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8c8bf09f | 1 | /******************************************************************************* |
0316808c | 2 | * Copyright (c) 2009, 2010, 2012 Ericsson |
ce2388e0 | 3 | * |
8c8bf09f ASL |
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 | |
ce2388e0 | 8 | * |
8c8bf09f ASL |
9 | * Contributors: |
10 | * Francois Chouinard - Initial API and implementation | |
3bd44ac8 | 11 | * Francois Chouinard - Put in shape for 1.0 |
8c8bf09f ASL |
12 | *******************************************************************************/ |
13 | ||
9e0640dc | 14 | package org.eclipse.linuxtools.internal.tmf.core.trace; |
8c8bf09f | 15 | |
72f1e62a | 16 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; |
34ccf9a9 | 17 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
5cc97265 | 18 | import org.eclipse.linuxtools.tmf.core.trace.ITmfLocation; |
6c13869b | 19 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; |
8c8bf09f ASL |
20 | |
21 | /** | |
0316808c | 22 | * The experiment context in TMF. |
8c8bf09f | 23 | * <p> |
cbdacf03 FC |
24 | * The experiment keeps track of the next event from each of its traces so it |
25 | * can pick the next one in chronological order. | |
8f50c396 | 26 | * <p> |
ce2388e0 FC |
27 | * This implies that the "next" event from each trace has already been |
28 | * read and that we at least know its timestamp. This doesn't imply that a | |
0316808c FC |
29 | * full parse of the event content was performed (read: the legacy LTTng works |
30 | * like this...). | |
8f50c396 | 31 | * <p> |
cbdacf03 FC |
32 | * The last trace refers to the trace from which the last event was "consumed" |
33 | * at the experiment level. | |
8c8bf09f | 34 | */ |
9b749023 | 35 | public class TmfExperimentContext extends TmfContext { |
9f584e4c | 36 | |
cbdacf03 FC |
37 | // ------------------------------------------------------------------------ |
38 | // Constants | |
39 | // ------------------------------------------------------------------------ | |
40 | ||
0316808c FC |
41 | /** |
42 | * No last trace read indicator | |
43 | */ | |
9e0640dc | 44 | public static final int NO_TRACE = -1; |
cbdacf03 FC |
45 | |
46 | // ------------------------------------------------------------------------ | |
47 | // Attributes | |
48 | // ------------------------------------------------------------------------ | |
49 | ||
03648eab | 50 | private ITmfContext[] fContexts; |
ce2388e0 | 51 | private ITmfEvent[] fEvents; |
03648eab | 52 | private int fLastTraceRead; |
cbdacf03 FC |
53 | |
54 | // ------------------------------------------------------------------------ | |
55 | // Constructors | |
56 | // ------------------------------------------------------------------------ | |
57 | ||
408e65d2 | 58 | /** |
063f0d27 AM |
59 | * Standard constructor |
60 | * | |
408e65d2 | 61 | * @param contexts |
063f0d27 | 62 | * The matching context for each trace in the experiment |
408e65d2 | 63 | */ |
0316808c | 64 | public TmfExperimentContext(final ITmfContext[] contexts) { |
cbdacf03 | 65 | super(); |
cbdacf03 | 66 | fContexts = contexts; |
0316808c | 67 | fEvents = new ITmfEvent[fContexts.length]; |
5cc97265 | 68 | final ITmfLocation<?>[] locations = new ITmfLocation[fContexts.length]; |
3bd44ac8 | 69 | |
5cc97265 | 70 | setLocation(new TmfExperimentLocation(new TmfLocationArray(locations.clone()))); |
9b749023 | 71 | |
5cc97265 | 72 | final long[] ranks = new long[fContexts.length]; |
cbdacf03 | 73 | long rank = 0; |
9b749023 | 74 | for (int i = 0; i < fContexts.length; i++) { |
cbdacf03 | 75 | if (contexts[i] != null) { |
5cc97265 FC |
76 | locations[i] = contexts[i].getLocation(); |
77 | ranks[i] = contexts[i].getRank(); | |
cbdacf03 FC |
78 | rank += contexts[i].getRank(); |
79 | } | |
9b749023 | 80 | } |
cbdacf03 | 81 | |
5cc97265 | 82 | // setLocation(new TmfExperimentLocation(new TmfLocationArray(locations))); |
cbdacf03 | 83 | setRank(rank); |
03648eab | 84 | fLastTraceRead = NO_TRACE; |
cbdacf03 FC |
85 | } |
86 | ||
408e65d2 | 87 | /** |
063f0d27 AM |
88 | * Copy constructor |
89 | * | |
408e65d2 | 90 | * @param other |
063f0d27 | 91 | * The experiment context to copy |
408e65d2 | 92 | */ |
ce2388e0 | 93 | public TmfExperimentContext(final TmfExperimentContext other) { |
0316808c | 94 | this(other.cloneContexts()); |
ce2388e0 | 95 | fEvents = other.fEvents; |
9b749023 | 96 | if (other.getLocation() != null) { |
ce2388e0 | 97 | setLocation(other.getLocation().clone()); |
9b749023 | 98 | } |
ce2388e0 | 99 | setRank(other.getRank()); |
03648eab | 100 | setLastTrace(other.fLastTraceRead); |
ce2388e0 FC |
101 | } |
102 | ||
408e65d2 FC |
103 | /* (non-Javadoc) |
104 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext#clone() | |
105 | */ | |
106 | @Override | |
107 | public TmfExperimentContext clone() { | |
108 | TmfExperimentContext clone = null; | |
109 | clone = (TmfExperimentContext) super.clone(); | |
110 | clone.fContexts = cloneContexts(); | |
111 | clone.fEvents = cloneEvents(); | |
112 | clone.fLastTraceRead = fLastTraceRead; | |
113 | return clone; | |
114 | } | |
115 | ||
ce2388e0 FC |
116 | private ITmfContext[] cloneContexts() { |
117 | final ITmfContext[] contexts = new ITmfContext[fContexts.length]; | |
9b749023 | 118 | for (int i = 0; i < fContexts.length; i++) { |
408e65d2 | 119 | contexts[i] = (fContexts[i] != null) ? fContexts[i].clone() : null; |
9b749023 | 120 | } |
ce2388e0 FC |
121 | return contexts; |
122 | } | |
123 | ||
03648eab FC |
124 | private ITmfEvent[] cloneEvents() { |
125 | final ITmfEvent[] events = new ITmfEvent[fEvents.length]; | |
9b749023 | 126 | for (int i = 0; i < fEvents.length; i++) { |
408e65d2 | 127 | events[i] = (fEvents[i] != null) ? fEvents[i].clone() : null; |
9b749023 | 128 | } |
03648eab FC |
129 | return events; |
130 | } | |
ce2388e0 | 131 | |
cbdacf03 FC |
132 | // ------------------------------------------------------------------------ |
133 | // Accessors | |
134 | // ------------------------------------------------------------------------ | |
135 | ||
063f0d27 AM |
136 | /** |
137 | * Get the trace contexts composing this experiment context. | |
138 | * | |
139 | * @return The array of trace contexts | |
140 | */ | |
cbdacf03 FC |
141 | public ITmfContext[] getContexts() { |
142 | return fContexts; | |
143 | } | |
144 | ||
063f0d27 AM |
145 | /** |
146 | * Get the trace events located at this experiment context's location. | |
147 | * | |
148 | * @return The array of trace events | |
149 | */ | |
cbdacf03 FC |
150 | public ITmfEvent[] getEvents() { |
151 | return fEvents; | |
152 | } | |
153 | ||
063f0d27 AM |
154 | /** |
155 | * Get the index of the trace that was last read (so the trace whose | |
156 | * current context will match this experiment's). | |
157 | * | |
158 | * @return The index of the trace | |
159 | */ | |
cbdacf03 | 160 | public int getLastTrace() { |
03648eab | 161 | return fLastTraceRead; |
cbdacf03 FC |
162 | } |
163 | ||
063f0d27 AM |
164 | /** |
165 | * Set the last trace read index | |
166 | * | |
167 | * @param newIndex | |
168 | * The new value to assign | |
169 | */ | |
cbdacf03 | 170 | public void setLastTrace(final int newIndex) { |
03648eab | 171 | fLastTraceRead = newIndex; |
cbdacf03 FC |
172 | } |
173 | ||
174 | // ------------------------------------------------------------------------ | |
175 | // Object | |
176 | // ------------------------------------------------------------------------ | |
550d787e FC |
177 | |
178 | @Override | |
179 | public int hashCode() { | |
cbdacf03 | 180 | int result = 17; |
0316808c | 181 | for (int i = 0; i < fContexts.length; i++) { |
cbdacf03 FC |
182 | result = 37 * result + fContexts[i].hashCode(); |
183 | } | |
184 | return result; | |
550d787e | 185 | } |
cbdacf03 | 186 | |
550d787e | 187 | @Override |
cbdacf03 | 188 | public boolean equals(final Object other) { |
9b749023 | 189 | if (this == other) { |
6e85c58d | 190 | return true; |
9b749023 AM |
191 | } |
192 | if (!super.equals(other)) { | |
6e85c58d | 193 | return false; |
9b749023 AM |
194 | } |
195 | if (!(other instanceof TmfExperimentContext)) { | |
cbdacf03 | 196 | return false; |
9b749023 | 197 | } |
cbdacf03 FC |
198 | final TmfExperimentContext o = (TmfExperimentContext) other; |
199 | boolean isEqual = true; | |
200 | int i = 0; | |
0316808c | 201 | while (isEqual && (i < fContexts.length)) { |
cbdacf03 FC |
202 | isEqual &= fContexts[i].equals(o.fContexts[i]); |
203 | i++; | |
204 | } | |
205 | return isEqual; | |
550d787e | 206 | } |
cbdacf03 | 207 | |
3bd44ac8 FC |
208 | @Override |
209 | @SuppressWarnings("nls") | |
210 | public String toString() { | |
211 | StringBuilder sb = new StringBuilder("TmfExperimentContext [\n"); | |
212 | sb.append("\tfLocation=" + getLocation() + ", fRank=" + getRank() + "\n"); | |
213 | sb.append("\tfContexts=["); | |
214 | for (int i = 0; i < fContexts.length; i++) { | |
215 | sb.append("(" + fContexts[i].getLocation() + "," + fContexts[i].getRank() + ((i < fContexts.length - 1) ? ")," : ")]\n")); | |
216 | } | |
217 | sb.append("\tfEvents=["); | |
218 | for (int i = 0; i < fEvents.length; i++) { | |
219 | ITmfEvent event = fEvents[i]; | |
220 | sb.append(((event != null) ? fEvents[i].getTimestamp() : "(null)") + ((i < fEvents.length - 1) ? "," : "]\n")); | |
221 | } | |
222 | sb.append("\tfLastTraceRead=" + fLastTraceRead + "\n"); | |
223 | sb.append("]"); | |
224 | return sb.toString(); | |
225 | } | |
226 | ||
8c8bf09f | 227 | } |