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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 { |
527225f5 FC |
131 | IProject project = resource.getProject(); |
132 | traceLibPath = (project != null) ? TraceHelper.getTraceLibDirFromProject(project) : null; | |
12c155f5 | 133 | currentJniTrace = JniTraceFactory.getJniTrace(path, traceLibPath, SHOW_LTT_DEBUG_DEFAULT); |
cbdacf03 | 134 | } catch (final Exception e) { |
b4f71e4a | 135 | throw new TmfTraceException(e.getMessage()); |
12c155f5 FC |
136 | } |
137 | ||
138 | // Export all the event types from the JNI side | |
139 | traceTypes = new HashMap<Integer, LttngEventType>(); | |
140 | traceTypeNames = new Vector<Integer>(); | |
141 | initialiseEventTypes(currentJniTrace); | |
142 | ||
00641a97 | 143 | // Build the re-used event structure |
12c155f5 | 144 | eventTimestamp = new LttngTimestamp(); |
4641c2f7 | 145 | eventSource = ""; //$NON-NLS-1$ |
12c155f5 FC |
146 | this.eventType = new LttngEventType(); |
147 | eventContent = new LttngEventContent(currentLttngEvent); | |
4641c2f7 | 148 | eventReference = getName(); |
12c155f5 FC |
149 | |
150 | // Create the skeleton event | |
151 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, this.eventType, eventContent, | |
152 | eventReference, null); | |
153 | ||
154 | // Create a new current location | |
155 | previousLocation = new LttngLocation(); | |
156 | ||
157 | // Set the currentEvent to the eventContent | |
158 | eventContent.setEvent(currentLttngEvent); | |
159 | ||
0316808c FC |
160 | setParser((ITmfEventParser<LttngEvent>) this); |
161 | setCacheSize(CHECKPOINT_PAGE_SIZE); | |
b4f71e4a | 162 | |
1b70b6dc PT |
163 | initializeStreamingMonitor(); |
164 | } | |
165 | ||
166 | private void initializeStreamingMonitor() { | |
cbdacf03 FC |
167 | final JniTrace jniTrace = getCurrentJniTrace(); |
168 | if (jniTrace == null | |
169 | || (!jniTrace.isLiveTraceSupported() || !LiveTraceManager.isLiveTrace(jniTrace.getTracepath()))) { | |
1b70b6dc | 170 | // Set the time range of the trace |
07671572 | 171 | final ITmfContext context = seekEvent(0); |
c32744d6 | 172 | final LttngEvent event = getNext(context); |
cbdacf03 FC |
173 | final LttngTimestamp startTime = new LttngTimestamp(event.getTimestamp()); |
174 | final LttngTimestamp endTime = new LttngTimestamp(currentJniTrace.getEndTime().getTime()); | |
1b70b6dc | 175 | setTimeRange(new TmfTimeRange(startTime, endTime)); |
cbdacf03 | 176 | final TmfTraceUpdatedSignal signal = new TmfTraceUpdatedSignal(this, this, getTimeRange()); |
1b70b6dc PT |
177 | broadcast(signal); |
178 | return; | |
179 | } | |
180 | ||
12c155f5 | 181 | // Set the time range of the trace |
07671572 | 182 | final ITmfContext context = seekEvent(0); |
c32744d6 | 183 | final LttngEvent event = getNext(context); |
a4115405 FC |
184 | setEndTime(TmfTimestamp.BIG_BANG); |
185 | final long startTime = event != null ? event.getTimestamp().getValue() : TmfTimestamp.BIG_BANG.getValue(); | |
0316808c | 186 | setStreamingInterval(LTTNG_STREAMING_INTERVAL); |
1b70b6dc PT |
187 | |
188 | final Thread thread = new Thread("Streaming Monitor for trace " + getName()) { //$NON-NLS-1$ | |
cbdacf03 | 189 | |
1b70b6dc PT |
190 | LttngTimestamp safeTimestamp = null; |
191 | TmfTimeRange timeRange = null; | |
192 | ||
8fd82db5 | 193 | @SuppressWarnings({ "unchecked", "restriction" }) |
1b70b6dc PT |
194 | @Override |
195 | public void run() { | |
196 | while (!fExecutor.isShutdown()) { | |
cbdacf03 | 197 | final TmfExperiment<?> experiment = TmfExperiment.getCurrentExperiment(); |
1b70b6dc | 198 | if (experiment != null) { |
f4c52cea | 199 | @SuppressWarnings("rawtypes") |
cbdacf03 FC |
200 | final TmfEventRequest request = new TmfEventRequest<TmfEvent>(TmfEvent.class, |
201 | TmfTimeRange.ETERNITY, 0, ExecutionType.FOREGROUND) { | |
202 | ||
1b70b6dc PT |
203 | @Override |
204 | public void handleCompleted() { | |
205 | updateJniTrace(); | |
206 | } | |
207 | }; | |
208 | synchronized (experiment) { | |
209 | experiment.sendRequest(request); | |
210 | } | |
211 | try { | |
212 | request.waitForCompletion(); | |
cbdacf03 | 213 | } catch (final InterruptedException e) { |
1b70b6dc | 214 | } |
cbdacf03 | 215 | } else |
1b70b6dc | 216 | updateJniTrace(); |
1b70b6dc PT |
217 | try { |
218 | Thread.sleep(LTTNG_STREAMING_INTERVAL); | |
cbdacf03 | 219 | } catch (final InterruptedException e) { |
1b70b6dc PT |
220 | } |
221 | } | |
222 | } | |
cbdacf03 | 223 | |
1b70b6dc | 224 | private void updateJniTrace() { |
cbdacf03 | 225 | final JniTrace jniTrace = getCurrentJniTrace(); |
1b70b6dc | 226 | currentJniTrace.updateTrace(); |
cbdacf03 FC |
227 | final long endTime = jniTrace.getEndTime().getTime(); |
228 | final LttngTimestamp startTimestamp = new LttngTimestamp(startTime); | |
229 | final LttngTimestamp endTimestamp = new LttngTimestamp(endTime); | |
230 | if (safeTimestamp != null && safeTimestamp.compareTo(getTimeRange().getEndTime(), false) > 0) | |
1b70b6dc | 231 | timeRange = new TmfTimeRange(startTimestamp, safeTimestamp); |
cbdacf03 | 232 | else |
1b70b6dc | 233 | timeRange = null; |
1b70b6dc | 234 | safeTimestamp = endTimestamp; |
cbdacf03 | 235 | if (timeRange != null) |
1b70b6dc | 236 | setTimeRange(timeRange); |
1b70b6dc PT |
237 | } |
238 | }; | |
239 | thread.start(); | |
240 | } | |
c5b45b39 | 241 | |
12c155f5 FC |
242 | /** |
243 | * Default Constructor. | |
244 | * <p> | |
12c155f5 | 245 | * |
cbdacf03 FC |
246 | * @param name Name of the trace |
247 | * @param path Path to a <b>directory</b> that contain an LTTng trace. | |
248 | * | |
249 | * @exception Exception (most likely LTTngTraceException or | |
250 | * FileNotFoundException) | |
12c155f5 | 251 | */ |
25e48683 | 252 | public LTTngTrace(final IResource resource, final String path) throws Exception { |
12c155f5 | 253 | // Call with "wait for completion" true and "skip indexing" false |
25e48683 | 254 | this(resource, path, null, true, false); |
12c155f5 FC |
255 | } |
256 | ||
257 | /** | |
258 | * Constructor, with control over the indexing. | |
259 | * <p> | |
260 | * | |
cbdacf03 FC |
261 | * @param name Name of the trace |
262 | * @param path Path to a <b>directory</b> that contain an LTTng trace. | |
263 | * @param waitForCompletion Should we wait for indexign to complete before | |
264 | * moving on. | |
12c155f5 | 265 | * |
cbdacf03 FC |
266 | * @exception Exception (most likely LTTngTraceException or |
267 | * FileNotFoundException) | |
12c155f5 | 268 | */ |
25e48683 | 269 | public LTTngTrace(final IResource resource, final String path, final boolean waitForCompletion) throws Exception { |
12c155f5 | 270 | // Call with "skip indexing" false |
25e48683 | 271 | this(resource, path, null, waitForCompletion, true); |
12c155f5 FC |
272 | } |
273 | ||
274 | /** | |
cbdacf03 FC |
275 | * Default constructor, with control over the indexing and possibility to |
276 | * bypass indexation | |
12c155f5 FC |
277 | * <p> |
278 | * | |
cbdacf03 FC |
279 | * @param name Name of the trace |
280 | * @param path Path to a <b>directory</b> that contain an LTTng trace. | |
281 | * @param traceLibPath Path to a <b>directory</b> that contains LTTng trace | |
282 | * libraries. | |
283 | * @param waitForCompletion Should we wait for indexign to complete before | |
284 | * moving on. | |
285 | * @param bypassIndexing Should we bypass indexing completly? This is should | |
286 | * only be useful for unit testing. | |
12c155f5 | 287 | * |
cbdacf03 FC |
288 | * @exception Exception (most likely LTTngTraceException or |
289 | * FileNotFoundException) | |
12c155f5 FC |
290 | * |
291 | */ | |
25e48683 | 292 | public LTTngTrace(final IResource resource, final String path, final String traceLibPath, final boolean waitForCompletion, |
cbdacf03 | 293 | final boolean bypassIndexing) |
f17b2f70 | 294 | throws Exception { |
09e86496 FC |
295 | // super(resource, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE, false); |
296 | super(resource, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE); | |
297 | initialize(resource, path, LttngEvent.class); | |
20658947 FC |
298 | // if (!bypassIndexing) |
299 | // indexTrace(false); | |
12c155f5 | 300 | this.traceLibPath = traceLibPath; |
12c155f5 FC |
301 | } |
302 | ||
303 | /* | |
304 | * Copy constructor is forbidden for LttngEvenmStream | |
305 | */ | |
cbdacf03 | 306 | public LTTngTrace(final LTTngTrace other) throws Exception { |
25e48683 | 307 | this(other.getResource(), other.getPath(), other.getTraceLibPath(), false, true); |
00641a97 | 308 | setTimeRange(new TmfTimeRange(new LttngTimestamp(other.getStartTime()), new LttngTimestamp(other.getEndTime()))); |
12c155f5 FC |
309 | } |
310 | ||
12c155f5 FC |
311 | public String getTraceLibPath() { |
312 | return traceLibPath; | |
313 | } | |
314 | ||
315 | /* | |
316 | * Fill out the HashMap with "Type" (Tracefile/Marker) | |
317 | * | |
318 | * This should be called at construction once the trace is open | |
319 | */ | |
cbdacf03 | 320 | private void initialiseEventTypes(final JniTrace trace) { |
12c155f5 FC |
321 | // Work variables |
322 | LttngEventType tmpType = null; | |
323 | String[] markerFieldsLabels = null; | |
324 | ||
325 | String newTracefileKey = null; | |
326 | Integer newMarkerKey = null; | |
327 | ||
328 | JniTracefile newTracefile = null; | |
329 | JniMarker newMarker = null; | |
330 | ||
331 | // First, obtain an iterator on TRACEFILES of owned by the TRACE | |
cbdacf03 | 332 | final Iterator<String> tracefileItr = trace.getTracefilesMap().keySet().iterator(); |
12c155f5 FC |
333 | |
334 | while (tracefileItr.hasNext()) { | |
335 | newTracefileKey = tracefileItr.next(); | |
336 | newTracefile = trace.getTracefilesMap().get(newTracefileKey); | |
337 | ||
338 | // From the TRACEFILE read, obtain its MARKER | |
cbdacf03 | 339 | final Iterator<Integer> markerItr = newTracefile.getTracefileMarkersMap().keySet().iterator(); |
12c155f5 FC |
340 | while (markerItr.hasNext()) { |
341 | newMarkerKey = markerItr.next(); | |
342 | newMarker = newTracefile.getTracefileMarkersMap().get(newMarkerKey); | |
343 | ||
344 | // From the MARKER we can obtain the MARKERFIELDS keys (i.e. | |
345 | // labels) | |
346 | markerFieldsLabels = newMarker.getMarkerFieldsHashMap().keySet() | |
347 | .toArray(new String[newMarker.getMarkerFieldsHashMap().size()]); | |
348 | ||
349 | tmpType = new LttngEventType(newTracefile.getTracefileName(), newTracefile.getCpuNumber(), | |
350 | newMarker.getName(), newMarkerKey.intValue(), markerFieldsLabels); | |
351 | ||
352 | // Add the type to the map/vector | |
353 | addEventTypeToMap(tmpType); | |
354 | } | |
355 | } | |
356 | } | |
357 | ||
358 | /* | |
359 | * Add a new type to the HashMap | |
360 | * | |
cbdacf03 FC |
361 | * As the hashmap use a key format that is a bit dangerous to use, we should |
362 | * always add using this function. | |
12c155f5 | 363 | */ |
cbdacf03 FC |
364 | private void addEventTypeToMap(final LttngEventType newEventType) { |
365 | final int newTypeKey = EventTypeKey.getEventTypeHash(newEventType); | |
12c155f5 FC |
366 | |
367 | this.traceTypes.put(newTypeKey, newEventType); | |
368 | this.traceTypeNames.add(newTypeKey); | |
369 | } | |
370 | ||
12c155f5 | 371 | /** |
cbdacf03 FC |
372 | * Return the latest saved location. Note : Modifying the returned location |
373 | * may result in buggy positionning! | |
12c155f5 FC |
374 | * |
375 | * @return The LttngLocation as it was after the last operation. | |
376 | * | |
5945cec9 | 377 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
12c155f5 FC |
378 | */ |
379 | @Override | |
380 | public synchronized ITmfLocation<?> getCurrentLocation() { | |
381 | return previousLocation; | |
382 | } | |
383 | ||
384 | /** | |
385 | * Position the trace to the event at the given location. | |
386 | * <p> | |
cbdacf03 FC |
387 | * NOTE : Seeking by location is very fast compare to seeking by position |
388 | * but is still slower than "ReadNext", avoid using it for small interval. | |
12c155f5 | 389 | * |
cbdacf03 FC |
390 | * @param location Location of the event in the trace. If no event available |
391 | * at this exact location, we will position ourself to the next | |
392 | * one. | |
12c155f5 FC |
393 | * |
394 | * @return The TmfContext that point to this event | |
395 | * | |
5945cec9 | 396 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 397 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
398 | */ |
399 | @Override | |
07671572 | 400 | public synchronized ITmfContext seekEvent(final ITmfLocation<?> location) { |
12c155f5 | 401 | |
cbdacf03 | 402 | if (PRINT_DEBUG) |
12c155f5 | 403 | System.out.println("seekLocation(location) location -> " + location); //$NON-NLS-1$ |
12c155f5 FC |
404 | |
405 | // If the location in context is null, create a new one | |
12c155f5 | 406 | if (location == null) { |
07671572 FC |
407 | LttngLocation curLocation = new LttngLocation(); |
408 | final ITmfContext context = seekEvent(curLocation.getOperationTime()); | |
2352aed9 | 409 | context.setRank(0); |
12c155f5 | 410 | return context; |
07671572 FC |
411 | } |
412 | ||
12c155f5 FC |
413 | // The only seek valid in LTTng is with the time, we call |
414 | // seekEvent(timestamp) | |
07671572 FC |
415 | LttngLocation curLocation = (LttngLocation) location; |
416 | final ITmfContext context = seekEvent(curLocation.getOperationTime()); | |
12c155f5 | 417 | |
655bf113 PT |
418 | // If the location is marked with the read next flag |
419 | // then it is pointing to the next event following the operation time | |
cbdacf03 | 420 | if (curLocation.isLastOperationReadNext()) |
c32744d6 | 421 | getNext(context); |
655bf113 | 422 | |
12c155f5 FC |
423 | return context; |
424 | } | |
425 | ||
426 | /** | |
427 | * Position the trace to the event at the given time. | |
428 | * <p> | |
cbdacf03 FC |
429 | * NOTE : Seeking by time is very fast compare to seeking by position but is |
430 | * still slower than "ReadNext", avoid using it for small interval. | |
12c155f5 | 431 | * |
cbdacf03 FC |
432 | * @param timestamp Time of the event in the trace. If no event available at |
433 | * this exact time, we will position ourself to the next one. | |
12c155f5 FC |
434 | * |
435 | * @return The TmfContext that point to this event | |
436 | * | |
5945cec9 | 437 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 438 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
439 | */ |
440 | @Override | |
cbdacf03 | 441 | public synchronized TmfContext seekEvent(final ITmfTimestamp timestamp) { |
12c155f5 | 442 | |
cbdacf03 | 443 | if (PRINT_DEBUG) |
12c155f5 | 444 | System.out.println("seekEvent(timestamp) timestamp -> " + timestamp); //$NON-NLS-1$ |
12c155f5 FC |
445 | |
446 | // Call JNI to seek | |
447 | currentJniTrace.seekToTime(new JniTime(timestamp.getValue())); | |
448 | ||
449 | // Save the time at which we seeked | |
450 | previousLocation.setOperationTime(timestamp.getValue()); | |
451 | // Set the operation marker as seek, to be able to detect we did "seek" | |
452 | // this event | |
453 | previousLocation.setLastOperationSeek(); | |
454 | ||
cbdacf03 | 455 | final LttngLocation curLocation = new LttngLocation(previousLocation); |
12c155f5 FC |
456 | |
457 | return new TmfContext(curLocation); | |
458 | } | |
459 | ||
460 | /** | |
461 | * Position the trace to the event at the given position (rank). | |
462 | * <p> | |
cbdacf03 FC |
463 | * NOTE : Seeking by position is very slow in LTTng, consider seeking by |
464 | * timestamp. | |
12c155f5 | 465 | * |
cbdacf03 | 466 | * @param rank Position (or rank) of the event in the trace, starting at 0. |
12c155f5 FC |
467 | * |
468 | * @return The TmfContext that point to this event | |
469 | * | |
5945cec9 | 470 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 471 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
472 | */ |
473 | @Override | |
cbdacf03 | 474 | public synchronized TmfContext seekEvent(final long rank) { |
12c155f5 | 475 | |
cbdacf03 FC |
476 | if (PRINT_DEBUG) |
477 | System.out.println("seekEvent(rank) rank -> " + rank); //$NON-NLS-1$ | |
12c155f5 | 478 | |
d337369a | 479 | // Position the trace at the checkpoint |
0316808c | 480 | final ITmfContext checkpointContext = getIndexer().seekIndex(rank); |
d337369a FC |
481 | LttngLocation location = (LttngLocation) checkpointContext.getLocation(); |
482 | ITmfTimestamp timestamp = location.getLocation(); | |
20658947 | 483 | long index = rank / getCacheSize(); |
12c155f5 | 484 | |
12c155f5 | 485 | // Seek to the found time |
cbdacf03 | 486 | final TmfContext tmpContext = seekEvent(timestamp); |
0316808c | 487 | tmpContext.setRank((index + 1) * getCacheSize()); |
12c155f5 FC |
488 | previousLocation = (LttngLocation) tmpContext.getLocation(); |
489 | ||
490 | // Ajust the index of the event we found at this check point position | |
20658947 | 491 | Long currentPosition = index * getCacheSize(); |
12c155f5 FC |
492 | |
493 | Long lastTimeValueRead = 0L; | |
494 | ||
495 | // Get the event at current position. This won't move to the next one | |
496 | JniEvent tmpJniEvent = currentJniTrace.findNextEvent(); | |
497 | // Now that we are positionned at the checkpoint, | |
498 | // we need to "readNext" (Position - CheckpointPosition) times or until | |
499 | // trace "run out" | |
cbdacf03 | 500 | while ((tmpJniEvent != null) && (currentPosition < rank)) { |
12c155f5 FC |
501 | tmpJniEvent = currentJniTrace.readNextEvent(); |
502 | currentPosition++; | |
503 | } | |
504 | ||
505 | // If we found our event, save its timestamp | |
cbdacf03 | 506 | if (tmpJniEvent != null) |
12c155f5 | 507 | lastTimeValueRead = tmpJniEvent.getEventTime().getTime(); |
12c155f5 FC |
508 | |
509 | // Set the operation marker as seek, to be able to detect we did "seek" | |
510 | // this event | |
511 | previousLocation.setLastOperationSeek(); | |
512 | // Save read event time | |
513 | previousLocation.setOperationTime(lastTimeValueRead); | |
514 | ||
515 | // *** VERIFY *** | |
516 | // Is that too paranoid? | |
517 | // | |
518 | // We don't trust what upper level could do with our internal location | |
519 | // so we create a new one to return instead | |
cbdacf03 | 520 | final LttngLocation curLocation = new LttngLocation(previousLocation); |
12c155f5 | 521 | |
cbdacf03 | 522 | return new TmfContext(curLocation, rank); |
12c155f5 FC |
523 | } |
524 | ||
525 | @Override | |
7e6347b0 | 526 | public TmfContext seekEvent(final double ratio) { |
12c155f5 FC |
527 | // TODO Auto-generated method stub |
528 | return null; | |
529 | } | |
530 | ||
531 | @Override | |
cbdacf03 | 532 | public double getLocationRatio(final ITmfLocation<?> location) { |
12c155f5 FC |
533 | // TODO Auto-generated method stub |
534 | return 0; | |
535 | } | |
536 | ||
537 | /** | |
cbdacf03 FC |
538 | * Return the event in the trace according to the given context. Read it if |
539 | * necessary. | |
12c155f5 | 540 | * <p> |
cbdacf03 FC |
541 | * Similar (same?) as ParseEvent except that calling GetNext twice read the |
542 | * next one the second time. | |
12c155f5 | 543 | * |
cbdacf03 | 544 | * @param context Current TmfContext where to get the event |
12c155f5 FC |
545 | * |
546 | * @return The LttngEvent we read of null if no event are available | |
547 | * | |
5945cec9 | 548 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 549 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
550 | */ |
551 | ||
552 | public int nbEventsRead = 0; | |
553 | ||
554 | @Override | |
c32744d6 | 555 | public synchronized LttngEvent getNext(final ITmfContext context) { |
12c155f5 | 556 | |
cbdacf03 | 557 | if (PRINT_DEBUG) |
12c155f5 FC |
558 | System.out.println("getNextEvent(context) context.getLocation() -> " //$NON-NLS-1$ |
559 | + context.getLocation()); | |
12c155f5 FC |
560 | |
561 | LttngEvent returnedEvent = null; | |
562 | LttngLocation curLocation = null; | |
563 | ||
564 | curLocation = (LttngLocation) context.getLocation(); | |
565 | // If the location in context is null, create a new one | |
cbdacf03 | 566 | if (curLocation == null) |
12c155f5 | 567 | curLocation = getCurrentLocation(context); |
12c155f5 | 568 | |
12c155f5 FC |
569 | // *** Positioning trick : |
570 | // GetNextEvent only read the trace if : | |
571 | // 1- The last operation was NOT a ParseEvent --> A read is required | |
572 | // OR | |
573 | // 2- The time of the previous location is different from the current | |
574 | // one --> A seek + a read is required | |
575 | if ((!(curLocation.isLastOperationParse())) | |
576 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
577 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
cbdacf03 | 578 | if (PRINT_DEBUG) |
12c155f5 FC |
579 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ |
580 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
581 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
12c155f5 FC |
582 | seekEvent(curLocation.getOperationTime()); |
583 | } | |
584 | // Read the next event from the trace. The last one will NO LONGER | |
585 | // BE VALID. | |
586 | returnedEvent = readNextEvent(curLocation); | |
587 | ||
588 | } else { | |
589 | // No event was read, just return the one currently loaded (the last | |
590 | // one we read) | |
591 | returnedEvent = currentLttngEvent; | |
592 | ||
61d428bd PT |
593 | // Set the operation marker as read to both locations, to be able to |
594 | // detect we need to read the next event | |
595 | previousLocation.setLastOperationReadNext(); | |
596 | curLocation.setLastOperationReadNext(); | |
12c155f5 FC |
597 | } |
598 | ||
599 | // If we read an event, set it's time to the locations (both previous | |
600 | // and current) | |
cbdacf03 | 601 | if (returnedEvent != null) |
12c155f5 | 602 | setPreviousAndCurrentTimes(context, returnedEvent, curLocation); |
12c155f5 FC |
603 | |
604 | return returnedEvent; | |
605 | } | |
606 | ||
607 | // this method was extracted for profiling purposes | |
cbdacf03 FC |
608 | private synchronized void setPreviousAndCurrentTimes(final ITmfContext context, final LttngEvent returnedEvent, |
609 | final LttngLocation curLocation) { | |
12c155f5 | 610 | |
cbdacf03 | 611 | final ITmfTimestamp eventTimestamp = returnedEvent.getTimestamp(); |
12c155f5 FC |
612 | // long eventTime = eventTimestamp.getValue(); |
613 | previousLocation.setOperationTime(eventTimestamp.getValue()); | |
614 | curLocation.setOperationTime(eventTimestamp.getValue()); | |
d337369a | 615 | updateAttributes(context, eventTimestamp); |
cbdacf03 | 616 | context.increaseRank(); |
12c155f5 FC |
617 | } |
618 | ||
12c155f5 | 619 | // this method was extracted for profiling purposes |
cbdacf03 | 620 | private synchronized LttngEvent readNextEvent(final LttngLocation curLocation) { |
12c155f5 FC |
621 | LttngEvent returnedEvent; |
622 | // Read the next event from the trace. The last one will NO LONGER BE | |
623 | // VALID. | |
624 | returnedEvent = readEvent(curLocation); | |
625 | nbEventsRead++; | |
626 | ||
61d428bd PT |
627 | // Set the operation marker as read to both locations, to be able to |
628 | // detect we need to read the next event | |
12c155f5 FC |
629 | previousLocation.setLastOperationReadNext(); |
630 | curLocation.setLastOperationReadNext(); | |
631 | return returnedEvent; | |
632 | } | |
633 | ||
634 | // this method was extracted for profiling purposes | |
cbdacf03 | 635 | private LttngLocation getCurrentLocation(final ITmfContext context) { |
12c155f5 FC |
636 | LttngLocation curLocation; |
637 | curLocation = new LttngLocation(); | |
638 | context.setLocation(curLocation); | |
639 | return curLocation; | |
640 | } | |
641 | ||
642 | /** | |
cbdacf03 FC |
643 | * Return the event in the trace according to the given context. Read it if |
644 | * necessary. | |
12c155f5 | 645 | * <p> |
cbdacf03 FC |
646 | * Similar (same?) as GetNextEvent except that calling ParseEvent twice will |
647 | * return the same event | |
12c155f5 | 648 | * |
cbdacf03 | 649 | * @param context Current TmfContext where to get the event |
12c155f5 FC |
650 | * |
651 | * @return The LttngEvent we read of null if no event are available | |
652 | * | |
5945cec9 | 653 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation |
6c13869b | 654 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext |
12c155f5 FC |
655 | */ |
656 | @Override | |
cbdacf03 | 657 | public synchronized LttngEvent parseEvent(final ITmfContext context) { |
12c155f5 | 658 | |
cbdacf03 | 659 | if (PRINT_DEBUG) |
12c155f5 FC |
660 | System.out.println("parseEvent(context) context.getLocation() -> " //$NON-NLS-1$ |
661 | + context.getLocation()); | |
12c155f5 FC |
662 | |
663 | LttngEvent returnedEvent = null; | |
664 | LttngLocation curLocation = null; | |
665 | ||
666 | // If the location in context is null, create a new one | |
667 | if (context.getLocation() == null) { | |
668 | curLocation = new LttngLocation(); | |
669 | context.setLocation(curLocation); | |
cbdacf03 | 670 | } else |
12c155f5 | 671 | curLocation = (LttngLocation) context.getLocation(); |
12c155f5 FC |
672 | |
673 | // *** HACK *** | |
674 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
675 | // once ParseEvent() is called | |
676 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
677 | // event. | |
678 | // So, before "Parsing" an event, we have to make sure we didn't "Read" | |
679 | // it alreafy. | |
680 | // Also, "Reading" invalidate the previous Event in LTTNG and seek back | |
681 | // is very costly, | |
682 | // so calling twice "Parse" will return the same event, giving a way to | |
683 | // get the "Currently loaded" event | |
684 | ||
685 | // *** Positionning trick : | |
686 | // ParseEvent only read the trace if : | |
61d428bd | 687 | // 1- The last operation was NOT a ParseEvent --> A read is required |
12c155f5 FC |
688 | // OR |
689 | // 2- The time of the previous location is different from the current | |
690 | // one --> A seek + a read is required | |
61d428bd | 691 | if (!curLocation.isLastOperationParse() |
12c155f5 FC |
692 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { |
693 | // Previous time != Current time : We need to reposition to the | |
694 | // current time | |
695 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
cbdacf03 | 696 | if (PRINT_DEBUG) |
12c155f5 FC |
697 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ |
698 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
699 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
12c155f5 FC |
700 | seekEvent(curLocation.getOperationTime()); |
701 | } | |
702 | ||
703 | // Read the next event from the trace. The last one will NO LONGER | |
704 | // BE VALID. | |
705 | returnedEvent = readEvent(curLocation); | |
cbdacf03 | 706 | } else |
12c155f5 FC |
707 | // No event was read, just return the one currently loaded (the last |
708 | // one we read) | |
709 | returnedEvent = currentLttngEvent; | |
12c155f5 FC |
710 | |
711 | // If we read an event, set it's time to the locations (both previous | |
712 | // and current) | |
713 | if (returnedEvent != null) { | |
714 | previousLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
715 | curLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
716 | } | |
717 | ||
718 | // Set the operation marker as parse to both location, to be able to | |
719 | // detect we already "read" this event | |
720 | previousLocation.setLastOperationParse(); | |
721 | curLocation.setLastOperationParse(); | |
722 | ||
723 | return returnedEvent; | |
724 | } | |
725 | ||
726 | /* | |
727 | * Read the next event from the JNI and convert it as Lttng Event<p> | |
728 | * | |
cbdacf03 FC |
729 | * @param location Current LttngLocation that to be updated with the event |
730 | * timestamp | |
12c155f5 FC |
731 | * |
732 | * @return The LttngEvent we read of null if no event are available | |
733 | * | |
734 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
735 | * | |
736 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
737 | */ | |
cbdacf03 | 738 | private synchronized LttngEvent readEvent(final LttngLocation location) { |
12c155f5 FC |
739 | LttngEvent returnedEvent = null; |
740 | JniEvent tmpEvent = null; | |
741 | ||
742 | // Read the next event from JNI. THIS WILL INVALIDATE THE CURRENT LTTNG | |
743 | // EVENT. | |
744 | tmpEvent = currentJniTrace.readNextEvent(); | |
745 | ||
746 | if (tmpEvent != null) { | |
747 | // *** NOTE | |
748 | // Convert will update the currentLttngEvent | |
749 | returnedEvent = convertJniEventToTmf(tmpEvent); | |
750 | ||
751 | location.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
cbdacf03 | 752 | } else |
12c155f5 | 753 | location.setOperationTime(getEndTime().getValue() + 1); |
12c155f5 FC |
754 | |
755 | return returnedEvent; | |
756 | } | |
757 | ||
758 | /** | |
759 | * Method to convert a JniEvent into a LttngEvent. | |
760 | * <p> | |
761 | * | |
cbdacf03 FC |
762 | * Note : This method will call LttngEvent convertEventJniToTmf(JniEvent, |
763 | * boolean) with a default value for isParsingNeeded | |
12c155f5 | 764 | * |
cbdacf03 | 765 | * @param newEvent The JniEvent to convert into LttngEvent |
12c155f5 FC |
766 | * |
767 | * @return The converted LttngEvent | |
768 | * | |
769 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
5945cec9 | 770 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent |
12c155f5 | 771 | */ |
cbdacf03 | 772 | public synchronized LttngEvent convertJniEventToTmf(final JniEvent newEvent) { |
12c155f5 FC |
773 | currentLttngEvent = convertJniEventToTmf(newEvent, IS_PARSING_NEEDED_DEFAULT); |
774 | ||
775 | return currentLttngEvent; | |
776 | } | |
777 | ||
778 | /** | |
779 | * Method to convert a JniEvent into a LttngEvent | |
780 | * | |
cbdacf03 FC |
781 | * @param jniEvent The JniEvent to convert into LttngEvent |
782 | * @param isParsingNeeded A boolean value telling if the event should be | |
783 | * parsed or not. | |
12c155f5 FC |
784 | * |
785 | * @return The converted LttngEvent | |
786 | * | |
787 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
5945cec9 | 788 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent |
12c155f5 | 789 | */ |
cbdacf03 | 790 | public synchronized LttngEvent convertJniEventToTmf(final JniEvent jniEvent, final boolean isParsingNeeded) { |
12c155f5 | 791 | |
212550ba | 792 | if (UNIQUE_EVENT) { |
12c155f5 FC |
793 | |
794 | // *** | |
795 | // UNHACKED : We can no longer do that because TCF need to maintain | |
796 | // several events at once. | |
797 | // This is very slow to do so in LTTng, this has to be temporary. | |
798 | // *** HACK *** | |
799 | // To save time here, we only set value instead of allocating new | |
800 | // object | |
801 | // This give an HUGE performance improvement | |
802 | // all allocation done in the LttngTrace constructor | |
803 | // *** | |
804 | eventTimestamp.setValue(jniEvent.getEventTime().getTime()); | |
99005796 | 805 | eventSource = jniEvent.requestEventSource(); |
12c155f5 FC |
806 | |
807 | eventType = traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent)); | |
808 | ||
cbdacf03 FC |
809 | final String fullTracePath = getName(); |
810 | final String reference = fullTracePath.substring(fullTracePath.lastIndexOf('/') + 1); | |
4641c2f7 | 811 | currentLttngEvent.setReference(reference); |
12c155f5 FC |
812 | |
813 | eventContent.emptyContent(); | |
814 | ||
815 | currentLttngEvent.setType(eventType); | |
816 | // Save the jni reference | |
817 | currentLttngEvent.updateJniEventReference(jniEvent); | |
818 | ||
819 | // Parse now if was asked | |
820 | // Warning : THIS IS SLOW | |
cbdacf03 | 821 | if (isParsingNeeded) |
12c155f5 | 822 | eventContent.getFields(); |
12c155f5 FC |
823 | |
824 | return currentLttngEvent; | |
cbdacf03 | 825 | } else |
12c155f5 | 826 | return convertJniEventToTmfMultipleEventEvilFix(jniEvent, isParsingNeeded); |
12c155f5 FC |
827 | |
828 | } | |
829 | ||
830 | /** | |
cbdacf03 FC |
831 | * This method is a temporary fix to support multiple events at once in TMF |
832 | * This is expected to be slow and should be fixed in another way. See | |
833 | * comment in convertJniEventToTmf(); | |
12c155f5 | 834 | * |
cbdacf03 | 835 | * @param jniEvent The current JNI Event |
12c155f5 FC |
836 | * @return Current Lttng Event fully parsed |
837 | */ | |
cbdacf03 FC |
838 | private synchronized LttngEvent convertJniEventToTmfMultipleEventEvilFix(final JniEvent jniEvent, |
839 | final boolean isParsingNeeded) { | |
12c155f5 FC |
840 | // *** HACK *** |
841 | // Below : the "fix" with all the new and the full-parse | |
842 | // Allocating new memory is slow. | |
843 | // Parsing every events is very slow. | |
844 | eventTimestamp = new LttngTimestamp(jniEvent.getEventTime().getTime()); | |
99005796 | 845 | eventSource = jniEvent.requestEventSource(); |
4641c2f7 | 846 | eventReference = getName(); |
12c155f5 FC |
847 | eventType = new LttngEventType(traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent))); |
848 | eventContent = new LttngEventContent(currentLttngEvent); | |
849 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, | |
850 | null); | |
851 | ||
852 | // The jni reference is no longer reliable but we will keep it anyhow | |
853 | currentLttngEvent.updateJniEventReference(jniEvent); | |
854 | // Ensure that the content is correctly set | |
855 | eventContent.setEvent(currentLttngEvent); | |
856 | ||
857 | // Parse the event if it was needed | |
858 | // *** WARNING *** | |
859 | // ONLY for testing, NOT parsing events with non-unique events WILL | |
860 | // result in segfault in the JVM | |
cbdacf03 | 861 | if (isParsingNeeded) |
12c155f5 | 862 | eventContent.getFields(); |
12c155f5 FC |
863 | |
864 | return currentLttngEvent; | |
865 | } | |
866 | ||
867 | /** | |
868 | * Reference to the current LttngTrace we are reading from. | |
869 | * <p> | |
870 | * | |
cbdacf03 FC |
871 | * Note : This bypass the framework and should not be use, except for |
872 | * testing! | |
12c155f5 FC |
873 | * |
874 | * @return Reference to the current LttngTrace | |
875 | * | |
876 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
877 | */ | |
878 | public JniTrace getCurrentJniTrace() { | |
879 | return currentJniTrace; | |
880 | } | |
881 | ||
882 | /** | |
883 | * Return a reference to the current LttngEvent we have in memory. | |
884 | * | |
885 | * @return The current (last read) LttngEvent | |
886 | * | |
5945cec9 | 887 | * @see org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent |
12c155f5 FC |
888 | */ |
889 | public synchronized LttngEvent getCurrentEvent() { | |
890 | return currentLttngEvent; | |
891 | } | |
892 | ||
893 | /** | |
894 | * Get the major version number for the current trace | |
895 | * | |
896 | * @return Version major or -1 if unknown | |
897 | * | |
898 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
899 | * | |
900 | */ | |
901 | public short getVersionMajor() { | |
cbdacf03 | 902 | if (currentJniTrace != null) |
12c155f5 | 903 | return currentJniTrace.getLttMajorVersion(); |
cbdacf03 | 904 | else |
12c155f5 | 905 | return -1; |
12c155f5 FC |
906 | } |
907 | ||
908 | /** | |
909 | * Get the minor version number for the current trace | |
910 | * | |
911 | * @return Version minor or -1 if unknown | |
912 | * | |
913 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
914 | * | |
915 | */ | |
916 | public short getVersionMinor() { | |
cbdacf03 | 917 | if (currentJniTrace != null) |
12c155f5 | 918 | return currentJniTrace.getLttMinorVersion(); |
cbdacf03 | 919 | else |
12c155f5 | 920 | return -1; |
12c155f5 FC |
921 | } |
922 | ||
923 | /** | |
924 | * Get the number of CPU for this trace | |
925 | * | |
926 | * @return Number of CPU or -1 if unknown | |
927 | * | |
928 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
929 | * | |
930 | */ | |
931 | public int getCpuNumber() { | |
cbdacf03 | 932 | if (currentJniTrace != null) |
12c155f5 | 933 | return currentJniTrace.getCpuNumber(); |
cbdacf03 | 934 | else |
12c155f5 | 935 | return -1; |
12c155f5 FC |
936 | } |
937 | ||
12c155f5 FC |
938 | @Override |
939 | public synchronized void dispose() { | |
940 | if (currentJniTrace != null) | |
941 | currentJniTrace.closeTrace(); | |
942 | super.dispose(); | |
943 | } | |
944 | ||
945 | /** | |
946 | * Return a String identifying this trace. | |
947 | * | |
948 | * @return String that identify this trace | |
949 | */ | |
950 | @Override | |
3b38ea61 | 951 | @SuppressWarnings("nls") |
12c155f5 FC |
952 | public String toString() { |
953 | String returnedData = ""; | |
64fe8e8a | 954 | |
12c155f5 FC |
955 | returnedData += "Path :" + getPath() + " "; |
956 | returnedData += "Trace:" + currentJniTrace + " "; | |
957 | returnedData += "Event:" + currentLttngEvent; | |
64fe8e8a | 958 | |
12c155f5 FC |
959 | return returnedData; |
960 | } | |
cb866e08 | 961 | |
28b94d61 FC |
962 | } |
963 | ||
964 | /* | |
965 | * EventTypeKey inner class | |
966 | * | |
cbdacf03 FC |
967 | * This class is used to make the process of generating the HashMap key more |
968 | * transparent and so less error prone to use | |
28b94d61 | 969 | */ |
64fe8e8a | 970 | final class EventTypeKey { |
cbdacf03 | 971 | |
12c155f5 FC |
972 | // *** WARNING *** |
973 | // These two getEventTypeKey() functions should ALWAYS construct the key the | |
974 | // same ways! | |
975 | // Otherwise, every type search will fail! | |
64fe8e8a | 976 | |
12c155f5 FC |
977 | // added final to encourage inlining. |
978 | ||
979 | // generating a hash code by hand to avoid a string creation | |
cbdacf03 | 980 | final static public int getEventTypeHash(final LttngEventType newEventType) { |
12c155f5 FC |
981 | return generateHash(newEventType.getTracefileName(), newEventType.getCpuId(), newEventType.getMarkerName()); |
982 | } | |
983 | ||
cbdacf03 | 984 | final private static int generateHash(final String traceFileName, final long cpuNumber, final String markerName) { |
12c155f5 FC |
985 | // 0x1337 is a prime number. The number of CPUs is always under 8192 on |
986 | // the current kernel, so this will work with the current linux kernel. | |
cbdacf03 | 987 | final int cpuHash = (int) (cpuNumber * (0x1337)); |
12c155f5 FC |
988 | return traceFileName.hashCode() ^ (cpuHash) ^ markerName.hashCode(); |
989 | } | |
990 | ||
991 | // generating a hash code by hand to avoid a string creation | |
cbdacf03 | 992 | final static public int getEventTypeHash(final JniEvent newEvent) { |
12c155f5 FC |
993 | return generateHash(newEvent.getParentTracefile().getTracefileName(), newEvent.getParentTracefile() |
994 | .getCpuNumber(), newEvent.requestEventMarker().getName()); | |
995 | } | |
64fe8e8a | 996 | |
a3767fd9 | 997 | } |