2010-10-13 Francois Chouinard <fchouinard@gmail.com> Fix for Bug327711

	* src/org/eclipse/linuxtools/lttng/ui/views/common/AbsTimeUpdateView.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/controlflow/ControlFlowView.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramCanvas.java : Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvas.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/TimeTextGroup.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/project/ProjectView.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/resources/ResourcesView.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/statistics/StatisticsView.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/timeframe/SpinnerGroup.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/lttng/ui/views/timeframe/TimeFrameView.java: Added checks for disposed widget  
	* src/org/eclipse/linuxtools/tmf/experiment/TmfExperiment.java: Added checks for disposed widget
	* src/org/eclipse/linuxtools/tmf/request/TmfRequestExecutor.java: Added checks for disposed widget
	* src/org/eclipse/linuxtools/tmf/ui/viewers/events/TmfEventsTable.java: Added checks for disposed widget

16 files changed, 128 insertions, 64 deletions

diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/ChangeLog b/lttng/org.eclipse.linuxtools.lttng.ui/ChangeLog
index fbf94a6224..1532d63af1 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/ChangeLog
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/ChangeLog
@@ -1,5 +1,15 @@
 2010-10-13  Francois Chouinard  <fchouinard@gmail.com>
 
+	* src/org/eclipse/linuxtools/lttng/ui/views/common/AbsTimeUpdateView.java: Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/controlflow/ControlFlowView.java: Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramCanvas.java : Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvas.java: Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/TimeTextGroup.java: Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/project/ProjectView.java: Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/resources/ResourcesView.java: Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/statistics/StatisticsView.java: Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/timeframe/SpinnerGroup.java: Added checks for disposed widget  
+	* src/org/eclipse/linuxtools/lttng/ui/views/timeframe/TimeFrameView.java: Added checks for disposed widget  
 	* .options: TraceDebug options file
 	* src/org/eclipse/linuxtools/lttng/ui/LTTngUiPlugin.java (stop): Closes the trace log file 
 	* src/org/eclipse/linuxtools/lttng/ui/model/trange/TimeRangeComponent.java (toString): Added
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/common/AbsTimeUpdateView.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/common/AbsTimeUpdateView.java
index ba4f1eedbe..82340348cc 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/common/AbsTimeUpdateView.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/common/AbsTimeUpdateView.java
@@ -480,13 +480,15 @@ public abstract class AbsTimeUpdateView extends TmfView implements IRequestStatu
 	 * @param waitInd
 	 */
 	protected void waitCursor(final boolean waitInd) {
-		if (tsfviewer != null) {
+		if ((tsfviewer != null) && (!tsfviewer.getControl().isDisposed())) {
 			Display display = tsfviewer.getControl().getDisplay();
 
 			// Perform the updates on the UI thread
 			display.asyncExec(new Runnable() {
 				public void run() {
-					tsfviewer.waitCursor(waitInd);
+					if ((tsfviewer != null) && (!tsfviewer.getControl().isDisposed())) {
+						tsfviewer.waitCursor(waitInd);
+					}
 				}
 			});
 		}
@@ -596,14 +598,16 @@ public abstract class AbsTimeUpdateView extends TmfView implements IRequestStatu
 		if (complete) {
 			// reselect to original time
 			ParamsUpdater paramUpdater = getParamsUpdater();
-			if (paramUpdater != null && tsfviewer != null) {
+			if ((paramUpdater != null) && (tsfviewer != null) && (!tsfviewer.getControl().isDisposed())) {
 				final Long selTime = paramUpdater.getSelectedTime();
 				if (selTime != null) {
 					TraceDebug.debug("View: " + getName() + "\n\t\tRestoring the selected time to: " + selTime);
 					Display display = tsfviewer.getControl().getDisplay();
 					display.asyncExec(new Runnable() {
 						public void run() {
-							tsfviewer.setSelectedTime(selTime, false, this);
+							if ((tsfviewer != null) && (!tsfviewer.getControl().isDisposed())) {
+								tsfviewer.setSelectedTime(selTime, false, this);
+							}
 						}
 					});
 				}
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/controlflow/ControlFlowView.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/controlflow/ControlFlowView.java
index 8134f77908..631fa6944c 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/controlflow/ControlFlowView.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/controlflow/ControlFlowView.java
@@ -889,36 +889,41 @@ public class ControlFlowView extends AbsTimeUpdateView implements
 		
 		if(tableViewer != null) {
 			final Table table = tableViewer.getTable();
+			
+			// Ignore update if widget is disposed
+			if (table.isDisposed()) return;
+			
 			Display display = table.getDisplay();
-	
+
 			// Perform the updates on the UI thread)
 			display.asyncExec(new Runnable() {
 				public void run() {
-	
-					tableViewer.setInput(items); // This shall be the minimal
-					// initial
-					tableFilter = new ViewProcessFilter(tableViewer);
-					tableViewer.setFilters(new ViewerFilter[] { tableFilter });
-	
-					resizeTableColumns(table);
-					table.update();
-					tableViewer.refresh();
-	
-					tsfviewer.display(items, startBoundTime, endBoundTime,
-							updateTimeBounds);
-	
-					// validate visible boundaries
-					if (startVisibleWindow > -1 && endVisibleWindow > -1) {
-						tsfviewer.setSelectVisTimeWindow(startVisibleWindow,
-								endVisibleWindow, source);
-					}
-	
-					tsfviewer.resizeControls();
-	
-					// Adjust the size of the vertical scroll bar to fit the
-					// contents
-					if (scrollFrame != null) {
-						updateScrolls(scrollFrame);
+					if (!table.isDisposed()) {
+						tableViewer.setInput(items); // This shall be the minimal
+						// initial
+						tableFilter = new ViewProcessFilter(tableViewer);
+						tableViewer.setFilters(new ViewerFilter[] { tableFilter });
+
+						resizeTableColumns(table);
+						table.update();
+						tableViewer.refresh();
+
+						tsfviewer.display(items, startBoundTime, endBoundTime,
+								updateTimeBounds);
+
+						// validate visible boundaries
+						if (startVisibleWindow > -1 && endVisibleWindow > -1) {
+							tsfviewer.setSelectVisTimeWindow(startVisibleWindow,
+									endVisibleWindow, source);
+						}
+
+						tsfviewer.resizeControls();
+
+						// Adjust the size of the vertical scroll bar to fit the
+						// contents
+						if (scrollFrame != null) {
+							updateScrolls(scrollFrame);
+						}
 					}
 				}
 			});
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramCanvas.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramCanvas.java
index 64aadd5a37..69922cd69e 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramCanvas.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramCanvas.java
@@ -403,11 +403,13 @@ class AsyncCanvasRedrawer {
 	 * 
 	 */
 	public void asynchronousRedraw() {
-		if (parentCanvas != null) {
+		if ((parentCanvas != null) && (!parentCanvas.isDisposed())) {
 			Display display = parentCanvas.getDisplay();
 			display.asyncExec(new Runnable() {
 				public void run() {
-					parentCanvas.redraw();
+					if ((parentCanvas != null) && (!parentCanvas.isDisposed())) {
+						parentCanvas.redraw();
+					}
 				}
 			});
 		}
@@ -440,11 +442,13 @@ class AsyncCanvasRedrawer {
 	 * 
 	 */
 	public void asynchronousNotifyParentUpdatedInformation() {
-		if(parentCanvas != null) {
+		if((parentCanvas != null) && (!parentCanvas.isDisposed())) {
 			Display display = parentCanvas.getDisplay();
 			display.asyncExec(new Runnable() {
 				public void run() {
-					parentCanvas.notifyParentUpdatedInformation();
+					if((parentCanvas != null) && (!parentCanvas.isDisposed())) {
+						parentCanvas.notifyParentUpdatedInformation();
+					}
 				}
 			});
 		}
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvas.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvas.java
index 30c71cd9b0..31f7ba0ff4 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvas.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvas.java
@@ -470,10 +470,14 @@ public class ParentHistogramCanvas extends HistogramCanvas {
 	 * 
 	 */
 	public void asynchronousNotifyParentSelectionWindowChanged() {
+		// Ignore update if widget is disposed
+		if (this.isDisposed()) return;
+
 		Display display = this.getDisplay();
 		display.asyncExec(new Runnable() {
 			public void run() {
-				notifyParentSelectionWindowChanged();
+				if(!ParentHistogramCanvas.this.isDisposed())
+					notifyParentSelectionWindowChanged();
 			}
 		});
 	}	
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/TimeTextGroup.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/TimeTextGroup.java
index 543cc7b7f0..b2d8fefb88 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/TimeTextGroup.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/TimeTextGroup.java
@@ -436,12 +436,17 @@ class AsyncTimeTextGroupRedrawer {
 	 * @param newTime 	The new time to set
 	 */
 	public void asynchronousSetValue(long newTime) {
+		// Ignore setting of value if widget is disposed
+		if (parentTimeTextGroup.getParent().isDisposed()) return;
+		
 		final long tmpTime = newTime;
 		
 		Display display =  parentTimeTextGroup.getParent().getDisplay();
 		display.asyncExec(new Runnable() {
 			public void run() {
-				parentTimeTextGroup.setValue(tmpTime);
+				if (!parentTimeTextGroup.getParent().isDisposed()) {
+					parentTimeTextGroup.setValue(tmpTime);
+				}
 			}
 		});
 	}
@@ -454,12 +459,16 @@ class AsyncTimeTextGroupRedrawer {
 	 * @param newGroupName 	The new group name to set
 	 */
 	public void asynchronousSetGroupName(String newGroupName) {
+		// Ignore setting of name if widget is disposed
+		if (parentTimeTextGroup.getParent().isDisposed()) return;
+
 		final String tmpName = newGroupName;
-		
 		Display display =  parentTimeTextGroup.getParent().getDisplay();
 		display.asyncExec(new Runnable() {
 			public void run() {
-				parentTimeTextGroup.setGroupName(tmpName);
+				if (!parentTimeTextGroup.getParent().isDisposed()) {
+					parentTimeTextGroup.setGroupName(tmpName);
+				}
 			}
 		});
 	}
@@ -471,10 +480,15 @@ class AsyncTimeTextGroupRedrawer {
 	 * 
 	 */
 	public void asynchronousRedraw() {
+		// Ignore redraw if widget is disposed
+		if (parentTimeTextGroup.getParent().isDisposed()) return;
+
 		Display display =  parentTimeTextGroup.getParent().getDisplay();
 		display.asyncExec(new Runnable() {
 			public void run() {
-				parentTimeTextGroup.getParent().redraw();
+				if (!parentTimeTextGroup.getParent().isDisposed()) {
+					parentTimeTextGroup.getParent().redraw();
+				}
 			}
 		});
 	}
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/project/ProjectView.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/project/ProjectView.java
index bd559bc8cd..5751cb2cc8 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/project/ProjectView.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/project/ProjectView.java
@@ -72,7 +72,7 @@ public class ProjectView extends TmfView {
     // Perform updates on the UI thread
     private Runnable fViewRefresher = new Runnable() {
     	public void run() {
-    		if (fViewer != null) {
+    		if ((fViewer != null) && (!fViewer.getTree().isDisposed())) {
     			Object[] elements = fViewer.getExpandedElements();
     			fViewer.refresh();
     			fViewer.setExpandedElements(elements);
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/resources/ResourcesView.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/resources/ResourcesView.java
index 1a93bef79b..5cd34ebaf3 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/resources/ResourcesView.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/resources/ResourcesView.java
@@ -440,17 +440,21 @@ public class ResourcesView extends AbsTimeUpdateView implements
 	public void displayModel(final ITmfTimeAnalysisEntry[] items, final long startBoundTime,
 			final long endBoundTime, final boolean updateTimeBounds, final long startVisibleWindow,
 			final long endVisibleWindow, final Object source) {
-
+		
+		// Return if disposed
+		if ((tsfviewer == null) || (tsfviewer.getControl().isDisposed())) return;
+		
 		Display display = tsfviewer.getControl().getDisplay();
 		display.asyncExec(new Runnable() {
-
 			public void run() {
-				tsfviewer.display(items, startBoundTime, endBoundTime, updateTimeBounds);
-				// validate visible boundaries
-				if (startVisibleWindow > -1 && endVisibleWindow > -1) {
-					tsfviewer.setSelectVisTimeWindow(startVisibleWindow, endVisibleWindow, source);
+				if ((tsfviewer != null) && (!tsfviewer.getControl().isDisposed())) {
+					tsfviewer.display(items, startBoundTime, endBoundTime, updateTimeBounds);
+					// validate visible boundaries
+					if (startVisibleWindow > -1 && endVisibleWindow > -1) {
+						tsfviewer.setSelectVisTimeWindow(startVisibleWindow, endVisibleWindow, source);
+					}
+					tsfviewer.resizeControls();
 				}
-				tsfviewer.resizeControls();
 			}
 		});
 	}
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/statistics/StatisticsView.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/statistics/StatisticsView.java
index 6f4aff6508..99787b18e4 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/statistics/StatisticsView.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/statistics/StatisticsView.java
@@ -493,7 +493,7 @@ public class StatisticsView extends AbsTimeUpdateView {
 	 */
 	@Override
 	protected void waitCursor(final boolean waitInd) {
-		if (treeViewer == null) {
+		if ((treeViewer == null) || (treeViewer.getTree().isDisposed())) {
 			return;
 		}
 
@@ -505,11 +505,13 @@ public class StatisticsView extends AbsTimeUpdateView {
 		// Perform the updates on the UI thread
 		display.asyncExec(new Runnable() {
 			public void run() {
-				Cursor cursor = null; /* indicates default */
-				if (waitInd) {
-					cursor = fwaitCursor;
+				if ((treeViewer != null) && (!treeViewer.getTree().isDisposed())) {
+					Cursor cursor = null; /* indicates default */
+					if (waitInd) {
+						cursor = fwaitCursor;
+					}
+					treeViewer.getControl().setCursor(cursor);
 				}
-				treeViewer.getControl().setCursor(cursor);
 			}
 		});
 	}
@@ -517,12 +519,13 @@ public class StatisticsView extends AbsTimeUpdateView {
 	@Override
 	public void ModelUpdatePrep(TmfTimeRange timeRange, boolean clearAllData) {
 		Object input = treeViewer.getInput();
-		if (input != null && input instanceof StatisticsTreeNode) {
+		if ((input != null) && (input instanceof StatisticsTreeNode) && (!treeViewer.getTree().isDisposed())) {
 			((StatisticsTreeNode) input).reset();
 			treeViewer.getTree().getDisplay().asyncExec(new Runnable() {
 				// @Override
 				public void run() {
-					treeViewer.refresh();
+					if (!treeViewer.getTree().isDisposed())
+						treeViewer.refresh();
 				}
 			});
 		}
@@ -530,13 +533,17 @@ public class StatisticsView extends AbsTimeUpdateView {
 
 	@Override
 	public void modelInputChanged(ILttngSyntEventRequest request, boolean complete) {
+		// Ignore update if disposed
+		if (treeViewer.getTree().isDisposed()) return;
+		
 		treeViewer.getTree().getDisplay().asyncExec(new Runnable() {
 			// @Override
 			public void run() {
-				treeViewer.refresh();
+				if (!treeViewer.getTree().isDisposed())
+					treeViewer.refresh();
 			}
 		});
-	}
+		}
 
 	/*
 	 * (non-Javadoc)
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/timeframe/SpinnerGroup.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/timeframe/SpinnerGroup.java
index be2a5e7622..167cecd421 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/timeframe/SpinnerGroup.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/timeframe/SpinnerGroup.java
@@ -275,7 +275,9 @@ public class SpinnerGroup {
      * Perform the update on the UI thread
      */
     public void updateSpinners() {
-
+    	// Ignore update if disposed
+    	if (seconds.isDisposed()) return;
+    	
         seconds.getDisplay().asyncExec(new Runnable() {
 			public void run() {
 				if (!seconds.isDisposed() && !nanosec.isDisposed()) {
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/timeframe/TimeFrameView.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/timeframe/TimeFrameView.java
index dd234847e1..90e3c1f407 100644
--- a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/timeframe/TimeFrameView.java
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/timeframe/TimeFrameView.java
@@ -239,6 +239,9 @@ public class TimeFrameView extends TmfView {
      */
     private void updateSlider(TmfTimeRange range, TmfTimestamp timestamp) {
 
+    	// Ignore update if disposed
+    	if (fSlider.isDisposed()) return;
+    	
         // Determine the new relative position
     	byte scale = range.getEndTime().getScale();
         long total    = range.getStartTime().getAdjustment(range.getEndTime(), scale);
diff --git a/lttng/org.eclipse.linuxtools.tmf.ui/ChangeLog b/lttng/org.eclipse.linuxtools.tmf.ui/ChangeLog
index c37134c010..2affacd40a 100644
--- a/lttng/org.eclipse.linuxtools.tmf.ui/ChangeLog
+++ b/lttng/org.eclipse.linuxtools.tmf.ui/ChangeLog
@@ -1,5 +1,6 @@
 2010-10-13  Francois Chouinard  <fchouinard@gmail.com>
 
+	* src/org/eclipse/linuxtools/tmf/ui/viewers/events/TmfEventsTable.java: Added checks for disposed widget
 	* src/org/eclipse/linuxtools/tmf/ui/viewers/events/TmfEventsTable.java: Fixed comments
 
 2010-09-17  Francois Chouinard  <fchouinard@gmail.com>
diff --git a/lttng/org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/viewers/events/TmfEventsTable.java b/lttng/org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/viewers/events/TmfEventsTable.java
index 5741ebc4b9..fded4c7039 100644
--- a/lttng/org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/viewers/events/TmfEventsTable.java
+++ b/lttng/org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/viewers/events/TmfEventsTable.java
@@ -271,7 +271,7 @@ public class TmfEventsTable extends TmfComponent {
     
     @TmfSignalHandler
     public void experimentUpdated(TmfExperimentUpdatedSignal signal) {
-        if (signal.getExperiment() != fTrace) return;
+        if ((signal.getExperiment() != fTrace) || fTable.isDisposed()) return;
         // Perform the refresh on the UI thread
         fTable.getDisplay().asyncExec(new Runnable() {
             public void run() {
@@ -285,7 +285,7 @@ public class TmfEventsTable extends TmfComponent {
     
     @TmfSignalHandler
     public void traceUpdated(TmfTraceUpdatedSignal signal) {
-        if (signal.getTrace() != fTrace) return;
+        if ((signal.getTrace() != fTrace ) || fTable.isDisposed()) return;
         // Perform the refresh on the UI thread
         fTable.getDisplay().asyncExec(new Runnable() {
             public void run() {
@@ -301,7 +301,7 @@ public class TmfEventsTable extends TmfComponent {
     private boolean fRefreshPending = false;
     @TmfSignalHandler
     public synchronized void rangeSynched(TmfRangeSynchSignal signal) {
-        if (!fRefreshPending) {
+        if (!fRefreshPending && !fTable.isDisposed()) {
             // Perform the refresh on the UI thread
             fRefreshPending = true;
             fTable.getDisplay().asyncExec(new Runnable() {
@@ -317,7 +317,7 @@ public class TmfEventsTable extends TmfComponent {
     
     @TmfSignalHandler
     public void currentTimeUpdated(final TmfTimeSynchSignal signal) {
-        if (signal.getSource() != fTable && fTrace != null) {
+        if (signal.getSource() != fTable && fTrace != null && !fTable.isDisposed()) {
             Job job = new Job("seeking...") {
                 @Override
                 protected IStatus run(IProgressMonitor monitor) {
@@ -325,6 +325,9 @@ public class TmfEventsTable extends TmfComponent {
                     // Perform the updates on the UI thread
                     fTable.getDisplay().asyncExec(new Runnable() {
                         public void run() {
+                        	// Return if table is disposed
+                        	if (fTable.isDisposed()) return;
+                        	
                             fTable.setSelection(index);
                             // The timestamp might not correspond to an actual event
                             // and the selection will point to the next experiment event.
diff --git a/lttng/org.eclipse.linuxtools.tmf/ChangeLog b/lttng/org.eclipse.linuxtools.tmf/ChangeLog
index abe529b7a3..223bbe1e7f 100644
--- a/lttng/org.eclipse.linuxtools.tmf/ChangeLog
+++ b/lttng/org.eclipse.linuxtools.tmf/ChangeLog
@@ -1,5 +1,7 @@
 2010-10-13  Francois Chouinard  <fchouinard@gmail.com>
 
+	* src/org/eclipse/linuxtools/tmf/experiment/TmfExperiment.java: Added checks for disposed widget
+	* src/org/eclipse/linuxtools/tmf/request/TmfRequestExecutor.java: Added checks for disposed widget
 	* src/org/eclipse/linuxtools/tmf/experiment/TmfExperiment.java: Fixed comments
 	* src/org/eclipse/linuxtools/tmf/request/TmfDataRequest.java: Added waitForStart() API 
 	* src/org/eclipse/linuxtools/tmf/event/TmfEventContent.java: Added setEvent() 
diff --git a/lttng/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/experiment/TmfExperiment.java b/lttng/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/experiment/TmfExperiment.java
index 74899f2c31..d9dff18c31 100644
--- a/lttng/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/experiment/TmfExperiment.java
+++ b/lttng/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/experiment/TmfExperiment.java
@@ -148,7 +148,7 @@ public class TmfExperiment<T extends TmfEvent> extends TmfEventProvider<T> imple
      * Clears the experiment
      */
     @Override
-	public void dispose() {
+	public synchronized void dispose() {
     	if (fTraces != null) {
     		for (ITmfTrace trace : fTraces) {
     			trace.dispose();
diff --git a/lttng/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/request/TmfRequestExecutor.java b/lttng/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/request/TmfRequestExecutor.java
index d6245819ca..91a9318f04 100644
--- a/lttng/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/request/TmfRequestExecutor.java
+++ b/lttng/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/request/TmfRequestExecutor.java
@@ -67,7 +67,7 @@ public class TmfRequestExecutor implements Executor {
 	/**
 	 * @return the shutdown state (i.e. if it is accepting new requests)
 	 */
-	public boolean isShutdown() {
+	public synchronized boolean isShutdown() {
 		return fExecutor.isShutdown();
 	}
 	
@@ -115,7 +115,8 @@ public class TmfRequestExecutor implements Executor {
 	 */
 	protected synchronized void scheduleNext() {
 		if ((fCurrentRequest = fRequestQueue.poll()) != null) {
-			fExecutor.execute(fCurrentRequest);
+			if (!fExecutor.isShutdown())
+				fExecutor.execute(fCurrentRequest);
 		}
 	}