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1 | /******************************************************************************* |
2 | * Copyright (c) 2016 EfficiOS Inc., Alexandre Montplaisir | |
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 | ||
10 | package org.eclipse.tracecompass.tmf.ctf.core.tests.trace; | |
11 | ||
12 | import static org.junit.Assert.assertEquals; | |
13 | import static org.junit.Assert.assertNotNull; | |
14 | import static org.junit.Assert.assertNull; | |
15 | import static org.junit.Assert.assertNotEquals; | |
16 | ||
17 | import java.util.function.Predicate; | |
18 | ||
19 | import org.eclipse.jdt.annotation.NonNull; | |
20 | import org.eclipse.tracecompass.testtraces.ctf.CtfTestTrace; | |
21 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; | |
22 | import org.eclipse.tracecompass.tmf.core.trace.ITmfContext; | |
23 | import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace; | |
24 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; | |
25 | import org.eclipse.tracecompass.tmf.ctf.core.tests.shared.CtfTmfTestTraceUtils; | |
26 | import org.junit.After; | |
27 | import org.junit.Before; | |
28 | import org.junit.Test; | |
29 | ||
30 | /** | |
31 | * Tests for the event-searching methods in {@link TmfTraceUtils}. | |
32 | * | |
33 | * @author Alexandre Montplaisir | |
34 | */ | |
35 | public class TmfTraceUtilsSearchingTest { | |
36 | ||
37 | private static final @NonNull CtfTestTrace TEST_TRACE = CtfTestTrace.TRACE2; | |
38 | private static final long START_RANK = 500L; | |
39 | ||
40 | private ITmfTrace fTrace; | |
41 | private ITmfEvent fStartEvent; | |
42 | ||
43 | /** | |
44 | * Test setup | |
45 | */ | |
46 | @Before | |
47 | public void setUp() { | |
48 | fTrace = CtfTmfTestTraceUtils.getTrace(TEST_TRACE); | |
49 | ||
50 | ITmfContext ctx = fTrace.seekEvent(START_RANK); | |
51 | fStartEvent = fTrace.getNext(ctx); | |
52 | assertEquals("softirq_raise", fStartEvent.getName()); | |
53 | } | |
54 | ||
55 | /** | |
56 | * Test cleanup | |
57 | */ | |
58 | @After | |
59 | public void tearDown() { | |
60 | if (fTrace != null) { | |
61 | fTrace.dispose(); | |
62 | } | |
63 | } | |
64 | ||
65 | /** | |
66 | * Test the {@link TmfTraceUtils#getNextEventMatching} method. | |
67 | */ | |
68 | @Test | |
69 | public void testNextMatchingEvent() { | |
70 | ITmfTrace trace = fTrace; | |
71 | assertNotNull(trace); | |
72 | ||
73 | Predicate<@NonNull ITmfEvent> predicate = event -> event.getName().equals("sched_switch"); | |
74 | ||
75 | ITmfEvent actualEvent = TmfTraceUtils.getNextEventMatching(trace, START_RANK, predicate); | |
76 | ||
77 | ITmfContext ctx = trace.seekEvent(508L); // following sched_switch event | |
78 | ITmfEvent expectedEvent = trace.getNext(ctx); | |
79 | ||
80 | assertEquals(expectedEvent, actualEvent); | |
81 | } | |
82 | ||
83 | /** | |
84 | * Test the {@link TmfTraceUtils#getNextEventMatching} method, where the | |
85 | * event from which we start the search already matches the criterion (it | |
86 | * should be correctly skipped so we can advance). | |
87 | */ | |
88 | @Test | |
89 | public void testNextMatchingEventStartMatches() { | |
90 | ITmfTrace trace = fTrace; | |
91 | assertNotNull(trace); | |
92 | ||
93 | Predicate<@NonNull ITmfEvent> predicate = event -> event.getName().equals("softirq_raise"); | |
94 | ITmfEvent foundEvent = TmfTraceUtils.getNextEventMatching(trace, START_RANK, predicate); | |
95 | ||
96 | assertNotNull(foundEvent); | |
97 | assertNotEquals(fStartEvent, foundEvent); | |
98 | } | |
99 | ||
100 | /** | |
101 | * Test the {@link TmfTraceUtils#getPreviousEventMatching} method. | |
102 | */ | |
103 | @Test | |
104 | public void testPreviousMatchingEvent() { | |
105 | ITmfTrace trace = fTrace; | |
106 | assertNotNull(trace); | |
107 | ||
108 | Predicate<@NonNull ITmfEvent> predicate = event -> event.getName().equals("sched_switch"); | |
109 | ||
110 | ITmfEvent actualEvent = TmfTraceUtils.getPreviousEventMatching(trace, START_RANK, predicate); | |
111 | ||
112 | ITmfContext ctx = trace.seekEvent(455L); // previous sched_switch event | |
113 | ITmfEvent expectedEvent = trace.getNext(ctx); | |
114 | ||
115 | assertEquals(expectedEvent, actualEvent); | |
116 | } | |
117 | ||
118 | /** | |
119 | * Test the {@link TmfTraceUtils#getPreviousEventMatching} method, where the | |
120 | * event from which we start the search already matches the criterion (it | |
121 | * should be correctly skipped). | |
122 | */ | |
123 | @Test | |
124 | public void testPreviousMatchingEventStartMatches() { | |
125 | ITmfTrace trace = fTrace; | |
126 | assertNotNull(trace); | |
127 | ||
128 | Predicate<@NonNull ITmfEvent> predicate = event -> event.getName().equals("softirq_raise"); | |
129 | ITmfEvent foundEvent = TmfTraceUtils.getPreviousEventMatching(trace, START_RANK, predicate); | |
130 | ||
131 | assertNotNull(foundEvent); | |
132 | assertNotEquals(fStartEvent, foundEvent); | |
133 | } | |
134 | ||
135 | /** | |
136 | * Test the {@link TmfTraceUtils#getPreviousEventMatching} method with an | |
137 | * event that is expected to take more than one inner request. | |
138 | */ | |
139 | @Test | |
140 | public void testPreviousMatchingEventFar() { | |
141 | ITmfTrace trace = fTrace; | |
142 | assertNotNull(trace); | |
143 | ||
144 | Predicate<@NonNull ITmfEvent> predicate = event -> event.getName().equals("sys_write"); | |
145 | ITmfEvent actualEvent = TmfTraceUtils.getPreviousEventMatching(trace, START_RANK, predicate); | |
146 | ||
147 | ITmfContext ctx = trace.seekEvent(387L); // previous sched_switch event | |
148 | ITmfEvent expectedEvent = trace.getNext(ctx); | |
149 | ||
150 | assertEquals(expectedEvent, actualEvent); | |
151 | } | |
152 | ||
153 | /** | |
154 | * When doing a backwards search near the beginning of the trace (when | |
155 | * startRank < step), make sure that we do not go beyond the start rank. | |
156 | */ | |
157 | @Test | |
158 | public void testPreviousMatchingBeginningOfTrace() { | |
159 | ITmfTrace trace = fTrace; | |
160 | assertNotNull(trace); | |
161 | ||
162 | final int startRank = 3; | |
163 | ITmfContext ctx = fTrace.seekEvent(startRank); | |
164 | ITmfEvent startEvent = fTrace.getNext(ctx); | |
165 | assertEquals("exit_syscall", startEvent.getName()); | |
166 | ||
167 | /* There is a sys_mmap at rank 6, it should not be matched! */ | |
168 | Predicate<@NonNull ITmfEvent> predicate = event -> event.getName().equals("sys_mmap"); | |
169 | ITmfEvent foundEvent = TmfTraceUtils.getPreviousEventMatching(trace, startRank, predicate); | |
170 | assertNull(foundEvent); | |
171 | ||
172 | /* Do not match the event itself either, or any later "exit_syscall" */ | |
173 | predicate = event -> event.getName().equals("exit_syscall"); | |
174 | foundEvent = TmfTraceUtils.getPreviousEventMatching(trace, startRank, predicate); | |
175 | assertNull(foundEvent); | |
176 | } | |
177 | } |