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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 | ||
0710697b PT |
117 | public void initTrace(String name, String path, Class<LttngEvent> eventType) throws FileNotFoundException { |
118 | initLTTngTrace(name, path, eventType, CHECKPOINT_PAGE_SIZE, false); | |
c5b45b39 FC |
119 | } |
120 | ||
0710697b PT |
121 | public void initTrace(String name, String path, Class<LttngEvent> eventType, int cacheSize) throws FileNotFoundException { |
122 | initLTTngTrace(name, path, eventType, cacheSize, false); | |
c5b45b39 FC |
123 | } |
124 | ||
0710697b PT |
125 | public void initTrace(String name, String path, Class<LttngEvent> eventType, boolean indexTrace) throws FileNotFoundException { |
126 | initLTTngTrace(name, path, eventType, CHECKPOINT_PAGE_SIZE, indexTrace); | |
c5b45b39 FC |
127 | } |
128 | ||
0710697b PT |
129 | public void initTrace(String name, String path, Class<LttngEvent> eventType, int cacheSize, boolean indexTrace) throws FileNotFoundException { |
130 | initLTTngTrace(name, path, eventType, cacheSize, indexTrace); | |
c5b45b39 FC |
131 | } |
132 | ||
0710697b PT |
133 | private void initLTTngTrace(String name, String path, Class<LttngEvent> eventType, int cacheSize, boolean indexTrace) throws FileNotFoundException { |
134 | super.initTrace(name, path, eventType, indexTrace); | |
12c155f5 FC |
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> | |
0710697b PT |
261 | * |
262 | * @param name | |
263 | * Name of the trace | |
12c155f5 FC |
264 | * @param path |
265 | * Path to a <b>directory</b> that contain an LTTng trace. | |
266 | * | |
267 | * @exception Exception | |
268 | * (most likely LTTngTraceException or FileNotFoundException) | |
269 | */ | |
0710697b | 270 | public LTTngTrace(String name, String path) throws Exception { |
12c155f5 | 271 | // Call with "wait for completion" true and "skip indexing" false |
0710697b | 272 | this(name, path, null, true, false); |
12c155f5 FC |
273 | } |
274 | ||
275 | /** | |
276 | * Constructor, with control over the indexing. | |
277 | * <p> | |
278 | * | |
0710697b PT |
279 | * @param name |
280 | * Name of the trace | |
12c155f5 FC |
281 | * @param path |
282 | * Path to a <b>directory</b> that contain an LTTng trace. | |
283 | * @param waitForCompletion | |
284 | * Should we wait for indexign to complete before moving on. | |
285 | * | |
286 | * @exception Exception | |
287 | * (most likely LTTngTraceException or FileNotFoundException) | |
288 | */ | |
0710697b | 289 | public LTTngTrace(String name, String path, boolean waitForCompletion) throws Exception { |
12c155f5 | 290 | // Call with "skip indexing" false |
0710697b | 291 | this(name, path, null, waitForCompletion, true); |
12c155f5 FC |
292 | } |
293 | ||
294 | /** | |
295 | * Default constructor, with control over the indexing and possibility to bypass indexation | |
296 | * <p> | |
297 | * | |
0710697b PT |
298 | * @param name |
299 | * Name of the trace | |
12c155f5 FC |
300 | * @param path |
301 | * Path to a <b>directory</b> that contain an LTTng trace. | |
302 | * @param traceLibPath | |
a3767fd9 | 303 | * Path to a <b>directory</b> that contains LTTng trace libraries. |
12c155f5 FC |
304 | * @param waitForCompletion |
305 | * Should we wait for indexign to complete before moving on. | |
306 | * @param bypassIndexing | |
307 | * Should we bypass indexing completly? This is should only be useful for unit testing. | |
308 | * | |
309 | * @exception Exception | |
310 | * (most likely LTTngTraceException or FileNotFoundException) | |
311 | * | |
312 | */ | |
0710697b | 313 | public LTTngTrace(String name, String path, String traceLibPath, boolean waitForCompletion, boolean bypassIndexing) |
12c155f5 | 314 | throws Exception { |
0710697b PT |
315 | super(name, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE, false); |
316 | initTrace(name, path, LttngEvent.class, !bypassIndexing); | |
12c155f5 | 317 | this.traceLibPath = traceLibPath; |
12c155f5 FC |
318 | } |
319 | ||
320 | /* | |
321 | * Copy constructor is forbidden for LttngEvenmStream | |
322 | */ | |
00641a97 | 323 | public LTTngTrace(LTTngTrace other) throws Exception { |
0710697b | 324 | this(other.getName(), other.getPath(), other.getTraceLibPath(), false, true); |
00641a97 FC |
325 | this.fCheckpoints = other.fCheckpoints; |
326 | setTimeRange(new TmfTimeRange(new LttngTimestamp(other.getStartTime()), new LttngTimestamp(other.getEndTime()))); | |
12c155f5 FC |
327 | } |
328 | ||
d4011df2 | 329 | @Override |
12c155f5 FC |
330 | public LTTngTrace copy() { |
331 | LTTngTrace returnedTrace = null; | |
332 | ||
333 | try { | |
334 | returnedTrace = new LTTngTrace(this); | |
335 | } catch (Exception e) { | |
336 | System.out | |
337 | .println("ERROR : Could not create LTTngTrace copy (createTraceCopy).\nError is : " + e.getStackTrace()); //$NON-NLS-1$ | |
338 | } | |
339 | ||
340 | return returnedTrace; | |
9aae0442 | 341 | } |
12c155f5 | 342 | |
550d787e | 343 | @Override |
9b635e61 | 344 | public synchronized LTTngTrace clone() { |
12c155f5 FC |
345 | LTTngTrace clone = null; |
346 | try { | |
347 | clone = (LTTngTrace) super.clone(); | |
348 | try { | |
349 | clone.currentJniTrace = JniTraceFactory.getJniTrace(getPath(), getTraceLibPath(), | |
350 | SHOW_LTT_DEBUG_DEFAULT); | |
351 | } catch (JniException e) { | |
352 | // e.printStackTrace(); | |
353 | } | |
354 | ||
355 | // Export all the event types from the JNI side | |
356 | clone.traceTypes = new HashMap<Integer, LttngEventType>(); | |
357 | clone.traceTypeNames = new Vector<Integer>(); | |
358 | clone.initialiseEventTypes(clone.currentJniTrace); | |
359 | ||
360 | // Verify that all those "default constructor" are safe to use | |
361 | clone.eventTimestamp = new LttngTimestamp(); | |
4641c2f7 | 362 | clone.eventSource = ""; //$NON-NLS-1$ |
12c155f5 FC |
363 | clone.eventType = new LttngEventType(); |
364 | clone.eventContent = new LttngEventContent(clone.currentLttngEvent); | |
4641c2f7 | 365 | clone.eventReference = getName(); |
12c155f5 FC |
366 | |
367 | // Create the skeleton event | |
368 | clone.currentLttngEvent = new LttngEvent(this, clone.eventTimestamp, clone.eventSource, clone.eventType, | |
369 | clone.eventContent, clone.eventReference, null); | |
370 | ||
371 | // Create a new current location | |
372 | clone.previousLocation = new LttngLocation(); | |
373 | ||
374 | // Set the currentEvent to the eventContent | |
375 | clone.eventContent.setEvent(clone.currentLttngEvent); | |
376 | ||
377 | // Set the start time of the trace | |
378 | setTimeRange(new TmfTimeRange(new LttngTimestamp(clone.currentJniTrace.getStartTime().getTime()), | |
379 | new LttngTimestamp(clone.currentJniTrace.getEndTime().getTime()))); | |
380 | } catch (CloneNotSupportedException e) { | |
381 | } | |
382 | ||
383 | return clone; | |
384 | } | |
385 | ||
386 | public String getTraceLibPath() { | |
387 | return traceLibPath; | |
388 | } | |
389 | ||
390 | /* | |
391 | * Fill out the HashMap with "Type" (Tracefile/Marker) | |
392 | * | |
393 | * This should be called at construction once the trace is open | |
394 | */ | |
395 | private void initialiseEventTypes(JniTrace trace) { | |
396 | // Work variables | |
397 | LttngEventType tmpType = null; | |
398 | String[] markerFieldsLabels = null; | |
399 | ||
400 | String newTracefileKey = null; | |
401 | Integer newMarkerKey = null; | |
402 | ||
403 | JniTracefile newTracefile = null; | |
404 | JniMarker newMarker = null; | |
405 | ||
406 | // First, obtain an iterator on TRACEFILES of owned by the TRACE | |
407 | Iterator<String> tracefileItr = trace.getTracefilesMap().keySet().iterator(); | |
408 | ||
409 | while (tracefileItr.hasNext()) { | |
410 | newTracefileKey = tracefileItr.next(); | |
411 | newTracefile = trace.getTracefilesMap().get(newTracefileKey); | |
412 | ||
413 | // From the TRACEFILE read, obtain its MARKER | |
414 | Iterator<Integer> markerItr = newTracefile.getTracefileMarkersMap().keySet().iterator(); | |
415 | while (markerItr.hasNext()) { | |
416 | newMarkerKey = markerItr.next(); | |
417 | newMarker = newTracefile.getTracefileMarkersMap().get(newMarkerKey); | |
418 | ||
419 | // From the MARKER we can obtain the MARKERFIELDS keys (i.e. | |
420 | // labels) | |
421 | markerFieldsLabels = newMarker.getMarkerFieldsHashMap().keySet() | |
422 | .toArray(new String[newMarker.getMarkerFieldsHashMap().size()]); | |
423 | ||
424 | tmpType = new LttngEventType(newTracefile.getTracefileName(), newTracefile.getCpuNumber(), | |
425 | newMarker.getName(), newMarkerKey.intValue(), markerFieldsLabels); | |
426 | ||
427 | // Add the type to the map/vector | |
428 | addEventTypeToMap(tmpType); | |
429 | } | |
430 | } | |
431 | } | |
432 | ||
433 | /* | |
434 | * Add a new type to the HashMap | |
435 | * | |
436 | * As the hashmap use a key format that is a bit dangerous to use, we should always add using this function. | |
437 | */ | |
438 | private void addEventTypeToMap(LttngEventType newEventType) { | |
439 | int newTypeKey = EventTypeKey.getEventTypeHash(newEventType); | |
440 | ||
441 | this.traceTypes.put(newTypeKey, newEventType); | |
442 | this.traceTypeNames.add(newTypeKey); | |
443 | } | |
444 | ||
12c155f5 FC |
445 | /** |
446 | * Return the latest saved location. Note : Modifying the returned location may result in buggy positionning! | |
447 | * | |
448 | * @return The LttngLocation as it was after the last operation. | |
449 | * | |
6c13869b | 450 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
12c155f5 FC |
451 | */ |
452 | @Override | |
453 | public synchronized ITmfLocation<?> getCurrentLocation() { | |
454 | return previousLocation; | |
455 | } | |
456 | ||
457 | /** | |
458 | * Position the trace to the event at the given location. | |
459 | * <p> | |
460 | * NOTE : Seeking by location is very fast compare to seeking by position but is still slower than "ReadNext", avoid | |
461 | * using it for small interval. | |
462 | * | |
463 | * @param location | |
464 | * Location of the event in the trace. If no event available at this exact location, we will position | |
465 | * ourself to the next one. | |
466 | * | |
467 | * @return The TmfContext that point to this event | |
468 | * | |
6c13869b FC |
469 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
470 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
471 | */ |
472 | @Override | |
473 | public synchronized TmfContext seekLocation(ITmfLocation<?> location) { | |
474 | ||
475 | // // [lmcfrch] | |
476 | // lastTime = 0; | |
477 | ||
478 | if (PrintDebug) { | |
479 | System.out.println("seekLocation(location) location -> " + location); //$NON-NLS-1$ | |
480 | } | |
481 | ||
482 | // If the location in context is null, create a new one | |
483 | LttngLocation curLocation = null; | |
484 | if (location == null) { | |
485 | curLocation = new LttngLocation(); | |
486 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
487 | context.setRank(ITmfContext.INITIAL_RANK); | |
488 | return context; | |
489 | } else { | |
490 | curLocation = (LttngLocation) location; | |
491 | } | |
492 | ||
493 | // *** NOTE : | |
494 | // Update to location should (and will) be done in SeekEvent. | |
495 | ||
496 | // The only seek valid in LTTng is with the time, we call | |
497 | // seekEvent(timestamp) | |
498 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
499 | ||
12c155f5 FC |
500 | return context; |
501 | } | |
502 | ||
503 | /** | |
504 | * Position the trace to the event at the given time. | |
505 | * <p> | |
506 | * NOTE : Seeking by time is very fast compare to seeking by position but is still slower than "ReadNext", avoid | |
507 | * using it for small interval. | |
508 | * | |
509 | * @param timestamp | |
510 | * Time of the event in the trace. If no event available at this exact time, we will position ourself to | |
511 | * the next one. | |
512 | * | |
513 | * @return The TmfContext that point to this event | |
514 | * | |
6c13869b FC |
515 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
516 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
517 | */ |
518 | @Override | |
4df4581d | 519 | public synchronized TmfContext seekEvent(ITmfTimestamp timestamp) { |
12c155f5 | 520 | |
12c155f5 FC |
521 | if (PrintDebug) { |
522 | System.out.println("seekEvent(timestamp) timestamp -> " + timestamp); //$NON-NLS-1$ | |
523 | } | |
524 | ||
525 | // Call JNI to seek | |
526 | currentJniTrace.seekToTime(new JniTime(timestamp.getValue())); | |
527 | ||
528 | // Save the time at which we seeked | |
529 | previousLocation.setOperationTime(timestamp.getValue()); | |
530 | // Set the operation marker as seek, to be able to detect we did "seek" | |
531 | // this event | |
532 | previousLocation.setLastOperationSeek(); | |
533 | ||
12c155f5 FC |
534 | LttngLocation curLocation = new LttngLocation(previousLocation); |
535 | ||
536 | return new TmfContext(curLocation); | |
537 | } | |
538 | ||
539 | /** | |
540 | * Position the trace to the event at the given position (rank). | |
541 | * <p> | |
542 | * NOTE : Seeking by position is very slow in LTTng, consider seeking by timestamp. | |
543 | * | |
544 | * @param position | |
545 | * Position (or rank) of the event in the trace, starting at 0. | |
546 | * | |
547 | * @return The TmfContext that point to this event | |
548 | * | |
6c13869b FC |
549 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
550 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
551 | */ |
552 | @Override | |
553 | public synchronized TmfContext seekEvent(long position) { | |
554 | ||
555 | if (PrintDebug) { | |
556 | System.out.println("seekEvent(position) position -> " + position); //$NON-NLS-1$ | |
557 | } | |
558 | ||
4df4581d | 559 | ITmfTimestamp timestamp = null; |
12c155f5 FC |
560 | long index = position / getCacheSize(); |
561 | ||
562 | // Get the timestamp of the closest check point to the given position | |
563 | if (fCheckpoints.size() > 0) { | |
564 | if (index >= fCheckpoints.size()) { | |
565 | index = fCheckpoints.size() - 1; | |
566 | } | |
567 | timestamp = fCheckpoints.elementAt((int) index).getTimestamp(); | |
568 | } | |
569 | // If none, take the start time of the trace | |
570 | else { | |
571 | timestamp = getStartTime(); | |
572 | } | |
573 | ||
574 | // Seek to the found time | |
575 | TmfContext tmpContext = seekEvent(timestamp); | |
576 | tmpContext.setRank((index + 1) * fIndexPageSize); | |
577 | previousLocation = (LttngLocation) tmpContext.getLocation(); | |
578 | ||
579 | // Ajust the index of the event we found at this check point position | |
580 | Long currentPosition = index * getCacheSize(); | |
581 | ||
582 | Long lastTimeValueRead = 0L; | |
583 | ||
584 | // Get the event at current position. This won't move to the next one | |
585 | JniEvent tmpJniEvent = currentJniTrace.findNextEvent(); | |
586 | // Now that we are positionned at the checkpoint, | |
587 | // we need to "readNext" (Position - CheckpointPosition) times or until | |
588 | // trace "run out" | |
589 | while ((tmpJniEvent != null) && (currentPosition < position)) { | |
590 | tmpJniEvent = currentJniTrace.readNextEvent(); | |
591 | currentPosition++; | |
592 | } | |
593 | ||
594 | // If we found our event, save its timestamp | |
595 | if (tmpJniEvent != null) { | |
596 | lastTimeValueRead = tmpJniEvent.getEventTime().getTime(); | |
597 | } | |
598 | ||
599 | // Set the operation marker as seek, to be able to detect we did "seek" | |
600 | // this event | |
601 | previousLocation.setLastOperationSeek(); | |
602 | // Save read event time | |
603 | previousLocation.setOperationTime(lastTimeValueRead); | |
604 | ||
605 | // *** VERIFY *** | |
606 | // Is that too paranoid? | |
607 | // | |
608 | // We don't trust what upper level could do with our internal location | |
609 | // so we create a new one to return instead | |
610 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
611 | ||
612 | return new TmfContext(curLocation); | |
613 | } | |
614 | ||
615 | @Override | |
616 | public TmfContext seekLocation(double ratio) { | |
617 | // TODO Auto-generated method stub | |
618 | return null; | |
619 | } | |
620 | ||
621 | @Override | |
622 | public double getLocationRatio(ITmfLocation<?> location) { | |
623 | // TODO Auto-generated method stub | |
624 | return 0; | |
625 | } | |
626 | ||
627 | /** | |
628 | * Return the event in the trace according to the given context. Read it if necessary. | |
629 | * <p> | |
630 | * Similar (same?) as ParseEvent except that calling GetNext twice read the next one the second time. | |
631 | * | |
632 | * @param context | |
633 | * Current TmfContext where to get the event | |
634 | * | |
635 | * @return The LttngEvent we read of null if no event are available | |
636 | * | |
6c13869b FC |
637 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
638 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
639 | */ |
640 | ||
641 | public int nbEventsRead = 0; | |
642 | ||
643 | @Override | |
644 | public synchronized LttngEvent getNextEvent(TmfContext context) { | |
645 | ||
646 | if (PrintDebug) { | |
647 | System.out.println("getNextEvent(context) context.getLocation() -> " //$NON-NLS-1$ | |
648 | + context.getLocation()); | |
649 | } | |
650 | ||
651 | LttngEvent returnedEvent = null; | |
652 | LttngLocation curLocation = null; | |
653 | ||
654 | curLocation = (LttngLocation) context.getLocation(); | |
655 | // If the location in context is null, create a new one | |
656 | if (curLocation == null) { | |
657 | curLocation = getCurrentLocation(context); | |
658 | } | |
659 | ||
12c155f5 FC |
660 | // *** Positioning trick : |
661 | // GetNextEvent only read the trace if : | |
662 | // 1- The last operation was NOT a ParseEvent --> A read is required | |
663 | // OR | |
664 | // 2- The time of the previous location is different from the current | |
665 | // one --> A seek + a read is required | |
666 | if ((!(curLocation.isLastOperationParse())) | |
667 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
668 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
669 | if (PrintDebug) { | |
670 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ | |
671 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
672 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
673 | } | |
674 | seekEvent(curLocation.getOperationTime()); | |
675 | } | |
676 | // Read the next event from the trace. The last one will NO LONGER | |
677 | // BE VALID. | |
678 | returnedEvent = readNextEvent(curLocation); | |
679 | ||
680 | } else { | |
681 | // No event was read, just return the one currently loaded (the last | |
682 | // one we read) | |
683 | returnedEvent = currentLttngEvent; | |
684 | ||
685 | // *** IMPORTANT! | |
686 | // Reset (erase) the operation marker to both location, to be able | |
687 | // to detect we did NOT "read" this event | |
688 | previousLocation.resetLocationState(); | |
689 | curLocation.resetLocationState(); | |
690 | } | |
691 | ||
692 | // If we read an event, set it's time to the locations (both previous | |
693 | // and current) | |
694 | if (returnedEvent != null) { | |
695 | setPreviousAndCurrentTimes(context, returnedEvent, curLocation); | |
12c155f5 FC |
696 | } |
697 | ||
698 | return returnedEvent; | |
699 | } | |
700 | ||
701 | // this method was extracted for profiling purposes | |
702 | private void setPreviousAndCurrentTimes(TmfContext context, LttngEvent returnedEvent, LttngLocation curLocation) { | |
703 | ||
4df4581d | 704 | ITmfTimestamp eventTimestamp = returnedEvent.getTimestamp(); |
12c155f5 FC |
705 | // long eventTime = eventTimestamp.getValue(); |
706 | previousLocation.setOperationTime(eventTimestamp.getValue()); | |
707 | curLocation.setOperationTime(eventTimestamp.getValue()); | |
708 | updateIndex(context, context.getRank(), eventTimestamp); | |
709 | context.updateRank(1); | |
710 | } | |
711 | ||
d7dbf09a | 712 | protected void updateIndex(TmfContext context, long rank, ITmfTimestamp timestamp) { |
12c155f5 FC |
713 | |
714 | if (getStartTime().compareTo(timestamp, false) > 0) | |
715 | setStartTime(timestamp); | |
716 | if (getEndTime().compareTo(timestamp, false) < 0) | |
717 | setEndTime(timestamp); | |
718 | if (rank != ITmfContext.UNKNOWN_RANK) { | |
719 | if (fNbEvents <= rank) | |
720 | fNbEvents = rank + 1; | |
721 | // Build the index as we go along | |
722 | if ((rank % fIndexPageSize) == 0) { | |
723 | // Determine the table position | |
724 | long position = rank / fIndexPageSize; | |
725 | // Add new entry at proper location (if empty) | |
726 | if (fCheckpoints.size() == position) { | |
727 | addCheckPoint(context, timestamp); | |
728 | } | |
729 | } | |
730 | } | |
731 | } | |
732 | ||
d7dbf09a | 733 | private void addCheckPoint(TmfContext context, ITmfTimestamp timestamp) { |
12c155f5 FC |
734 | ITmfLocation<?> location = context.getLocation().clone(); |
735 | fCheckpoints.add(new TmfCheckpoint(timestamp.clone(), location)); | |
736 | } | |
737 | ||
738 | // this method was extracted for profiling purposes | |
739 | private LttngEvent readNextEvent(LttngLocation curLocation) { | |
740 | LttngEvent returnedEvent; | |
741 | // Read the next event from the trace. The last one will NO LONGER BE | |
742 | // VALID. | |
743 | returnedEvent = readEvent(curLocation); | |
744 | nbEventsRead++; | |
745 | ||
746 | // Set the operation marker as read to both location, to be able to | |
747 | // detect we did "read" this event | |
748 | previousLocation.setLastOperationReadNext(); | |
749 | curLocation.setLastOperationReadNext(); | |
750 | return returnedEvent; | |
751 | } | |
752 | ||
753 | // this method was extracted for profiling purposes | |
754 | private LttngLocation getCurrentLocation(TmfContext context) { | |
755 | LttngLocation curLocation; | |
756 | curLocation = new LttngLocation(); | |
757 | context.setLocation(curLocation); | |
758 | return curLocation; | |
759 | } | |
760 | ||
761 | /** | |
762 | * Return the event in the trace according to the given context. Read it if necessary. | |
763 | * <p> | |
764 | * Similar (same?) as GetNextEvent except that calling ParseEvent twice will return the same event | |
765 | * | |
766 | * @param context | |
767 | * Current TmfContext where to get the event | |
768 | * | |
769 | * @return The LttngEvent we read of null if no event are available | |
770 | * | |
6c13869b FC |
771 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
772 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
773 | */ |
774 | @Override | |
775 | public synchronized LttngEvent parseEvent(TmfContext context) { | |
776 | ||
777 | if (PrintDebug) { | |
778 | System.out.println("parseEvent(context) context.getLocation() -> " //$NON-NLS-1$ | |
779 | + context.getLocation()); | |
780 | } | |
781 | ||
782 | LttngEvent returnedEvent = null; | |
783 | LttngLocation curLocation = null; | |
784 | ||
785 | // If the location in context is null, create a new one | |
786 | if (context.getLocation() == null) { | |
787 | curLocation = new LttngLocation(); | |
788 | context.setLocation(curLocation); | |
789 | } | |
790 | // Otherwise, we use the one in context; it should be a valid | |
791 | // LttngLocation | |
792 | else { | |
793 | curLocation = (LttngLocation) context.getLocation(); | |
794 | } | |
795 | ||
796 | // *** HACK *** | |
797 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
798 | // once ParseEvent() is called | |
799 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
800 | // event. | |
801 | // So, before "Parsing" an event, we have to make sure we didn't "Read" | |
802 | // it alreafy. | |
803 | // Also, "Reading" invalidate the previous Event in LTTNG and seek back | |
804 | // is very costly, | |
805 | // so calling twice "Parse" will return the same event, giving a way to | |
806 | // get the "Currently loaded" event | |
807 | ||
808 | // *** Positionning trick : | |
809 | // ParseEvent only read the trace if : | |
810 | // 1- The last operation was NOT a ParseEvent or a GetNextEvent --> A | |
811 | // read is required | |
812 | // OR | |
813 | // 2- The time of the previous location is different from the current | |
814 | // one --> A seek + a read is required | |
815 | if (((!(curLocation.isLastOperationParse())) && ((!(curLocation.isLastOperationReadNext())))) | |
816 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
817 | // Previous time != Current time : We need to reposition to the | |
818 | // current time | |
819 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
820 | if (PrintDebug) { | |
821 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ | |
822 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
823 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
824 | } | |
825 | seekEvent(curLocation.getOperationTime()); | |
826 | } | |
827 | ||
828 | // Read the next event from the trace. The last one will NO LONGER | |
829 | // BE VALID. | |
830 | returnedEvent = readEvent(curLocation); | |
831 | } else { | |
832 | // No event was read, just return the one currently loaded (the last | |
833 | // one we read) | |
834 | returnedEvent = currentLttngEvent; | |
835 | } | |
836 | ||
837 | // If we read an event, set it's time to the locations (both previous | |
838 | // and current) | |
839 | if (returnedEvent != null) { | |
840 | previousLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
841 | curLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
842 | } | |
843 | ||
844 | // Set the operation marker as parse to both location, to be able to | |
845 | // detect we already "read" this event | |
846 | previousLocation.setLastOperationParse(); | |
847 | curLocation.setLastOperationParse(); | |
848 | ||
849 | return returnedEvent; | |
850 | } | |
851 | ||
852 | /* | |
853 | * Read the next event from the JNI and convert it as Lttng Event<p> | |
854 | * | |
855 | * @param location Current LttngLocation that to be updated with the event timestamp | |
856 | * | |
857 | * @return The LttngEvent we read of null if no event are available | |
858 | * | |
859 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
860 | * | |
861 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
862 | */ | |
863 | private synchronized LttngEvent readEvent(LttngLocation location) { | |
864 | LttngEvent returnedEvent = null; | |
865 | JniEvent tmpEvent = null; | |
866 | ||
867 | // Read the next event from JNI. THIS WILL INVALIDATE THE CURRENT LTTNG | |
868 | // EVENT. | |
869 | tmpEvent = currentJniTrace.readNextEvent(); | |
870 | ||
871 | if (tmpEvent != null) { | |
872 | // *** NOTE | |
873 | // Convert will update the currentLttngEvent | |
874 | returnedEvent = convertJniEventToTmf(tmpEvent); | |
875 | ||
876 | location.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
877 | } | |
878 | // *** NOTE | |
879 | // If the read failed (likely the last event in the trace), set the | |
880 | // LastReadTime to the JNI time | |
881 | // That way, even if we try to read again, we will step over the bogus | |
882 | // seek and read | |
883 | else { | |
884 | location.setOperationTime(getEndTime().getValue() + 1); | |
885 | } | |
886 | ||
887 | return returnedEvent; | |
888 | } | |
889 | ||
890 | /** | |
891 | * Method to convert a JniEvent into a LttngEvent. | |
892 | * <p> | |
893 | * | |
894 | * Note : This method will call LttngEvent convertEventJniToTmf(JniEvent, boolean) with a default value for | |
895 | * isParsingNeeded | |
896 | * | |
897 | * @param newEvent | |
898 | * The JniEvent to convert into LttngEvent | |
899 | * | |
900 | * @return The converted LttngEvent | |
901 | * | |
902 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
6c13869b | 903 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
904 | */ |
905 | public synchronized LttngEvent convertJniEventToTmf(JniEvent newEvent) { | |
906 | currentLttngEvent = convertJniEventToTmf(newEvent, IS_PARSING_NEEDED_DEFAULT); | |
907 | ||
908 | return currentLttngEvent; | |
909 | } | |
910 | ||
911 | /** | |
912 | * Method to convert a JniEvent into a LttngEvent | |
913 | * | |
914 | * @param jniEvent | |
915 | * The JniEvent to convert into LttngEvent | |
916 | * @param isParsingNeeded | |
917 | * A boolean value telling if the event should be parsed or not. | |
918 | * | |
919 | * @return The converted LttngEvent | |
920 | * | |
921 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
6c13869b | 922 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
923 | */ |
924 | public synchronized LttngEvent convertJniEventToTmf(JniEvent jniEvent, boolean isParsingNeeded) { | |
925 | ||
926 | if (UniqueEvent) { | |
927 | ||
928 | // *** | |
929 | // UNHACKED : We can no longer do that because TCF need to maintain | |
930 | // several events at once. | |
931 | // This is very slow to do so in LTTng, this has to be temporary. | |
932 | // *** HACK *** | |
933 | // To save time here, we only set value instead of allocating new | |
934 | // object | |
935 | // This give an HUGE performance improvement | |
936 | // all allocation done in the LttngTrace constructor | |
937 | // *** | |
938 | eventTimestamp.setValue(jniEvent.getEventTime().getTime()); | |
99005796 | 939 | eventSource = jniEvent.requestEventSource(); |
12c155f5 FC |
940 | |
941 | eventType = traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent)); | |
942 | ||
4641c2f7 FC |
943 | String fullTracePath = getName(); |
944 | String reference = fullTracePath.substring(fullTracePath.lastIndexOf('/') + 1); | |
945 | currentLttngEvent.setReference(reference); | |
12c155f5 FC |
946 | |
947 | eventContent.emptyContent(); | |
948 | ||
949 | currentLttngEvent.setType(eventType); | |
950 | // Save the jni reference | |
951 | currentLttngEvent.updateJniEventReference(jniEvent); | |
952 | ||
953 | // Parse now if was asked | |
954 | // Warning : THIS IS SLOW | |
955 | if (isParsingNeeded) { | |
956 | eventContent.getFields(); | |
957 | } | |
958 | ||
959 | return currentLttngEvent; | |
960 | } else { | |
961 | return convertJniEventToTmfMultipleEventEvilFix(jniEvent, isParsingNeeded); | |
962 | } | |
963 | ||
964 | } | |
965 | ||
966 | /** | |
967 | * This method is a temporary fix to support multiple events at once in TMF This is expected to be slow and should | |
968 | * be fixed in another way. See comment in convertJniEventToTmf(); | |
969 | * | |
970 | * @param jniEvent | |
971 | * The current JNI Event | |
972 | * @return Current Lttng Event fully parsed | |
973 | */ | |
974 | private synchronized LttngEvent convertJniEventToTmfMultipleEventEvilFix(JniEvent jniEvent, boolean isParsingNeeded) { | |
975 | // *** HACK *** | |
976 | // Below : the "fix" with all the new and the full-parse | |
977 | // Allocating new memory is slow. | |
978 | // Parsing every events is very slow. | |
979 | eventTimestamp = new LttngTimestamp(jniEvent.getEventTime().getTime()); | |
99005796 | 980 | eventSource = jniEvent.requestEventSource(); |
4641c2f7 | 981 | eventReference = getName(); |
12c155f5 FC |
982 | eventType = new LttngEventType(traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent))); |
983 | eventContent = new LttngEventContent(currentLttngEvent); | |
984 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, | |
985 | null); | |
986 | ||
987 | // The jni reference is no longer reliable but we will keep it anyhow | |
988 | currentLttngEvent.updateJniEventReference(jniEvent); | |
989 | // Ensure that the content is correctly set | |
990 | eventContent.setEvent(currentLttngEvent); | |
991 | ||
992 | // Parse the event if it was needed | |
993 | // *** WARNING *** | |
994 | // ONLY for testing, NOT parsing events with non-unique events WILL | |
995 | // result in segfault in the JVM | |
996 | if (isParsingNeeded) { | |
997 | eventContent.getFields(); | |
998 | } | |
999 | ||
1000 | return currentLttngEvent; | |
1001 | } | |
1002 | ||
1003 | /** | |
1004 | * Reference to the current LttngTrace we are reading from. | |
1005 | * <p> | |
1006 | * | |
1007 | * Note : This bypass the framework and should not be use, except for testing! | |
1008 | * | |
1009 | * @return Reference to the current LttngTrace | |
1010 | * | |
1011 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1012 | */ | |
1013 | public JniTrace getCurrentJniTrace() { | |
1014 | return currentJniTrace; | |
1015 | } | |
1016 | ||
1017 | /** | |
1018 | * Return a reference to the current LttngEvent we have in memory. | |
1019 | * | |
1020 | * @return The current (last read) LttngEvent | |
1021 | * | |
6c13869b | 1022 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
1023 | */ |
1024 | public synchronized LttngEvent getCurrentEvent() { | |
1025 | return currentLttngEvent; | |
1026 | } | |
1027 | ||
1028 | /** | |
1029 | * Get the major version number for the current trace | |
1030 | * | |
1031 | * @return Version major or -1 if unknown | |
1032 | * | |
1033 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1034 | * | |
1035 | */ | |
1036 | public short getVersionMajor() { | |
1037 | if (currentJniTrace != null) { | |
1038 | return currentJniTrace.getLttMajorVersion(); | |
1039 | } else { | |
1040 | return -1; | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | /** | |
1045 | * Get the minor version number for the current trace | |
1046 | * | |
1047 | * @return Version minor or -1 if unknown | |
1048 | * | |
1049 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1050 | * | |
1051 | */ | |
1052 | public short getVersionMinor() { | |
1053 | if (currentJniTrace != null) { | |
1054 | return currentJniTrace.getLttMinorVersion(); | |
1055 | } else { | |
1056 | return -1; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | /** | |
1061 | * Get the number of CPU for this trace | |
1062 | * | |
1063 | * @return Number of CPU or -1 if unknown | |
1064 | * | |
1065 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1066 | * | |
1067 | */ | |
1068 | public int getCpuNumber() { | |
1069 | if (currentJniTrace != null) { | |
1070 | return currentJniTrace.getCpuNumber(); | |
1071 | } else { | |
1072 | return -1; | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | /** | |
1077 | * Print the content of the checkpoint vector. | |
1078 | * <p> | |
1079 | * | |
1080 | * This is intended for debug purpose only. | |
1081 | */ | |
1082 | public void printCheckpointsVector() { | |
1083 | System.out.println("StartTime : " //$NON-NLS-1$ | |
1084 | + getTimeRange().getStartTime().getValue()); | |
1085 | System.out.println("EndTime : " //$NON-NLS-1$ | |
1086 | + getTimeRange().getEndTime().getValue()); | |
1087 | ||
1088 | for (int pos = 0; pos < fCheckpoints.size(); pos++) { | |
1089 | System.out.print(pos + ": " + "\t"); //$NON-NLS-1$ //$NON-NLS-2$ | |
1090 | System.out.print(fCheckpoints.get(pos).getTimestamp() + "\t"); //$NON-NLS-1$ | |
1091 | System.out.println(fCheckpoints.get(pos).getLocation()); | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | @Override | |
1096 | public synchronized void dispose() { | |
1097 | if (currentJniTrace != null) | |
1098 | currentJniTrace.closeTrace(); | |
1099 | super.dispose(); | |
1100 | } | |
1101 | ||
1102 | /** | |
1103 | * Return a String identifying this trace. | |
1104 | * | |
1105 | * @return String that identify this trace | |
1106 | */ | |
1107 | @Override | |
3b38ea61 | 1108 | @SuppressWarnings("nls") |
12c155f5 FC |
1109 | public String toString() { |
1110 | String returnedData = ""; | |
64fe8e8a | 1111 | |
12c155f5 FC |
1112 | returnedData += "Path :" + getPath() + " "; |
1113 | returnedData += "Trace:" + currentJniTrace + " "; | |
1114 | returnedData += "Event:" + currentLttngEvent; | |
64fe8e8a | 1115 | |
12c155f5 FC |
1116 | return returnedData; |
1117 | } | |
cb866e08 | 1118 | |
28b94d61 FC |
1119 | } |
1120 | ||
1121 | /* | |
1122 | * EventTypeKey inner class | |
1123 | * | |
12c155f5 | 1124 | * This class is used to make the process of generating the HashMap key more transparent and so less error prone to use |
28b94d61 | 1125 | */ |
64fe8e8a | 1126 | final class EventTypeKey { |
12c155f5 FC |
1127 | // *** WARNING *** |
1128 | // These two getEventTypeKey() functions should ALWAYS construct the key the | |
1129 | // same ways! | |
1130 | // Otherwise, every type search will fail! | |
64fe8e8a | 1131 | |
12c155f5 FC |
1132 | // added final to encourage inlining. |
1133 | ||
1134 | // generating a hash code by hand to avoid a string creation | |
1135 | final static public int getEventTypeHash(LttngEventType newEventType) { | |
1136 | return generateHash(newEventType.getTracefileName(), newEventType.getCpuId(), newEventType.getMarkerName()); | |
1137 | } | |
1138 | ||
1139 | final private static int generateHash(String traceFileName, long cpuNumber, String markerName) { | |
1140 | // 0x1337 is a prime number. The number of CPUs is always under 8192 on | |
1141 | // the current kernel, so this will work with the current linux kernel. | |
1142 | int cpuHash = (int) (cpuNumber * (0x1337)); | |
1143 | return traceFileName.hashCode() ^ (cpuHash) ^ markerName.hashCode(); | |
1144 | } | |
1145 | ||
1146 | // generating a hash code by hand to avoid a string creation | |
1147 | final static public int getEventTypeHash(JniEvent newEvent) { | |
1148 | return generateHash(newEvent.getParentTracefile().getTracefileName(), newEvent.getParentTracefile() | |
1149 | .getCpuNumber(), newEvent.requestEventMarker().getName()); | |
1150 | } | |
64fe8e8a | 1151 | |
a3767fd9 | 1152 | } |