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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 | |
0316808c | 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; |
6c13869b | 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 | */ |
03648eab | 35 | public class TmfExperimentContext extends TmfContext implements Cloneable { |
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 | ||
0316808c | 58 | public TmfExperimentContext(final ITmfContext[] contexts) { |
cbdacf03 | 59 | super(); |
cbdacf03 | 60 | fContexts = contexts; |
0316808c FC |
61 | fEvents = new ITmfEvent[fContexts.length]; |
62 | final ITmfLocation<?>[] locations = new ITmfLocation[fContexts.length]; | |
63 | final long[] ranks = new long[fContexts.length]; | |
cbdacf03 | 64 | long rank = 0; |
0316808c | 65 | for (int i = 0; i < fContexts.length; i++) |
cbdacf03 FC |
66 | if (contexts[i] != null) { |
67 | locations[i] = contexts[i].getLocation(); | |
68 | ranks[i] = contexts[i].getRank(); | |
69 | rank += contexts[i].getRank(); | |
70 | } | |
71 | ||
0316808c | 72 | setLocation(new TmfExperimentLocation(new TmfLocationArray(locations))); |
cbdacf03 | 73 | setRank(rank); |
03648eab | 74 | fLastTraceRead = NO_TRACE; |
cbdacf03 FC |
75 | } |
76 | ||
ce2388e0 | 77 | public TmfExperimentContext(final TmfExperimentContext other) { |
0316808c | 78 | this(other.cloneContexts()); |
ce2388e0 FC |
79 | fEvents = other.fEvents; |
80 | if (other.getLocation() != null) | |
81 | setLocation(other.getLocation().clone()); | |
82 | setRank(other.getRank()); | |
03648eab | 83 | setLastTrace(other.fLastTraceRead); |
ce2388e0 FC |
84 | } |
85 | ||
ce2388e0 FC |
86 | private ITmfContext[] cloneContexts() { |
87 | final ITmfContext[] contexts = new ITmfContext[fContexts.length]; | |
88 | for (int i = 0; i < fContexts.length; i++) | |
89 | contexts[i] = fContexts[i].clone(); | |
90 | return contexts; | |
91 | } | |
92 | ||
03648eab FC |
93 | private ITmfEvent[] cloneEvents() { |
94 | final ITmfEvent[] events = new ITmfEvent[fEvents.length]; | |
95 | for (int i = 0; i < fEvents.length; i++) | |
96 | events[i] = fEvents[i].clone(); | |
97 | return events; | |
98 | } | |
ce2388e0 | 99 | |
03648eab FC |
100 | @Override |
101 | public TmfExperimentContext clone2() { | |
102 | TmfExperimentContext clone = null; | |
103 | clone = (TmfExperimentContext) super.clone(); | |
104 | clone.fContexts = cloneContexts(); | |
105 | clone.fEvents = cloneEvents(); | |
106 | clone.fLastTraceRead = NO_TRACE; | |
107 | return clone; | |
108 | } | |
cbdacf03 FC |
109 | |
110 | // ------------------------------------------------------------------------ | |
111 | // Accessors | |
112 | // ------------------------------------------------------------------------ | |
113 | ||
cbdacf03 FC |
114 | public ITmfContext[] getContexts() { |
115 | return fContexts; | |
116 | } | |
117 | ||
118 | public ITmfEvent[] getEvents() { | |
119 | return fEvents; | |
120 | } | |
121 | ||
122 | public int getLastTrace() { | |
03648eab | 123 | return fLastTraceRead; |
cbdacf03 FC |
124 | } |
125 | ||
126 | public void setLastTrace(final int newIndex) { | |
03648eab | 127 | fLastTraceRead = newIndex; |
cbdacf03 FC |
128 | } |
129 | ||
130 | // ------------------------------------------------------------------------ | |
131 | // Object | |
132 | // ------------------------------------------------------------------------ | |
550d787e FC |
133 | |
134 | @Override | |
135 | public int hashCode() { | |
cbdacf03 | 136 | int result = 17; |
0316808c | 137 | for (int i = 0; i < fContexts.length; i++) { |
cbdacf03 FC |
138 | result = 37 * result + fContexts[i].hashCode(); |
139 | } | |
140 | return result; | |
550d787e | 141 | } |
cbdacf03 | 142 | |
550d787e | 143 | @Override |
cbdacf03 | 144 | public boolean equals(final Object other) { |
6e85c58d FC |
145 | if (this == other) |
146 | return true; | |
147 | if (!super.equals(other)) | |
148 | return false; | |
cbdacf03 FC |
149 | if (!(other instanceof TmfExperimentContext)) |
150 | return false; | |
151 | final TmfExperimentContext o = (TmfExperimentContext) other; | |
152 | boolean isEqual = true; | |
153 | int i = 0; | |
0316808c | 154 | while (isEqual && (i < fContexts.length)) { |
cbdacf03 FC |
155 | isEqual &= fContexts[i].equals(o.fContexts[i]); |
156 | i++; | |
157 | } | |
158 | return isEqual; | |
550d787e | 159 | } |
cbdacf03 | 160 | |
8c8bf09f | 161 | } |