TMF: Consolidate some view code into the AbstractTimeGraphView
[deliverable/tracecompass.git] / org.eclipse.linuxtools.lttng2.kernel.ui / src / org / eclipse / linuxtools / internal / lttng2 / kernel / ui / views / resources / ResourcesPresentationProvider.java
index 3e3012bdba1844111614efe5e5ca8fb02ce99d8c..52ad1a023f590af73ccb9d532fa6255be52d38dd 100644 (file)
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2012 Ericsson
+ * Copyright (c) 2012, 2013 Ericsson, École Polytechnique de Montréal
  *
  * All rights reserved. This program and the accompanying materials are
  * made available under the terms of the Eclipse Public License v1.0 which
@@ -8,6 +8,7 @@
  *
  * Contributors:
  *   Patrick Tasse - Initial API and implementation
+ *   Geneviève Bastien - Move code to provide base classes for time graph view
  *******************************************************************************/
 
 package org.eclipse.linuxtools.internal.lttng2.kernel.ui.views.resources;
@@ -20,6 +21,7 @@ import org.eclipse.linuxtools.internal.lttng2.kernel.core.Attributes;
 import org.eclipse.linuxtools.internal.lttng2.kernel.core.StateValues;
 import org.eclipse.linuxtools.internal.lttng2.kernel.ui.Messages;
 import org.eclipse.linuxtools.internal.lttng2.kernel.ui.views.resources.ResourcesEntry.Type;
+import org.eclipse.linuxtools.lttng2.kernel.core.trace.LttngKernelTrace;
 import org.eclipse.linuxtools.tmf.core.exceptions.AttributeNotFoundException;
 import org.eclipse.linuxtools.tmf.core.exceptions.StateSystemDisposedException;
 import org.eclipse.linuxtools.tmf.core.exceptions.StateValueTypeException;
@@ -30,10 +32,16 @@ import org.eclipse.linuxtools.tmf.core.statevalue.ITmfStateValue;
 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.StateItem;
 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphPresentationProvider;
 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeEvent;
+import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
+import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.TimeEvent;
+import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.ITmfTimeGraphDrawingHelper;
 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils;
 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils.Resolution;
 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils.TimeFormat;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.GC;
 import org.eclipse.swt.graphics.RGB;
+import org.eclipse.swt.graphics.Rectangle;
 
 /**
  * Presentation provider for the Resource view, based on the generic TMF
@@ -43,222 +51,225 @@ import org.eclipse.swt.graphics.RGB;
  */
 public class ResourcesPresentationProvider extends TimeGraphPresentationProvider {
 
+    private long fLastThreadId = -1;
+
     private enum State {
-        UNKNOWN         (new RGB(100, 100, 100)),
-        IDLE            (new RGB(200, 200, 200)),
-        USERMODE        (new RGB(0, 200, 0)),
-        SYSCALL         (new RGB(0, 0, 200)),
-        IRQ             (new RGB(200, 100, 100)),
-        SOFT_IRQ        (new RGB(200, 150, 100)),
-        IRQ_ACTIVE      (new RGB(200, 100, 100)),
-        SOFT_IRQ_RAISED (new RGB(200, 200, 0)),
-        SOFT_IRQ_ACTIVE (new RGB(200, 150, 100));
+        IDLE             (new RGB(200, 200, 200)),
+        USERMODE         (new RGB(0,   200, 0)),
+        SYSCALL          (new RGB(0,     0, 200)),
+        IRQ              (new RGB(200,   0, 100)),
+        SOFT_IRQ         (new RGB(200, 150, 100)),
+        IRQ_ACTIVE       (new RGB(200,   0, 100)),
+        SOFT_IRQ_RAISED  (new RGB(200, 200, 0)),
+        SOFT_IRQ_ACTIVE  (new RGB(200, 150, 100));
 
         public final RGB rgb;
 
-        private State (RGB rgb) {
+        private State(RGB rgb) {
             this.rgb = rgb;
         }
     }
 
-    @Override
-    public String getStateTypeName() {
-        return Messages.ResourcesView_stateTypeName;
+    /**
+     * Default constructor
+     */
+    public ResourcesPresentationProvider() {
+        super();
     }
 
-    @Override
-    public StateItem[] getStateTable() {
-        StateItem[] stateTable = new StateItem[State.values().length];
-        for (int i = 0; i < stateTable.length; i++) {
-            State state = State.values()[i];
-            stateTable[i] = new StateItem(state.rgb, state.toString());
+    private static State[] getStateValues() {
+        return State.values();
+    }
+
+    private static State getEventState(ITimeEvent event) {
+        if (event instanceof TimeEvent && ((TimeEvent) event).hasValue()) {
+            TimeEvent tcEvent = (TimeEvent) event;
+
+            ResourcesEntry entry = (ResourcesEntry) event.getEntry();
+            int value = tcEvent.getValue();
+
+            if (entry.getType() == Type.CPU) {
+                if (value == StateValues.CPU_STATUS_IDLE) {
+                    return State.IDLE;
+                } else if (value == StateValues.CPU_STATUS_RUN_USERMODE) {
+                    return State.USERMODE;
+                } else if (value == StateValues.CPU_STATUS_RUN_SYSCALL) {
+                    return State.SYSCALL;
+                } else if (value == StateValues.CPU_STATUS_IRQ) {
+                    return State.IRQ;
+                } else if (value == StateValues.CPU_STATUS_SOFTIRQ) {
+                    return State.SOFT_IRQ;
+                }
+            } else if ((entry.getType() == Type.IRQ) && (tcEvent.hasValue()) && (value != ResourcesView.NO_VALUE_EVENT)) {
+                return State.IRQ_ACTIVE;
+            } else if ((entry.getType() == Type.SOFT_IRQ) && (tcEvent.hasValue()) && (value != ResourcesView.NO_VALUE_EVENT)) {
+                if (value == StateValues.SOFT_IRQ_RAISED) {
+                    return State.SOFT_IRQ_RAISED;
+                }
+                return State.SOFT_IRQ_ACTIVE;
+            }
         }
-        return stateTable;
+        return null;
     }
 
     @Override
     public int getStateTableIndex(ITimeEvent event) {
-        if (event instanceof ResourcesEvent) {
-            ResourcesEvent resourcesEvent = (ResourcesEvent) event;
-            if (resourcesEvent.getType() == Type.CPU) {
-                int status = resourcesEvent.getValue();
-                if (status == StateValues.CPU_STATUS_IDLE) {
-                    return State.IDLE.ordinal();
-                } else if (status == StateValues.CPU_STATUS_RUN_USERMODE) {
-                    return State.USERMODE.ordinal();
-                } else if (status == StateValues.CPU_STATUS_RUN_SYSCALL) {
-                    return State.SYSCALL.ordinal();
-                } else if (status == StateValues.CPU_STATUS_IRQ) {
-                    return State.IRQ.ordinal();
-                } else if (status == StateValues.CPU_STATUS_SOFTIRQ) {
-                    return State.SOFT_IRQ.ordinal();
-                }
-            } else if (resourcesEvent.getType() == Type.IRQ) {
-                return State.IRQ_ACTIVE.ordinal();
-            } else if (resourcesEvent.getType() == Type.SOFT_IRQ) {
-                int cpu = resourcesEvent.getValue();
-                if (cpu == StateValues.SOFT_IRQ_RAISED) {
-                    return State.SOFT_IRQ_RAISED.ordinal();
-                }
-                return State.SOFT_IRQ_ACTIVE.ordinal();
-            } else {
-                return -1; // NULL
+        State state = getEventState(event);
+        if (state != null) {
+            return state.ordinal();
+        }
+        if (event instanceof TimeEvent) {
+            TimeEvent tcEvent = (TimeEvent) event;
+            if (tcEvent.hasValue()) {
+                return INVISIBLE;
             }
         }
-        return State.UNKNOWN.ordinal();
+        return TRANSPARENT;
+    }
+
+    @Override
+    public StateItem[] getStateTable() {
+        State[] states = getStateValues();
+        StateItem[] stateTable = new StateItem[states.length];
+        for (int i = 0; i < stateTable.length; i++) {
+            State state = states[i];
+            stateTable[i] = new StateItem(state.rgb, state.toString());
+        }
+        return stateTable;
     }
 
     @Override
     public String getEventName(ITimeEvent event) {
-        if (event instanceof ResourcesEvent) {
-            ResourcesEvent resourcesEvent = (ResourcesEvent) event;
-            if (resourcesEvent.getType() == Type.CPU) {
-                int status = resourcesEvent.getValue();
-                if (status == StateValues.CPU_STATUS_IDLE) {
-                    return State.IDLE.toString();
-                } else if (status == StateValues.CPU_STATUS_RUN_USERMODE) {
-                    return State.USERMODE.toString();
-                } else if (status == StateValues.CPU_STATUS_RUN_SYSCALL) {
-                    return State.SYSCALL.toString();
-                } else if (status == StateValues.CPU_STATUS_IRQ) {
-                    return State.IRQ.toString();
-                } else if (status == StateValues.CPU_STATUS_SOFTIRQ) {
-                    return State.SOFT_IRQ.toString();
-                }
-            } else if (resourcesEvent.getType() == Type.IRQ) {
-                return State.IRQ_ACTIVE.toString();
-            } else if (resourcesEvent.getType() == Type.SOFT_IRQ) {
-                int cpu = resourcesEvent.getValue();
-                if (cpu == StateValues.SOFT_IRQ_RAISED) {
-                    return State.SOFT_IRQ_RAISED.toString();
-                }
-                return State.SOFT_IRQ_ACTIVE.toString();
-            } else {
+        State state = getEventState(event);
+        if (state != null) {
+            return state.toString();
+        }
+        if (event instanceof TimeEvent) {
+            TimeEvent tcEvent = (TimeEvent) event;
+            if (tcEvent.hasValue()) {
                 return null;
             }
         }
-        return State.UNKNOWN.toString();
+        return Messages.ResourcesView_multipleStates;
     }
 
     @Override
     public Map<String, String> getEventHoverToolTipInfo(ITimeEvent event, long hoverTime) {
 
         Map<String, String> retMap = new LinkedHashMap<String, String>();
-        if (event instanceof ResourcesEvent) {
+        if (event instanceof TimeEvent && ((TimeEvent) event).hasValue()) {
 
-            ResourcesEvent resourcesEvent = (ResourcesEvent) event;
+            TimeEvent tcEvent = (TimeEvent) event;
+            ResourcesEntry entry = (ResourcesEntry) event.getEntry();
 
-            // Check for IRQ or Soft_IRQ type
-            if (resourcesEvent.getType().equals(Type.IRQ) || resourcesEvent.getType().equals(Type.SOFT_IRQ)) {
+            if (tcEvent.hasValue()) {
+                // Check for IRQ or Soft_IRQ type
+                if (entry.getType().equals(Type.IRQ) || entry.getType().equals(Type.SOFT_IRQ)) {
 
-                // Get CPU of IRQ or SoftIRQ and provide it for the tooltip display
-                int cpu = resourcesEvent.getValue();
-                if (cpu >= 0) {
-                    retMap.put(Messages.ResourcesView_attributeCpuName, String.valueOf(cpu));
+                    // Get CPU of IRQ or SoftIRQ and provide it for the tooltip display
+                    int cpu = tcEvent.getValue();
+                    if (cpu >= 0) {
+                        retMap.put(Messages.ResourcesView_attributeCpuName, String.valueOf(cpu));
+                    }
                 }
-            }
 
-            // Check for type CPU
-            if (resourcesEvent.getType().equals(Type.CPU)) {
-                int status = resourcesEvent.getValue();
-
-                if (status == StateValues.CPU_STATUS_IRQ) {
-                    // In IRQ state get the IRQ that caused the interruption
-                    ResourcesEntry entry = (ResourcesEntry) event.getEntry();
-                    ITmfStateSystem ssq = entry.getTrace().getStateSystem();
-                    int cpu = entry.getId();
-
-                    ITmfStateSystem ss = entry.getTrace().getStateSystem();
-                    try {
-                        List<ITmfStateInterval> fullState = ss.queryFullState(event.getTime());
-                        List<Integer> irqQuarks = ss.getQuarks(Attributes.RESOURCES, Attributes.IRQS, "*"); //$NON-NLS-1$
-
-                        for (int irqQuark : irqQuarks) {
-                            if (fullState.get(irqQuark).getStateValue().unboxInt() == cpu) {
-                                ITmfStateInterval value = ssq.querySingleState(event.getTime(), irqQuark);
-                                if (!value.getStateValue().isNull()) {
-                                    int irq = Integer.parseInt(ssq.getAttributeName(irqQuark));
-                                    retMap.put(Messages.ResourcesView_attributeIrqName, String.valueOf(irq));
+                // Check for type CPU
+                else if (entry.getType().equals(Type.CPU)) {
+                    int status = tcEvent.getValue();
+
+                    if (status == StateValues.CPU_STATUS_IRQ) {
+                        // In IRQ state get the IRQ that caused the interruption
+                        ITmfStateSystem ss = entry.getTrace().getStateSystems().get(LttngKernelTrace.STATE_ID);
+                        int cpu = entry.getId();
+
+                        try {
+                            List<ITmfStateInterval> fullState = ss.queryFullState(event.getTime());
+                            List<Integer> irqQuarks = ss.getQuarks(Attributes.RESOURCES, Attributes.IRQS, "*"); //$NON-NLS-1$
+
+                            for (int irqQuark : irqQuarks) {
+                                if (fullState.get(irqQuark).getStateValue().unboxInt() == cpu) {
+                                    ITmfStateInterval value = ss.querySingleState(event.getTime(), irqQuark);
+                                    if (!value.getStateValue().isNull()) {
+                                        int irq = Integer.parseInt(ss.getAttributeName(irqQuark));
+                                        retMap.put(Messages.ResourcesView_attributeIrqName, String.valueOf(irq));
+                                    }
+                                    break;
                                 }
-                                break;
                             }
+                        } catch (AttributeNotFoundException e) {
+                            e.printStackTrace();
+                        } catch (TimeRangeException e) {
+                            e.printStackTrace();
+                        } catch (StateValueTypeException e) {
+                            e.printStackTrace();
+                        } catch (StateSystemDisposedException e) {
+                            /* Ignored */
                         }
-                    } catch (AttributeNotFoundException e) {
-                        e.printStackTrace();
-                    } catch (TimeRangeException e) {
-                        e.printStackTrace();
-                    } catch (StateValueTypeException e) {
-                        e.printStackTrace();
-                    } catch (StateSystemDisposedException e) {
-                        /* Ignored */
-                    }
-                } else if (status == StateValues.CPU_STATUS_SOFTIRQ) {
-                    // In SOFT_IRQ state get the SOFT_IRQ that caused the interruption
-                    ResourcesEntry entry = (ResourcesEntry) event.getEntry();
-                    ITmfStateSystem ssq = entry.getTrace().getStateSystem();
-                    int cpu = entry.getId();
-
-                    ITmfStateSystem ss = entry.getTrace().getStateSystem();
-                    try {
-                        List<ITmfStateInterval> fullState = ss.queryFullState(event.getTime());
-                        List<Integer> softIrqQuarks = ss.getQuarks(Attributes.RESOURCES, Attributes.SOFT_IRQS, "*"); //$NON-NLS-1$
-
-                        for (int softIrqQuark : softIrqQuarks) {
-                            if (fullState.get(softIrqQuark).getStateValue().unboxInt() == cpu) {
-                                ITmfStateInterval value = ssq.querySingleState(event.getTime(), softIrqQuark);
-                                if (!value.getStateValue().isNull()) {
-                                    int softIrq = Integer.parseInt(ssq.getAttributeName(softIrqQuark));
-                                    retMap.put(Messages.ResourcesView_attributeSoftIrqName, String.valueOf(softIrq));
+                    } else if (status == StateValues.CPU_STATUS_SOFTIRQ) {
+                        // In SOFT_IRQ state get the SOFT_IRQ that caused the interruption
+                        ITmfStateSystem ss = entry.getTrace().getStateSystems().get(LttngKernelTrace.STATE_ID);
+                        int cpu = entry.getId();
+
+                        try {
+                            List<ITmfStateInterval> fullState = ss.queryFullState(event.getTime());
+                            List<Integer> softIrqQuarks = ss.getQuarks(Attributes.RESOURCES, Attributes.SOFT_IRQS, "*"); //$NON-NLS-1$
+
+                            for (int softIrqQuark : softIrqQuarks) {
+                                if (fullState.get(softIrqQuark).getStateValue().unboxInt() == cpu) {
+                                    ITmfStateInterval value = ss.querySingleState(event.getTime(), softIrqQuark);
+                                    if (!value.getStateValue().isNull()) {
+                                        int softIrq = Integer.parseInt(ss.getAttributeName(softIrqQuark));
+                                        retMap.put(Messages.ResourcesView_attributeSoftIrqName, String.valueOf(softIrq));
+                                    }
+                                    break;
                                 }
-                                break;
                             }
+                        } catch (AttributeNotFoundException e) {
+                            e.printStackTrace();
+                        } catch (TimeRangeException e) {
+                            e.printStackTrace();
+                        } catch (StateValueTypeException e) {
+                            e.printStackTrace();
+                        } catch (StateSystemDisposedException e) {
+                            /* Ignored */
                         }
-                    } catch (AttributeNotFoundException e) {
-                        e.printStackTrace();
-                    } catch (TimeRangeException e) {
-                        e.printStackTrace();
-                    } catch (StateValueTypeException e) {
-                        e.printStackTrace();
-                    } catch (StateSystemDisposedException e) {
-                        /* Ignored */
-                    }
-                } else if (status == StateValues.CPU_STATUS_RUN_USERMODE || status == StateValues.CPU_STATUS_RUN_SYSCALL){
-                    // In running state get the current tid
-                    ResourcesEntry entry = (ResourcesEntry) event.getEntry();
-                    ITmfStateSystem ssq = entry.getTrace().getStateSystem();
-
-                    try {
-                        retMap.put(Messages.ResourcesView_attributeHoverTime, Utils.formatTime(hoverTime, TimeFormat.ABSOLUTE, Resolution.NANOSEC));
-                        int cpuQuark = entry.getQuark();
-                        int currentThreadQuark = ssq.getQuarkRelative(cpuQuark, Attributes.CURRENT_THREAD);
-                        ITmfStateInterval interval = ssq.querySingleState(hoverTime, currentThreadQuark);
-                        if (!interval.getStateValue().isNull()) {
-                            ITmfStateValue value = interval.getStateValue();
-                            int currentThreadId = value.unboxInt();
-                            retMap.put(Messages.ResourcesView_attributeTidName, Integer.toString(currentThreadId));
-                            int execNameQuark = ssq.getQuarkAbsolute(Attributes.THREADS, Integer.toString(currentThreadId), Attributes.EXEC_NAME);
-                            interval = ssq.querySingleState(hoverTime, execNameQuark);
+                    } else if (status == StateValues.CPU_STATUS_RUN_USERMODE || status == StateValues.CPU_STATUS_RUN_SYSCALL) {
+                        // In running state get the current tid
+                        ITmfStateSystem ssq = entry.getTrace().getStateSystems().get(LttngKernelTrace.STATE_ID);
+
+                        try {
+                            retMap.put(Messages.ResourcesView_attributeHoverTime, Utils.formatTime(hoverTime, TimeFormat.CALENDAR, Resolution.NANOSEC));
+                            int cpuQuark = entry.getQuark();
+                            int currentThreadQuark = ssq.getQuarkRelative(cpuQuark, Attributes.CURRENT_THREAD);
+                            ITmfStateInterval interval = ssq.querySingleState(hoverTime, currentThreadQuark);
                             if (!interval.getStateValue().isNull()) {
-                                value = interval.getStateValue();
-                                retMap.put(Messages.ResourcesView_attributeProcessName, value.unboxStr());
-                            }
-                            if (status == StateValues.CPU_STATUS_RUN_SYSCALL) {
-                                int syscallQuark = ssq.getQuarkAbsolute(Attributes.THREADS, Integer.toString(currentThreadId), Attributes.SYSTEM_CALL);
-                                interval = ssq.querySingleState(hoverTime, syscallQuark);
+                                ITmfStateValue value = interval.getStateValue();
+                                int currentThreadId = value.unboxInt();
+                                retMap.put(Messages.ResourcesView_attributeTidName, Integer.toString(currentThreadId));
+                                int execNameQuark = ssq.getQuarkAbsolute(Attributes.THREADS, Integer.toString(currentThreadId), Attributes.EXEC_NAME);
+                                interval = ssq.querySingleState(hoverTime, execNameQuark);
                                 if (!interval.getStateValue().isNull()) {
                                     value = interval.getStateValue();
-                                    retMap.put(Messages.ResourcesView_attributeSyscallName, value.unboxStr());
+                                    retMap.put(Messages.ResourcesView_attributeProcessName, value.unboxStr());
+                                }
+                                if (status == StateValues.CPU_STATUS_RUN_SYSCALL) {
+                                    int syscallQuark = ssq.getQuarkAbsolute(Attributes.THREADS, Integer.toString(currentThreadId), Attributes.SYSTEM_CALL);
+                                    interval = ssq.querySingleState(hoverTime, syscallQuark);
+                                    if (!interval.getStateValue().isNull()) {
+                                        value = interval.getStateValue();
+                                        retMap.put(Messages.ResourcesView_attributeSyscallName, value.unboxStr());
+                                    }
                                 }
                             }
+                        } catch (AttributeNotFoundException e) {
+                            e.printStackTrace();
+                        } catch (TimeRangeException e) {
+                            e.printStackTrace();
+                        } catch (StateValueTypeException e) {
+                            e.printStackTrace();
+                        } catch (StateSystemDisposedException e) {
+                            /* Ignored */
                         }
-                    } catch (AttributeNotFoundException e) {
-                        e.printStackTrace();
-                    } catch (TimeRangeException e) {
-                        e.printStackTrace();
-                    } catch (StateValueTypeException e) {
-                        e.printStackTrace();
-                    } catch (StateSystemDisposedException e) {
-                        /* Ignored */
                     }
                 }
             }
@@ -267,4 +278,96 @@ public class ResourcesPresentationProvider extends TimeGraphPresentationProvider
         return retMap;
     }
 
+    @Override
+    public void postDrawEvent(ITimeEvent event, Rectangle bounds, GC gc) {
+        ITmfTimeGraphDrawingHelper drawingHelper = getDrawingHelper();
+        if (bounds.width <= gc.getFontMetrics().getAverageCharWidth()) {
+            return;
+        }
+
+        if (!(event instanceof TimeEvent)) {
+            return;
+        }
+        TimeEvent tcEvent = (TimeEvent) event;
+        if (!tcEvent.hasValue()) {
+            return;
+        }
+
+        ResourcesEntry entry = (ResourcesEntry) event.getEntry();
+        if (!entry.getType().equals(Type.CPU)) {
+            return;
+        }
+
+        int status = tcEvent.getValue();
+        if (status != StateValues.CPU_STATUS_RUN_USERMODE && status != StateValues.CPU_STATUS_RUN_SYSCALL) {
+            return;
+        }
+
+        ITmfStateSystem ss = entry.getTrace().getStateSystems().get(LttngKernelTrace.STATE_ID);
+        long time = event.getTime();
+        try {
+            while (time < event.getTime() + event.getDuration()) {
+                int cpuQuark = entry.getQuark();
+                int currentThreadQuark = ss.getQuarkRelative(cpuQuark, Attributes.CURRENT_THREAD);
+                ITmfStateInterval tidInterval = ss.querySingleState(time, currentThreadQuark);
+                if (!tidInterval.getStateValue().isNull()) {
+                    ITmfStateValue value = tidInterval.getStateValue();
+                    int currentThreadId = value.unboxInt();
+                    if (status == StateValues.CPU_STATUS_RUN_USERMODE && currentThreadId != fLastThreadId) {
+                        int execNameQuark = ss.getQuarkAbsolute(Attributes.THREADS, Integer.toString(currentThreadId), Attributes.EXEC_NAME);
+                        ITmfStateInterval interval = ss.querySingleState(time, execNameQuark);
+                        if (!interval.getStateValue().isNull()) {
+                            value = interval.getStateValue();
+                            gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_WHITE));
+                            long startTime = Math.max(tidInterval.getStartTime(), event.getTime());
+                            long endTime = Math.min(tidInterval.getEndTime() + 1, event.getTime() + event.getDuration());
+                            if (drawingHelper.getXForTime(endTime) > bounds.x) {
+                                int x = Math.max(drawingHelper.getXForTime(startTime), bounds.x);
+                                int width = Math.min(drawingHelper.getXForTime(endTime), bounds.x + bounds.width) - x;
+                                int drawn = Utils.drawText(gc, value.unboxStr(), x + 1, bounds.y - 2, width - 1, true, true);
+                                if (drawn > 0) {
+                                    fLastThreadId = currentThreadId;
+                                }
+                            }
+                        }
+                    } else if (status == StateValues.CPU_STATUS_RUN_SYSCALL) {
+                        int syscallQuark = ss.getQuarkAbsolute(Attributes.THREADS, Integer.toString(currentThreadId), Attributes.SYSTEM_CALL);
+                        ITmfStateInterval interval = ss.querySingleState(time, syscallQuark);
+                        if (!interval.getStateValue().isNull()) {
+                            value = interval.getStateValue();
+                            gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_WHITE));
+                            long startTime = Math.max(tidInterval.getStartTime(), event.getTime());
+                            long endTime = Math.min(tidInterval.getEndTime() + 1, event.getTime() + event.getDuration());
+                            if (drawingHelper.getXForTime(endTime) > bounds.x) {
+                                int x = Math.max(drawingHelper.getXForTime(startTime), bounds.x);
+                                int width = Math.min(drawingHelper.getXForTime(endTime), bounds.x + bounds.width) - x;
+                                Utils.drawText(gc, value.unboxStr().substring(4), x + 1, bounds.y - 2, width - 1, true, true);
+                            }
+                        }
+                    }
+                }
+                time = tidInterval.getEndTime() + 1;
+                if (time < event.getTime() + event.getDuration()) {
+                    int x = drawingHelper.getXForTime(time);
+                    if (x >= bounds.x) {
+                        gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_GRAY));
+                        gc.drawLine(x, bounds.y + 1, x, bounds.y + bounds.height - 2);
+                    }
+                }
+            }
+        } catch (AttributeNotFoundException e) {
+            e.printStackTrace();
+        } catch (TimeRangeException e) {
+            e.printStackTrace();
+        } catch (StateValueTypeException e) {
+            e.printStackTrace();
+        } catch (StateSystemDisposedException e) {
+            /* Ignored */
+        }
+    }
+
+    @Override
+    public void postDrawEntry(ITimeGraphEntry entry, Rectangle bounds, GC gc) {
+        fLastThreadId = -1;
+    }
 }
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