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1 | /******************************************************************************* |
2 | * Copyright (c) 2010 Ericsson | |
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 | * Francois Chouinard - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.lttng.trace; | |
14 | ||
a79913eb FC |
15 | import org.eclipse.linuxtools.lttng.event.LttngEvent; |
16 | import org.eclipse.linuxtools.lttng.event.LttngTimestamp; | |
17 | import org.eclipse.linuxtools.lttng.jni.JniTrace; | |
82e04272 | 18 | import org.eclipse.linuxtools.tmf.event.TmfEvent; |
a79913eb | 19 | import org.eclipse.linuxtools.tmf.event.TmfTimeRange; |
82e04272 FC |
20 | import org.eclipse.linuxtools.tmf.event.TmfTimestamp; |
21 | import org.eclipse.linuxtools.tmf.experiment.TmfExperiment; | |
22 | import org.eclipse.linuxtools.tmf.experiment.TmfExperimentContext; | |
23 | import org.eclipse.linuxtools.tmf.experiment.TmfExperimentLocation; | |
a79913eb FC |
24 | import org.eclipse.linuxtools.tmf.request.ITmfDataRequest; |
25 | import org.eclipse.linuxtools.tmf.request.ITmfDataRequest.ExecutionType; | |
26 | import org.eclipse.linuxtools.tmf.request.TmfEventRequest; | |
27 | import org.eclipse.linuxtools.tmf.signal.TmfExperimentRangeUpdatedSignal; | |
28 | import org.eclipse.linuxtools.tmf.signal.TmfSignalHandler; | |
82e04272 FC |
29 | import org.eclipse.linuxtools.tmf.signal.TmfSignalManager; |
30 | import org.eclipse.linuxtools.tmf.trace.ITmfTrace; | |
31 | import org.eclipse.linuxtools.tmf.trace.TmfContext; | |
32 | ||
33 | /** | |
34 | * <b><u>LTTngExperiment</u></b> | |
35 | * <p> | |
36 | * Temporary class to resolve a basic incompatibility between TMF and LTTng. | |
37 | * <p> | |
38 | */ | |
12c155f5 | 39 | public class LTTngExperiment<T extends TmfEvent> extends TmfExperiment<T> { |
82e04272 | 40 | |
a79913eb | 41 | private static final int DEFAULT_INDEX_PAGE_SIZE = 50000; |
82e04272 | 42 | |
a79913eb | 43 | // ------------------------------------------------------------------------ |
82e04272 FC |
44 | // Constructors |
45 | // ------------------------------------------------------------------------ | |
46 | ||
47 | /** | |
48 | * @param type | |
49 | * @param id | |
50 | * @param traces | |
51 | * @param epoch | |
52 | * @param indexPageSize | |
53 | */ | |
12c155f5 | 54 | public LTTngExperiment(Class<T> type, String id, ITmfTrace<T>[] traces, TmfTimestamp epoch, int indexPageSize) { |
82e04272 | 55 | this(type, id, traces, TmfTimestamp.Zero, indexPageSize, false); |
a79913eb | 56 | } |
82e04272 | 57 | |
12c155f5 | 58 | public LTTngExperiment(Class<T> type, String id, ITmfTrace<T>[] traces, TmfTimestamp epoch, int indexPageSize, boolean preIndexExperiment) { |
a79913eb FC |
59 | super(type, id, traces, epoch, indexPageSize, preIndexExperiment); |
60 | } | |
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61 | |
62 | /** | |
63 | * @param type | |
64 | * @param id | |
65 | * @param traces | |
66 | */ | |
12c155f5 | 67 | public LTTngExperiment(Class<T> type, String id, ITmfTrace<T>[] traces) { |
82e04272 FC |
68 | this(type, id, traces, TmfTimestamp.Zero, DEFAULT_INDEX_PAGE_SIZE); |
69 | } | |
70 | ||
71 | /** | |
72 | * @param type | |
73 | * @param id | |
74 | * @param traces | |
75 | * @param indexPageSize | |
76 | */ | |
12c155f5 | 77 | public LTTngExperiment(Class<T> type, String id, ITmfTrace<T>[] traces, int indexPageSize) { |
82e04272 FC |
78 | this(type, id, traces, TmfTimestamp.Zero, indexPageSize); |
79 | } | |
a79913eb | 80 | |
12c155f5 | 81 | @SuppressWarnings("unchecked") |
82e04272 | 82 | public LTTngExperiment(LTTngExperiment<T> other) { |
a79913eb FC |
83 | super(other.getName() + "(clone)", other.fType); //$NON-NLS-1$ |
84 | ||
85 | fEpoch = other.fEpoch; | |
86 | fIndexPageSize = other.fIndexPageSize; | |
87 | ||
88 | fTraces = new ITmfTrace[other.fTraces.length]; | |
89 | for (int trace = 0; trace < other.fTraces.length; trace++) { | |
12c155f5 | 90 | fTraces[trace] = other.fTraces[trace].copy(); |
a79913eb FC |
91 | } |
92 | ||
93 | fNbEvents = other.fNbEvents; | |
94 | fTimeRange = other.fTimeRange; | |
95 | } | |
96 | ||
97 | @Override | |
12c155f5 | 98 | public LTTngExperiment<T> copy() { |
a79913eb FC |
99 | LTTngExperiment<T> experiment = new LTTngExperiment<T>(this); |
100 | TmfSignalManager.deregister(experiment); | |
101 | return experiment; | |
82e04272 | 102 | } |
a79913eb FC |
103 | |
104 | // ------------------------------------------------------------------------ | |
82e04272 FC |
105 | // ITmfTrace trace positioning |
106 | // ------------------------------------------------------------------------ | |
107 | ||
a79913eb FC |
108 | @Override |
109 | public synchronized TmfEvent getNextEvent(TmfContext context) { | |
82e04272 | 110 | |
a79913eb FC |
111 | // Validate the context |
112 | if (!(context instanceof TmfExperimentContext)) { | |
113 | return null; // Throw an exception? | |
114 | } | |
82e04272 | 115 | |
a79913eb | 116 | if (!context.equals(fExperimentContext)) { |
82e04272 | 117 | // Tracer.trace("Ctx: Restoring context"); |
a79913eb FC |
118 | fExperimentContext = seekLocation(context.getLocation()); |
119 | } | |
120 | ||
121 | TmfExperimentContext expContext = (TmfExperimentContext) context; | |
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122 | |
123 | // dumpContext(expContext, true); | |
124 | ||
a79913eb FC |
125 | // If an event was consumed previously, get the next one from that trace |
126 | int lastTrace = expContext.getLastTrace(); | |
127 | if (lastTrace != TmfExperimentContext.NO_TRACE) { | |
128 | TmfContext traceContext = expContext.getContexts()[lastTrace]; | |
129 | expContext.getEvents()[lastTrace] = expContext.getTraces()[lastTrace].getNextEvent(traceContext); | |
130 | expContext.setLastTrace(TmfExperimentContext.NO_TRACE); | |
131 | } | |
132 | ||
133 | // Scan the candidate events and identify the "next" trace to read from | |
134 | TmfEvent eventArray[] = expContext.getEvents(); | |
135 | if (eventArray == null) { | |
136 | return null; | |
137 | } | |
138 | int trace = TmfExperimentContext.NO_TRACE; | |
139 | TmfTimestamp timestamp = TmfTimestamp.BigCrunch; | |
140 | if (eventArray.length == 1) { | |
141 | if (eventArray[0] != null) { | |
142 | timestamp = eventArray[0].getTimestamp(); | |
143 | trace = 0; | |
144 | } | |
145 | } else { | |
146 | for (int i = 0; i < eventArray.length; i++) { | |
147 | TmfEvent event = eventArray[i]; | |
148 | if (event != null && event.getTimestamp() != null) { | |
149 | TmfTimestamp otherTS = event.getTimestamp(); | |
150 | if (otherTS.compareTo(timestamp, true) < 0) { | |
151 | trace = i; | |
152 | timestamp = otherTS; | |
153 | } | |
154 | } | |
155 | } | |
156 | } | |
157 | ||
158 | // Update the experiment context and set the "next" event | |
159 | TmfEvent event = null; | |
160 | if (trace != TmfExperimentContext.NO_TRACE) { | |
82e04272 FC |
161 | // updateIndex(expContext, timestamp); |
162 | ||
a79913eb FC |
163 | TmfContext traceContext = expContext.getContexts()[trace]; |
164 | TmfExperimentLocation expLocation = (TmfExperimentLocation) expContext.getLocation(); | |
165 | expLocation.getLocation().locations[trace] = traceContext.getLocation(); | |
82e04272 | 166 | |
a79913eb | 167 | updateIndex(expContext, timestamp); |
82e04272 | 168 | |
a79913eb FC |
169 | expLocation.getRanks()[trace] = traceContext.getRank(); |
170 | expContext.setLastTrace(trace); | |
171 | expContext.updateRank(1); | |
172 | event = expContext.getEvents()[trace]; | |
173 | fExperimentContext = expContext; | |
174 | } | |
82e04272 FC |
175 | |
176 | // if (event != null) { | |
177 | // Tracer.trace("Exp: " + (expContext.getRank() - 1) + ": " + event.getTimestamp().toString()); | |
178 | // dumpContext(expContext, false); | |
179 | // Tracer.trace("Ctx: Event returned= " + event.getTimestamp().toString()); | |
180 | // } | |
181 | ||
a79913eb FC |
182 | return event; |
183 | } | |
184 | ||
185 | @SuppressWarnings("unchecked") | |
186 | @Override | |
187 | protected void indexExperiment(final boolean waitForCompletion) { | |
188 | if (waitForCompletion) { | |
189 | TmfExperimentRangeUpdatedSignal signal = new TmfExperimentRangeUpdatedSignal(LTTngExperiment.this, LTTngExperiment.this, | |
190 | TmfTimeRange.Eternity); | |
191 | broadcast(signal); | |
192 | while (isIndexingBusy()) { | |
193 | try { | |
194 | Thread.sleep(100); | |
195 | } catch (InterruptedException e) { | |
196 | e.printStackTrace(); | |
197 | } | |
198 | } | |
199 | ; | |
200 | return; | |
201 | } | |
202 | for (ITmfTrace trace : fTraces) { | |
203 | if (trace instanceof LTTngTrace) { | |
204 | JniTrace jniTrace = ((LTTngTrace) trace).getCurrentJniTrace(); | |
205 | if (jniTrace != null && !jniTrace.isLiveTraceSupported()) { | |
206 | updateTimeRange(); | |
207 | TmfExperimentRangeUpdatedSignal signal = new TmfExperimentRangeUpdatedSignal(LTTngExperiment.this, LTTngExperiment.this, | |
208 | getTimeRange()); | |
209 | broadcast(signal); | |
210 | return; | |
211 | } | |
212 | } | |
213 | } | |
214 | final Thread thread = new Thread("Streaming Monitor for " + getName()) { //$NON-NLS-1$ | |
215 | LttngTimestamp safeTimestamp = null; | |
216 | TmfTimeRange timeRange = null; | |
82e04272 | 217 | |
a79913eb FC |
218 | @Override |
219 | public void run() { | |
220 | while (!fExecutor.isShutdown()) { | |
221 | final TmfEventRequest<LttngEvent> request = new TmfEventRequest<LttngEvent>(LttngEvent.class, TmfTimeRange.Eternity, 0, | |
222 | ExecutionType.FOREGROUND) { | |
223 | @Override | |
224 | public void handleCompleted() { | |
225 | super.handleCompleted(); | |
226 | if (isIndexingBusy()) { | |
227 | timeRange = null; | |
228 | return; | |
229 | } | |
230 | long startTime = Long.MAX_VALUE; | |
231 | long endTime = Long.MIN_VALUE; | |
232 | for (ITmfTrace trace : getTraces()) { | |
233 | if (trace instanceof LTTngTrace) { | |
234 | LTTngTrace lttngTrace = (LTTngTrace) trace; | |
235 | JniTrace jniTrace = lttngTrace.getCurrentJniTrace(); | |
236 | jniTrace.updateTrace(); | |
74237cc3 | 237 | startTime = Math.min(startTime, lttngTrace.getStartTime().getValue()); |
a79913eb FC |
238 | endTime = Math.max(endTime, jniTrace.getEndTime().getTime()); |
239 | } | |
240 | } | |
241 | LttngTimestamp startTimestamp = new LttngTimestamp(startTime); | |
242 | LttngTimestamp endTimestamp = new LttngTimestamp(endTime); | |
243 | if (safeTimestamp != null && safeTimestamp.compareTo(getTimeRange().getEndTime(), false) > 0) { | |
244 | timeRange = new TmfTimeRange(startTimestamp, safeTimestamp); | |
245 | } else { | |
246 | timeRange = null; | |
247 | } | |
248 | safeTimestamp = endTimestamp; | |
249 | } | |
250 | }; | |
251 | try { | |
252 | sendRequest((ITmfDataRequest<T>) request); | |
253 | request.waitForCompletion(); | |
b626c6f7 | 254 | if (timeRange != null && !timeRange.equals(TmfTimeRange.Null)) { |
a79913eb FC |
255 | TmfExperimentRangeUpdatedSignal signal = new TmfExperimentRangeUpdatedSignal(LTTngExperiment.this, LTTngExperiment.this, |
256 | timeRange); | |
257 | broadcast(signal); | |
258 | } | |
74237cc3 | 259 | Thread.sleep(2000); |
a79913eb FC |
260 | } catch (InterruptedException e) { |
261 | e.printStackTrace(); | |
262 | } | |
263 | } | |
264 | } | |
265 | }; | |
266 | thread.start(); | |
267 | } | |
268 | ||
269 | @TmfSignalHandler | |
270 | public void experimentRangeUpdated(TmfExperimentRangeUpdatedSignal signal) { | |
271 | indexExperiment(false, (int) fNbEvents, signal.getRange()); | |
272 | } | |
273 | ||
274 | /* | |
275 | * (non-Javadoc) | |
276 | * | |
277 | * @see java.lang.Object#toString() | |
278 | */ | |
279 | @Override | |
3b38ea61 | 280 | @SuppressWarnings("nls") |
a79913eb FC |
281 | public String toString() { |
282 | return "[LTTngExperiment (" + getName() + ")]"; | |
283 | } | |
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284 | |
285 | } |