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1 | /******************************************************************************* |
2 | * Copyright (c) 2015 École Polytechnique de Montréal | |
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.internal.lttng2.kernel.core.analysis.graph.handlers; | |
11 | ||
0f7a12d3 | 12 | import org.eclipse.tracecompass.analysis.os.linux.core.kernel.LinuxValues; |
af7f72ce | 13 | import org.eclipse.tracecompass.analysis.os.linux.core.model.HostThread; |
5aa7fe19 | 14 | import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout; |
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15 | import org.eclipse.tracecompass.common.core.NonNullUtils; |
16 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.building.LttngKernelExecGraphProvider; | |
17 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.building.LttngKernelExecGraphProvider.ProcessStatus; | |
18 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.EventField; | |
19 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.LttngSystemModel; | |
20 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.LttngWorker; | |
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21 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
22 | import org.eclipse.tracecompass.tmf.core.event.aspect.TmfCpuAspect; | |
23 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; | |
24 | ||
25 | /** | |
26 | * Provides the current task running on a CPU according to scheduling events | |
27 | * | |
28 | * @author Francis Giraldeau | |
29 | * @author Geneviève Bastien | |
30 | */ | |
31 | public class TraceEventHandlerSched extends BaseHandler { | |
32 | ||
33 | /** | |
34 | * Constructor | |
35 | * | |
36 | * @param provider | |
37 | * The parent graph provider | |
38 | */ | |
39 | public TraceEventHandlerSched(LttngKernelExecGraphProvider provider) { | |
40 | super(provider); | |
41 | } | |
42 | ||
43 | @Override | |
44 | public void handleEvent(ITmfEvent ev) { | |
45 | String eventName = ev.getName(); | |
5aa7fe19 | 46 | IKernelAnalysisEventLayout eventLayout = getProvider().getEventLayout(ev.getTrace()); |
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47 | |
48 | if (eventName.equals(eventLayout.eventSchedSwitch())) { | |
49 | handleSchedSwitch(ev); | |
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50 | } else if (eventName.equals(eventLayout.eventSchedProcessFork())) { |
51 | handleSchedProcessFork(ev); | |
52 | } else if (eventName.equals(eventLayout.eventSchedProcessExit())) { | |
53 | handleSchedProcessExit(ev); | |
54 | } else if (eventName.equals(eventLayout.eventSchedProcessExec())) { | |
55 | handleSchedProcessExec(ev); | |
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56 | } else if (isWakeupEvent(ev)) { |
57 | handleSchedWakeup(ev); | |
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58 | } |
59 | } | |
60 | ||
61 | private void handleSchedSwitch(ITmfEvent event) { | |
b3867ecc | 62 | Integer cpu = NonNullUtils.checkNotNull(TmfTraceUtils.resolveIntEventAspectOfClassForEvent(event.getTrace(), TmfCpuAspect.class, event)); |
5aa7fe19 | 63 | IKernelAnalysisEventLayout eventLayout = getProvider().getEventLayout(event.getTrace()); |
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64 | LttngSystemModel system = getProvider().getSystem(); |
65 | ||
66 | Integer next = EventField.getInt(event, eventLayout.fieldNextTid()); | |
67 | Integer prev = EventField.getInt(event, eventLayout.fieldPrevTid()); | |
68 | long ts = event.getTimestamp().getValue(); | |
69 | long prev_state = EventField.getLong(event, eventLayout.fieldPrevState()); | |
70 | prev_state = (long) ((int) prev_state) & (LinuxValues.TASK_STATE_RUNNING | LinuxValues.TASK_INTERRUPTIBLE | LinuxValues.TASK_UNINTERRUPTIBLE); | |
71 | String host = event.getTrace().getHostId(); | |
72 | ||
73 | system.cacheTidOnCpu(cpu, new HostThread(event.getTrace().getHostId(), next)); | |
74 | ||
75 | HostThread nextHt = new HostThread(host, next); | |
76 | LttngWorker nextTask = system.findWorker(nextHt); | |
77 | if (nextTask == null) { | |
78 | String name = EventField.getOrDefault(event, eventLayout.fieldNextComm(), NonNullUtils.checkNotNull(Messages.TraceEventHandlerSched_UnknownThreadName)); | |
79 | nextTask = new LttngWorker(nextHt, name, ts); | |
80 | system.addWorker(nextTask); | |
81 | } | |
82 | nextTask.setStatus(ProcessStatus.RUN); | |
83 | ||
84 | HostThread prevHt = new HostThread(host, prev); | |
85 | LttngWorker prevTask = system.findWorker(prevHt); | |
7a0c73cc | 86 | String name = EventField.getOrDefault(event, eventLayout.fieldPrevComm(), NonNullUtils.checkNotNull(Messages.TraceEventHandlerSched_UnknownThreadName)); |
af7f72ce | 87 | if (prevTask == null) { |
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88 | prevTask = new LttngWorker(prevHt, name, ts); |
89 | system.addWorker(prevTask); | |
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90 | } else if (prev != 0) { |
91 | /* update the process name if changed at runtime */ | |
92 | prevTask.setName(name); | |
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93 | } |
94 | /* prev_state == 0 means runnable, thus waits for cpu */ | |
95 | if (prev_state == 0) { | |
96 | prevTask.setStatus(ProcessStatus.WAIT_CPU); | |
97 | } else { | |
98 | prevTask.setStatus(ProcessStatus.WAIT_BLOCKED); | |
99 | } | |
100 | } | |
101 | ||
102 | private void handleSchedProcessFork(ITmfEvent event) { | |
103 | String host = event.getTrace().getHostId(); | |
5aa7fe19 | 104 | IKernelAnalysisEventLayout eventLayout = getProvider().getEventLayout(event.getTrace()); |
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105 | LttngSystemModel system = getProvider().getSystem(); |
106 | ||
107 | Integer childTid = EventField.getInt(event, eventLayout.fieldChildTid()); | |
108 | String name = EventField.getString(event, eventLayout.fieldChildComm()); | |
109 | long ts = event.getTimestamp().getValue(); | |
110 | ||
111 | HostThread childHt = new HostThread(host, childTid); | |
112 | ||
113 | LttngWorker childTask = system.findWorker(childHt); | |
114 | if (childTask == null) { | |
115 | childTask = new LttngWorker(childHt, name, ts); | |
116 | system.addWorker(childTask); | |
117 | } | |
118 | ||
119 | childTask.setStatus(ProcessStatus.WAIT_FORK); | |
120 | } | |
121 | ||
122 | private void handleSchedWakeup(ITmfEvent event) { | |
123 | String host = event.getTrace().getHostId(); | |
b3867ecc | 124 | Integer cpu = NonNullUtils.checkNotNull(TmfTraceUtils.resolveIntEventAspectOfClassForEvent(event.getTrace(), TmfCpuAspect.class, event)); |
5aa7fe19 | 125 | IKernelAnalysisEventLayout eventLayout = getProvider().getEventLayout(event.getTrace()); |
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126 | LttngSystemModel system = getProvider().getSystem(); |
127 | ||
128 | Integer tid = EventField.getInt(event, eventLayout.fieldTid()); | |
129 | HostThread targetHt = new HostThread(host, tid); | |
130 | ||
131 | LttngWorker target = system.findWorker(targetHt); | |
132 | LttngWorker current = system.getWorkerOnCpu(host, cpu); | |
5aa7fe19 | 133 | |
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134 | if (target == null) { |
135 | String name = EventField.getOrDefault(event, eventLayout.fieldComm(), NonNullUtils.checkNotNull(Messages.TraceEventHandlerSched_UnknownThreadName)); | |
136 | target = new LttngWorker(targetHt, name, event.getTimestamp().getValue()); | |
137 | system.addWorker(target); | |
138 | target.setStatus(ProcessStatus.WAIT_BLOCKED); | |
139 | } | |
140 | // spurious wakeup | |
141 | ProcessStatus status = target.getStatus(); | |
142 | if ((current != null && target.getHostThread().equals(current.getHostThread())) || | |
143 | status == ProcessStatus.WAIT_CPU) { | |
144 | return; | |
145 | } | |
146 | if (status == ProcessStatus.WAIT_BLOCKED || | |
147 | status == ProcessStatus.WAIT_FORK || | |
148 | status == ProcessStatus.UNKNOWN) { | |
149 | target.setStatus(ProcessStatus.WAIT_CPU); | |
150 | return; | |
151 | } | |
152 | } | |
153 | ||
154 | private void handleSchedProcessExit(ITmfEvent event) { | |
155 | String host = event.getTrace().getHostId(); | |
5aa7fe19 | 156 | IKernelAnalysisEventLayout eventLayout = getProvider().getEventLayout(event.getTrace()); |
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157 | LttngSystemModel system = getProvider().getSystem(); |
158 | ||
159 | Integer tid = EventField.getInt(event, eventLayout.fieldTid()); | |
160 | LttngWorker task = system.findWorker(new HostThread(host, tid)); | |
161 | if (task == null) { | |
162 | return; | |
163 | } | |
164 | task.setStatus(ProcessStatus.EXIT); | |
165 | } | |
166 | ||
167 | private void handleSchedProcessExec(ITmfEvent event) { | |
168 | String host = event.getTrace().getHostId(); | |
b3867ecc | 169 | Integer cpu = NonNullUtils.checkNotNull(TmfTraceUtils.resolveIntEventAspectOfClassForEvent(event.getTrace(), TmfCpuAspect.class, event)); |
5aa7fe19 | 170 | IKernelAnalysisEventLayout eventLayout = getProvider().getEventLayout(event.getTrace()); |
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171 | LttngSystemModel system = getProvider().getSystem(); |
172 | ||
173 | String filename = EventField.getString(event, eventLayout.fieldFilename()); | |
174 | LttngWorker task = system.getWorkerOnCpu(host, cpu); | |
175 | if (task == null) { | |
176 | return; | |
177 | } | |
178 | task.setName(filename); | |
179 | } | |
180 | ||
181 | } |