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dffc234f | 1 | /******************************************************************************* |
ed902a2b | 2 | * Copyright (c) 2014, 2015 École Polytechnique de Montréal |
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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 | * Contributors: | |
10 | * Geneviève Bastien - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
e363eae1 | 13 | package org.eclipse.tracecompass.analysis.os.linux.ui.views.cpuusage; |
dffc234f | 14 | |
202956f1 AM |
15 | import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull; |
16 | ||
dffc234f | 17 | import java.util.Arrays; |
17a3454d | 18 | import java.util.Collections; |
dffc234f GB |
19 | import java.util.HashMap; |
20 | import java.util.LinkedHashMap; | |
21 | import java.util.Map; | |
22 | import java.util.Map.Entry; | |
23 | ||
24 | import org.eclipse.core.runtime.IProgressMonitor; | |
dffc234f | 25 | import org.eclipse.swt.widgets.Composite; |
e363eae1 AM |
26 | import org.eclipse.tracecompass.analysis.os.linux.core.cpuusage.KernelCpuUsageAnalysis; |
27 | import org.eclipse.tracecompass.internal.analysis.os.linux.ui.Activator; | |
e894a508 AM |
28 | import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem; |
29 | import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException; | |
1d83ed07 | 30 | import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace; |
b8585c7c | 31 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; |
2bdf0193 | 32 | import org.eclipse.tracecompass.tmf.ui.viewers.xycharts.linecharts.TmfCommonXLineChartViewer; |
dffc234f GB |
33 | |
34 | /** | |
35 | * CPU usage viewer with XY line chart. It displays the total CPU usage and that | |
36 | * of the threads selected in the CPU usage tree viewer. | |
37 | * | |
38 | * @author Geneviève Bastien | |
39 | */ | |
40 | public class CpuUsageXYViewer extends TmfCommonXLineChartViewer { | |
41 | ||
e363eae1 | 42 | private KernelCpuUsageAnalysis fModule = null; |
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43 | |
44 | /* Maps a thread ID to a list of y values */ | |
45 | private final Map<String, double[]> fYValues = new LinkedHashMap<>(); | |
46 | /* | |
47 | * To avoid up and downs CPU usage when process is in and out of CPU | |
48 | * frequently, use a smaller resolution to get better averages. | |
49 | */ | |
50 | private static final double RESOLUTION = 0.4; | |
51 | ||
d48661f2 GB |
52 | // Timeout between updates in the updateData thread |
53 | private static final long BUILD_UPDATE_TIMEOUT = 500; | |
54 | ||
dffc234f GB |
55 | private long fSelectedThread = -1; |
56 | ||
57 | /** | |
58 | * Constructor | |
59 | * | |
60 | * @param parent | |
61 | * parent composite | |
dffc234f | 62 | */ |
e9a0d1cb | 63 | public CpuUsageXYViewer(Composite parent) { |
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64 | super(parent, Messages.CpuUsageXYViewer_Title, Messages.CpuUsageXYViewer_TimeXAxis, Messages.CpuUsageXYViewer_CpuYAxis); |
65 | setResolution(RESOLUTION); | |
dffc234f GB |
66 | } |
67 | ||
68 | @Override | |
69 | protected void initializeDataSource() { | |
1d83ed07 AM |
70 | ITmfTrace trace = getTrace(); |
71 | if (trace != null) { | |
72 | fModule = TmfTraceUtils.getAnalysisModuleOfClass(trace, KernelCpuUsageAnalysis.class, KernelCpuUsageAnalysis.ID); | |
dffc234f GB |
73 | if (fModule == null) { |
74 | return; | |
75 | } | |
76 | fModule.schedule(); | |
77 | } | |
78 | } | |
79 | ||
80 | private static double[] zeroFill(int nb) { | |
81 | double[] arr = new double[nb]; | |
82 | Arrays.fill(arr, 0.0); | |
83 | return arr; | |
84 | } | |
85 | ||
86 | @Override | |
87 | protected void updateData(long start, long end, int nb, IProgressMonitor monitor) { | |
88 | try { | |
89 | if (getTrace() == null || fModule == null) { | |
90 | return; | |
91 | } | |
d48661f2 | 92 | fModule.waitForInitialization(); |
dffc234f | 93 | ITmfStateSystem ss = fModule.getStateSystem(); |
dffc234f GB |
94 | if (ss == null) { |
95 | return; | |
96 | } | |
97 | double[] xvalues = getXAxis(start, end, nb); | |
98 | if (xvalues.length == 0) { | |
99 | return; | |
100 | } | |
101 | setXAxis(xvalues); | |
102 | ||
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103 | boolean complete = false; |
104 | long currentEnd = start; | |
dffc234f | 105 | |
d48661f2 | 106 | while (!complete && currentEnd < end) { |
dffc234f | 107 | |
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108 | if (monitor.isCanceled()) { |
109 | return; | |
110 | } | |
dffc234f | 111 | |
d48661f2 GB |
112 | long traceStart = getStartTime(); |
113 | long traceEnd = getEndTime(); | |
114 | long offset = getTimeOffset(); | |
115 | long selectedThread = fSelectedThread; | |
116 | ||
117 | complete = ss.waitUntilBuilt(BUILD_UPDATE_TIMEOUT); | |
118 | currentEnd = ss.getCurrentEndTime(); | |
119 | ||
120 | /* Initialize the data */ | |
17a3454d | 121 | Map<String, Long> cpuUsageMap = fModule.getCpuUsageInRange(Collections.EMPTY_SET, Math.max(start, traceStart), Math.min(end, traceEnd)); |
d48661f2 GB |
122 | Map<String, String> totalEntries = new HashMap<>(); |
123 | fYValues.clear(); | |
124 | fYValues.put(Messages.CpuUsageXYViewer_Total, zeroFill(xvalues.length)); | |
125 | String stringSelectedThread = Long.toString(selectedThread); | |
126 | if (selectedThread != -1) { | |
127 | fYValues.put(stringSelectedThread, zeroFill(xvalues.length)); | |
128 | } | |
129 | ||
130 | for (Entry<String, Long> entry : cpuUsageMap.entrySet()) { | |
131 | /* | |
132 | * Process only entries representing the total of all CPUs | |
133 | * and that have time on CPU | |
134 | */ | |
135 | if (entry.getValue() == 0) { | |
136 | continue; | |
137 | } | |
e363eae1 | 138 | if (!entry.getKey().startsWith(KernelCpuUsageAnalysis.TOTAL)) { |
d48661f2 GB |
139 | continue; |
140 | } | |
e363eae1 | 141 | String[] strings = entry.getKey().split(KernelCpuUsageAnalysis.SPLIT_STRING, 2); |
d48661f2 | 142 | |
e363eae1 | 143 | if ((strings.length > 1) && !(strings[1].equals(KernelCpuUsageAnalysis.TID_ZERO))) { |
d48661f2 GB |
144 | /* This is the total cpu usage for a thread */ |
145 | totalEntries.put(strings[1], entry.getKey()); | |
146 | } | |
147 | } | |
dffc234f | 148 | |
932fc182 | 149 | double prevX = xvalues[0] - 1; |
d48661f2 | 150 | long prevTime = (long) prevX + offset; |
dffc234f | 151 | /* |
d48661f2 GB |
152 | * make sure that time is in the trace range after double to |
153 | * long conversion | |
dffc234f | 154 | */ |
d48661f2 GB |
155 | prevTime = Math.max(traceStart, prevTime); |
156 | prevTime = Math.min(traceEnd, prevTime); | |
157 | /* Get CPU usage statistics for each x value */ | |
932fc182 | 158 | for (int i = 0; i < xvalues.length; i++) { |
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159 | if (monitor.isCanceled()) { |
160 | return; | |
161 | } | |
162 | long totalCpu = 0; | |
163 | double x = xvalues[i]; | |
164 | long time = (long) x + offset; | |
165 | time = Math.max(traceStart, time); | |
166 | time = Math.min(traceEnd, time); | |
932fc182 PT |
167 | if (time == prevTime) { |
168 | /* | |
169 | * we need at least 1 time unit to be able to get cpu | |
170 | * usage when zoomed in | |
171 | */ | |
172 | prevTime = time - 1; | |
173 | } | |
dffc234f | 174 | |
17a3454d | 175 | cpuUsageMap = fModule.getCpuUsageInRange(Collections.EMPTY_SET, prevTime, time); |
dffc234f | 176 | |
d48661f2 GB |
177 | /* |
178 | * Calculate the sum of all total entries, and add a data | |
179 | * point to the selected one | |
180 | */ | |
181 | for (Entry<String, String> entry : totalEntries.entrySet()) { | |
182 | Long cpuEntry = cpuUsageMap.get(entry.getValue()); | |
183 | cpuEntry = cpuEntry != null ? cpuEntry : 0L; | |
184 | ||
185 | totalCpu += cpuEntry; | |
dffc234f | 186 | |
d48661f2 GB |
187 | if (entry.getKey().equals(stringSelectedThread)) { |
188 | /* This is the total cpu usage for a thread */ | |
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189 | double[] key = checkNotNull(fYValues.get(entry.getKey())); |
190 | key[i] = (double) cpuEntry / (double) (time - prevTime) * 100; | |
d48661f2 GB |
191 | } |
192 | ||
193 | } | |
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194 | double[] key = checkNotNull(fYValues.get(Messages.CpuUsageXYViewer_Total)); |
195 | key[i] = (double) totalCpu / (double) (time - prevTime) * 100; | |
d48661f2 | 196 | prevTime = time; |
dffc234f | 197 | } |
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198 | for (Entry<String, double[]> entry : fYValues.entrySet()) { |
199 | setSeries(entry.getKey(), entry.getValue()); | |
200 | } | |
201 | if (monitor.isCanceled()) { | |
202 | return; | |
203 | } | |
204 | updateDisplay(); | |
dffc234f | 205 | } |
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206 | } catch (StateValueTypeException e) { |
207 | Activator.getDefault().logError("Error updating the data of the CPU usage view", e); //$NON-NLS-1$ | |
208 | } | |
209 | ||
210 | } | |
211 | ||
212 | /** | |
213 | * Set the selected thread ID, which will be graphed in this viewer | |
214 | * | |
215 | * @param tid | |
216 | * The selected thread ID | |
217 | */ | |
218 | public void setSelectedThread(long tid) { | |
219 | cancelUpdate(); | |
220 | deleteSeries(Long.toString(fSelectedThread)); | |
221 | fSelectedThread = tid; | |
222 | updateContent(); | |
223 | } | |
224 | ||
225 | } |