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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 | ||
5945cec9 | 14 | package org.eclipse.linuxtools.internal.lttng.core.trace; |
5d10d135 | 15 | |
28b94d61 FC |
16 | import java.util.HashMap; |
17 | import java.util.Iterator; | |
18 | import java.util.Vector; | |
19 | ||
12c155f5 | 20 | import org.eclipse.core.resources.IProject; |
25e48683 | 21 | import org.eclipse.core.resources.IResource; |
5945cec9 FC |
22 | import org.eclipse.linuxtools.internal.lttng.core.TraceHelper; |
23 | import org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent; | |
24 | import org.eclipse.linuxtools.internal.lttng.core.event.LttngEventContent; | |
25 | import org.eclipse.linuxtools.internal.lttng.core.event.LttngEventType; | |
26 | import org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation; | |
27 | import org.eclipse.linuxtools.internal.lttng.core.event.LttngTimestamp; | |
28 | import org.eclipse.linuxtools.internal.lttng.core.exceptions.LttngException; | |
29 | import org.eclipse.linuxtools.internal.lttng.core.tracecontrol.utility.LiveTraceManager; | |
ce38c104 | 30 | import org.eclipse.linuxtools.internal.lttng.jni.common.JniTime; |
5d10d135 | 31 | import org.eclipse.linuxtools.lttng.jni.JniEvent; |
28b94d61 | 32 | import org.eclipse.linuxtools.lttng.jni.JniMarker; |
5d10d135 | 33 | import org.eclipse.linuxtools.lttng.jni.JniTrace; |
28b94d61 | 34 | import org.eclipse.linuxtools.lttng.jni.JniTracefile; |
004f471b | 35 | import org.eclipse.linuxtools.lttng.jni.factory.JniTraceFactory; |
4df4581d | 36 | import org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp; |
1b70b6dc | 37 | import org.eclipse.linuxtools.tmf.core.event.TmfEvent; |
6c13869b FC |
38 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; |
39 | import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp; | |
b4f71e4a | 40 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
1b70b6dc PT |
41 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType; |
42 | import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest; | |
43 | import org.eclipse.linuxtools.tmf.core.signal.TmfTraceUpdatedSignal; | |
6c13869b | 44 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
7e6347b0 | 45 | import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser; |
6c13869b | 46 | import org.eclipse.linuxtools.tmf.core.trace.ITmfLocation; |
a5f08d16 | 47 | import org.eclipse.linuxtools.tmf.core.trace.TmfCheckpointIndexer; |
6c13869b | 48 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; |
9e0640dc | 49 | import org.eclipse.linuxtools.tmf.core.trace.TmfExperiment; |
6c13869b | 50 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; |
5d10d135 | 51 | |
3fbd810a | 52 | class LTTngTraceException extends LttngException { |
cbdacf03 | 53 | |
12c155f5 | 54 | static final long serialVersionUID = -1636648737081868146L; |
3fbd810a | 55 | |
cbdacf03 | 56 | public LTTngTraceException(final String errMsg) { |
12c155f5 FC |
57 | super(errMsg); |
58 | } | |
3fbd810a FC |
59 | } |
60 | ||
5d10d135 | 61 | /** |
64fe8e8a FC |
62 | * <b><u>LTTngTrace</u></b> |
63 | * <p> | |
07d9e2ee | 64 | * |
cbdacf03 FC |
65 | * LTTng trace implementation. It accesses the C trace handling library |
66 | * (seeking, reading and parsing) through the JNI component. | |
5d10d135 | 67 | */ |
7e6347b0 | 68 | public class LTTngTrace extends TmfTrace<LttngEvent> implements ITmfEventParser<LttngEvent> { |
9b635e61 | 69 | |
212550ba FC |
70 | public final static boolean PRINT_DEBUG = false; |
71 | public final static boolean UNIQUE_EVENT = true; | |
12c155f5 FC |
72 | |
73 | private final static boolean SHOW_LTT_DEBUG_DEFAULT = false; | |
212550ba | 74 | private final static boolean IS_PARSING_NEEDED_DEFAULT = !UNIQUE_EVENT; |
12c155f5 | 75 | private final static int CHECKPOINT_PAGE_SIZE = 50000; |
1b70b6dc | 76 | private final static long LTTNG_STREAMING_INTERVAL = 2000; // in ms |
12c155f5 FC |
77 | |
78 | // Reference to our JNI trace | |
c5b45b39 FC |
79 | private JniTrace currentJniTrace; |
80 | ||
81 | LttngTimestamp eventTimestamp; | |
99005796 | 82 | String eventSource; |
c5b45b39 | 83 | LttngEventContent eventContent; |
4641c2f7 | 84 | String eventReference; |
12c155f5 FC |
85 | |
86 | // The actual event | |
c5b45b39 | 87 | LttngEvent currentLttngEvent; |
12c155f5 FC |
88 | |
89 | // The current location | |
c5b45b39 FC |
90 | LttngLocation previousLocation; |
91 | ||
92 | LttngEventType eventType; | |
12c155f5 | 93 | |
12c155f5 | 94 | // Hashmap of the possible types of events (Tracefile/CPU/Marker in the JNI) |
c5b45b39 | 95 | HashMap<Integer, LttngEventType> traceTypes; |
cbdacf03 | 96 | |
12c155f5 | 97 | // This vector will be used to quickly find a marker name from a position |
c5b45b39 | 98 | Vector<Integer> traceTypeNames; |
cbdacf03 | 99 | |
c5b45b39 | 100 | private String traceLibPath; |
12c155f5 FC |
101 | |
102 | public LTTngTrace() { | |
103 | } | |
104 | ||
f4c52cea | 105 | @Override |
cbdacf03 | 106 | public boolean validate(final IProject project, final String path) { |
2352aed9 | 107 | if (fileExists(path)) { |
cbdacf03 | 108 | final String traceLibPath = TraceHelper.getTraceLibDirFromProject(project); |
12c155f5 | 109 | try { |
cbdacf03 | 110 | final LTTngTraceVersion version = new LTTngTraceVersion(path, traceLibPath); |
12c155f5 | 111 | return version.isValidLttngTrace(); |
cbdacf03 | 112 | } catch (final LttngException e) { |
12c155f5 FC |
113 | } |
114 | } | |
115 | return false; | |
116 | } | |
117 | ||
a5f08d16 | 118 | @SuppressWarnings({ "unchecked", "rawtypes" }) |
f4c52cea | 119 | @Override |
25e48683 | 120 | public synchronized void initTrace(final IResource resource, final String path, final Class<LttngEvent> eventType) |
b4f71e4a | 121 | throws TmfTraceException { |
09e86496 | 122 | super.initialize(resource, path, eventType); |
a5f08d16 | 123 | setIndexer(new TmfCheckpointIndexer(this, getCacheSize())); |
09e86496 FC |
124 | initialize(resource, path, eventType); |
125 | } | |
126 | ||
127 | @Override | |
128 | protected synchronized void initialize(final IResource resource, final String path, final Class<LttngEvent> eventType) | |
b4f71e4a | 129 | throws TmfTraceException { |
12c155f5 | 130 | try { |
59112f51 BH |
131 | if (resource != null) { |
132 | IProject project = resource.getProject(); | |
133 | traceLibPath = (project != null) ? TraceHelper.getTraceLibDirFromProject(project) : null; | |
134 | } | |
12c155f5 | 135 | currentJniTrace = JniTraceFactory.getJniTrace(path, traceLibPath, SHOW_LTT_DEBUG_DEFAULT); |
cbdacf03 | 136 | } catch (final Exception e) { |
b4f71e4a | 137 | throw new TmfTraceException(e.getMessage()); |
12c155f5 FC |
138 | } |
139 | ||
140 | // Export all the event types from the JNI side | |
141 | traceTypes = new HashMap<Integer, LttngEventType>(); | |
142 | traceTypeNames = new Vector<Integer>(); | |
143 | initialiseEventTypes(currentJniTrace); | |
144 | ||
00641a97 | 145 | // Build the re-used event structure |
12c155f5 | 146 | eventTimestamp = new LttngTimestamp(); |
4641c2f7 | 147 | eventSource = ""; //$NON-NLS-1$ |
12c155f5 FC |
148 | this.eventType = new LttngEventType(); |
149 | eventContent = new LttngEventContent(currentLttngEvent); | |
4641c2f7 | 150 | eventReference = getName(); |
12c155f5 FC |
151 | |
152 | // Create the skeleton event | |
153 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, this.eventType, eventContent, | |
154 | eventReference, null); | |
155 | ||
156 | // Create a new current location | |
157 | previousLocation = new LttngLocation(); | |
158 | ||
159 | // Set the currentEvent to the eventContent | |
160 | eventContent.setEvent(currentLttngEvent); | |
161 | ||
0316808c FC |
162 | setParser((ITmfEventParser<LttngEvent>) this); |
163 | setCacheSize(CHECKPOINT_PAGE_SIZE); | |
b4f71e4a | 164 | |
1b70b6dc PT |
165 | initializeStreamingMonitor(); |
166 | } | |
167 | ||
168 | private void initializeStreamingMonitor() { | |
cbdacf03 FC |
169 | final JniTrace jniTrace = getCurrentJniTrace(); |
170 | if (jniTrace == null | |
171 | || (!jniTrace.isLiveTraceSupported() || !LiveTraceManager.isLiveTrace(jniTrace.getTracepath()))) { | |
1b70b6dc | 172 | // Set the time range of the trace |
07671572 | 173 | final ITmfContext context = seekEvent(0); |
c32744d6 | 174 | final LttngEvent event = getNext(context); |
cbdacf03 FC |
175 | final LttngTimestamp startTime = new LttngTimestamp(event.getTimestamp()); |
176 | final LttngTimestamp endTime = new LttngTimestamp(currentJniTrace.getEndTime().getTime()); | |
1b70b6dc | 177 | setTimeRange(new TmfTimeRange(startTime, endTime)); |
cbdacf03 | 178 | final TmfTraceUpdatedSignal signal = new TmfTraceUpdatedSignal(this, this, getTimeRange()); |
1b70b6dc PT |
179 | broadcast(signal); |
180 | return; | |
181 | } | |
182 | ||
12c155f5 | 183 | // Set the time range of the trace |
07671572 | 184 | final ITmfContext context = seekEvent(0); |
c32744d6 | 185 | final LttngEvent event = getNext(context); |
a4115405 FC |
186 | setEndTime(TmfTimestamp.BIG_BANG); |
187 | final long startTime = event != null ? event.getTimestamp().getValue() : TmfTimestamp.BIG_BANG.getValue(); | |
0316808c | 188 | setStreamingInterval(LTTNG_STREAMING_INTERVAL); |
1b70b6dc PT |
189 | |
190 | final Thread thread = new Thread("Streaming Monitor for trace " + getName()) { //$NON-NLS-1$ | |
cbdacf03 | 191 | |
1b70b6dc PT |
192 | LttngTimestamp safeTimestamp = null; |
193 | TmfTimeRange timeRange = null; | |
194 | ||
8fd82db5 | 195 | @SuppressWarnings({ "unchecked", "restriction" }) |
1b70b6dc PT |
196 | @Override |
197 | public void run() { | |
198 | while (!fExecutor.isShutdown()) { | |
cbdacf03 | 199 | final TmfExperiment<?> experiment = TmfExperiment.getCurrentExperiment(); |
1b70b6dc | 200 | if (experiment != null) { |
f4c52cea | 201 | @SuppressWarnings("rawtypes") |
cbdacf03 FC |
202 | final TmfEventRequest request = new TmfEventRequest<TmfEvent>(TmfEvent.class, |
203 | TmfTimeRange.ETERNITY, 0, ExecutionType.FOREGROUND) { | |
204 | ||
1b70b6dc PT |
205 | @Override |
206 | public void handleCompleted() { | |
207 | updateJniTrace(); | |
208 | } | |
209 | }; | |
210 | synchronized (experiment) { | |
211 | experiment.sendRequest(request); | |
212 | } | |
213 | try { | |
214 | request.waitForCompletion(); | |
cbdacf03 | 215 | } catch (final InterruptedException e) { |
1b70b6dc | 216 | } |
cbdacf03 | 217 | } else |
1b70b6dc | 218 | updateJniTrace(); |
1b70b6dc PT |
219 | try { |
220 | Thread.sleep(LTTNG_STREAMING_INTERVAL); | |
cbdacf03 | 221 | } catch (final InterruptedException e) { |
1b70b6dc PT |
222 | } |
223 | } | |
224 | } | |
cbdacf03 | 225 | |
1b70b6dc | 226 | private void updateJniTrace() { |
cbdacf03 | 227 | final JniTrace jniTrace = getCurrentJniTrace(); |
1b70b6dc | 228 | currentJniTrace.updateTrace(); |
cbdacf03 FC |
229 | final long endTime = jniTrace.getEndTime().getTime(); |
230 | final LttngTimestamp startTimestamp = new LttngTimestamp(startTime); | |
231 | final LttngTimestamp endTimestamp = new LttngTimestamp(endTime); | |
232 | if (safeTimestamp != null && safeTimestamp.compareTo(getTimeRange().getEndTime(), false) > 0) | |
1b70b6dc | 233 | timeRange = new TmfTimeRange(startTimestamp, safeTimestamp); |
cbdacf03 | 234 | else |
1b70b6dc | 235 | timeRange = null; |
1b70b6dc | 236 | safeTimestamp = endTimestamp; |
cbdacf03 | 237 | if (timeRange != null) |
1b70b6dc | 238 | setTimeRange(timeRange); |
1b70b6dc PT |
239 | } |
240 | }; | |
241 | thread.start(); | |
242 | } | |
c5b45b39 | 243 | |
12c155f5 FC |
244 | /** |
245 | * Default Constructor. | |
246 | * <p> | |
12c155f5 | 247 | * |
cbdacf03 FC |
248 | * @param name Name of the trace |
249 | * @param path Path to a <b>directory</b> that contain an LTTng trace. | |
250 | * | |
251 | * @exception Exception (most likely LTTngTraceException or | |
252 | * FileNotFoundException) | |
12c155f5 | 253 | */ |
25e48683 | 254 | public LTTngTrace(final IResource resource, final String path) throws Exception { |
12c155f5 | 255 | // Call with "wait for completion" true and "skip indexing" false |
25e48683 | 256 | this(resource, path, null, true, false); |
12c155f5 FC |
257 | } |
258 | ||
259 | /** | |
260 | * Constructor, with control over the indexing. | |
261 | * <p> | |
262 | * | |
cbdacf03 FC |
263 | * @param name Name of the trace |
264 | * @param path Path to a <b>directory</b> that contain an LTTng trace. | |
265 | * @param waitForCompletion Should we wait for indexign to complete before | |
266 | * moving on. | |
12c155f5 | 267 | * |
cbdacf03 FC |
268 | * @exception Exception (most likely LTTngTraceException or |
269 | * FileNotFoundException) | |
12c155f5 | 270 | */ |
25e48683 | 271 | public LTTngTrace(final IResource resource, final String path, final boolean waitForCompletion) throws Exception { |
12c155f5 | 272 | // Call with "skip indexing" false |
25e48683 | 273 | this(resource, path, null, waitForCompletion, true); |
12c155f5 FC |
274 | } |
275 | ||
276 | /** | |
cbdacf03 FC |
277 | * Default constructor, with control over the indexing and possibility to |
278 | * bypass indexation | |
12c155f5 FC |
279 | * <p> |
280 | * | |
cbdacf03 FC |
281 | * @param name Name of the trace |
282 | * @param path Path to a <b>directory</b> that contain an LTTng trace. | |
283 | * @param traceLibPath Path to a <b>directory</b> that contains LTTng trace | |
284 | * libraries. | |
285 | * @param waitForCompletion Should we wait for indexign to complete before | |
286 | * moving on. | |
287 | * @param bypassIndexing Should we bypass indexing completly? This is should | |
288 | * only be useful for unit testing. | |
12c155f5 | 289 | * |
cbdacf03 FC |
290 | * @exception Exception (most likely LTTngTraceException or |
291 | * FileNotFoundException) | |
12c155f5 FC |
292 | * |
293 | */ | |
25e48683 | 294 | public LTTngTrace(final IResource resource, final String path, final String traceLibPath, final boolean waitForCompletion, |
cbdacf03 | 295 | final boolean bypassIndexing) |
f17b2f70 | 296 | throws Exception { |
09e86496 FC |
297 | // super(resource, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE, false); |
298 | super(resource, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE); | |
299 | initialize(resource, path, LttngEvent.class); | |
20658947 FC |
300 | // if (!bypassIndexing) |
301 | // indexTrace(false); | |
12c155f5 | 302 | this.traceLibPath = traceLibPath; |
12c155f5 FC |
303 | } |
304 | ||
305 | /* | |
306 | * Copy constructor is forbidden for LttngEvenmStream | |
307 | */ | |
cbdacf03 | 308 | public LTTngTrace(final LTTngTrace other) throws Exception { |
25e48683 | 309 | this(other.getResource(), other.getPath(), other.getTraceLibPath(), false, true); |
00641a97 | 310 | setTimeRange(new TmfTimeRange(new LttngTimestamp(other.getStartTime()), new LttngTimestamp(other.getEndTime()))); |
12c155f5 FC |
311 | } |
312 | ||
12c155f5 FC |
313 | public String getTraceLibPath() { |
314 | return traceLibPath; | |
315 | } | |
316 | ||
317 | /* | |
318 | * Fill out the HashMap with "Type" (Tracefile/Marker) | |
319 | * | |
320 | * This should be called at construction once the trace is open | |
321 | */ | |
cbdacf03 | 322 | private void initialiseEventTypes(final JniTrace trace) { |
12c155f5 FC |
323 | // Work variables |
324 | LttngEventType tmpType = null; | |
325 | String[] markerFieldsLabels = null; | |
326 | ||
327 | String newTracefileKey = null; | |
328 | Integer newMarkerKey = null; | |
329 | ||
330 | JniTracefile newTracefile = null; | |
331 | JniMarker newMarker = null; | |
332 | ||
333 | // First, obtain an iterator on TRACEFILES of owned by the TRACE | |
cbdacf03 | 334 | final Iterator<String> tracefileItr = trace.getTracefilesMap().keySet().iterator(); |
12c155f5 FC |
335 | |
336 | while (tracefileItr.hasNext()) { | |
337 | newTracefileKey = tracefileItr.next(); | |
338 | newTracefile = trace.getTracefilesMap().get(newTracefileKey); | |
339 | ||
340 | // From the TRACEFILE read, obtain its MARKER | |
cbdacf03 | 341 | final Iterator<Integer> markerItr = newTracefile.getTracefileMarkersMap().keySet().iterator(); |
12c155f5 FC |
342 | while (markerItr.hasNext()) { |
343 | newMarkerKey = markerItr.next(); | |
344 | newMarker = newTracefile.getTracefileMarkersMap().get(newMarkerKey); | |
345 | ||
346 | // From the MARKER we can obtain the MARKERFIELDS keys (i.e. | |
347 | // labels) | |
348 | markerFieldsLabels = newMarker.getMarkerFieldsHashMap().keySet() | |
349 | .toArray(new String[newMarker.getMarkerFieldsHashMap().size()]); | |
350 | ||
351 | tmpType = new LttngEventType(newTracefile.getTracefileName(), newTracefile.getCpuNumber(), | |
352 | newMarker.getName(), newMarkerKey.intValue(), markerFieldsLabels); | |
353 | ||
354 | // Add the type to the map/vector | |
355 | addEventTypeToMap(tmpType); | |
356 | } | |
357 | } | |
358 | } | |
359 | ||
360 | /* | |
361 | * Add a new type to the HashMap | |
362 | * | |
cbdacf03 FC |
363 | * As the hashmap use a key format that is a bit dangerous to use, we should |
364 | * always add using this function. | |
12c155f5 | 365 | */ |
cbdacf03 FC |
366 | private void addEventTypeToMap(final LttngEventType newEventType) { |
367 | final int newTypeKey = EventTypeKey.getEventTypeHash(newEventType); | |
12c155f5 FC |
368 | |
369 | this.traceTypes.put(newTypeKey, newEventType); | |
370 | this.traceTypeNames.add(newTypeKey); | |
371 | } | |
372 | ||
12c155f5 | 373 | /** |
cbdacf03 FC |
374 | * Return the latest saved location. Note : Modifying the returned location |
375 | * may result in buggy positionning! | |
12c155f5 FC |
376 | * |
377 | * @return The LttngLocation as it was after the last operation. | |
378 | * | |
5945cec9 | 379 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
12c155f5 FC |
380 | */ |
381 | @Override | |
382 | public synchronized ITmfLocation<?> getCurrentLocation() { | |
383 | return previousLocation; | |
384 | } | |
385 | ||
386 | /** | |
387 | * Position the trace to the event at the given location. | |
388 | * <p> | |
cbdacf03 FC |
389 | * NOTE : Seeking by location is very fast compare to seeking by position |
390 | * but is still slower than "ReadNext", avoid using it for small interval. | |
12c155f5 | 391 | * |
cbdacf03 FC |
392 | * @param location Location of the event in the trace. If no event available |
393 | * at this exact location, we will position ourself to the next | |
394 | * one. | |
12c155f5 FC |
395 | * |
396 | * @return The TmfContext that point to this event | |
397 | * | |
5945cec9 | 398 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 399 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
400 | */ |
401 | @Override | |
07671572 | 402 | public synchronized ITmfContext seekEvent(final ITmfLocation<?> location) { |
12c155f5 | 403 | |
cbdacf03 | 404 | if (PRINT_DEBUG) |
12c155f5 | 405 | System.out.println("seekLocation(location) location -> " + location); //$NON-NLS-1$ |
12c155f5 FC |
406 | |
407 | // If the location in context is null, create a new one | |
12c155f5 | 408 | if (location == null) { |
07671572 FC |
409 | LttngLocation curLocation = new LttngLocation(); |
410 | final ITmfContext context = seekEvent(curLocation.getOperationTime()); | |
2352aed9 | 411 | context.setRank(0); |
12c155f5 | 412 | return context; |
07671572 FC |
413 | } |
414 | ||
12c155f5 FC |
415 | // The only seek valid in LTTng is with the time, we call |
416 | // seekEvent(timestamp) | |
07671572 FC |
417 | LttngLocation curLocation = (LttngLocation) location; |
418 | final ITmfContext context = seekEvent(curLocation.getOperationTime()); | |
12c155f5 | 419 | |
655bf113 PT |
420 | // If the location is marked with the read next flag |
421 | // then it is pointing to the next event following the operation time | |
cbdacf03 | 422 | if (curLocation.isLastOperationReadNext()) |
c32744d6 | 423 | getNext(context); |
655bf113 | 424 | |
12c155f5 FC |
425 | return context; |
426 | } | |
427 | ||
428 | /** | |
429 | * Position the trace to the event at the given time. | |
430 | * <p> | |
cbdacf03 FC |
431 | * NOTE : Seeking by time is very fast compare to seeking by position but is |
432 | * still slower than "ReadNext", avoid using it for small interval. | |
12c155f5 | 433 | * |
cbdacf03 FC |
434 | * @param timestamp Time of the event in the trace. If no event available at |
435 | * this exact time, we will position ourself to the next one. | |
12c155f5 FC |
436 | * |
437 | * @return The TmfContext that point to this event | |
438 | * | |
5945cec9 | 439 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 440 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
441 | */ |
442 | @Override | |
cbdacf03 | 443 | public synchronized TmfContext seekEvent(final ITmfTimestamp timestamp) { |
12c155f5 | 444 | |
cbdacf03 | 445 | if (PRINT_DEBUG) |
12c155f5 | 446 | System.out.println("seekEvent(timestamp) timestamp -> " + timestamp); //$NON-NLS-1$ |
12c155f5 FC |
447 | |
448 | // Call JNI to seek | |
449 | currentJniTrace.seekToTime(new JniTime(timestamp.getValue())); | |
450 | ||
451 | // Save the time at which we seeked | |
452 | previousLocation.setOperationTime(timestamp.getValue()); | |
453 | // Set the operation marker as seek, to be able to detect we did "seek" | |
454 | // this event | |
455 | previousLocation.setLastOperationSeek(); | |
456 | ||
cbdacf03 | 457 | final LttngLocation curLocation = new LttngLocation(previousLocation); |
12c155f5 FC |
458 | |
459 | return new TmfContext(curLocation); | |
460 | } | |
461 | ||
462 | /** | |
463 | * Position the trace to the event at the given position (rank). | |
464 | * <p> | |
cbdacf03 FC |
465 | * NOTE : Seeking by position is very slow in LTTng, consider seeking by |
466 | * timestamp. | |
12c155f5 | 467 | * |
cbdacf03 | 468 | * @param rank Position (or rank) of the event in the trace, starting at 0. |
12c155f5 FC |
469 | * |
470 | * @return The TmfContext that point to this event | |
471 | * | |
5945cec9 | 472 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 473 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
474 | */ |
475 | @Override | |
cbdacf03 | 476 | public synchronized TmfContext seekEvent(final long rank) { |
12c155f5 | 477 | |
cbdacf03 FC |
478 | if (PRINT_DEBUG) |
479 | System.out.println("seekEvent(rank) rank -> " + rank); //$NON-NLS-1$ | |
12c155f5 | 480 | |
d337369a | 481 | // Position the trace at the checkpoint |
0316808c | 482 | final ITmfContext checkpointContext = getIndexer().seekIndex(rank); |
d337369a FC |
483 | LttngLocation location = (LttngLocation) checkpointContext.getLocation(); |
484 | ITmfTimestamp timestamp = location.getLocation(); | |
20658947 | 485 | long index = rank / getCacheSize(); |
12c155f5 | 486 | |
12c155f5 | 487 | // Seek to the found time |
cbdacf03 | 488 | final TmfContext tmpContext = seekEvent(timestamp); |
0316808c | 489 | tmpContext.setRank((index + 1) * getCacheSize()); |
12c155f5 FC |
490 | previousLocation = (LttngLocation) tmpContext.getLocation(); |
491 | ||
492 | // Ajust the index of the event we found at this check point position | |
20658947 | 493 | Long currentPosition = index * getCacheSize(); |
12c155f5 FC |
494 | |
495 | Long lastTimeValueRead = 0L; | |
496 | ||
497 | // Get the event at current position. This won't move to the next one | |
498 | JniEvent tmpJniEvent = currentJniTrace.findNextEvent(); | |
499 | // Now that we are positionned at the checkpoint, | |
500 | // we need to "readNext" (Position - CheckpointPosition) times or until | |
501 | // trace "run out" | |
cbdacf03 | 502 | while ((tmpJniEvent != null) && (currentPosition < rank)) { |
12c155f5 FC |
503 | tmpJniEvent = currentJniTrace.readNextEvent(); |
504 | currentPosition++; | |
505 | } | |
506 | ||
507 | // If we found our event, save its timestamp | |
cbdacf03 | 508 | if (tmpJniEvent != null) |
12c155f5 | 509 | lastTimeValueRead = tmpJniEvent.getEventTime().getTime(); |
12c155f5 FC |
510 | |
511 | // Set the operation marker as seek, to be able to detect we did "seek" | |
512 | // this event | |
513 | previousLocation.setLastOperationSeek(); | |
514 | // Save read event time | |
515 | previousLocation.setOperationTime(lastTimeValueRead); | |
516 | ||
517 | // *** VERIFY *** | |
518 | // Is that too paranoid? | |
519 | // | |
520 | // We don't trust what upper level could do with our internal location | |
521 | // so we create a new one to return instead | |
cbdacf03 | 522 | final LttngLocation curLocation = new LttngLocation(previousLocation); |
12c155f5 | 523 | |
cbdacf03 | 524 | return new TmfContext(curLocation, rank); |
12c155f5 FC |
525 | } |
526 | ||
527 | @Override | |
7e6347b0 | 528 | public TmfContext seekEvent(final double ratio) { |
12c155f5 FC |
529 | // TODO Auto-generated method stub |
530 | return null; | |
531 | } | |
532 | ||
533 | @Override | |
cbdacf03 | 534 | public double getLocationRatio(final ITmfLocation<?> location) { |
12c155f5 FC |
535 | // TODO Auto-generated method stub |
536 | return 0; | |
537 | } | |
538 | ||
539 | /** | |
cbdacf03 FC |
540 | * Return the event in the trace according to the given context. Read it if |
541 | * necessary. | |
12c155f5 | 542 | * <p> |
cbdacf03 FC |
543 | * Similar (same?) as ParseEvent except that calling GetNext twice read the |
544 | * next one the second time. | |
12c155f5 | 545 | * |
cbdacf03 | 546 | * @param context Current TmfContext where to get the event |
12c155f5 FC |
547 | * |
548 | * @return The LttngEvent we read of null if no event are available | |
549 | * | |
5945cec9 | 550 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 551 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
552 | */ |
553 | ||
554 | public int nbEventsRead = 0; | |
555 | ||
556 | @Override | |
c32744d6 | 557 | public synchronized LttngEvent getNext(final ITmfContext context) { |
12c155f5 | 558 | |
cbdacf03 | 559 | if (PRINT_DEBUG) |
12c155f5 FC |
560 | System.out.println("getNextEvent(context) context.getLocation() -> " //$NON-NLS-1$ |
561 | + context.getLocation()); | |
12c155f5 FC |
562 | |
563 | LttngEvent returnedEvent = null; | |
564 | LttngLocation curLocation = null; | |
565 | ||
566 | curLocation = (LttngLocation) context.getLocation(); | |
567 | // If the location in context is null, create a new one | |
cbdacf03 | 568 | if (curLocation == null) |
12c155f5 | 569 | curLocation = getCurrentLocation(context); |
12c155f5 | 570 | |
12c155f5 FC |
571 | // *** Positioning trick : |
572 | // GetNextEvent only read the trace if : | |
573 | // 1- The last operation was NOT a ParseEvent --> A read is required | |
574 | // OR | |
575 | // 2- The time of the previous location is different from the current | |
576 | // one --> A seek + a read is required | |
577 | if ((!(curLocation.isLastOperationParse())) | |
578 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
579 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
cbdacf03 | 580 | if (PRINT_DEBUG) |
12c155f5 FC |
581 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ |
582 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
583 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
12c155f5 FC |
584 | seekEvent(curLocation.getOperationTime()); |
585 | } | |
586 | // Read the next event from the trace. The last one will NO LONGER | |
587 | // BE VALID. | |
588 | returnedEvent = readNextEvent(curLocation); | |
589 | ||
590 | } else { | |
591 | // No event was read, just return the one currently loaded (the last | |
592 | // one we read) | |
593 | returnedEvent = currentLttngEvent; | |
594 | ||
61d428bd PT |
595 | // Set the operation marker as read to both locations, to be able to |
596 | // detect we need to read the next event | |
597 | previousLocation.setLastOperationReadNext(); | |
598 | curLocation.setLastOperationReadNext(); | |
12c155f5 FC |
599 | } |
600 | ||
601 | // If we read an event, set it's time to the locations (both previous | |
602 | // and current) | |
cbdacf03 | 603 | if (returnedEvent != null) |
12c155f5 | 604 | setPreviousAndCurrentTimes(context, returnedEvent, curLocation); |
12c155f5 FC |
605 | |
606 | return returnedEvent; | |
607 | } | |
608 | ||
609 | // this method was extracted for profiling purposes | |
cbdacf03 FC |
610 | private synchronized void setPreviousAndCurrentTimes(final ITmfContext context, final LttngEvent returnedEvent, |
611 | final LttngLocation curLocation) { | |
12c155f5 | 612 | |
cbdacf03 | 613 | final ITmfTimestamp eventTimestamp = returnedEvent.getTimestamp(); |
12c155f5 FC |
614 | // long eventTime = eventTimestamp.getValue(); |
615 | previousLocation.setOperationTime(eventTimestamp.getValue()); | |
616 | curLocation.setOperationTime(eventTimestamp.getValue()); | |
d337369a | 617 | updateAttributes(context, eventTimestamp); |
cbdacf03 | 618 | context.increaseRank(); |
12c155f5 FC |
619 | } |
620 | ||
12c155f5 | 621 | // this method was extracted for profiling purposes |
cbdacf03 | 622 | private synchronized LttngEvent readNextEvent(final LttngLocation curLocation) { |
12c155f5 FC |
623 | LttngEvent returnedEvent; |
624 | // Read the next event from the trace. The last one will NO LONGER BE | |
625 | // VALID. | |
626 | returnedEvent = readEvent(curLocation); | |
627 | nbEventsRead++; | |
628 | ||
61d428bd PT |
629 | // Set the operation marker as read to both locations, to be able to |
630 | // detect we need to read the next event | |
12c155f5 FC |
631 | previousLocation.setLastOperationReadNext(); |
632 | curLocation.setLastOperationReadNext(); | |
633 | return returnedEvent; | |
634 | } | |
635 | ||
636 | // this method was extracted for profiling purposes | |
cbdacf03 | 637 | private LttngLocation getCurrentLocation(final ITmfContext context) { |
12c155f5 FC |
638 | LttngLocation curLocation; |
639 | curLocation = new LttngLocation(); | |
640 | context.setLocation(curLocation); | |
641 | return curLocation; | |
642 | } | |
643 | ||
644 | /** | |
cbdacf03 FC |
645 | * Return the event in the trace according to the given context. Read it if |
646 | * necessary. | |
12c155f5 | 647 | * <p> |
cbdacf03 FC |
648 | * Similar (same?) as GetNextEvent except that calling ParseEvent twice will |
649 | * return the same event | |
12c155f5 | 650 | * |
cbdacf03 | 651 | * @param context Current TmfContext where to get the event |
12c155f5 FC |
652 | * |
653 | * @return The LttngEvent we read of null if no event are available | |
654 | * | |
5945cec9 | 655 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 656 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
657 | */ |
658 | @Override | |
cbdacf03 | 659 | public synchronized LttngEvent parseEvent(final ITmfContext context) { |
12c155f5 | 660 | |
cbdacf03 | 661 | if (PRINT_DEBUG) |
12c155f5 FC |
662 | System.out.println("parseEvent(context) context.getLocation() -> " //$NON-NLS-1$ |
663 | + context.getLocation()); | |
12c155f5 FC |
664 | |
665 | LttngEvent returnedEvent = null; | |
666 | LttngLocation curLocation = null; | |
667 | ||
668 | // If the location in context is null, create a new one | |
669 | if (context.getLocation() == null) { | |
670 | curLocation = new LttngLocation(); | |
671 | context.setLocation(curLocation); | |
cbdacf03 | 672 | } else |
12c155f5 | 673 | curLocation = (LttngLocation) context.getLocation(); |
12c155f5 FC |
674 | |
675 | // *** HACK *** | |
676 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
677 | // once ParseEvent() is called | |
678 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
679 | // event. | |
680 | // So, before "Parsing" an event, we have to make sure we didn't "Read" | |
681 | // it alreafy. | |
682 | // Also, "Reading" invalidate the previous Event in LTTNG and seek back | |
683 | // is very costly, | |
684 | // so calling twice "Parse" will return the same event, giving a way to | |
685 | // get the "Currently loaded" event | |
686 | ||
687 | // *** Positionning trick : | |
688 | // ParseEvent only read the trace if : | |
61d428bd | 689 | // 1- The last operation was NOT a ParseEvent --> A read is required |
12c155f5 FC |
690 | // OR |
691 | // 2- The time of the previous location is different from the current | |
692 | // one --> A seek + a read is required | |
61d428bd | 693 | if (!curLocation.isLastOperationParse() |
12c155f5 FC |
694 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { |
695 | // Previous time != Current time : We need to reposition to the | |
696 | // current time | |
697 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
cbdacf03 | 698 | if (PRINT_DEBUG) |
12c155f5 FC |
699 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ |
700 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
701 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
12c155f5 FC |
702 | seekEvent(curLocation.getOperationTime()); |
703 | } | |
704 | ||
705 | // Read the next event from the trace. The last one will NO LONGER | |
706 | // BE VALID. | |
707 | returnedEvent = readEvent(curLocation); | |
cbdacf03 | 708 | } else |
12c155f5 FC |
709 | // No event was read, just return the one currently loaded (the last |
710 | // one we read) | |
711 | returnedEvent = currentLttngEvent; | |
12c155f5 FC |
712 | |
713 | // If we read an event, set it's time to the locations (both previous | |
714 | // and current) | |
715 | if (returnedEvent != null) { | |
716 | previousLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
717 | curLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
718 | } | |
719 | ||
720 | // Set the operation marker as parse to both location, to be able to | |
721 | // detect we already "read" this event | |
722 | previousLocation.setLastOperationParse(); | |
723 | curLocation.setLastOperationParse(); | |
724 | ||
725 | return returnedEvent; | |
726 | } | |
727 | ||
728 | /* | |
729 | * Read the next event from the JNI and convert it as Lttng Event<p> | |
730 | * | |
cbdacf03 FC |
731 | * @param location Current LttngLocation that to be updated with the event |
732 | * timestamp | |
12c155f5 FC |
733 | * |
734 | * @return The LttngEvent we read of null if no event are available | |
735 | * | |
736 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
737 | * | |
738 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
739 | */ | |
cbdacf03 | 740 | private synchronized LttngEvent readEvent(final LttngLocation location) { |
12c155f5 FC |
741 | LttngEvent returnedEvent = null; |
742 | JniEvent tmpEvent = null; | |
743 | ||
744 | // Read the next event from JNI. THIS WILL INVALIDATE THE CURRENT LTTNG | |
745 | // EVENT. | |
746 | tmpEvent = currentJniTrace.readNextEvent(); | |
747 | ||
748 | if (tmpEvent != null) { | |
749 | // *** NOTE | |
750 | // Convert will update the currentLttngEvent | |
751 | returnedEvent = convertJniEventToTmf(tmpEvent); | |
752 | ||
753 | location.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
cbdacf03 | 754 | } else |
12c155f5 | 755 | location.setOperationTime(getEndTime().getValue() + 1); |
12c155f5 FC |
756 | |
757 | return returnedEvent; | |
758 | } | |
759 | ||
760 | /** | |
761 | * Method to convert a JniEvent into a LttngEvent. | |
762 | * <p> | |
763 | * | |
cbdacf03 FC |
764 | * Note : This method will call LttngEvent convertEventJniToTmf(JniEvent, |
765 | * boolean) with a default value for isParsingNeeded | |
12c155f5 | 766 | * |
cbdacf03 | 767 | * @param newEvent The JniEvent to convert into LttngEvent |
12c155f5 FC |
768 | * |
769 | * @return The converted LttngEvent | |
770 | * | |
771 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
5945cec9 | 772 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent |
12c155f5 | 773 | */ |
cbdacf03 | 774 | public synchronized LttngEvent convertJniEventToTmf(final JniEvent newEvent) { |
12c155f5 FC |
775 | currentLttngEvent = convertJniEventToTmf(newEvent, IS_PARSING_NEEDED_DEFAULT); |
776 | ||
777 | return currentLttngEvent; | |
778 | } | |
779 | ||
780 | /** | |
781 | * Method to convert a JniEvent into a LttngEvent | |
782 | * | |
cbdacf03 FC |
783 | * @param jniEvent The JniEvent to convert into LttngEvent |
784 | * @param isParsingNeeded A boolean value telling if the event should be | |
785 | * parsed or not. | |
12c155f5 FC |
786 | * |
787 | * @return The converted LttngEvent | |
788 | * | |
789 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
5945cec9 | 790 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent |
12c155f5 | 791 | */ |
cbdacf03 | 792 | public synchronized LttngEvent convertJniEventToTmf(final JniEvent jniEvent, final boolean isParsingNeeded) { |
12c155f5 | 793 | |
212550ba | 794 | if (UNIQUE_EVENT) { |
12c155f5 FC |
795 | |
796 | // *** | |
797 | // UNHACKED : We can no longer do that because TCF need to maintain | |
798 | // several events at once. | |
799 | // This is very slow to do so in LTTng, this has to be temporary. | |
800 | // *** HACK *** | |
801 | // To save time here, we only set value instead of allocating new | |
802 | // object | |
803 | // This give an HUGE performance improvement | |
804 | // all allocation done in the LttngTrace constructor | |
805 | // *** | |
806 | eventTimestamp.setValue(jniEvent.getEventTime().getTime()); | |
99005796 | 807 | eventSource = jniEvent.requestEventSource(); |
12c155f5 FC |
808 | |
809 | eventType = traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent)); | |
810 | ||
cbdacf03 FC |
811 | final String fullTracePath = getName(); |
812 | final String reference = fullTracePath.substring(fullTracePath.lastIndexOf('/') + 1); | |
4641c2f7 | 813 | currentLttngEvent.setReference(reference); |
12c155f5 FC |
814 | |
815 | eventContent.emptyContent(); | |
816 | ||
817 | currentLttngEvent.setType(eventType); | |
818 | // Save the jni reference | |
819 | currentLttngEvent.updateJniEventReference(jniEvent); | |
820 | ||
821 | // Parse now if was asked | |
822 | // Warning : THIS IS SLOW | |
cbdacf03 | 823 | if (isParsingNeeded) |
12c155f5 | 824 | eventContent.getFields(); |
12c155f5 FC |
825 | |
826 | return currentLttngEvent; | |
cbdacf03 | 827 | } else |
12c155f5 | 828 | return convertJniEventToTmfMultipleEventEvilFix(jniEvent, isParsingNeeded); |
12c155f5 FC |
829 | |
830 | } | |
831 | ||
832 | /** | |
cbdacf03 FC |
833 | * This method is a temporary fix to support multiple events at once in TMF |
834 | * This is expected to be slow and should be fixed in another way. See | |
835 | * comment in convertJniEventToTmf(); | |
12c155f5 | 836 | * |
cbdacf03 | 837 | * @param jniEvent The current JNI Event |
12c155f5 FC |
838 | * @return Current Lttng Event fully parsed |
839 | */ | |
cbdacf03 FC |
840 | private synchronized LttngEvent convertJniEventToTmfMultipleEventEvilFix(final JniEvent jniEvent, |
841 | final boolean isParsingNeeded) { | |
12c155f5 FC |
842 | // *** HACK *** |
843 | // Below : the "fix" with all the new and the full-parse | |
844 | // Allocating new memory is slow. | |
845 | // Parsing every events is very slow. | |
846 | eventTimestamp = new LttngTimestamp(jniEvent.getEventTime().getTime()); | |
99005796 | 847 | eventSource = jniEvent.requestEventSource(); |
4641c2f7 | 848 | eventReference = getName(); |
12c155f5 FC |
849 | eventType = new LttngEventType(traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent))); |
850 | eventContent = new LttngEventContent(currentLttngEvent); | |
851 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, | |
852 | null); | |
853 | ||
854 | // The jni reference is no longer reliable but we will keep it anyhow | |
855 | currentLttngEvent.updateJniEventReference(jniEvent); | |
856 | // Ensure that the content is correctly set | |
857 | eventContent.setEvent(currentLttngEvent); | |
858 | ||
859 | // Parse the event if it was needed | |
860 | // *** WARNING *** | |
861 | // ONLY for testing, NOT parsing events with non-unique events WILL | |
862 | // result in segfault in the JVM | |
cbdacf03 | 863 | if (isParsingNeeded) |
12c155f5 | 864 | eventContent.getFields(); |
12c155f5 FC |
865 | |
866 | return currentLttngEvent; | |
867 | } | |
868 | ||
869 | /** | |
870 | * Reference to the current LttngTrace we are reading from. | |
871 | * <p> | |
872 | * | |
cbdacf03 FC |
873 | * Note : This bypass the framework and should not be use, except for |
874 | * testing! | |
12c155f5 FC |
875 | * |
876 | * @return Reference to the current LttngTrace | |
877 | * | |
878 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
879 | */ | |
880 | public JniTrace getCurrentJniTrace() { | |
881 | return currentJniTrace; | |
882 | } | |
883 | ||
884 | /** | |
885 | * Return a reference to the current LttngEvent we have in memory. | |
886 | * | |
887 | * @return The current (last read) LttngEvent | |
888 | * | |
5945cec9 | 889 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent |
12c155f5 FC |
890 | */ |
891 | public synchronized LttngEvent getCurrentEvent() { | |
892 | return currentLttngEvent; | |
893 | } | |
894 | ||
895 | /** | |
896 | * Get the major version number for the current trace | |
897 | * | |
898 | * @return Version major or -1 if unknown | |
899 | * | |
900 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
901 | * | |
902 | */ | |
903 | public short getVersionMajor() { | |
cbdacf03 | 904 | if (currentJniTrace != null) |
12c155f5 | 905 | return currentJniTrace.getLttMajorVersion(); |
cbdacf03 | 906 | else |
12c155f5 | 907 | return -1; |
12c155f5 FC |
908 | } |
909 | ||
910 | /** | |
911 | * Get the minor version number for the current trace | |
912 | * | |
913 | * @return Version minor or -1 if unknown | |
914 | * | |
915 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
916 | * | |
917 | */ | |
918 | public short getVersionMinor() { | |
cbdacf03 | 919 | if (currentJniTrace != null) |
12c155f5 | 920 | return currentJniTrace.getLttMinorVersion(); |
cbdacf03 | 921 | else |
12c155f5 | 922 | return -1; |
12c155f5 FC |
923 | } |
924 | ||
925 | /** | |
926 | * Get the number of CPU for this trace | |
927 | * | |
928 | * @return Number of CPU or -1 if unknown | |
929 | * | |
930 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
931 | * | |
932 | */ | |
933 | public int getCpuNumber() { | |
cbdacf03 | 934 | if (currentJniTrace != null) |
12c155f5 | 935 | return currentJniTrace.getCpuNumber(); |
cbdacf03 | 936 | else |
12c155f5 | 937 | return -1; |
12c155f5 FC |
938 | } |
939 | ||
12c155f5 FC |
940 | @Override |
941 | public synchronized void dispose() { | |
942 | if (currentJniTrace != null) | |
943 | currentJniTrace.closeTrace(); | |
944 | super.dispose(); | |
945 | } | |
946 | ||
947 | /** | |
948 | * Return a String identifying this trace. | |
949 | * | |
950 | * @return String that identify this trace | |
951 | */ | |
952 | @Override | |
3b38ea61 | 953 | @SuppressWarnings("nls") |
12c155f5 FC |
954 | public String toString() { |
955 | String returnedData = ""; | |
64fe8e8a | 956 | |
12c155f5 FC |
957 | returnedData += "Path :" + getPath() + " "; |
958 | returnedData += "Trace:" + currentJniTrace + " "; | |
959 | returnedData += "Event:" + currentLttngEvent; | |
64fe8e8a | 960 | |
12c155f5 FC |
961 | return returnedData; |
962 | } | |
cb866e08 | 963 | |
28b94d61 FC |
964 | } |
965 | ||
966 | /* | |
967 | * EventTypeKey inner class | |
968 | * | |
cbdacf03 FC |
969 | * This class is used to make the process of generating the HashMap key more |
970 | * transparent and so less error prone to use | |
28b94d61 | 971 | */ |
64fe8e8a | 972 | final class EventTypeKey { |
cbdacf03 | 973 | |
12c155f5 FC |
974 | // *** WARNING *** |
975 | // These two getEventTypeKey() functions should ALWAYS construct the key the | |
976 | // same ways! | |
977 | // Otherwise, every type search will fail! | |
64fe8e8a | 978 | |
12c155f5 FC |
979 | // added final to encourage inlining. |
980 | ||
981 | // generating a hash code by hand to avoid a string creation | |
cbdacf03 | 982 | final static public int getEventTypeHash(final LttngEventType newEventType) { |
12c155f5 FC |
983 | return generateHash(newEventType.getTracefileName(), newEventType.getCpuId(), newEventType.getMarkerName()); |
984 | } | |
985 | ||
cbdacf03 | 986 | final private static int generateHash(final String traceFileName, final long cpuNumber, final String markerName) { |
12c155f5 FC |
987 | // 0x1337 is a prime number. The number of CPUs is always under 8192 on |
988 | // the current kernel, so this will work with the current linux kernel. | |
cbdacf03 | 989 | final int cpuHash = (int) (cpuNumber * (0x1337)); |
12c155f5 FC |
990 | return traceFileName.hashCode() ^ (cpuHash) ^ markerName.hashCode(); |
991 | } | |
992 | ||
993 | // generating a hash code by hand to avoid a string creation | |
cbdacf03 | 994 | final static public int getEventTypeHash(final JniEvent newEvent) { |
12c155f5 FC |
995 | return generateHash(newEvent.getParentTracefile().getTracefileName(), newEvent.getParentTracefile() |
996 | .getCpuNumber(), newEvent.requestEventMarker().getName()); | |
997 | } | |
64fe8e8a | 998 | |
a3767fd9 | 999 | } |