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1 | /******************************************************************************* |
2 | * Copyright (c) 2015 Ericsson | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are made | |
5 | * 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 | * Bernd Hufmann - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | package org.eclipse.tracecompass.internal.analysis.os.linux.core.latency.statistics; | |
13 | ||
14 | import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull; | |
15 | ||
16 | import java.util.HashMap; | |
17 | import java.util.Iterator; | |
18 | import java.util.Map; | |
19 | ||
20 | import org.eclipse.core.runtime.IProgressMonitor; | |
21 | import org.eclipse.jdt.annotation.Nullable; | |
22 | import org.eclipse.tracecompass.analysis.os.linux.core.latency.LatencyAnalysis; | |
23 | import org.eclipse.tracecompass.analysis.os.linux.core.latency.SystemCall; | |
24 | import org.eclipse.tracecompass.segmentstore.core.ISegment; | |
25 | import org.eclipse.tracecompass.segmentstore.core.ISegmentStore; | |
26 | import org.eclipse.tracecompass.tmf.core.analysis.IAnalysisModule; | |
27 | import org.eclipse.tracecompass.tmf.core.analysis.TmfAbstractAnalysisModule; | |
28 | import org.eclipse.tracecompass.tmf.core.exceptions.TmfAnalysisException; | |
29 | import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace; | |
30 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; | |
31 | ||
32 | import com.google.common.collect.ImmutableList; | |
33 | ||
34 | /** | |
35 | * Analysis module to calculate statistics of a latency analysis | |
36 | * | |
37 | * @author Bernd Hufmann | |
38 | */ | |
39 | public class LatencyStatisticsAnalysisModule extends TmfAbstractAnalysisModule { | |
40 | ||
41 | /** The analysis module ID */ | |
42 | public static String ID = "org.eclipse.tracecompass.analysis.os.linux.core.latency.statistics"; //$NON-NLS-1$ | |
43 | ||
44 | private @Nullable LatencyAnalysis fLatencyModule; | |
45 | ||
46 | private @Nullable LatencyStatistics fTotalStats; | |
47 | ||
48 | private Map<String, LatencyStatistics> fPerSyscallStats = new HashMap<>(); | |
49 | ||
50 | @Override | |
51 | protected Iterable<IAnalysisModule> getDependentAnalyses() { | |
52 | ITmfTrace trace = getTrace(); | |
53 | if (trace != null) { | |
54 | LatencyAnalysis module = TmfTraceUtils.getAnalysisModuleOfClass(trace, LatencyAnalysis.class, LatencyAnalysis.ID); | |
55 | fLatencyModule = module; | |
56 | return checkNotNull(ImmutableList.of((IAnalysisModule) module)); | |
57 | } | |
58 | return super.getDependentAnalyses(); | |
59 | } | |
60 | ||
61 | @Override | |
62 | protected boolean executeAnalysis(IProgressMonitor monitor) throws TmfAnalysisException { | |
63 | LatencyAnalysis latency = fLatencyModule; | |
64 | ITmfTrace trace = getTrace(); | |
65 | if ((latency == null) || (trace == null)) { | |
66 | return false; | |
67 | } | |
68 | latency.waitForCompletion(); | |
69 | ||
70 | ISegmentStore<ISegment> store = latency.getResults(); | |
71 | ||
72 | if (store != null) { | |
73 | ||
74 | boolean result = calculateTotalManual(store, monitor); | |
75 | ||
76 | if (!result) { | |
77 | return false; | |
78 | } | |
79 | ||
80 | result = calculateTotalPerSyscall(store, monitor); | |
81 | if (!result) { | |
82 | return false; | |
83 | } | |
84 | } | |
85 | return true; | |
86 | } | |
87 | ||
88 | private boolean calculateTotalManual(ISegmentStore<ISegment> store, IProgressMonitor monitor) { | |
89 | LatencyStatistics total = new LatencyStatistics(); | |
90 | Iterator<ISegment> iter = store.iterator(); | |
91 | while (iter.hasNext()) { | |
92 | if (monitor.isCanceled()) { | |
93 | return false; | |
94 | } | |
95 | ISegment segment = iter.next(); | |
96 | total.update(checkNotNull(segment)); | |
97 | } | |
98 | ||
99 | fTotalStats = total; | |
100 | return true; | |
101 | } | |
102 | ||
103 | private boolean calculateTotalPerSyscall(ISegmentStore<ISegment> store, IProgressMonitor monitor) { | |
104 | fPerSyscallStats = new HashMap<>(); | |
105 | ||
106 | Iterator<ISegment> iter = store.iterator(); | |
107 | while (iter.hasNext()) { | |
108 | if (monitor.isCanceled()) { | |
109 | return false; | |
110 | } | |
111 | ISegment segment = iter.next(); | |
112 | if (segment instanceof SystemCall) { | |
113 | SystemCall syscall = (SystemCall) segment; | |
114 | LatencyStatistics values = fPerSyscallStats.get(syscall.getName()); | |
115 | if (values == null) { | |
116 | values = new LatencyStatistics(); | |
117 | } | |
118 | values.update(segment); | |
119 | fPerSyscallStats.put(syscall.getName(), values); | |
120 | } | |
121 | } | |
122 | ||
123 | return true; | |
124 | } | |
125 | ||
126 | @Override | |
127 | protected void canceling() { | |
128 | } | |
129 | ||
130 | /** | |
131 | * The total statistics | |
132 | * | |
133 | * @return the total statistics | |
134 | */ | |
135 | public @Nullable LatencyStatistics getTotalStats() { | |
136 | return fTotalStats; | |
137 | } | |
138 | ||
139 | /** | |
140 | * The per syscall statistics | |
141 | * | |
142 | * @return the per syscall statistics | |
143 | */ | |
144 | public Map<String, LatencyStatistics> getPerSyscallStats() { | |
145 | return fPerSyscallStats; | |
146 | } | |
147 | ||
148 | } |