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d18dd09b | 1 | /******************************************************************************* |
e31e01e8 | 2 | * Copyright (c) 2009, 2010 Ericsson |
d18dd09b ASL |
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.trace; | |
14 | ||
15 | import java.io.FileNotFoundException; | |
16 | import java.io.IOException; | |
17 | import java.io.RandomAccessFile; | |
18 | ||
19 | import org.eclipse.linuxtools.tmf.event.TmfEvent; | |
e31e01e8 | 20 | import org.eclipse.linuxtools.tmf.parser.ITmfEventParser; |
d18dd09b ASL |
21 | |
22 | /** | |
23 | * <b><u>TmfTraceStub</u></b> | |
24 | * <p> | |
8d2e2848 | 25 | * Dummy test trace. Use in conjunction with TmfEventParserStub. |
d18dd09b | 26 | */ |
e31e01e8 | 27 | public class TmfTraceStub extends TmfTrace<TmfEvent> { |
d18dd09b | 28 | |
e31e01e8 | 29 | // ------------------------------------------------------------------------ |
d18dd09b | 30 | // Attributes |
e31e01e8 | 31 | // ------------------------------------------------------------------------ |
d18dd09b ASL |
32 | |
33 | // The actual stream | |
146a887c | 34 | private final RandomAccessFile fTrace; |
d18dd09b ASL |
35 | |
36 | // The associated event parser | |
146a887c | 37 | private final ITmfEventParser fParser; |
d18dd09b | 38 | |
e31e01e8 | 39 | // ------------------------------------------------------------------------ |
d18dd09b | 40 | // Constructors |
e31e01e8 | 41 | // ------------------------------------------------------------------------ |
d18dd09b ASL |
42 | |
43 | /** | |
44 | * @param filename | |
45 | * @throws FileNotFoundException | |
46 | */ | |
47 | public TmfTraceStub(String filename) throws FileNotFoundException { | |
8d2e2848 FC |
48 | this(filename, DEFAULT_CACHE_SIZE, false); |
49 | } | |
50 | ||
51 | /** | |
52 | * @param filename | |
e31e01e8 | 53 | * @param cacheSize |
8d2e2848 FC |
54 | * @throws FileNotFoundException |
55 | */ | |
e31e01e8 FC |
56 | public TmfTraceStub(String filename, int cacheSize) throws FileNotFoundException { |
57 | this(filename, cacheSize, false); | |
d18dd09b ASL |
58 | } |
59 | ||
60 | /** | |
61 | * @param filename | |
d18dd09b ASL |
62 | * @throws FileNotFoundException |
63 | */ | |
e31e01e8 FC |
64 | public TmfTraceStub(String filename, boolean waitForCompletion) throws FileNotFoundException { |
65 | this(filename, DEFAULT_CACHE_SIZE, waitForCompletion); | |
8d2e2848 FC |
66 | } |
67 | ||
68 | /** | |
69 | * @param filename | |
70 | * @param cacheSize | |
71 | * @throws FileNotFoundException | |
72 | */ | |
73 | public TmfTraceStub(String filename, int cacheSize, boolean waitForCompletion) throws FileNotFoundException { | |
e31e01e8 | 74 | super(TmfEvent.class, filename, cacheSize); |
d18dd09b ASL |
75 | fTrace = new RandomAccessFile(filename, "r"); |
76 | fParser = new TmfEventParserStub(); | |
e31e01e8 | 77 | indexTrace(waitForCompletion); |
d18dd09b ASL |
78 | } |
79 | ||
e31e01e8 | 80 | // ------------------------------------------------------------------------ |
d18dd09b | 81 | // Accessors |
e31e01e8 | 82 | // ------------------------------------------------------------------------ |
d18dd09b ASL |
83 | |
84 | public RandomAccessFile getStream() { | |
85 | return fTrace; | |
86 | } | |
87 | ||
e31e01e8 | 88 | // ------------------------------------------------------------------------ |
d18dd09b | 89 | // Operators |
e31e01e8 | 90 | // ------------------------------------------------------------------------ |
d18dd09b | 91 | |
9f584e4c FC |
92 | @SuppressWarnings("unchecked") |
93 | public TmfContext seekLocation(ITmfLocation location) { | |
d18dd09b | 94 | try { |
4e3aa37d | 95 | synchronized(fTrace) { |
9f584e4c FC |
96 | // Position the trace at the requested location and |
97 | // returns the corresponding context | |
98 | long loc = (location != null) ? ((TmfLocation<Long>) location).getValue() : 0; | |
99 | if (loc != fTrace.getFilePointer()) { | |
100 | fTrace.seek(loc); | |
101 | } | |
102 | TmfContext context = new TmfContext(getCurrentLocation(), 0); | |
e31e01e8 | 103 | return context; |
4e3aa37d | 104 | } |
d18dd09b ASL |
105 | } catch (IOException e) { |
106 | e.printStackTrace(); | |
107 | } | |
e31e01e8 | 108 | return null; |
d18dd09b ASL |
109 | } |
110 | ||
4e3aa37d | 111 | @Override |
9f584e4c | 112 | public TmfLocation<Long> getCurrentLocation() { |
d18dd09b | 113 | try { |
9f584e4c | 114 | return new TmfLocation<Long>(fTrace.getFilePointer()); |
d18dd09b ASL |
115 | } catch (IOException e) { |
116 | e.printStackTrace(); | |
117 | } | |
118 | return null; | |
119 | } | |
120 | ||
4e3aa37d | 121 | @Override |
9f584e4c | 122 | public TmfEvent parseEvent(TmfContext context) { |
cc6eec3e | 123 | try { |
8d2e2848 FC |
124 | // paserNextEvent updates the context |
125 | TmfEvent event = fParser.parseNextEvent(this, context); | |
cc6eec3e FC |
126 | return event; |
127 | } | |
128 | catch (IOException e) { | |
129 | e.printStackTrace(); | |
130 | } | |
131 | return null; | |
d18dd09b ASL |
132 | } |
133 | ||
e31e01e8 | 134 | } |