analysis/org.eclipse.tracecompass.analysis.os.linux.ui/src/org/eclipse/tracecompass/analysis/os/linux/ui/views/cpuusage/CpuUsageView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2014, 2016 École Polytechnique de Montréal and others
   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
  13 package org.eclipse.tracecompass.analysis.os.linux.ui.views.cpuusage;
  14
  15 import org.eclipse.jdt.annotation.Nullable;
  16 import org.eclipse.jface.viewers.ISelection;
  17 import org.eclipse.jface.viewers.ISelectionChangedListener;
  18 import org.eclipse.jface.viewers.IStructuredSelection;
  19 import org.eclipse.jface.viewers.SelectionChangedEvent;
  20 import org.eclipse.swt.events.ControlAdapter;
  21 import org.eclipse.swt.events.ControlEvent;
  22 import org.eclipse.swt.widgets.Composite;
  23 import org.eclipse.tracecompass.analysis.os.linux.core.signals.TmfCpuSelectedSignal;
  24 import org.eclipse.tracecompass.tmf.core.signal.TmfSignalHandler;
  25 import org.eclipse.tracecompass.tmf.core.signal.TmfTraceSelectedSignal;
  26 import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
  27 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceManager;
  28 import org.eclipse.tracecompass.tmf.ui.viewers.TmfViewer;
  29 import org.eclipse.tracecompass.tmf.ui.viewers.xycharts.TmfXYChartViewer;
  30 import org.eclipse.tracecompass.tmf.ui.views.TmfChartView;
  31
  32 /**
  33  * CPU usage view. It contains 2 viewers: one tree viewer showing all the
  34  * threads who were on the CPU in the time range, and one XY chart viewer
  35  * plotting the total time spent on CPU and the time of the threads selected in
  36  * the tree viewer.
  37  *
  38  * @author Geneviève Bastien
  39  */
  40 public class CpuUsageView extends TmfChartView {
  41
  42     /** ID string */
  43     public static final String ID = "org.eclipse.tracecompass.analysis.os.linux.views.cpuusage"; //$NON-NLS-1$
  44
  45     private @Nullable CpuUsageComposite fTreeViewer = null;
  46     private @Nullable CpuUsageXYViewer fXYViewer = null;
  47
  48     /**
  49      * Constructor
  50      */
  51     public CpuUsageView() {
  52         super(Messages.CpuUsageView_Title);
  53     }
  54
  55     @Override
  56     public void createPartControl(Composite parent) {
  57         super.createPartControl(parent);
  58
  59         /* Initialize the viewers with the currently selected trace */
  60         ITmfTrace trace = TmfTraceManager.getInstance().getActiveTrace();
  61         if (trace != null) {
  62             TmfTraceSelectedSignal signal = new TmfTraceSelectedSignal(this, trace);
  63             if (fTreeViewer != null) {
  64                 fTreeViewer.traceSelected(signal);
  65             }
  66             if (fXYViewer != null) {
  67                 fXYViewer.traceSelected(signal);
  68             }
  69         }
  70     }
  71
  72     @Override
  73     protected TmfXYChartViewer createChartViewer(Composite parent) {
  74         CpuUsageXYViewer viewer = new CpuUsageXYViewer(parent);
  75         viewer.setSendTimeAlignSignals(true);
  76         fXYViewer = viewer;
  77         return viewer;
  78     }
  79
  80     @Override
  81     public TmfViewer createLeftChildViewer(Composite parent) {
  82         final CpuUsageComposite viewer = new CpuUsageComposite(parent);
  83
  84         /* Add selection listener to tree viewer */
  85         viewer.addSelectionChangeListener(new ISelectionChangedListener() {
  86             @Override
  87             public void selectionChanged(SelectionChangedEvent event) {
  88                 ISelection selection = event.getSelection();
  89                 if (selection instanceof IStructuredSelection) {
  90                     Object structSelection = ((IStructuredSelection) selection).getFirstElement();
  91                     if (structSelection instanceof CpuUsageEntry) {
  92                         CpuUsageEntry entry = (CpuUsageEntry) structSelection;
  93                         if (fTreeViewer != null) {
  94                             fTreeViewer.setSelectedThread(entry.getTid());
  95                         }
  96                         if (fXYViewer != null) {
  97                             fXYViewer.setSelectedThread(Long.valueOf(entry.getTid()));
  98                         }
  99                     }
 100                 }
 101             }
 102         });
 103
 104         viewer.getControl().addControlListener(new ControlAdapter() {
 105             @Override
 106             public void controlResized(ControlEvent e) {
 107                 super.controlResized(e);
 108             }
 109         });
 110
 111         fTreeViewer = viewer;
 112         return fTreeViewer;
 113     }
 114
 115     @Override
 116     public void setFocus() {
 117         if (fXYViewer != null) {
 118             fXYViewer.getControl().setFocus();
 119         }
 120     }
 121
 122     /**
 123      * Signal handler for when a cpu is selected
 124      *
 125      * @param signal
 126      *            the cpu being selected
 127      * @since 2.0
 128      */
 129     @TmfSignalHandler
 130     public void cpuSelect(TmfCpuSelectedSignal signal) {
 131         final @Nullable CpuUsageXYViewer xyViewer = fXYViewer;
 132         final @Nullable CpuUsageComposite treeViewer = fTreeViewer;
 133         if (xyViewer != null && treeViewer != null) {
 134             int core = signal.getCore();
 135             if (core >= 0) {
 136                 xyViewer.addCpu(core);
 137                 treeViewer.addCpu(core);
 138             } else {
 139                 xyViewer.clearCpu();
 140                 treeViewer.clearCpu();
 141             }
 142         }
 143     }
 144
 145 }