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1 | /******************************************************************************* |
2 | * Copyright (c) 2012 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 | * Matthew Khouzam - Initial implementation | |
11 | * Alexandre Montplaisir | |
12 | *******************************************************************************/ | |
13 | ||
14 | package org.eclipse.linuxtools.tmf.core.tests.ctfadaptor; | |
15 | ||
16 | import static org.junit.Assert.assertTrue; | |
17 | ||
18 | import java.util.ArrayList; | |
19 | ||
20 | import org.eclipse.core.resources.IResource; | |
21 | import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfEvent; | |
22 | import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfLightweightContext; | |
23 | import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfTrace; | |
24 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; | |
25 | import org.junit.Before; | |
26 | import org.junit.Test; | |
27 | ||
28 | /** | |
29 | * Tests for the CtfTmfLightweightContext class | |
30 | * | |
31 | * @author Matthew Khouzam | |
32 | * @version 1.1 | |
33 | */ | |
34 | public class CtfTmfLightweightContextTest { | |
35 | ||
36 | private static final String PATH = TestParams.getPath(); | |
37 | private static final long begin = 1332170682440133097L; /* Trace start time */ | |
38 | private static final long end = 1332170692664579801L; /* Trace end time */ | |
39 | ||
40 | private CtfTmfTrace fixture; | |
41 | ||
42 | private class SeekerThread extends Thread { | |
43 | long val; | |
44 | ||
45 | public void setVal(long val) { | |
46 | this.val = val; | |
47 | } | |
48 | } | |
49 | ||
50 | /** | |
51 | * Pre-test initialization | |
52 | * | |
53 | * @throws TmfTraceException | |
54 | * If the trace couldn't be init'ed, which shouldn't happen. | |
55 | */ | |
56 | @Before | |
57 | public void setUp() throws TmfTraceException { | |
58 | fixture = new CtfTmfTrace(); | |
59 | fixture.initTrace((IResource) null, PATH, CtfTmfEvent.class); | |
60 | } | |
61 | ||
62 | /** | |
63 | * Index all the events in the test trace. | |
64 | */ | |
65 | @Test | |
66 | public void testIndexing() { | |
67 | CtfTmfLightweightContext context = new CtfTmfLightweightContext(fixture); | |
68 | context.seek(0); | |
69 | ||
70 | int count = 0; | |
71 | while (fixture.getNext(context) != null) { | |
72 | count++; | |
73 | } | |
74 | assertTrue(count > 0); | |
75 | } | |
76 | ||
77 | /** | |
78 | * Context fuzzer. Use an amount of contexts greater than the size of the | |
79 | * iterator cache and have them access the trace in parallel. | |
80 | * | |
53b235e1 MK |
81 | * @throws InterruptedException |
82 | * Would fail the test | |
83 | */ | |
84 | @Test | |
54a7a54c | 85 | public void testTooManyContexts() throws InterruptedException { |
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86 | final int lwcCount = 101; |
87 | double increment = (end - begin) / lwcCount; | |
88 | final ArrayList<Long> vals = new ArrayList<Long>(); | |
89 | final ArrayList<Thread> threads = new ArrayList<Thread>(); | |
90 | final ArrayList<CtfTmfLightweightContext> tooManyContexts = new ArrayList<CtfTmfLightweightContext>(); | |
91 | ||
92 | for (double i = begin; i < end; i += increment) { | |
93 | SeekerThread thread = new SeekerThread() { | |
94 | @Override | |
95 | public void run() { | |
96 | CtfTmfLightweightContext lwc = new CtfTmfLightweightContext(fixture); | |
97 | lwc.seek(val); | |
98 | fixture.getNext(lwc); | |
99 | synchronized(fixture){ | |
132a02b0 | 100 | if (lwc.getCurrentEvent() != null) { |
58f3bc52 | 101 | vals.add(lwc.getCurrentEvent().getTimestamp().getValue()); |
132a02b0 | 102 | } |
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103 | tooManyContexts.add(lwc); |
104 | } | |
105 | } | |
106 | }; | |
107 | thread.setVal((long)i); | |
108 | threads.add(thread); | |
109 | thread.start(); | |
110 | } | |
111 | ||
112 | for( Thread t: threads){ | |
113 | t.join(); | |
114 | } | |
115 | ||
116 | for( Long val : vals){ | |
117 | assertTrue(val >= begin); | |
118 | assertTrue(val <= end); | |
119 | } | |
120 | } | |
121 | } |