Commit | Line | Data |
---|---|---|
af7f72ce FG |
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 | ||
12 | import org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis.LinuxValues; | |
13 | import org.eclipse.tracecompass.analysis.os.linux.core.model.HostThread; | |
14 | import org.eclipse.tracecompass.common.core.NonNullUtils; | |
15 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.building.LttngKernelExecGraphProvider; | |
16 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.building.LttngKernelExecGraphProvider.ProcessStatus; | |
17 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.EventField; | |
18 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.LttngSystemModel; | |
19 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.LttngWorker; | |
20 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.trace.layout.LttngEventLayout; | |
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(); | |
46 | LttngEventLayout eventLayout = getProvider().getEventLayout(); | |
47 | ||
48 | if (eventName.equals(eventLayout.eventSchedSwitch())) { | |
49 | handleSchedSwitch(ev); | |
50 | } else if (eventName.equals(eventLayout.eventSchedProcessTTWU())) { | |
51 | if (traceHasEventSchedTTWU(ev.getTrace())) { | |
52 | handleSchedWakeup(ev); | |
53 | } | |
54 | } else if (eventName.equals(eventLayout.eventSchedProcessWakeup())) { | |
55 | if (!traceHasEventSchedTTWU(ev.getTrace())) { | |
56 | handleSchedWakeup(ev); | |
57 | } | |
58 | } else if (eventName.equals(eventLayout.eventSchedProcessWakeupNew())) { | |
59 | if (!traceHasEventSchedTTWU(ev.getTrace())) { | |
60 | handleSchedWakeup(ev); | |
61 | } | |
62 | } else if (eventName.equals(eventLayout.eventSchedProcessFork())) { | |
63 | handleSchedProcessFork(ev); | |
64 | } else if (eventName.equals(eventLayout.eventSchedProcessExit())) { | |
65 | handleSchedProcessExit(ev); | |
66 | } else if (eventName.equals(eventLayout.eventSchedProcessExec())) { | |
67 | handleSchedProcessExec(ev); | |
68 | } | |
69 | } | |
70 | ||
71 | private void handleSchedSwitch(ITmfEvent event) { | |
72 | Object cpuObj = TmfTraceUtils.resolveEventAspectOfClassForEvent(event.getTrace(), TmfCpuAspect.class, event); | |
73 | if (cpuObj == null) { | |
74 | throw new NullPointerException(); | |
75 | } | |
76 | Integer cpu = (Integer) cpuObj; | |
77 | LttngEventLayout eventLayout = getProvider().getEventLayout(); | |
78 | LttngSystemModel system = getProvider().getSystem(); | |
79 | ||
80 | Integer next = EventField.getInt(event, eventLayout.fieldNextTid()); | |
81 | Integer prev = EventField.getInt(event, eventLayout.fieldPrevTid()); | |
82 | long ts = event.getTimestamp().getValue(); | |
83 | long prev_state = EventField.getLong(event, eventLayout.fieldPrevState()); | |
84 | prev_state = (long) ((int) prev_state) & (LinuxValues.TASK_STATE_RUNNING | LinuxValues.TASK_INTERRUPTIBLE | LinuxValues.TASK_UNINTERRUPTIBLE); | |
85 | String host = event.getTrace().getHostId(); | |
86 | ||
87 | system.cacheTidOnCpu(cpu, new HostThread(event.getTrace().getHostId(), next)); | |
88 | ||
89 | HostThread nextHt = new HostThread(host, next); | |
90 | LttngWorker nextTask = system.findWorker(nextHt); | |
91 | if (nextTask == null) { | |
92 | String name = EventField.getOrDefault(event, eventLayout.fieldNextComm(), NonNullUtils.checkNotNull(Messages.TraceEventHandlerSched_UnknownThreadName)); | |
93 | nextTask = new LttngWorker(nextHt, name, ts); | |
94 | system.addWorker(nextTask); | |
95 | } | |
96 | nextTask.setStatus(ProcessStatus.RUN); | |
97 | ||
98 | HostThread prevHt = new HostThread(host, prev); | |
99 | LttngWorker prevTask = system.findWorker(prevHt); | |
100 | if (prevTask == null) { | |
101 | String name = EventField.getOrDefault(event, eventLayout.fieldPrevComm(), NonNullUtils.checkNotNull(Messages.TraceEventHandlerSched_UnknownThreadName)); | |
102 | prevTask = new LttngWorker(prevHt, name, ts); | |
103 | system.addWorker(prevTask); | |
104 | } | |
105 | /* prev_state == 0 means runnable, thus waits for cpu */ | |
106 | if (prev_state == 0) { | |
107 | prevTask.setStatus(ProcessStatus.WAIT_CPU); | |
108 | } else { | |
109 | prevTask.setStatus(ProcessStatus.WAIT_BLOCKED); | |
110 | } | |
111 | } | |
112 | ||
113 | private void handleSchedProcessFork(ITmfEvent event) { | |
114 | String host = event.getTrace().getHostId(); | |
115 | LttngEventLayout eventLayout = getProvider().getEventLayout(); | |
116 | LttngSystemModel system = getProvider().getSystem(); | |
117 | ||
118 | Integer childTid = EventField.getInt(event, eventLayout.fieldChildTid()); | |
119 | String name = EventField.getString(event, eventLayout.fieldChildComm()); | |
120 | long ts = event.getTimestamp().getValue(); | |
121 | ||
122 | HostThread childHt = new HostThread(host, childTid); | |
123 | ||
124 | LttngWorker childTask = system.findWorker(childHt); | |
125 | if (childTask == null) { | |
126 | childTask = new LttngWorker(childHt, name, ts); | |
127 | system.addWorker(childTask); | |
128 | } | |
129 | ||
130 | childTask.setStatus(ProcessStatus.WAIT_FORK); | |
131 | } | |
132 | ||
133 | private void handleSchedWakeup(ITmfEvent event) { | |
134 | String host = event.getTrace().getHostId(); | |
135 | Object cpuObj = TmfTraceUtils.resolveEventAspectOfClassForEvent(event.getTrace(), TmfCpuAspect.class, event); | |
136 | if (cpuObj == null) { | |
137 | throw new NullPointerException(); | |
138 | } | |
139 | Integer cpu = (Integer) cpuObj; | |
140 | LttngEventLayout eventLayout = getProvider().getEventLayout(); | |
141 | LttngSystemModel system = getProvider().getSystem(); | |
142 | ||
143 | Integer tid = EventField.getInt(event, eventLayout.fieldTid()); | |
144 | HostThread targetHt = new HostThread(host, tid); | |
145 | ||
146 | LttngWorker target = system.findWorker(targetHt); | |
147 | LttngWorker current = system.getWorkerOnCpu(host, cpu); | |
148 | if (target == null) { | |
149 | String name = EventField.getOrDefault(event, eventLayout.fieldComm(), NonNullUtils.checkNotNull(Messages.TraceEventHandlerSched_UnknownThreadName)); | |
150 | target = new LttngWorker(targetHt, name, event.getTimestamp().getValue()); | |
151 | system.addWorker(target); | |
152 | target.setStatus(ProcessStatus.WAIT_BLOCKED); | |
153 | } | |
154 | // spurious wakeup | |
155 | ProcessStatus status = target.getStatus(); | |
156 | if ((current != null && target.getHostThread().equals(current.getHostThread())) || | |
157 | status == ProcessStatus.WAIT_CPU) { | |
158 | return; | |
159 | } | |
160 | if (status == ProcessStatus.WAIT_BLOCKED || | |
161 | status == ProcessStatus.WAIT_FORK || | |
162 | status == ProcessStatus.UNKNOWN) { | |
163 | target.setStatus(ProcessStatus.WAIT_CPU); | |
164 | return; | |
165 | } | |
166 | } | |
167 | ||
168 | private void handleSchedProcessExit(ITmfEvent event) { | |
169 | String host = event.getTrace().getHostId(); | |
170 | LttngEventLayout eventLayout = getProvider().getEventLayout(); | |
171 | LttngSystemModel system = getProvider().getSystem(); | |
172 | ||
173 | Integer tid = EventField.getInt(event, eventLayout.fieldTid()); | |
174 | LttngWorker task = system.findWorker(new HostThread(host, tid)); | |
175 | if (task == null) { | |
176 | return; | |
177 | } | |
178 | task.setStatus(ProcessStatus.EXIT); | |
179 | } | |
180 | ||
181 | private void handleSchedProcessExec(ITmfEvent event) { | |
182 | String host = event.getTrace().getHostId(); | |
183 | Object cpuObj = TmfTraceUtils.resolveEventAspectOfClassForEvent(event.getTrace(), TmfCpuAspect.class, event); | |
184 | if (cpuObj == null) { | |
185 | throw new NullPointerException(); | |
186 | } | |
187 | Integer cpu = (Integer) cpuObj; | |
188 | LttngEventLayout eventLayout = getProvider().getEventLayout(); | |
189 | LttngSystemModel system = getProvider().getSystem(); | |
190 | ||
191 | String filename = EventField.getString(event, eventLayout.fieldFilename()); | |
192 | LttngWorker task = system.getWorkerOnCpu(host, cpu); | |
193 | if (task == null) { | |
194 | return; | |
195 | } | |
196 | task.setName(filename); | |
197 | } | |
198 | ||
199 | } |