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ace2121d 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.ui.criticalpath; | |
11 | ||
ace2121d FG |
12 | import org.eclipse.tracecompass.analysis.graph.core.criticalpath.CriticalPathModule; |
13 | import org.eclipse.tracecompass.analysis.os.linux.core.model.HostThread; | |
926c10d3 | 14 | import org.eclipse.tracecompass.analysis.os.linux.core.signals.TmfThreadSelectedSignal; |
ace2121d FG |
15 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.LttngWorker; |
16 | import org.eclipse.tracecompass.tmf.core.analysis.IAnalysisModule; | |
17 | import org.eclipse.tracecompass.tmf.core.analysis.TmfAbstractAnalysisParamProvider; | |
926c10d3 MK |
18 | import org.eclipse.tracecompass.tmf.core.signal.TmfSignalHandler; |
19 | import org.eclipse.tracecompass.tmf.core.signal.TmfSignalManager; | |
3a25f07a | 20 | import org.eclipse.tracecompass.tmf.core.signal.TmfTraceSelectedSignal; |
ace2121d | 21 | import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace; |
ace2121d FG |
22 | |
23 | /** | |
24 | * Class that provides parameters to the critical path analysis for lttng kernel | |
25 | * traces | |
26 | * | |
27 | * @author Geneviève Bastien | |
28 | */ | |
29 | public class CriticalPathParameterProvider extends TmfAbstractAnalysisParamProvider { | |
30 | ||
ace2121d FG |
31 | private static final String NAME = "Critical Path Lttng kernel parameter provider"; //$NON-NLS-1$ |
32 | ||
926c10d3 | 33 | private HostThread fCurrentHostThread = null; |
ace2121d FG |
34 | |
35 | /** | |
36 | * Constructor | |
37 | */ | |
38 | public CriticalPathParameterProvider() { | |
39 | super(); | |
926c10d3 | 40 | TmfSignalManager.register(this); |
ace2121d FG |
41 | } |
42 | ||
43 | @Override | |
44 | public String getName() { | |
45 | return NAME; | |
46 | } | |
47 | ||
48 | @Override | |
49 | public Object getParameter(String name) { | |
ace2121d | 50 | if (name.equals(CriticalPathModule.PARAM_WORKER)) { |
926c10d3 MK |
51 | final HostThread currentHostThread = fCurrentHostThread; |
52 | if (currentHostThread == null) { | |
53 | return null; | |
54 | } | |
ace2121d FG |
55 | /* Try to find the worker for the critical path */ |
56 | IAnalysisModule mod = getModule(); | |
57 | if ((mod != null) && (mod instanceof CriticalPathModule)) { | |
926c10d3 | 58 | LttngWorker worker = new LttngWorker(currentHostThread, "", 0); //$NON-NLS-1$ |
ace2121d FG |
59 | return worker; |
60 | } | |
ace2121d FG |
61 | } |
62 | return null; | |
63 | } | |
64 | ||
65 | @Override | |
66 | public boolean appliesToTrace(ITmfTrace trace) { | |
67 | return true; | |
68 | } | |
69 | ||
926c10d3 MK |
70 | private void setCurrentHostThread(HostThread hostThread) { |
71 | if (!hostThread.equals(fCurrentHostThread)) { | |
72 | fCurrentHostThread = hostThread; | |
73 | notifyParameterChanged(CriticalPathModule.PARAM_WORKER); | |
ace2121d FG |
74 | } |
75 | } | |
76 | ||
926c10d3 MK |
77 | /** |
78 | * Signal handler to know that a thread was selected | |
79 | * | |
80 | * @param signal | |
81 | * the thread was selected | |
82 | */ | |
83 | @TmfSignalHandler | |
84 | public void tmfThreadSelectedSignalHander(TmfThreadSelectedSignal signal) { | |
85 | final TmfThreadSelectedSignal threadSignal = signal; | |
86 | if (threadSignal != null) { | |
87 | setCurrentHostThread(new HostThread(threadSignal.getTraceHost(), threadSignal.getThreadId())); | |
ace2121d FG |
88 | } |
89 | } | |
90 | ||
3a25f07a GB |
91 | /** |
92 | * Reset the selection when a new trace is selected | |
93 | * | |
94 | * @param signal The trace selected signal | |
95 | */ | |
96 | @TmfSignalHandler | |
97 | public void traceSelected(TmfTraceSelectedSignal signal) { | |
98 | fCurrentHostThread = null; | |
99 | } | |
100 | ||
ace2121d | 101 | } |