) | |
833 | if (returnedEvent != null) { | |
834 | previousLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
835 | curLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
836 | } | |
837 | ||
838 | // Set the operation marker as parse to both location, to be able to | |
839 | // detect we already "read" this event | |
840 | previousLocation.setLastOperationParse(); | |
841 | curLocation.setLastOperationParse(); | |
842 | ||
843 | return returnedEvent; | |
844 | } | |
845 | ||
846 | /* | |
847 | * Read the next event from the JNI and convert it as Lttng Event<p> | |
848 | * | |
849 | * @param location Current LttngLocation that to be updated with the event timestamp | |
850 | * | |
851 | * @return The LttngEvent we read of null if no event are available | |
852 | * | |
853 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
854 | * | |
855 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
856 | */ | |
857 | private synchronized LttngEvent readEvent(LttngLocation location) { | |
858 | LttngEvent returnedEvent = null; | |
859 | JniEvent tmpEvent = null; | |
860 | ||
861 | // Read the next event from JNI. THIS WILL INVALIDATE THE CURRENT LTTNG | |
862 | // EVENT. | |
863 | tmpEvent = currentJniTrace.readNextEvent(); | |
864 | ||
865 | if (tmpEvent != null) { | |
866 | // *** NOTE | |
867 | // Convert will update the currentLttngEvent | |
868 | returnedEvent = convertJniEventToTmf(tmpEvent); | |
869 | ||
870 | location.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
871 | } | |
872 | // *** NOTE | |
873 | // If the read failed (likely the last event in the trace), set the | |
874 | // LastReadTime to the JNI time | |
875 | // That way, even if we try to read again, we will step over the bogus | |
876 | // seek and read | |
877 | else { | |
878 | location.setOperationTime(getEndTime().getValue() + 1); | |
879 | } | |
880 | ||
881 | return returnedEvent; | |
882 | } | |
883 | ||
884 | /** | |
885 | * Method to convert a JniEvent into a LttngEvent. | |
886 | * <p> | |
887 | * | |
888 | * Note : This method will call LttngEvent convertEventJniToTmf(JniEvent, boolean) with a default value for | |
889 | * isParsingNeeded | |
890 | * | |
891 | * @param newEvent | |
892 | * The JniEvent to convert into LttngEvent | |
893 | * | |
894 | * @return The converted LttngEvent | |
895 | * | |
896 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
6c13869b | 897 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
898 | */ |
899 | public synchronized LttngEvent convertJniEventToTmf(JniEvent newEvent) { | |
900 | currentLttngEvent = convertJniEventToTmf(newEvent, IS_PARSING_NEEDED_DEFAULT); | |
901 | ||
902 | return currentLttngEvent; | |
903 | } | |
904 | ||
905 | /** | |
906 | * Method to convert a JniEvent into a LttngEvent | |
907 | * | |
908 | * @param jniEvent | |
909 | * The JniEvent to convert into LttngEvent | |
910 | * @param isParsingNeeded | |
911 | * A boolean value telling if the event should be parsed or not. | |
912 | * | |
913 | * @return The converted LttngEvent | |
914 | * | |
915 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
6c13869b | 916 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
917 | */ |
918 | public synchronized LttngEvent convertJniEventToTmf(JniEvent jniEvent, boolean isParsingNeeded) { | |
919 | ||
920 | if (UniqueEvent) { | |
921 | ||
922 | // *** | |
923 | // UNHACKED : We can no longer do that because TCF need to maintain | |
924 | // several events at once. | |
925 | // This is very slow to do so in LTTng, this has to be temporary. | |
926 | // *** HACK *** | |
927 | // To save time here, we only set value instead of allocating new | |
928 | // object | |
929 | // This give an HUGE performance improvement | |
930 | // all allocation done in the LttngTrace constructor | |
931 | // *** | |
932 | eventTimestamp.setValue(jniEvent.getEventTime().getTime()); | |
99005796 | 933 | eventSource = jniEvent.requestEventSource(); |
12c155f5 FC |
934 | |
935 | eventType = traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent)); | |
936 | ||
4641c2f7 FC |
937 | String fullTracePath = getName(); |
938 | String reference = fullTracePath.substring(fullTracePath.lastIndexOf('/') + 1); | |
939 | currentLttngEvent.setReference(reference); | |
12c155f5 FC |
940 | |
941 | eventContent.emptyContent(); | |
942 | ||
943 | currentLttngEvent.setType(eventType); | |
944 | // Save the jni reference | |
945 | currentLttngEvent.updateJniEventReference(jniEvent); | |
946 | ||
947 | // Parse now if was asked | |
948 | // Warning : THIS IS SLOW | |
949 | if (isParsingNeeded) { | |
950 | eventContent.getFields(); | |
951 | } | |
952 | ||
953 | return currentLttngEvent; | |
954 | } else { | |
955 | return convertJniEventToTmfMultipleEventEvilFix(jniEvent, isParsingNeeded); | |
956 | } | |
957 | ||
958 | } | |
959 | ||
960 | /** | |
961 | * This method is a temporary fix to support multiple events at once in TMF This is expected to be slow and should | |
962 | * be fixed in another way. See comment in convertJniEventToTmf(); | |
963 | * | |
964 | * @param jniEvent | |
965 | * The current JNI Event | |
966 | * @return Current Lttng Event fully parsed | |
967 | */ | |
968 | private synchronized LttngEvent convertJniEventToTmfMultipleEventEvilFix(JniEvent jniEvent, boolean isParsingNeeded) { | |
969 | // *** HACK *** | |
970 | // Below : the "fix" with all the new and the full-parse | |
971 | // Allocating new memory is slow. | |
972 | // Parsing every events is very slow. | |
973 | eventTimestamp = new LttngTimestamp(jniEvent.getEventTime().getTime()); | |
99005796 | 974 | eventSource = jniEvent.requestEventSource(); |
4641c2f7 | 975 | eventReference = getName(); |
12c155f5 FC |
976 | eventType = new LttngEventType(traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent))); |
977 | eventContent = new LttngEventContent(currentLttngEvent); | |
978 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, | |
979 | null); | |
980 | ||
981 | // The jni reference is no longer reliable but we will keep it anyhow | |
982 | currentLttngEvent.updateJniEventReference(jniEvent); | |
983 | // Ensure that the content is correctly set | |
984 | eventContent.setEvent(currentLttngEvent); | |
985 | ||
986 | // Parse the event if it was needed | |
987 | // *** WARNING *** | |
988 | // ONLY for testing, NOT parsing events with non-unique events WILL | |
989 | // result in segfault in the JVM | |
990 | if (isParsingNeeded) { | |
991 | eventContent.getFields(); | |
992 | } | |
993 | ||
994 | return currentLttngEvent; | |
995 | } | |
996 | ||
997 | /** | |
998 | * Reference to the current LttngTrace we are reading from. | |
999 | * <p> | |
1000 | * | |
1001 | * Note : This bypass the framework and should not be use, except for testing! | |
1002 | * | |
1003 | * @return Reference to the current LttngTrace | |
1004 | * | |
1005 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1006 | */ | |
1007 | public JniTrace getCurrentJniTrace() { | |
1008 | return currentJniTrace; | |
1009 | } | |
1010 | ||
1011 | /** | |
1012 | * Return a reference to the current LttngEvent we have in memory. | |
1013 | * | |
1014 | * @return The current (last read) LttngEvent | |
1015 | * | |
6c13869b | 1016 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
1017 | */ |
1018 | public synchronized LttngEvent getCurrentEvent() { | |
1019 | return currentLttngEvent; | |
1020 | } | |
1021 | ||
1022 | /** | |
1023 | * Get the major version number for the current trace | |
1024 | * | |
1025 | * @return Version major or -1 if unknown | |
1026 | * | |
1027 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1028 | * | |
1029 | */ | |
1030 | public short getVersionMajor() { | |
1031 | if (currentJniTrace != null) { | |
1032 | return currentJniTrace.getLttMajorVersion(); | |
1033 | } else { | |
1034 | return -1; | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | /** | |
1039 | * Get the minor version number for the current trace | |
1040 | * | |
1041 | * @return Version minor or -1 if unknown | |
1042 | * | |
1043 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1044 | * | |
1045 | */ | |
1046 | public short getVersionMinor() { | |
1047 | if (currentJniTrace != null) { | |
1048 | return currentJniTrace.getLttMinorVersion(); | |
1049 | } else { | |
1050 | return -1; | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | /** | |
1055 | * Get the number of CPU for this trace | |
1056 | * | |
1057 | * @return Number of CPU or -1 if unknown | |
1058 | * | |
1059 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1060 | * | |
1061 | */ | |
1062 | public int getCpuNumber() { | |
1063 | if (currentJniTrace != null) { | |
1064 | return currentJniTrace.getCpuNumber(); | |
1065 | } else { | |
1066 | return -1; | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | /** | |
1071 | * Print the content of the checkpoint vector. | |
1072 | * <p> | |
1073 | * | |
1074 | * This is intended for debug purpose only. | |
1075 | */ | |
1076 | public void printCheckpointsVector() { | |
1077 | System.out.println("StartTime : " //$NON-NLS-1$ | |
1078 | + getTimeRange().getStartTime().getValue()); | |
1079 | System.out.println("EndTime : " //$NON-NLS-1$ | |
1080 | + getTimeRange().getEndTime().getValue()); | |
1081 | ||
1082 | for (int pos = 0; pos < fCheckpoints.size(); pos++) { | |
1083 | System.out.print(pos + ": " + "\t"); //$NON-NLS-1$ //$NON-NLS-2$ | |
1084 | System.out.print(fCheckpoints.get(pos).getTimestamp() + "\t"); //$NON-NLS-1$ | |
1085 | System.out.println(fCheckpoints.get(pos).getLocation()); | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | @Override | |
1090 | public synchronized void dispose() { | |
1091 | if (currentJniTrace != null) | |
1092 | currentJniTrace.closeTrace(); | |
1093 | super.dispose(); | |
1094 | } | |
1095 | ||
1096 | /** | |
1097 | * Return a String identifying this trace. | |
1098 | * | |
1099 | * @return String that identify this trace | |
1100 | */ | |
1101 | @Override | |
3b38ea61 | 1102 | @SuppressWarnings("nls") |
12c155f5 FC |
1103 | public String toString() { |
1104 | String returnedData = ""; | |
64fe8e8a | 1105 | |
12c155f5 FC |
1106 | returnedData += "Path :" + getPath() + " "; |
1107 | returnedData += "Trace:" + currentJniTrace + " "; | |
1108 | returnedData += "Event:" + currentLttngEvent; | |
64fe8e8a | 1109 | |
12c155f5 FC |
1110 | return returnedData; |
1111 | } | |
cb866e08 | 1112 | |
28b94d61 FC |
1113 | } |
1114 | ||
1115 | /* | |
1116 | * EventTypeKey inner class | |
1117 | * | |
12c155f5 | 1118 | * This class is used to make the process of generating the HashMap key more transparent and so less error prone to use |
28b94d61 | 1119 | */ |
64fe8e8a | 1120 | final class EventTypeKey { |
12c155f5 FC |
1121 | // *** WARNING *** |
1122 | // These two getEventTypeKey() functions should ALWAYS construct the key the | |
1123 | // same ways! | |
1124 | // Otherwise, every type search will fail! | |
64fe8e8a | 1125 | |
12c155f5 FC |
1126 | // added final to encourage inlining. |
1127 | ||
1128 | // generating a hash code by hand to avoid a string creation | |
1129 | final static public int getEventTypeHash(LttngEventType newEventType) { | |
1130 | return generateHash(newEventType.getTracefileName(), newEventType.getCpuId(), newEventType.getMarkerName()); | |
1131 | } | |
1132 | ||
1133 | final private static int generateHash(String traceFileName, long cpuNumber, String markerName) { | |
1134 | // 0x1337 is a prime number. The number of CPUs is always under 8192 on | |
1135 | // the current kernel, so this will work with the current linux kernel. | |
1136 | int cpuHash = (int) (cpuNumber * (0x1337)); | |
1137 | return traceFileName.hashCode() ^ (cpuHash) ^ markerName.hashCode(); | |
1138 | } | |
1139 | ||
1140 | // generating a hash code by hand to avoid a string creation | |
1141 | final static public int getEventTypeHash(JniEvent newEvent) { | |
1142 | return generateHash(newEvent.getParentTracefile().getTracefileName(), newEvent.getParentTracefile() | |
1143 | .getCpuNumber(), newEvent.requestEventMarker().getName()); | |
1144 | } | |
64fe8e8a | 1145 | |
a3767fd9 | 1146 | } |