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ff71e543 | 1 | /******************************************************************************* |
3a723766 | 2 | * Copyright (c) 2014, 2015 Ericsson |
ff71e543 MK |
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 | * Matthew Khouzam - Initial API and implementation | |
3a723766 | 11 | * Patrick Tasse - Fix parsing of instance numbers |
ff71e543 MK |
12 | *******************************************************************************/ |
13 | ||
7ce90559 | 14 | package org.eclipse.tracecompass.btf.core.trace; |
ff71e543 MK |
15 | |
16 | import java.io.File; | |
17 | import java.io.FileNotFoundException; | |
18 | import java.io.IOException; | |
19 | import java.io.RandomAccessFile; | |
20 | import java.nio.ByteBuffer; | |
21 | import java.text.ParseException; | |
22 | import java.text.SimpleDateFormat; | |
23 | import java.util.Date; | |
24 | import java.util.HashMap; | |
25 | import java.util.Map; | |
26 | import java.util.TreeMap; | |
27 | ||
28 | import org.eclipse.core.resources.IProject; | |
29 | import org.eclipse.core.resources.IResource; | |
30 | import org.eclipse.core.runtime.IStatus; | |
31 | import org.eclipse.core.runtime.Status; | |
66838307 | 32 | import org.eclipse.jdt.annotation.NonNull; |
7ce90559 AM |
33 | import org.eclipse.tracecompass.btf.core.Activator; |
34 | import org.eclipse.tracecompass.btf.core.event.BtfEvent; | |
35 | import org.eclipse.tracecompass.btf.core.event.BtfEventType; | |
2bdf0193 AM |
36 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
37 | import org.eclipse.tracecompass.tmf.core.event.ITmfEventField; | |
b04903a2 | 38 | import org.eclipse.tracecompass.tmf.core.event.aspect.ITmfEventAspect; |
2bdf0193 AM |
39 | import org.eclipse.tracecompass.tmf.core.exceptions.TmfTraceException; |
40 | import org.eclipse.tracecompass.tmf.core.io.BufferedRandomAccessFile; | |
41 | import org.eclipse.tracecompass.tmf.core.parsers.custom.CustomTxtTraceContext; | |
234838b2 | 42 | import org.eclipse.tracecompass.tmf.core.project.model.ITmfPropertiesProvider; |
0bc16991 MAL |
43 | import org.eclipse.tracecompass.tmf.core.signal.TmfSignalHandler; |
44 | import org.eclipse.tracecompass.tmf.core.signal.TmfTraceRangeUpdatedSignal; | |
2bdf0193 AM |
45 | import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimestamp; |
46 | import org.eclipse.tracecompass.tmf.core.trace.ITmfContext; | |
2bdf0193 AM |
47 | import org.eclipse.tracecompass.tmf.core.trace.TmfContext; |
48 | import org.eclipse.tracecompass.tmf.core.trace.TmfTrace; | |
d26d67f5 | 49 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; |
2bdf0193 AM |
50 | import org.eclipse.tracecompass.tmf.core.trace.TraceValidationStatus; |
51 | import org.eclipse.tracecompass.tmf.core.trace.indexer.ITmfPersistentlyIndexable; | |
52 | import org.eclipse.tracecompass.tmf.core.trace.indexer.ITmfTraceIndexer; | |
53 | import org.eclipse.tracecompass.tmf.core.trace.indexer.TmfBTreeTraceIndexer; | |
54 | import org.eclipse.tracecompass.tmf.core.trace.indexer.checkpoint.ITmfCheckpoint; | |
55 | import org.eclipse.tracecompass.tmf.core.trace.indexer.checkpoint.TmfCheckpoint; | |
56 | import org.eclipse.tracecompass.tmf.core.trace.location.ITmfLocation; | |
57 | import org.eclipse.tracecompass.tmf.core.trace.location.TmfLongLocation; | |
ff71e543 MK |
58 | |
59 | import com.google.common.collect.ImmutableMap; | |
60 | ||
61 | /** | |
62 | * BTF reader. Reads Best Trace Format traces. | |
63 | * | |
64 | * @author Matthew Khouzam | |
65 | */ | |
234838b2 | 66 | public class BtfTrace extends TmfTrace implements ITmfPersistentlyIndexable, ITmfPropertiesProvider { |
ff71e543 | 67 | |
73604f55 MK |
68 | private static final int MAX_FIELDS = 7; |
69 | ||
70 | private static final long MICROSECONDS_IN_A_SECOND = 1000000L; | |
71 | ||
ff71e543 MK |
72 | private static final String VERSION = "#version"; //$NON-NLS-1$ |
73 | private static final String CREATOR = "#creator"; //$NON-NLS-1$ | |
74 | private static final String CREATIONDATE = "#creationDate"; //$NON-NLS-1$ | |
75 | private static final String INPUTFILE = "#inputFile"; //$NON-NLS-1$ | |
76 | private static final String TIMESCALE = "#timeScale"; //$NON-NLS-1$ | |
77 | private static final String ENTITYTYPE = "#entityType"; //$NON-NLS-1$ | |
78 | private static final String ENTITYTABLE = "#entityTable"; //$NON-NLS-1$ | |
79 | private static final String ENTITYTYPETABLE = "#entityTypeTable"; //$NON-NLS-1$ | |
80 | ||
81 | // lower-case helpers | |
82 | private static final String lCREATIONDATE = "#creationdate"; //$NON-NLS-1$ | |
83 | private static final String lINPUTFILE = "#inputfile"; //$NON-NLS-1$ | |
84 | private static final String lTIMESCALE = "#timescale"; //$NON-NLS-1$ | |
85 | private static final String lENTITYTYPE = "#entitytype"; //$NON-NLS-1$ | |
86 | private static final String lENTITYTABLE = "#entitytable"; //$NON-NLS-1$ | |
87 | private static final String lENTITYTYPETABLE = "#entitytypetable"; //$NON-NLS-1$ | |
88 | ||
89 | private static final TmfLongLocation NULL_LOCATION = new TmfLongLocation(-1L); | |
90 | ||
ff71e543 MK |
91 | private static final int CACHE_SIZE = 256; |
92 | private static final int MAX_CONFIDENCE = 100; | |
93 | private static final int MAX_LINES = 100; | |
94 | ||
95 | private static int fCheckpointSize = -1; | |
96 | ||
66838307 | 97 | private final @NonNull Map<String, String> fProperties = new HashMap<>(); |
ff71e543 | 98 | |
66838307 MAL |
99 | private final @NonNull Map<Integer, String> fEntityTable = new TreeMap<>(); |
100 | private final @NonNull Map<BtfEventType, String> fEntityTypeTable = new HashMap<>(); | |
101 | private final @NonNull Map<Integer, BtfEventType> fEntityTypes = new TreeMap<>(); | |
ff71e543 MK |
102 | |
103 | private String fVersion; | |
104 | private String fCreator; | |
105 | private String fCreationDate; | |
106 | private String fInputFile; | |
107 | // default unit is ns | |
5dca27ae | 108 | private BtfTimestampFormat fTsFormat = BtfTimestampFormat.NS; |
ff71e543 MK |
109 | |
110 | private File fFile; | |
111 | private RandomAccessFile fFileInput; | |
112 | private long fDataOffset; | |
113 | private long fTsOffset = 0; | |
114 | ||
115 | /** | |
116 | * Default constructor | |
117 | */ | |
118 | public BtfTrace() { | |
119 | super(); | |
120 | setCacheSize(CACHE_SIZE); | |
121 | fProperties.put(TIMESCALE, fTsFormat.toString()); | |
122 | } | |
123 | ||
124 | private void parseHeader(RandomAccessFile input) throws IOException { | |
125 | String line = input.readLine(); | |
126 | long pos = 0; | |
127 | while (line != null && line.startsWith("#")) { //$NON-NLS-1$ | |
128 | String[] tokens = line.split(" ", 2); //$NON-NLS-1$ | |
129 | /* | |
130 | * please note that the examples we were given and the spec are NOT | |
131 | * consistent, so we are ignoring the case to avoid issues | |
132 | */ | |
133 | switch (tokens[0].toLowerCase()) { | |
134 | case VERSION: | |
135 | fVersion = tokens[1]; | |
136 | fProperties.put(VERSION, fVersion); | |
137 | break; | |
138 | case CREATOR: | |
139 | fCreator = tokens[1]; | |
140 | fProperties.put(CREATOR, fCreator); | |
141 | break; | |
142 | case lCREATIONDATE: | |
143 | fCreationDate = tokens[1]; | |
144 | fProperties.put(CREATIONDATE, fCreationDate); | |
145 | ||
146 | try { | |
eddb2560 MAL |
147 | // DateFormats are inherently unsafe for multithreaded use so we can't make this a field. Just in case. |
148 | final SimpleDateFormat ISO8601DATEFORMAT = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssX"); //$NON-NLS-1$ | |
ff71e543 | 149 | Date dateTime = ISO8601DATEFORMAT.parse(fCreationDate); |
73604f55 | 150 | fTsOffset = dateTime.getTime() * MICROSECONDS_IN_A_SECOND; |
ff71e543 MK |
151 | } catch (ParseException e) { |
152 | Activator.logWarning("Creation date error: " + e.getMessage()); //$NON-NLS-1$ | |
153 | } | |
154 | break; | |
155 | case lINPUTFILE: | |
156 | fInputFile = tokens[1]; | |
157 | fProperties.put(INPUTFILE, fInputFile); | |
158 | break; | |
159 | case lTIMESCALE: | |
5dca27ae | 160 | fTsFormat = BtfTimestampFormat.parse(tokens[1]); |
ff71e543 MK |
161 | fProperties.put(TIMESCALE, fTsFormat.toString()); |
162 | break; | |
163 | case lENTITYTYPE: | |
164 | pos = fFileInput.getFilePointer(); | |
165 | line = fFileInput.readLine(); | |
166 | while (line.startsWith("#-")) { //$NON-NLS-1$ | |
167 | String tempLine = line.substring(1); | |
168 | String[] elements = tempLine.split(" ", 2); //$NON-NLS-1$ | |
169 | fEntityTypes.put(Integer.parseInt(elements[0]), BtfEventTypeFactory.parse(elements[1])); | |
170 | pos = fFileInput.getFilePointer(); | |
171 | line = fFileInput.readLine(); | |
172 | } | |
173 | fFileInput.seek(pos); | |
174 | fProperties.put(ENTITYTYPE, fEntityTypes.toString()); | |
175 | break; | |
176 | case lENTITYTABLE: | |
177 | pos = fFileInput.getFilePointer(); | |
178 | line = fFileInput.readLine(); | |
179 | while (line.startsWith("#-")) { //$NON-NLS-1$ | |
180 | String tempLine = line.substring(1); | |
181 | String[] elements = tempLine.split(" ", 2); //$NON-NLS-1$ | |
182 | fEntityTable.put(Integer.parseInt(elements[0]), elements[1]); | |
183 | pos = fFileInput.getFilePointer(); | |
184 | line = fFileInput.readLine(); | |
185 | } | |
186 | fProperties.put(ENTITYTABLE, fEntityTable.toString()); | |
187 | fFileInput.seek(pos); | |
188 | break; | |
189 | case lENTITYTYPETABLE: | |
190 | pos = fFileInput.getFilePointer(); | |
191 | line = fFileInput.readLine(); | |
192 | while (line.startsWith("#-")) { //$NON-NLS-1$ | |
193 | String tempLine = line.substring(1); | |
194 | String[] elements = tempLine.split(" ", 2); //$NON-NLS-1$ | |
195 | fEntityTypeTable.put(BtfEventTypeFactory.parse(elements[0]), elements[1]); | |
196 | pos = fFileInput.getFilePointer(); | |
197 | line = fFileInput.readLine(); | |
198 | } | |
199 | fFileInput.seek(pos); | |
200 | fProperties.put(ENTITYTYPETABLE, fEntityTypeTable.toString()); | |
201 | break; | |
202 | default: | |
203 | break; | |
204 | } | |
205 | fDataOffset = input.getFilePointer(); | |
206 | line = input.readLine(); | |
207 | } | |
208 | fTsOffset = (long) (fTsOffset * fTsFormat.getScaleFactor()); | |
209 | } | |
210 | ||
211 | @Override | |
212 | public void initTrace(IResource resource, String path, Class<? extends ITmfEvent> type) throws TmfTraceException { | |
213 | super.initTrace(resource, path, type); | |
214 | fFile = new File(path); | |
215 | try { | |
216 | fFileInput = new RandomAccessFile(fFile, "r"); //$NON-NLS-1$ | |
217 | parseHeader(fFileInput); | |
218 | } catch (IOException e) { | |
5c9bdcbe | 219 | throw new TmfTraceException(e.getMessage(), e); |
ff71e543 MK |
220 | } |
221 | ||
222 | } | |
223 | ||
0bc16991 MAL |
224 | private void initFile() throws TmfTraceException { |
225 | closeFile(); | |
226 | try { | |
227 | fFileInput = new BufferedRandomAccessFile(getPath(), "r"); //$NON-NLS-1$ | |
228 | } catch (IOException e) { | |
229 | throw new TmfTraceException(e.getMessage(), e); | |
230 | } | |
231 | } | |
232 | ||
233 | private void closeFile() { | |
234 | if (fFileInput != null) { | |
235 | try { | |
236 | fFileInput.close(); | |
237 | } catch (IOException e) { | |
238 | } finally { | |
239 | fFileInput = null; | |
240 | } | |
241 | } | |
242 | } | |
243 | ||
ff71e543 MK |
244 | @Override |
245 | public IStatus validate(IProject project, String path) { | |
246 | File file = new File(path); | |
247 | if (!file.exists()) { | |
248 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "File not found: " + path); //$NON-NLS-1$ | |
249 | } | |
250 | if (!file.isFile()) { | |
251 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Not a file. It's a directory: " + path); //$NON-NLS-1$ | |
252 | } | |
253 | int confidence = 0; | |
d26d67f5 BH |
254 | try { |
255 | if (!TmfTraceUtils.isText(file)) { | |
256 | return new TraceValidationStatus(confidence, Activator.PLUGIN_ID); | |
257 | } | |
258 | } catch (IOException e) { | |
259 | Activator.logError("Error validating file: " + path, e); //$NON-NLS-1$ | |
260 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "IOException validating file: " + path, e); //$NON-NLS-1$ | |
261 | } | |
ff71e543 MK |
262 | try (BufferedRandomAccessFile rafile = new BufferedRandomAccessFile(path, "r")) { //$NON-NLS-1$ |
263 | int lineCount = 0; | |
264 | int matches = 0; | |
265 | String line = rafile.getNextLine(); | |
266 | while ((line != null) && line.startsWith("#")) { //$NON-NLS-1$ | |
267 | line = rafile.getNextLine(); | |
268 | } | |
269 | while ((line != null) && (lineCount++ < MAX_LINES)) { | |
270 | try { | |
271 | ITmfEvent event = parseLine(0, line); | |
272 | if (event != null) { | |
273 | matches++; | |
274 | } | |
275 | } catch (RuntimeException e) { | |
276 | confidence = Integer.MIN_VALUE; | |
277 | } | |
278 | ||
279 | confidence = MAX_CONFIDENCE * matches / lineCount; | |
280 | line = rafile.getNextLine(); | |
281 | } | |
282 | } catch (IOException e) { | |
283 | Activator.logError("Error validating file: " + path, e); //$NON-NLS-1$ | |
284 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "IOException validating file: " + path, e); //$NON-NLS-1$ | |
285 | } | |
286 | ||
287 | return new TraceValidationStatus(confidence, Activator.PLUGIN_ID); | |
288 | } | |
289 | ||
290 | @Override | |
291 | public ITmfLocation getCurrentLocation() { | |
292 | long temp = -1; | |
293 | try { | |
294 | temp = fFileInput.getFilePointer(); | |
295 | } catch (IOException e) { | |
296 | } | |
297 | return new TmfLongLocation(temp); | |
298 | } | |
299 | ||
300 | @Override | |
301 | public double getLocationRatio(ITmfLocation location) { | |
302 | long size = fFile.length() - fDataOffset; | |
303 | long pos; | |
304 | try { | |
305 | pos = fFileInput.getFilePointer() - fDataOffset; | |
306 | } catch (IOException e) { | |
307 | pos = 0; | |
308 | } | |
309 | return 1.0 / size * pos; | |
310 | } | |
311 | ||
312 | @Override | |
313 | public ITmfContext seekEvent(ITmfLocation location) { | |
314 | final TmfContext context = new TmfContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
315 | if (NULL_LOCATION.equals(location) || fFile == null) { | |
316 | return context; | |
317 | } | |
318 | try { | |
319 | if (location == null) { | |
320 | fFileInput.seek(fDataOffset); | |
321 | } else if (location.getLocationInfo() instanceof Long) { | |
322 | fFileInput.seek((Long) location.getLocationInfo()); | |
323 | } | |
324 | context.setLocation(new TmfLongLocation(fFileInput.getFilePointer())); | |
325 | return context; | |
326 | } catch (final FileNotFoundException e) { | |
327 | Activator.logError("Error seeking event. File not found: " + getPath(), e); //$NON-NLS-1$ | |
328 | return context; | |
329 | } catch (final IOException e) { | |
330 | Activator.logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$ | |
331 | return context; | |
332 | } | |
333 | } | |
334 | ||
335 | @Override | |
336 | public ITmfContext seekEvent(double ratio) { | |
337 | if (fFile == null) { | |
338 | return new TmfContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
339 | } | |
340 | try { | |
341 | long pos = Math.round(ratio * fFile.length()) - fDataOffset; | |
342 | while (pos > 0) { | |
343 | fFileInput.seek(pos - 1); | |
344 | if (fFileInput.read() == '\n') { | |
345 | break; | |
346 | } | |
347 | pos--; | |
348 | } | |
349 | final ITmfLocation location = new TmfLongLocation(pos); | |
350 | final ITmfContext context = seekEvent(location); | |
351 | context.setRank(ITmfContext.UNKNOWN_RANK); | |
352 | return context; | |
353 | } catch (final IOException e) { | |
354 | Activator.logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$ | |
355 | return new CustomTxtTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
356 | } | |
357 | } | |
358 | ||
359 | @Override | |
360 | public ITmfEvent parseEvent(ITmfContext tmfContext) { | |
361 | if (fFile == null || (!(tmfContext instanceof TmfContext))) { | |
362 | return null; | |
363 | } | |
364 | ||
365 | final TmfContext context = (TmfContext) tmfContext; | |
366 | if (context.getLocation() == null | |
367 | || !(context.getLocation().getLocationInfo() instanceof Long) | |
368 | || NULL_LOCATION.equals(context.getLocation())) { | |
369 | return null; | |
370 | } | |
371 | ||
372 | return parseLine(context); | |
373 | ||
374 | } | |
375 | ||
376 | /** | |
377 | * Parse a line with a context | |
378 | * | |
379 | * @param context | |
380 | * the context, has a location | |
381 | * @return the event from a given line | |
382 | */ | |
383 | private ITmfEvent parseLine(TmfContext context) { | |
384 | try { | |
385 | if (!context.getLocation().getLocationInfo().equals(fFileInput.getFilePointer())) { | |
386 | seekEvent(context.getLocation()); | |
387 | } | |
388 | } catch (IOException e1) { | |
389 | seekEvent(context.getLocation()); | |
390 | } | |
391 | String line; | |
392 | try { | |
393 | line = fFileInput.readLine(); | |
394 | return parseLine(context.getRank(), line); | |
395 | ||
396 | } catch (IOException e) { | |
397 | } | |
398 | ||
399 | return null; | |
400 | } | |
401 | ||
402 | /** | |
403 | * Parse a line of text and make an event using it. | |
404 | * | |
405 | * @param rank | |
406 | * the rank of the event | |
407 | * @param line | |
408 | * the raw string of the event | |
409 | * @return the event | |
410 | */ | |
411 | private ITmfEvent parseLine(long rank, String line) { | |
412 | if (line == null) { | |
413 | return null; | |
414 | } | |
73604f55 | 415 | String[] tokens = line.split(",", MAX_FIELDS); //$NON-NLS-1$ |
3a723766 PT |
416 | if (tokens.length < MAX_FIELDS) { |
417 | return null; | |
418 | } | |
419 | int i = 0; | |
420 | long timestamp = Long.parseLong(tokens[i++]); | |
421 | String source = tokens[i++]; | |
422 | long sourceInstance = -1; | |
423 | try { | |
424 | sourceInstance = Long.parseLong(tokens[i++]); | |
425 | } catch (NumberFormatException e) { | |
426 | // this field can be empty | |
427 | } | |
428 | BtfEventType type = BtfEventTypeFactory.parse(tokens[i++]); | |
429 | String target = tokens[i++]; | |
430 | long targetInstance = -1; | |
431 | try { | |
432 | targetInstance = Long.parseLong(tokens[i++]); | |
433 | } catch (NumberFormatException e) { | |
434 | // this field can be empty | |
435 | } | |
436 | String event = tokens[i++]; | |
ff71e543 MK |
437 | |
438 | ITmfEventField content = type.generateContent(event, sourceInstance, targetInstance); | |
439 | ||
440 | return new BtfEvent(this, rank, | |
6b44794a | 441 | getTimestampTransform().transform(fTsFormat.createTimestamp(timestamp + fTsOffset)), |
ff71e543 MK |
442 | source, |
443 | type, | |
444 | type.getDescription(), | |
445 | content, | |
446 | target); | |
447 | } | |
448 | ||
449 | @Override | |
450 | public int getCheckpointSize() { | |
eddb2560 | 451 | synchronized (BtfTrace.class) { |
ff71e543 MK |
452 | if (fCheckpointSize == -1) { |
453 | TmfCheckpoint c = new TmfCheckpoint(TmfTimestamp.ZERO, new TmfLongLocation(0L), 0); | |
454 | ByteBuffer b = ByteBuffer.allocate(ITmfCheckpoint.MAX_SERIALIZE_SIZE); | |
455 | b.clear(); | |
456 | c.serialize(b); | |
457 | fCheckpointSize = b.position(); | |
458 | } | |
459 | } | |
460 | ||
461 | return fCheckpointSize; | |
462 | } | |
463 | ||
464 | @Override | |
465 | public ITmfLocation restoreLocation(ByteBuffer bufferIn) { | |
466 | return new TmfLongLocation(bufferIn); | |
467 | } | |
468 | ||
469 | @Override | |
470 | protected ITmfTraceIndexer createIndexer(int interval) { | |
471 | return new TmfBTreeTraceIndexer(this, interval); | |
472 | } | |
473 | ||
234838b2 GB |
474 | /** |
475 | * @since 2.0 | |
476 | */ | |
ff71e543 | 477 | @Override |
234838b2 | 478 | public Map<String, String> getProperties() { |
ff71e543 MK |
479 | return ImmutableMap.copyOf(fProperties); |
480 | } | |
481 | ||
b04903a2 AM |
482 | @Override |
483 | public Iterable<ITmfEventAspect> getEventAspects() { | |
484 | return BtfEventAspects.getAspects(); | |
485 | } | |
486 | ||
ff71e543 | 487 | @Override |
d9aa847c AM |
488 | public synchronized void dispose() { |
489 | RandomAccessFile raf = fFileInput; | |
490 | if (raf != null) { | |
491 | try { | |
492 | raf.close(); | |
493 | } catch (IOException e) { | |
494 | } | |
ff71e543 | 495 | } |
d9aa847c | 496 | super.dispose(); |
ff71e543 MK |
497 | } |
498 | ||
0bc16991 MAL |
499 | @TmfSignalHandler |
500 | @Override | |
501 | public void traceRangeUpdated(TmfTraceRangeUpdatedSignal signal) { | |
502 | if (signal.getTrace() == this) { | |
503 | try { | |
504 | synchronized (this) { | |
505 | // Reset the file handle in case it has reached the end of the | |
506 | // file already. Otherwise, it will not be able to read new data | |
507 | // pass the previous end. | |
508 | initFile(); | |
509 | } | |
510 | } catch (TmfTraceException e) { | |
511 | Activator.logError(e.getLocalizedMessage(), e); | |
512 | } | |
513 | } | |
514 | super.traceRangeUpdated(signal); | |
515 | } | |
ff71e543 | 516 | } |