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8c8bf09f ASL |
1 | /******************************************************************************* |
2 | * Copyright (c) 2009, 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.tmf.experiment; | |
14 | ||
15 | import org.eclipse.linuxtools.tmf.event.TmfEvent; | |
9f584e4c | 16 | import org.eclipse.linuxtools.tmf.trace.ITmfLocation; |
8c8bf09f | 17 | import org.eclipse.linuxtools.tmf.trace.ITmfTrace; |
9f584e4c | 18 | import org.eclipse.linuxtools.tmf.trace.TmfContext; |
8c8bf09f ASL |
19 | |
20 | /** | |
21 | * <b><u>TmfExperimentContext</u></b> | |
22 | * <p> | |
8f50c396 FC |
23 | * The experiment keeps track of the next event from each of its traces so |
24 | * it can pick the next one in chronological order. | |
25 | * <p> | |
26 | * This implies that the "next" event from each trace has already been | |
27 | * read and that we at least know its timestamp. This doesn't imply that a | |
28 | * full parse of the event content was performed (read: LTTng works like | |
29 | * this). | |
30 | * <p> | |
31 | * The last trace refers to the trace from which the last event was | |
32 | * "consumed" at the experiment level. | |
8c8bf09f | 33 | */ |
9f584e4c FC |
34 | public class TmfExperimentContext extends TmfContext { |
35 | ||
8f50c396 FC |
36 | // ------------------------------------------------------------------------ |
37 | // Constants | |
38 | // ------------------------------------------------------------------------ | |
39 | ||
40 | public static final int NO_TRACE = -1; | |
41 | ||
42 | // ------------------------------------------------------------------------ | |
43 | // Attributes | |
44 | // ------------------------------------------------------------------------ | |
45 | ||
9f584e4c FC |
46 | private ITmfTrace[] fTraces = new ITmfTrace[0]; |
47 | private TmfContext[] fContexts; | |
48 | private TmfEvent[] fEvents; | |
9b635e61 | 49 | private int lastTraceRead; |
8c8bf09f | 50 | |
9f584e4c FC |
51 | // ------------------------------------------------------------------------ |
52 | // Constructors | |
53 | // ------------------------------------------------------------------------ | |
8c8bf09f | 54 | |
9f584e4c FC |
55 | public TmfExperimentContext(ITmfTrace[] traces, TmfContext[] contexts) { |
56 | super(); | |
57 | fTraces = traces; | |
58 | fContexts = contexts; | |
8c8bf09f ASL |
59 | fEvents = new TmfEvent[fTraces.length]; |
60 | ||
452ad365 | 61 | ITmfLocation<?>[] locations = new ITmfLocation[fTraces.length]; |
8f50c396 | 62 | long[] ranks = new long[fTraces.length]; |
9f584e4c FC |
63 | long rank = 0; |
64 | for (int i = 0; i < fTraces.length; i++) { | |
65 | if (contexts[i] != null) { | |
66 | locations[i] = contexts[i].getLocation(); | |
8f50c396 | 67 | ranks[i] = contexts[i].getRank(); |
9f584e4c FC |
68 | rank += contexts[i].getRank(); |
69 | } | |
8c8bf09f | 70 | } |
9f584e4c | 71 | |
a79913eb | 72 | setLocation(new TmfExperimentLocation(new TmfLocationArray(locations), ranks)); |
9f584e4c | 73 | setRank(rank); |
9b635e61 | 74 | lastTraceRead = NO_TRACE; |
8c8bf09f ASL |
75 | } |
76 | ||
9f584e4c FC |
77 | public TmfExperimentContext(ITmfTrace[] traces) { |
78 | this(traces, new TmfContext[traces.length]); | |
8c8bf09f ASL |
79 | } |
80 | ||
9f584e4c FC |
81 | public TmfExperimentContext(TmfExperimentContext other) { |
82 | this(other.fTraces, other.cloneContexts()); | |
83 | fEvents = other.fEvents; | |
9b635e61 FC |
84 | if (other.getLocation() != null) |
85 | setLocation(other.getLocation().clone()); | |
9f584e4c | 86 | setRank(other.getRank()); |
9b635e61 | 87 | setLastTrace(other.lastTraceRead); |
8c8bf09f ASL |
88 | } |
89 | ||
9f584e4c FC |
90 | private TmfContext[] cloneContexts() { |
91 | TmfContext[] contexts = new TmfContext[fContexts.length]; | |
8c8bf09f ASL |
92 | for (int i = 0; i < fContexts.length; i++) |
93 | contexts[i] = fContexts[i].clone(); | |
94 | return contexts; | |
95 | } | |
96 | ||
9f584e4c FC |
97 | // ------------------------------------------------------------------------ |
98 | // Accessors | |
99 | // ------------------------------------------------------------------------ | |
100 | ||
101 | public ITmfTrace[] getTraces() { | |
102 | return fTraces; | |
103 | } | |
104 | ||
105 | public TmfContext[] getContexts() { | |
106 | return fContexts; | |
107 | } | |
108 | ||
8c8bf09f ASL |
109 | public TmfEvent[] getEvents() { |
110 | return fEvents; | |
111 | } | |
112 | ||
7f407ead | 113 | public int getLastTrace() { |
9b635e61 | 114 | return lastTraceRead; |
7f407ead FC |
115 | } |
116 | ||
117 | public void setLastTrace(int newIndex) { | |
9b635e61 | 118 | lastTraceRead = newIndex; |
7f407ead FC |
119 | } |
120 | ||
550d787e FC |
121 | // ------------------------------------------------------------------------ |
122 | // Object | |
123 | // ------------------------------------------------------------------------ | |
124 | ||
125 | @Override | |
126 | public int hashCode() { | |
127 | int result = 17; | |
128 | for (int i = 0; i < fTraces.length; i++) { | |
129 | result = 37 * result + fTraces[i].hashCode(); | |
130 | result = 37 * result + fContexts[i].hashCode(); | |
131 | } | |
132 | return result; | |
133 | } | |
134 | ||
135 | @Override | |
136 | public boolean equals(Object other) { | |
137 | if (!(other instanceof TmfExperimentContext)) { | |
138 | return false; | |
139 | } | |
140 | TmfExperimentContext o = (TmfExperimentContext) other; | |
141 | boolean isEqual = true; | |
142 | int i = 0; | |
143 | while (isEqual && i < fTraces.length) { | |
144 | isEqual &= fTraces[i].equals(o.fTraces[i]); | |
145 | isEqual &= fContexts[i].equals(o.fContexts[i]); | |
9b635e61 | 146 | i++; |
550d787e FC |
147 | } |
148 | return isEqual; | |
149 | } | |
150 | ||
8c8bf09f | 151 | } |