lttng/org.eclipse.tracecompass.lttng2.kernel.ui/src/org/eclipse/tracecompass/internal/lttng2/kernel/ui/views/vm/vcpuview/VirtualMachinePresentationProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2016 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.views.vm.vcpuview;
  11
  12 import org.eclipse.jdt.annotation.Nullable;
  13 import org.eclipse.swt.SWT;
  14 import org.eclipse.swt.graphics.Color;
  15 import org.eclipse.swt.graphics.GC;
  16 import org.eclipse.swt.graphics.RGB;
  17 import org.eclipse.swt.graphics.Rectangle;
  18 import org.eclipse.swt.widgets.Display;
  19 import org.eclipse.tracecompass.analysis.os.linux.core.kernel.StateValues;
  20 import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.vm.VcpuStateValues;
  21 import org.eclipse.tracecompass.internal.lttng2.kernel.ui.views.vm.vcpuview.VirtualMachineCommon.Type;
  22 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.StateItem;
  23 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.TimeGraphPresentationProvider;
  24 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeEvent;
  25 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.NullTimeEvent;
  26 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeEvent;
  27
  28 /**
  29  * Presentation provider for the Virtual Machine view, based on the generic TMF
  30  * presentation provider.
  31  *
  32  * @author Mohamad Gebai
  33  */
  34 public class VirtualMachinePresentationProvider extends TimeGraphPresentationProvider {
  35
  36     private static final int ALPHA = 70;
  37
  38     /*
  39      * TODO: Some of it is copy-pasted from the control flow presentation
  40      * provider because it actually is the same data as from the control flow
  41      * view. Ideally, we should reuse what is there instead of rewriting it here
  42      */
  43     private enum State {
  44         UNKNOWN(new RGB(100, 100, 100)),
  45         IDLE(new RGB(200, 200, 200)),
  46         USERMODE(new RGB(0, 200, 0)),
  47         WAIT_VMM(new RGB(200, 0, 0)),
  48         VCPU_PREEMPTED(new RGB(120, 40, 90)),
  49         THREAD_UNKNOWN(new RGB(100, 100, 100)),
  50         THREAD_WAIT_BLOCKED(new RGB(200, 200, 0)),
  51         THREAD_WAIT_FOR_CPU(new RGB(200, 100, 0)),
  52         THREAD_USERMODE(new RGB(0, 200, 0)),
  53         THREAD_SYSCALL(new RGB(0, 0, 200)),
  54         THREAD_INTERRUPTED(new RGB(200, 0, 100));
  55
  56         private final RGB fRgb;
  57
  58         private State(RGB rgb) {
  59             fRgb = rgb;
  60         }
  61     }
  62
  63     /**
  64      * Default constructor
  65      */
  66     public VirtualMachinePresentationProvider() {
  67         super();
  68     }
  69
  70     private static State[] getStateValues() {
  71         return State.values();
  72     }
  73
  74     private static State getStateForVcpu(int value) {
  75         if ((value & VcpuStateValues.VCPU_PREEMPT) > 0) {
  76             return State.VCPU_PREEMPTED;
  77         } else if ((value & VcpuStateValues.VCPU_VMM) > 0) {
  78             return State.WAIT_VMM;
  79         } else if (value == 2) {
  80             return State.USERMODE;
  81         } else if (value == 1) {
  82             return State.IDLE;
  83         } else {
  84             return State.UNKNOWN;
  85         }
  86     }
  87
  88     private static @Nullable State getStateForThread(int value) {
  89         if (value == VcpuStateValues.VCPU_PREEMPT) {
  90             return null;
  91         }
  92         switch (value) {
  93         case StateValues.PROCESS_STATUS_RUN_USERMODE:
  94             return State.THREAD_USERMODE;
  95         case StateValues.PROCESS_STATUS_RUN_SYSCALL:
  96             return State.THREAD_SYSCALL;
  97         case StateValues.PROCESS_STATUS_WAIT_FOR_CPU:
  98             return State.THREAD_WAIT_FOR_CPU;
  99         case StateValues.PROCESS_STATUS_WAIT_BLOCKED:
 100             return State.THREAD_WAIT_BLOCKED;
 101         case StateValues.PROCESS_STATUS_INTERRUPTED:
 102             return State.THREAD_INTERRUPTED;
 103         case StateValues.PROCESS_STATUS_UNKNOWN:
 104         case StateValues.PROCESS_STATUS_WAIT_UNKNOWN:
 105             return State.THREAD_UNKNOWN;
 106         default:
 107             return null;
 108         }
 109     }
 110
 111     private static @Nullable State getEventState(TimeEvent event) {
 112         if (event.hasValue()) {
 113             VirtualMachineViewEntry entry = (VirtualMachineViewEntry) event.getEntry();
 114             int value = event.getValue();
 115
 116             if (entry.getType() == Type.VCPU) {
 117                 return getStateForVcpu(value);
 118             } else if (entry.getType() == Type.THREAD) {
 119                 return getStateForThread(value);
 120             }
 121         }
 122         return null;
 123     }
 124
 125     @Override
 126     public int getStateTableIndex(@Nullable ITimeEvent event) {
 127         if (event == null) {
 128             return TRANSPARENT;
 129         }
 130         State state = getEventState((TimeEvent) event);
 131         if (state != null) {
 132             return state.ordinal();
 133         }
 134         if (event instanceof NullTimeEvent) {
 135             return INVISIBLE;
 136         }
 137         return TRANSPARENT;
 138     }
 139
 140     @Override
 141     public StateItem[] getStateTable() {
 142         State[] states = getStateValues();
 143         StateItem[] stateTable = new StateItem[states.length];
 144         for (int i = 0; i < stateTable.length; i++) {
 145             State state = states[i];
 146             stateTable[i] = new StateItem(state.fRgb, state.toString());
 147         }
 148         return stateTable;
 149     }
 150
 151     @Override
 152     public @Nullable String getEventName(@Nullable ITimeEvent event) {
 153         if (event == null) {
 154             return null;
 155         }
 156         State state = getEventState((TimeEvent) event);
 157         if (state != null) {
 158             return state.toString();
 159         }
 160         if (event instanceof NullTimeEvent) {
 161             return null;
 162         }
 163         return Messages.VmView_multipleStates;
 164     }
 165
 166     @Override
 167     public void postDrawEvent(@Nullable ITimeEvent event, @Nullable Rectangle bounds, @Nullable GC gc) {
 168         if (bounds == null || gc == null || !(event instanceof TimeEvent)) {
 169             return;
 170         }
 171         boolean visible = bounds.width == 0 ? false : true;
 172         if (!visible) {
 173             return;
 174         }
 175         TimeEvent ev = (TimeEvent) event;
 176         /*
 177          * FIXME: There seems to be a bug when multiple events should be drawn
 178          * under a alpha event. See FIXME comment in
 179          * VirtualMachineView#getEventList
 180          */
 181         if (ev.hasValue()) {
 182             VirtualMachineViewEntry entry = (VirtualMachineViewEntry) event.getEntry();
 183
 184             if (entry.getType() == Type.THREAD) {
 185                 int value = ev.getValue();
 186                 if ((value & VcpuStateValues.VCPU_PREEMPT) != 0) {
 187                     /*
 188                      * If the status was preempted at this time, draw an alpha
 189                      * over this state
 190                      */
 191                     Color alphaColor = Display.getDefault().getSystemColor(SWT.COLOR_RED);
 192
 193                     int alpha = gc.getAlpha();
 194                     Color background = gc.getBackground();
 195                     // fill all rect area
 196                     gc.setBackground(alphaColor);
 197                     gc.setAlpha(ALPHA);
 198                     gc.fillRectangle(bounds);
 199
 200                     gc.setBackground(background);
 201                     gc.setAlpha(alpha);
 202                 }
 203             }
 204         }
 205     }
 206
 207 }