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1 | /******************************************************************************* |
2 | * Copyright (c) 2015 Ericsson | |
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 | * Contributors: | |
10 | * Matthew Khouzam - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.handlers; | |
14 | ||
15 | import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull; | |
16 | ||
b054b99a | 17 | import org.eclipse.jdt.annotation.Nullable; |
0f7a12d3 AM |
18 | import org.eclipse.tracecompass.analysis.os.linux.core.kernel.LinuxValues; |
19 | import org.eclipse.tracecompass.analysis.os.linux.core.kernel.StateValues; | |
c8f45ad2 | 20 | import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout; |
f69045e2 | 21 | import org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.Attributes; |
c8f45ad2 MK |
22 | import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder; |
23 | import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException; | |
24 | import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue; | |
25 | import org.eclipse.tracecompass.statesystem.core.statevalue.TmfStateValue; | |
26 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; | |
27 | import org.eclipse.tracecompass.tmf.core.event.ITmfEventField; | |
28 | ||
29 | /** | |
30 | * LTTng Specific state dump event handler | |
31 | */ | |
32 | public class StateDumpHandler extends KernelEventHandler { | |
33 | ||
34 | /** | |
35 | * Constructor | |
36 | * | |
37 | * @param layout | |
38 | * event layout | |
39 | */ | |
40 | public StateDumpHandler(IKernelAnalysisEventLayout layout) { | |
41 | super(layout); | |
42 | } | |
43 | ||
44 | @Override | |
45 | public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException { | |
46 | ITmfEventField content = event.getContent(); | |
b054b99a | 47 | Integer eventCpu = KernelEventHandlerUtils.getCpu(event); |
c8f45ad2 MK |
48 | int tid = ((Long) content.getField("tid").getValue()).intValue(); //$NON-NLS-1$ |
49 | int pid = ((Long) content.getField("pid").getValue()).intValue(); //$NON-NLS-1$ | |
50 | int ppid = ((Long) content.getField("ppid").getValue()).intValue(); //$NON-NLS-1$ | |
51 | int status = ((Long) content.getField("status").getValue()).intValue(); //$NON-NLS-1$ | |
52 | String name = checkNotNull((String) content.getField("name").getValue()); //$NON-NLS-1$ | |
b054b99a AM |
53 | /* Only present in LTTng 2.10+ */ |
54 | @Nullable Long cpuField = content.getFieldValue(Long.class, "cpu"); //$NON-NLS-1$ | |
c8f45ad2 MK |
55 | /* |
56 | * "mode" could be interesting too, but it doesn't seem to be populated | |
57 | * with anything relevant for now. | |
58 | */ | |
59 | ||
b054b99a | 60 | String threadAttributeName = Attributes.buildThreadAttributeName(tid, eventCpu); |
8a0bbebf MJ |
61 | if (threadAttributeName == null) { |
62 | return; | |
63 | } | |
64 | ||
65 | int curThreadNode = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeThreads(ss), threadAttributeName); | |
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66 | long timestamp = KernelEventHandlerUtils.getTimestamp(event); |
67 | /* Set the process' name */ | |
68 | setProcessName(ss, name, curThreadNode, timestamp); | |
69 | ||
70 | /* Set the process' PPID */ | |
71 | setPpid(ss, tid, pid, ppid, curThreadNode, timestamp); | |
72 | ||
73 | /* Set the process' status */ | |
b054b99a | 74 | setStatus(ss, status, curThreadNode, cpuField, timestamp); |
c8f45ad2 MK |
75 | } |
76 | ||
b054b99a | 77 | private static void setStatus(ITmfStateSystemBuilder ss, int status, int curThreadNode, @Nullable Long cpu, long timestamp) { |
c8f45ad2 | 78 | ITmfStateValue value; |
d3cc952f | 79 | if (ss.queryOngoingState(curThreadNode).isNull()) { |
c8f45ad2 MK |
80 | switch (status) { |
81 | case LinuxValues.STATEDUMP_PROCESS_STATUS_WAIT_CPU: | |
82 | value = StateValues.PROCESS_STATUS_WAIT_FOR_CPU_VALUE; | |
b054b99a | 83 | setRunQueue(ss, curThreadNode, cpu, timestamp); |
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84 | break; |
85 | case LinuxValues.STATEDUMP_PROCESS_STATUS_WAIT: | |
86 | /* | |
87 | * We have no information on what the process is waiting on | |
88 | * (unlike a sched_switch for example), so we will use the | |
89 | * WAIT_UNKNOWN state instead of the "normal" WAIT_BLOCKED | |
90 | * state. | |
91 | */ | |
92 | value = StateValues.PROCESS_STATUS_WAIT_UNKNOWN_VALUE; | |
93 | break; | |
94 | default: | |
95 | value = StateValues.PROCESS_STATUS_UNKNOWN_VALUE; | |
96 | } | |
d3cc952f | 97 | ss.modifyAttribute(timestamp, value, curThreadNode); |
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98 | } |
99 | } | |
100 | ||
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101 | private static void setRunQueue(ITmfStateSystemBuilder ss, int curThreadNode, @Nullable Long cpu, long timestamp) { |
102 | if (cpu != null) { | |
103 | int quark = ss.getQuarkRelativeAndAdd(curThreadNode, Attributes.CURRENT_CPU_RQ); | |
104 | ITmfStateValue value = TmfStateValue.newValueInt(cpu.intValue()); | |
105 | ss.modifyAttribute(timestamp, value, quark); | |
106 | } | |
107 | } | |
108 | ||
5ae5a500 | 109 | private static void setPpid(ITmfStateSystemBuilder ss, int tid, int pid, int ppid, int curThreadNode, long timestamp) { |
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110 | ITmfStateValue value; |
111 | int quark; | |
112 | quark = ss.getQuarkRelativeAndAdd(curThreadNode, Attributes.PPID); | |
113 | if (ss.queryOngoingState(quark).isNull()) { | |
114 | if (pid == tid) { | |
115 | /* We have a process. Use the 'PPID' field. */ | |
116 | value = TmfStateValue.newValueInt(ppid); | |
117 | } else { | |
118 | /* We have a thread, use the 'PID' field for the parent. */ | |
119 | value = TmfStateValue.newValueInt(pid); | |
120 | } | |
121 | ss.modifyAttribute(timestamp, value, quark); | |
122 | } | |
123 | } | |
124 | ||
5ae5a500 | 125 | private static void setProcessName(ITmfStateSystemBuilder ss, String name, int curThreadNode, long timestamp) { |
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126 | ITmfStateValue value; |
127 | int quark = ss.getQuarkRelativeAndAdd(curThreadNode, Attributes.EXEC_NAME); | |
128 | if (ss.queryOngoingState(quark).isNull()) { | |
129 | /* If the value didn't exist previously, set it */ | |
130 | value = TmfStateValue.newValueString(name); | |
131 | ss.modifyAttribute(timestamp, value, quark); | |
132 | } | |
133 | } | |
134 | } |