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866e5b51 | 1 | /******************************************************************************* |
74d58b9b | 2 | * Copyright (c) 2011, 2015 Ericsson, Ecole Polytechnique de Montreal and others |
866e5b51 FC |
3 | * |
4 | * All rights reserved. This program and the accompanying materials are made | |
5 | * 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 | * | |
74d58b9b PT |
9 | * Contributors: |
10 | * Matthew Khouzam - Initial API and implementation | |
11 | * Simon Marchi - Initial API and implementation | |
12 | * Patrick Tasse - Bug 470754 - Incorrect time range in CTF Lost Event | |
866e5b51 | 13 | *******************************************************************************/ |
f357bcd4 | 14 | package org.eclipse.tracecompass.ctf.core.trace; |
866e5b51 FC |
15 | |
16 | import java.io.IOException; | |
526c823c | 17 | import java.nio.ByteBuffer; |
b3151232 | 18 | import java.nio.channels.FileChannel.MapMode; |
866e5b51 | 19 | |
a4fa4e36 | 20 | import org.eclipse.jdt.annotation.NonNull; |
733c614c | 21 | import org.eclipse.jdt.annotation.Nullable; |
680f9173 | 22 | import org.eclipse.tracecompass.ctf.core.CTFException; |
f357bcd4 AM |
23 | import org.eclipse.tracecompass.ctf.core.CTFStrings; |
24 | import org.eclipse.tracecompass.ctf.core.event.EventDefinition; | |
25 | import org.eclipse.tracecompass.ctf.core.event.IEventDeclaration; | |
a433ce7d | 26 | import org.eclipse.tracecompass.ctf.core.event.LostEventDeclaration; |
f357bcd4 AM |
27 | import org.eclipse.tracecompass.ctf.core.event.io.BitBuffer; |
28 | import org.eclipse.tracecompass.ctf.core.event.scope.IDefinitionScope; | |
fbe6fa6f | 29 | import org.eclipse.tracecompass.ctf.core.event.scope.ILexicalScope; |
f357bcd4 AM |
30 | import org.eclipse.tracecompass.ctf.core.event.scope.LexicalScope; |
31 | import org.eclipse.tracecompass.ctf.core.event.types.Definition; | |
32 | import org.eclipse.tracecompass.ctf.core.event.types.ICompositeDefinition; | |
33 | import org.eclipse.tracecompass.ctf.core.event.types.IDeclaration; | |
34 | import org.eclipse.tracecompass.ctf.core.event.types.IDefinition; | |
35 | import org.eclipse.tracecompass.ctf.core.event.types.IEventHeaderDeclaration; | |
36 | import org.eclipse.tracecompass.ctf.core.event.types.IntegerDeclaration; | |
37 | import org.eclipse.tracecompass.ctf.core.event.types.IntegerDefinition; | |
38 | import org.eclipse.tracecompass.ctf.core.event.types.SimpleDatatypeDefinition; | |
39 | import org.eclipse.tracecompass.ctf.core.event.types.StructDeclaration; | |
40 | import org.eclipse.tracecompass.ctf.core.event.types.StructDefinition; | |
41 | import org.eclipse.tracecompass.ctf.core.event.types.VariantDefinition; | |
42 | import org.eclipse.tracecompass.internal.ctf.core.SafeMappedByteBuffer; | |
94c255ef | 43 | import org.eclipse.tracecompass.internal.ctf.core.event.EventDeclaration; |
f357bcd4 | 44 | import org.eclipse.tracecompass.internal.ctf.core.event.types.composite.EventHeaderDefinition; |
866e5b51 FC |
45 | |
46 | /** | |
d37aaa7f | 47 | * CTF trace packet reader. Reads the events of a packet of a trace file. |
5c7202b5 | 48 | * |
d37aaa7f FC |
49 | * @author Matthew Khouzam |
50 | * @author Simon Marchi | |
866e5b51 | 51 | */ |
d84419e1 | 52 | public class CTFStreamInputPacketReader implements IDefinitionScope, AutoCloseable { |
866e5b51 FC |
53 | |
54 | // ------------------------------------------------------------------------ | |
6bdc9fac | 55 | // Attributes |
866e5b51 FC |
56 | // ------------------------------------------------------------------------ |
57 | ||
f068c622 MK |
58 | private static final int BITS_PER_BYTE = Byte.SIZE; |
59 | ||
94c255ef MK |
60 | private static final IDefinitionScope EVENT_HEADER_SCOPE = new IDefinitionScope() { |
61 | ||
62 | @Override | |
63 | public IDefinition lookupDefinition(String lookupPath) { | |
64 | return null; | |
65 | } | |
66 | ||
67 | @Override | |
68 | public ILexicalScope getScopePath() { | |
69 | return null; | |
70 | } | |
71 | }; | |
72 | ||
6bdc9fac | 73 | /** BitBuffer used to read the trace file. */ |
733c614c MK |
74 | @Nullable |
75 | private BitBuffer fBitBuffer; | |
866e5b51 | 76 | |
6bdc9fac | 77 | /** StreamInputReader that uses this StreamInputPacketReader. */ |
d84419e1 | 78 | private final CTFStreamInputReader fStreamInputReader; |
866e5b51 | 79 | |
6bdc9fac | 80 | /** Trace packet header. */ |
a4fa4e36 | 81 | private final StructDeclaration fTracePacketHeaderDecl; |
866e5b51 | 82 | |
6bdc9fac | 83 | /** Stream packet context definition. */ |
a4fa4e36 | 84 | private final StructDeclaration fStreamPacketContextDecl; |
866e5b51 | 85 | |
6bdc9fac | 86 | /** Stream event header definition. */ |
6c7592e1 | 87 | private final IDeclaration fStreamEventHeaderDecl; |
866e5b51 | 88 | |
c26d0fe0 | 89 | /** Stream event context definition. */ |
a4fa4e36 | 90 | private final StructDeclaration fStreamEventContextDecl; |
866e5b51 | 91 | |
6c7592e1 MK |
92 | private ICompositeDefinition fCurrentTracePacketHeaderDef; |
93 | private ICompositeDefinition fCurrentStreamEventHeaderDef; | |
94 | private ICompositeDefinition fCurrentStreamPacketContextDef; | |
6bdc9fac | 95 | /** Reference to the index entry of the current packet. */ |
1d92f045 | 96 | private ICTFPacketDescriptor fCurrentPacket = null; |
6bdc9fac | 97 | |
866e5b51 | 98 | /** |
6bdc9fac AM |
99 | * Last timestamp recorded. |
100 | * | |
101 | * Needed to calculate the complete timestamp values for the events with | |
102 | * compact headers. | |
866e5b51 | 103 | */ |
2882273c | 104 | private long fLastTimestamp = 0; |
6bdc9fac AM |
105 | |
106 | /** CPU id of current packet. */ | |
2882273c | 107 | private int fCurrentCpu = 0; |
866e5b51 | 108 | |
2882273c | 109 | private int fLostEventsInThisPacket; |
5c7202b5 | 110 | |
2882273c | 111 | private boolean fHasLost = false; |
c26d0fe0 | 112 | |
866e5b51 | 113 | // ------------------------------------------------------------------------ |
6bdc9fac | 114 | // Constructors |
866e5b51 FC |
115 | // ------------------------------------------------------------------------ |
116 | ||
117 | /** | |
118 | * Constructs a StreamInputPacketReader. | |
119 | * | |
120 | * @param streamInputReader | |
121 | * The StreamInputReader to which this packet reader belongs to. | |
122 | */ | |
d84419e1 | 123 | public CTFStreamInputPacketReader(CTFStreamInputReader streamInputReader) { |
2882273c | 124 | fStreamInputReader = streamInputReader; |
866e5b51 | 125 | |
6bdc9fac | 126 | /* Set the BitBuffer's byte order. */ |
6c7592e1 MK |
127 | ByteBuffer allocateDirect = ByteBuffer.allocateDirect(0); |
128 | if (allocateDirect == null) { | |
129 | throw new IllegalStateException("Unable to allocate 0 bytes!"); //$NON-NLS-1$ | |
130 | } | |
131 | fBitBuffer = new BitBuffer(allocateDirect); | |
33656d8e | 132 | |
d84419e1 | 133 | final CTFStream currentStream = streamInputReader.getStreamInput().getStream(); |
a4fa4e36 MK |
134 | fTracePacketHeaderDecl = currentStream.getTrace().getPacketHeader(); |
135 | fStreamPacketContextDecl = currentStream.getPacketContextDecl(); | |
6c7592e1 | 136 | fStreamEventHeaderDecl = currentStream.getEventHeaderDeclaration(); |
a4fa4e36 MK |
137 | fStreamEventContextDecl = currentStream.getEventContextDecl(); |
138 | } | |
6bdc9fac | 139 | |
a4fa4e36 MK |
140 | /** |
141 | * Get the event context defintiion | |
142 | * | |
143 | * @param input | |
144 | * the bitbuffer to read from | |
145 | * @return an context definition, can be null | |
680f9173 | 146 | * @throws CTFException |
a4fa4e36 | 147 | * out of bounds exception or such |
a4fa4e36 | 148 | */ |
680f9173 | 149 | public StructDefinition getEventContextDefinition(@NonNull BitBuffer input) throws CTFException { |
fbe6fa6f | 150 | return fStreamEventContextDecl.createDefinition(fStreamInputReader.getStreamInput(), ILexicalScope.STREAM_EVENT_CONTEXT, input); |
a4fa4e36 | 151 | } |
6bdc9fac | 152 | |
a4fa4e36 MK |
153 | /** |
154 | * Get the packet context defintiion | |
155 | * | |
156 | * @param input | |
157 | * the bitbuffer to read from | |
158 | * @return an context definition, can be null | |
680f9173 | 159 | * @throws CTFException |
a4fa4e36 | 160 | * out of bounds exception or such |
a4fa4e36 | 161 | */ |
680f9173 | 162 | public StructDefinition getStreamPacketContextDefinition(@NonNull BitBuffer input) throws CTFException { |
fbe6fa6f | 163 | return fStreamPacketContextDecl.createDefinition(fStreamInputReader.getStreamInput(), ILexicalScope.STREAM_PACKET_CONTEXT, input); |
a4fa4e36 | 164 | } |
6bdc9fac | 165 | |
a4fa4e36 MK |
166 | /** |
167 | * Get the event header defintiion | |
168 | * | |
169 | * @param input | |
170 | * the bitbuffer to read from | |
171 | * @return an header definition, can be null | |
680f9173 | 172 | * @throws CTFException |
a4fa4e36 | 173 | * out of bounds exception or such |
a4fa4e36 | 174 | */ |
680f9173 | 175 | public StructDefinition getTracePacketHeaderDefinition(@NonNull BitBuffer input) throws CTFException { |
fbe6fa6f | 176 | return fTracePacketHeaderDecl.createDefinition(fStreamInputReader.getStreamInput().getStream().getTrace(), ILexicalScope.TRACE_PACKET_HEADER, input); |
6bdc9fac | 177 | } |
866e5b51 | 178 | |
5d1c6919 PT |
179 | /** |
180 | * Dispose the StreamInputPacketReader | |
5d1c6919 | 181 | */ |
dd9752d5 AM |
182 | @Override |
183 | public void close() { | |
733c614c | 184 | fBitBuffer = null; |
5d1c6919 PT |
185 | } |
186 | ||
866e5b51 FC |
187 | // ------------------------------------------------------------------------ |
188 | // Getters/Setters/Predicates | |
189 | // ------------------------------------------------------------------------ | |
190 | ||
9ac2eb62 MK |
191 | /** |
192 | * Gets the current packet | |
193 | * | |
194 | * @return the current packet | |
195 | */ | |
1d92f045 | 196 | ICTFPacketDescriptor getCurrentPacket() { |
2882273c | 197 | return fCurrentPacket; |
866e5b51 FC |
198 | } |
199 | ||
9ac2eb62 MK |
200 | /** |
201 | * Gets the CPU (core) number | |
202 | * | |
203 | * @return the CPU (core) number | |
204 | */ | |
866e5b51 | 205 | public int getCPU() { |
2882273c | 206 | return fCurrentCpu; |
866e5b51 FC |
207 | } |
208 | ||
209 | @Override | |
a4fa4e36 | 210 | public LexicalScope getScopePath() { |
fbe6fa6f | 211 | return ILexicalScope.PACKET; |
866e5b51 FC |
212 | } |
213 | ||
214 | // ------------------------------------------------------------------------ | |
215 | // Operations | |
216 | // ------------------------------------------------------------------------ | |
217 | ||
b3151232 | 218 | @NonNull |
680f9173 | 219 | private ByteBuffer getByteBufferAt(long position, long size) throws CTFException, IOException { |
f4a474e3 | 220 | ByteBuffer map = SafeMappedByteBuffer.map(fStreamInputReader.getFc(), MapMode.READ_ONLY, position, size); |
b3151232 | 221 | if (map == null) { |
680f9173 | 222 | throw new CTFIOException("Failed to allocate mapped byte buffer"); //$NON-NLS-1$ |
b3151232 MK |
223 | } |
224 | return map; | |
225 | } | |
f068c622 | 226 | |
866e5b51 FC |
227 | /** |
228 | * Changes the current packet to the given one. | |
229 | * | |
230 | * @param currentPacket | |
231 | * The index entry of the packet to switch to. | |
680f9173 | 232 | * @throws CTFException |
db8e8f7d | 233 | * If we get an error reading the packet |
1d92f045 | 234 | * @since 1.0 |
866e5b51 | 235 | */ |
1d92f045 | 236 | public void setCurrentPacket(ICTFPacketDescriptor currentPacket) throws CTFException { |
2882273c | 237 | fCurrentPacket = currentPacket; |
dd7f1879 | 238 | fHasLost = false; |
866e5b51 | 239 | |
2882273c | 240 | if (fCurrentPacket != null) { |
866e5b51 FC |
241 | /* |
242 | * Change the map of the BitBuffer. | |
243 | */ | |
526c823c | 244 | ByteBuffer bb = null; |
866e5b51 | 245 | try { |
04f0148f | 246 | bb = getByteBufferAt(fCurrentPacket.getOffsetBytes(), (fCurrentPacket.getPacketSizeBits() + BITS_PER_BYTE - 1) / BITS_PER_BYTE); |
866e5b51 | 247 | } catch (IOException e) { |
680f9173 | 248 | throw new CTFIOException(e.getMessage(), e); |
866e5b51 FC |
249 | } |
250 | ||
733c614c MK |
251 | BitBuffer bitBuffer = new BitBuffer(bb); |
252 | fBitBuffer = bitBuffer; | |
866e5b51 FC |
253 | /* |
254 | * Read trace packet header. | |
255 | */ | |
a4fa4e36 | 256 | if (fTracePacketHeaderDecl != null) { |
733c614c | 257 | fCurrentTracePacketHeaderDef = getTracePacketHeaderDefinition(bitBuffer); |
866e5b51 FC |
258 | } |
259 | ||
260 | /* | |
261 | * Read stream packet context. | |
262 | */ | |
a4fa4e36 | 263 | if (fStreamPacketContextDecl != null) { |
733c614c | 264 | fCurrentStreamPacketContextDef = getStreamPacketContextDefinition(bitBuffer); |
33656d8e | 265 | |
132a02b0 | 266 | /* Read CPU ID */ |
2882273c MK |
267 | if (getCurrentPacket().getTarget() != null) { |
268 | fCurrentCpu = (int) getCurrentPacket().getTargetId(); | |
866e5b51 | 269 | } |
21fb02fa | 270 | |
132a02b0 | 271 | /* Read number of lost events */ |
2882273c MK |
272 | fLostEventsInThisPacket = (int) getCurrentPacket().getLostEvents(); |
273 | if (fLostEventsInThisPacket != 0) { | |
274 | fHasLost = true; | |
c26d0fe0 | 275 | } |
866e5b51 FC |
276 | } |
277 | ||
278 | /* | |
279 | * Use the timestamp begin of the packet as the reference for the | |
280 | * timestamp reconstitution. | |
281 | */ | |
5b341dc8 | 282 | fLastTimestamp = Math.max(currentPacket.getTimestampBegin(), 0); |
866e5b51 | 283 | } else { |
733c614c | 284 | fBitBuffer = null; |
2882273c | 285 | fLastTimestamp = 0; |
866e5b51 FC |
286 | } |
287 | } | |
288 | ||
289 | /** | |
290 | * Returns whether it is possible to read any more events from this packet. | |
291 | * | |
292 | * @return True if it is possible to read any more events from this packet. | |
293 | */ | |
294 | public boolean hasMoreEvents() { | |
733c614c | 295 | BitBuffer bitBuffer = fBitBuffer; |
1d92f045 | 296 | ICTFPacketDescriptor currentPacket = fCurrentPacket; |
733c614c MK |
297 | if (currentPacket != null && bitBuffer != null) { |
298 | return fHasLost || (bitBuffer.position() < currentPacket.getContentSizeBits()); | |
866e5b51 FC |
299 | } |
300 | return false; | |
301 | } | |
302 | ||
303 | /** | |
304 | * Reads the next event of the packet into the right event definition. | |
305 | * | |
306 | * @return The event definition containing the event data that was just | |
307 | * read. | |
680f9173 | 308 | * @throws CTFException |
be6df2d8 | 309 | * If there was a problem reading the trace |
866e5b51 | 310 | */ |
680f9173 | 311 | public EventDefinition readNextEvent() throws CTFException { |
1fbaecd1 | 312 | /* Default values for those fields */ |
5f715709 | 313 | // compromise since we cannot have 64 bit addressing of arrays yet. |
a433ce7d | 314 | int eventID = (int) IEventDeclaration.UNSET_EVENT_ID; |
74d58b9b PT |
315 | final BitBuffer currentBitBuffer = fBitBuffer; |
316 | final ICTFPacketDescriptor currentPacket = fCurrentPacket; | |
317 | if (currentBitBuffer == null || currentPacket == null) { | |
318 | return null; | |
319 | } | |
320 | final long posStart = currentBitBuffer.position(); | |
321 | /* | |
322 | * Return the Lost Event after all other events in this packet. | |
323 | */ | |
324 | if (fHasLost && posStart >= currentPacket.getContentSizeBits()) { | |
2882273c | 325 | fHasLost = false; |
a433ce7d | 326 | IEventDeclaration lostEventDeclaration = LostEventDeclaration.INSTANCE; |
a4fa4e36 MK |
327 | StructDeclaration lostFields = lostEventDeclaration.getFields(); |
328 | // this is a hard coded map, we know it's not null | |
2db699c2 | 329 | IntegerDeclaration lostFieldsDecl = (IntegerDeclaration) lostFields.getField(CTFStrings.LOST_EVENTS_FIELD); |
a4fa4e36 MK |
330 | if (lostFieldsDecl == null) |
331 | { | |
332 | throw new IllegalStateException("Lost events count not declared!"); //$NON-NLS-1$ | |
333 | } | |
2db699c2 | 334 | IntegerDeclaration lostEventsDurationDecl = (IntegerDeclaration) lostFields.getField(CTFStrings.LOST_EVENTS_DURATION); |
a4fa4e36 MK |
335 | if (lostEventsDurationDecl == null) { |
336 | throw new IllegalStateException("Lost events duration not declared!"); //$NON-NLS-1$ | |
337 | } | |
74d58b9b PT |
338 | long lostEventsTimestamp = fLastTimestamp; |
339 | long lostEventsDuration = currentPacket.getTimestampEnd() - lostEventsTimestamp; | |
340 | IntegerDefinition lostDurationDef = new IntegerDefinition(lostFieldsDecl, null, CTFStrings.LOST_EVENTS_DURATION, lostEventsDuration); | |
a4fa4e36 MK |
341 | IntegerDefinition lostCountDef = new IntegerDefinition(lostEventsDurationDecl, null, CTFStrings.LOST_EVENTS_FIELD, fLostEventsInThisPacket); |
342 | IntegerDefinition[] fields = new IntegerDefinition[] { lostCountDef, lostDurationDef }; | |
a4fa4e36 MK |
343 | return new EventDefinition( |
344 | lostEventDeclaration, | |
345 | fStreamInputReader, | |
74d58b9b | 346 | lostEventsTimestamp, |
a4fa4e36 MK |
347 | null, |
348 | null, | |
349 | null, | |
350 | new StructDefinition( | |
351 | lostFields, | |
352 | this, "fields", //$NON-NLS-1$ | |
a4fa4e36 MK |
353 | fields |
354 | )); | |
355 | ||
33656d8e | 356 | } |
132a02b0 | 357 | |
1fbaecd1 | 358 | /* Read the stream event header. */ |
a4fa4e36 | 359 | if (fStreamEventHeaderDecl != null) { |
6c7592e1 | 360 | if (fStreamEventHeaderDecl instanceof IEventHeaderDeclaration) { |
94c255ef | 361 | fCurrentStreamEventHeaderDef = (ICompositeDefinition) fStreamEventHeaderDecl.createDefinition(EVENT_HEADER_SCOPE, "", currentBitBuffer); //$NON-NLS-1$ |
6c7592e1 MK |
362 | EventHeaderDefinition ehd = (EventHeaderDefinition) fCurrentStreamEventHeaderDef; |
363 | eventID = ehd.getId(); | |
6c7592e1 | 364 | } else { |
94c255ef | 365 | fCurrentStreamEventHeaderDef = ((StructDeclaration) fStreamEventHeaderDecl).createDefinition(EVENT_HEADER_SCOPE, ILexicalScope.EVENT_HEADER, currentBitBuffer); |
6c7592e1 MK |
366 | StructDefinition StructEventHeaderDef = (StructDefinition) fCurrentStreamEventHeaderDef; |
367 | /* Check for the event id. */ | |
368 | IDefinition idDef = StructEventHeaderDef.lookupDefinition("id"); //$NON-NLS-1$ | |
369 | SimpleDatatypeDefinition simpleIdDef = null; | |
370 | if (idDef instanceof SimpleDatatypeDefinition) { | |
371 | simpleIdDef = ((SimpleDatatypeDefinition) idDef); | |
372 | } else if (idDef != null) { | |
680f9173 | 373 | throw new CTFIOException("Id defintion not an integer, enum or float definiton in event header."); //$NON-NLS-1$ |
6c7592e1 | 374 | } |
6c7592e1 MK |
375 | /* Check for the variant v. */ |
376 | IDefinition variantDef = StructEventHeaderDef.lookupDefinition("v"); //$NON-NLS-1$ | |
377 | if (variantDef instanceof VariantDefinition) { | |
866e5b51 | 378 | |
6c7592e1 MK |
379 | /* Get the variant current field */ |
380 | StructDefinition variantCurrentField = (StructDefinition) ((VariantDefinition) variantDef).getCurrentField(); | |
866e5b51 | 381 | |
6c7592e1 MK |
382 | /* |
383 | * Try to get the id field in the current field of the | |
384 | * variant. If it is present, it overrides the previously | |
385 | * read event id. | |
386 | */ | |
387 | IDefinition vIdDef = variantCurrentField.lookupDefinition("id"); //$NON-NLS-1$ | |
388 | if (vIdDef instanceof IntegerDefinition) { | |
389 | simpleIdDef = (SimpleDatatypeDefinition) vIdDef; | |
390 | } | |
866e5b51 | 391 | |
6bdc9fac | 392 | } |
6c7592e1 | 393 | if (simpleIdDef != null) { |
5f715709 | 394 | eventID = simpleIdDef.getIntegerValue().intValue(); |
6c7592e1 | 395 | } |
21fb02fa | 396 | } |
866e5b51 | 397 | } |
1fbaecd1 | 398 | /* Get the right event definition using the event id. */ |
94c255ef | 399 | EventDeclaration eventDeclaration = (EventDeclaration) fStreamInputReader.getStreamInput().getStream().getEventDeclaration(eventID); |
a4fa4e36 | 400 | if (eventDeclaration == null) { |
680f9173 | 401 | throw new CTFIOException("Incorrect event id : " + eventID); //$NON-NLS-1$ |
866e5b51 | 402 | } |
5b341dc8 MK |
403 | EventDefinition eventDef = eventDeclaration.createDefinition(fStreamInputReader, fCurrentStreamEventHeaderDef, currentBitBuffer, fLastTimestamp); |
404 | fLastTimestamp = eventDef.getTimestamp(); | |
866e5b51 FC |
405 | /* |
406 | * Set the event timestamp using the timestamp calculated by | |
407 | * updateTimestamp. | |
408 | */ | |
866e5b51 | 409 | |
cf9a28da | 410 | if (posStart == currentBitBuffer.position()) { |
680f9173 | 411 | throw new CTFIOException("Empty event not allowed, event: " + eventDef.getDeclaration().getName()); //$NON-NLS-1$ |
cf9a28da MK |
412 | } |
413 | ||
866e5b51 FC |
414 | return eventDef; |
415 | } | |
416 | ||
866e5b51 FC |
417 | @Override |
418 | public Definition lookupDefinition(String lookupPath) { | |
fbe6fa6f | 419 | if (lookupPath.equals(ILexicalScope.STREAM_PACKET_CONTEXT.getPath())) { |
6c7592e1 | 420 | return (Definition) fCurrentStreamPacketContextDef; |
a4fa4e36 | 421 | } |
fbe6fa6f | 422 | if (lookupPath.equals(ILexicalScope.TRACE_PACKET_HEADER.getPath())) { |
6c7592e1 | 423 | return (Definition) fCurrentTracePacketHeaderDef; |
a4fa4e36 | 424 | } |
866e5b51 FC |
425 | return null; |
426 | } | |
a4fa4e36 | 427 | |
6c7592e1 MK |
428 | |
429 | /** | |
430 | * Get stream event header | |
431 | * | |
432 | * @return the stream event header | |
6c7592e1 MK |
433 | */ |
434 | public ICompositeDefinition getStreamEventHeaderDefinition() { | |
a4fa4e36 MK |
435 | return fCurrentStreamEventHeaderDef; |
436 | } | |
437 | ||
438 | /** | |
439 | * Get the current packet event header | |
440 | * | |
441 | * @return the current packet event header | |
a4fa4e36 MK |
442 | */ |
443 | public StructDefinition getCurrentPacketEventHeader() { | |
6c7592e1 MK |
444 | if (fCurrentTracePacketHeaderDef instanceof StructDefinition) { |
445 | return (StructDefinition) fCurrentTracePacketHeaderDef; | |
446 | } | |
447 | return null; | |
a4fa4e36 | 448 | } |
866e5b51 | 449 | } |