Commit | Line | Data |
---|---|---|
7b79ee46 | 1 | /******************************************************************************* |
65a4afc0 | 2 | * Copyright (c) 2015, 2016 EfficiOS Inc., Ericsson |
7b79ee46 FLN |
3 | * |
4 | * All rights reserved. This program and the accompanying materials | |
5 | * are made available under the terms of the Eclipse Public License v1.0 | |
6 | * which accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | *******************************************************************************/ | |
9 | ||
10 | package org.eclipse.tracecompass.analysis.os.linux.core.latency; | |
11 | ||
12 | import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull; | |
13 | ||
14 | import java.io.IOException; | |
15 | import java.io.ObjectInputStream; | |
18c18ee0 | 16 | import java.util.Collection; |
6ad9d1cb | 17 | import java.util.Comparator; |
7b79ee46 | 18 | import java.util.HashMap; |
7b79ee46 | 19 | import java.util.Map; |
bbadfd0a AM |
20 | import java.util.function.Function; |
21 | import java.util.stream.Collectors; | |
7b79ee46 | 22 | |
07b705e8 | 23 | import org.eclipse.jdt.annotation.NonNull; |
7b79ee46 | 24 | import org.eclipse.jdt.annotation.Nullable; |
0f7a12d3 | 25 | import org.eclipse.tracecompass.analysis.os.linux.core.kernel.KernelTidAspect; |
7b79ee46 FLN |
26 | import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout; |
27 | import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelTrace; | |
65a4afc0 | 28 | import org.eclipse.tracecompass.analysis.timing.core.segmentstore.AbstractSegmentStoreAnalysisEventBasedModule; |
7b79ee46 FLN |
29 | import org.eclipse.tracecompass.segmentstore.core.ISegment; |
30 | import org.eclipse.tracecompass.segmentstore.core.ISegmentStore; | |
7b79ee46 | 31 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
18c18ee0 | 32 | import org.eclipse.tracecompass.tmf.core.segment.ISegmentAspect; |
7b79ee46 | 33 | |
18c18ee0 | 34 | import com.google.common.collect.ImmutableList; |
7b79ee46 FLN |
35 | |
36 | /** | |
37 | * @author Alexandre Montplaisir | |
fb3a499b | 38 | * @since 2.0 |
7b79ee46 | 39 | */ |
65a4afc0 | 40 | public class SystemCallLatencyAnalysis extends AbstractSegmentStoreAnalysisEventBasedModule { |
7b79ee46 FLN |
41 | |
42 | /** | |
43 | * The ID of this analysis | |
44 | */ | |
aa65365a | 45 | public static final String ID = "org.eclipse.tracecompass.analysis.os.linux.latency.syscall"; //$NON-NLS-1$ |
7b79ee46 FLN |
46 | |
47 | private static final String DATA_FILENAME = "latency-analysis.dat"; //$NON-NLS-1$ | |
48 | ||
18c18ee0 | 49 | private static final Collection<ISegmentAspect> BASE_ASPECTS = |
0e4f957e | 50 | ImmutableList.of(SyscallNameAspect.INSTANCE); |
18c18ee0 | 51 | |
7b79ee46 FLN |
52 | @Override |
53 | public String getId() { | |
54 | return ID; | |
55 | } | |
56 | ||
18c18ee0 BH |
57 | @Override |
58 | public Iterable<ISegmentAspect> getSegmentAspects() { | |
59 | return BASE_ASPECTS; | |
60 | } | |
61 | ||
7b79ee46 | 62 | @Override |
07b705e8 | 63 | public @NonNull String getDataFileName() { |
152630e0 | 64 | return DATA_FILENAME; |
7b79ee46 FLN |
65 | } |
66 | ||
67 | @Override | |
152630e0 BH |
68 | public AbstractSegmentStoreAnalysisRequest createAnalysisRequest(ISegmentStore<ISegment> syscalls) { |
69 | return new SyscallLatencyAnalysisRequest(syscalls); | |
7b79ee46 FLN |
70 | } |
71 | ||
152630e0 BH |
72 | @Override |
73 | protected Object[] readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException { | |
74 | return checkNotNull((Object[]) ois.readObject()); | |
7b79ee46 FLN |
75 | } |
76 | ||
152630e0 | 77 | private static class SyscallLatencyAnalysisRequest extends AbstractSegmentStoreAnalysisRequest { |
7b79ee46 | 78 | |
7b79ee46 | 79 | private final Map<Integer, SystemCall.InitialInfo> fOngoingSystemCalls = new HashMap<>(); |
152630e0 | 80 | private @Nullable IKernelAnalysisEventLayout fLayout; |
7b79ee46 | 81 | |
152630e0 BH |
82 | public SyscallLatencyAnalysisRequest(ISegmentStore<ISegment> syscalls) { |
83 | super(syscalls); | |
7b79ee46 FLN |
84 | } |
85 | ||
86 | @Override | |
87 | public void handleData(final ITmfEvent event) { | |
88 | super.handleData(event); | |
152630e0 BH |
89 | IKernelAnalysisEventLayout layout = fLayout; |
90 | if (layout == null) { | |
0e4f957e | 91 | IKernelTrace trace = (IKernelTrace) event.getTrace(); |
152630e0 BH |
92 | layout = trace.getKernelEventLayout(); |
93 | fLayout = layout; | |
94 | } | |
7b79ee46 FLN |
95 | final String eventName = event.getType().getName(); |
96 | ||
152630e0 BH |
97 | if (eventName.startsWith(layout.eventSyscallEntryPrefix()) || |
98 | eventName.startsWith(layout.eventCompatSyscallEntryPrefix())) { | |
7b79ee46 FLN |
99 | /* This is a system call entry event */ |
100 | ||
101 | Integer tid = KernelTidAspect.INSTANCE.resolve(event); | |
102 | if (tid == null) { | |
103 | // no information on this event/trace ? | |
104 | return; | |
105 | } | |
106 | ||
107 | /* Record the event's data into the intial system call info */ | |
108 | // String syscallName = fLayout.getSyscallNameFromEvent(event); | |
109 | long startTime = event.getTimestamp().getValue(); | |
152630e0 | 110 | String syscallName = eventName.substring(layout.eventSyscallEntryPrefix().length()); |
bbadfd0a AM |
111 | |
112 | Map<String, String> args = event.getContent().getFieldNames().stream() | |
113 | .collect(Collectors.toMap(Function.identity(), | |
114 | input -> checkNotNull(event.getContent().getField(input).getValue().toString()))); | |
115 | ||
116 | SystemCall.InitialInfo newSysCall = new SystemCall.InitialInfo(startTime, checkNotNull(syscallName), checkNotNull(args)); | |
7b79ee46 FLN |
117 | fOngoingSystemCalls.put(tid, newSysCall); |
118 | ||
152630e0 | 119 | } else if (eventName.startsWith(layout.eventSyscallExitPrefix())) { |
7b79ee46 FLN |
120 | /* This is a system call exit event */ |
121 | ||
122 | Integer tid = KernelTidAspect.INSTANCE.resolve(event); | |
123 | if (tid == null) { | |
124 | return; | |
125 | } | |
126 | ||
127 | SystemCall.InitialInfo info = fOngoingSystemCalls.remove(tid); | |
128 | if (info == null) { | |
129 | /* | |
130 | * We have not seen the entry event corresponding to this | |
131 | * exit (lost event, or before start of trace). | |
132 | */ | |
133 | return; | |
134 | } | |
135 | ||
136 | long endTime = event.getTimestamp().getValue(); | |
137 | int ret = ((Long) event.getContent().getField("ret").getValue()).intValue(); //$NON-NLS-1$ | |
138 | ISegment syscall = new SystemCall(info, endTime, ret); | |
152630e0 | 139 | getSegmentStore().add(syscall); |
7b79ee46 FLN |
140 | } |
141 | } | |
142 | ||
143 | @Override | |
144 | public void handleCompleted() { | |
145 | fOngoingSystemCalls.clear(); | |
146 | } | |
147 | } | |
148 | ||
18c18ee0 BH |
149 | private static class SyscallNameAspect implements ISegmentAspect { |
150 | public static final ISegmentAspect INSTANCE = new SyscallNameAspect(); | |
151 | ||
152 | private SyscallNameAspect() { } | |
153 | ||
154 | @Override | |
155 | public String getHelpText() { | |
156 | return checkNotNull(Messages.SegmentAspectHelpText_SystemCall); | |
157 | } | |
158 | @Override | |
159 | public String getName() { | |
160 | return checkNotNull(Messages.SegmentAspectName_SystemCall); | |
161 | } | |
162 | @Override | |
6ad9d1cb BH |
163 | public @Nullable Comparator<?> getComparator() { |
164 | return null; | |
165 | } | |
166 | @Override | |
18c18ee0 BH |
167 | public @Nullable String resolve(ISegment segment) { |
168 | if (segment instanceof SystemCall) { | |
169 | return ((SystemCall) segment).getName(); | |
170 | } | |
171 | return EMPTY_STRING; | |
172 | } | |
173 | } | |
174 | ||
7b79ee46 | 175 | } |