Abort variable refresh if debuggee is stepped

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@2810 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Debugger.AddIn.csproj

@@ -73,6 +73,7 @@
     <Compile Include="Src\TreeModel\ISetText.cs" />
     <Compile Include="Src\TreeModel\ChildNodesOfObject.cs" />
     <Compile Include="Src\TreeModel\StackFrameNode.cs" />
+    <Compile Include="Src\TreeModel\Util.cs" />
     <None Include="COPYING" />
   </ItemGroup>
   <ItemGroup>

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Pads/LocalVarPad.cs

@@ -106,6 +106,14 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 			}
 		}
 		
+		public TreeViewAdv LocalVarList {
+			get { return localVarList; }
+		}
+		
+		public Process Process {
+			get { return debuggedProcess; }
+		}
+		
 		protected override void InitializeComponents()
 		{
 			localVarList = new TreeViewAdv();
@@ -167,10 +175,13 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 		public override void RefreshPad()
 		{
 			DateTime start = Debugger.Util.HighPrecisionTimer.Now;
-			if (debuggedProcess != null && debuggedProcess.SelectedStackFrame != null) {
-				TreeViewNode.SetContentRecursive(localVarList, localVarList.Root.Children, new StackFrameNode(debuggedProcess.SelectedStackFrame).ChildNodes);
-			} else {
-				TreeViewNode.SetContentRecursive(localVarList, localVarList.Root.Children, null);
+			try {
+				if (debuggedProcess != null && debuggedProcess.SelectedStackFrame != null) {
+					TreeViewNode.SetContentRecursive(this, localVarList.Root.Children, new StackFrameNode(debuggedProcess.SelectedStackFrame).ChildNodes);
+				} else {
+					TreeViewNode.SetContentRecursive(this, localVarList.Root.Children, null);
+				}
+			} catch(AbortedBecauseDebugeeStateExpiredException) {
 			}
 			DateTime end = Debugger.Util.HighPrecisionTimer.Now;
 			LoggingService.InfoFormatted("Local Variables pad refreshed ({0} ms)", (end - start).TotalMilliseconds);

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/TreeModel/Adapters/TreeViewNode.cs

@@ -13,6 +13,7 @@ using System.Windows.Forms;
 using Aga.Controls.Tree;
 
 using ICSharpCode.Core;
+using ICSharpCode.SharpDevelop.Gui.Pads;
 
 namespace Debugger.AddIn.TreeModel
 {
@@ -20,6 +21,7 @@ namespace Debugger.AddIn.TreeModel
 	{
 		static Dictionary<string, bool> expandedNodes = new Dictionary<string, bool>();
 		
+		LocalVarPad localVarPad;
 		AbstractNode content;
 		
 		bool childsLoaded;
@@ -38,8 +40,9 @@ namespace Debugger.AddIn.TreeModel
 			}
 		}
 		
-		public TreeViewNode(TreeViewAdv tree, AbstractNode content): base(tree, new object())
+		public TreeViewNode(LocalVarPad localVarPad, AbstractNode content): base(localVarPad.LocalVarList, new object())
 		{
+			this.localVarPad = localVarPad;
 			SetContentRecursive(content);
 		}
 		
@@ -56,13 +59,19 @@ namespace Debugger.AddIn.TreeModel
 				this.Collapse();
 			}
 			this.Tree.Invalidate();
+			// Repaint and process user commands
+			DebugeeState state = localVarPad.Process.DebugeeState;
+			Util.DoEvents();
+			if (state.HasExpired) {
+				LoggingService.Info("Debugger: Aborted refresh because debugee state expired");
+				throw new AbortedBecauseDebugeeStateExpiredException();
+			}
 		}
 		
-		public static void SetContentRecursive(TreeViewAdv tree, IList<TreeNodeAdv> childNodes, IEnumerable<AbstractNode> contentEnum)
+		public static void SetContentRecursive(LocalVarPad localVarPad, IList<TreeNodeAdv> childNodes, IEnumerable<AbstractNode> contentEnum)
 		{
 			contentEnum = contentEnum ?? new AbstractNode[0];
 			
-			DoEvents();
 			int index = 0;
 			foreach(AbstractNode content in contentEnum) {
 				// Add or overwrite existing items
@@ -71,9 +80,8 @@ namespace Debugger.AddIn.TreeModel
 					((TreeViewNode)childNodes[index]).SetContentRecursive(content);
 				} else {
 					// Add
-					childNodes.Add(new TreeViewNode(tree, content));
+					childNodes.Add(new TreeViewNode(localVarPad, content));
 				}
-				DoEvents();
 				index++;
 			}
 			int count = index;
@@ -81,20 +89,22 @@ namespace Debugger.AddIn.TreeModel
 			while(childNodes.Count > count) {
 				childNodes.RemoveAt(count);
 			}
-			DoEvents();
 		}
 		
 		protected override void OnExpanding()
 		{
 			base.OnExpanding();
-			LoadChilds();
+			try {
+				LoadChilds();
+			} catch (AbortedBecauseDebugeeStateExpiredException) {
+			}
 		}
 		
 		void LoadChilds()
 		{
 			if (!childsLoaded) {
 				childsLoaded = true;
-				SetContentRecursive(this.Tree, this.Children, this.Content.ChildNodes);
+				SetContentRecursive(localVarPad, this.Children, this.Content.ChildNodes);
 				this.IsExpandedOnce = true;
 			}
 		}
@@ -115,27 +125,5 @@ namespace Debugger.AddIn.TreeModel
 			base.OnCollapsed();
 			expandedNodes[FullName] = false;
 		}
-		
-		
-		static DateTime nextDoEventsTime = Debugger.Util.HighPrecisionTimer.Now;
-		const double workLoad    = 0.75; // Fraction of getting variables vs. repainting
-		const double maxFPS      = 30;   // this prevents too much drawing on good machine
-		const double maxWorkTime = 250;  // ms  this ensures minimal response on bad machine
-		
-		static void DoEvents()
-		{
-			if (Debugger.Util.HighPrecisionTimer.Now > nextDoEventsTime) {
-				DateTime start = Debugger.Util.HighPrecisionTimer.Now;
-				Application.DoEvents();
-				DateTime end = Debugger.Util.HighPrecisionTimer.Now;
-				double doEventsDuration = (end - start).TotalMilliseconds;
-				double minWorkTime = 1000 / maxFPS - doEventsDuration; // ms
-				double workTime = (doEventsDuration / (1 - workLoad)) * workLoad;
-				workTime = Math.Max(minWorkTime, Math.Min(maxWorkTime, workTime)); // Clamp
-				nextDoEventsTime = end.AddMilliseconds(workTime);
-				double fps = 1000 / (doEventsDuration + workTime);
-				// LoggingService.InfoFormatted("Rendering: {0} ms => work budget: {1} ms ({2:f1} FPS)", doEventsDuration, workTime, fps);
-			}
-		}
 	}
 }

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/TreeModel/Util.cs

@@ -0,0 +1,43 @@
+// <file>
+//     <copyright license="BSD-new" see="prj:///COPYING"/>
+//     <owner name="David Srbecký" email="dsrbecky@gmail.com"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.Windows.Forms;
+
+namespace Debugger.AddIn.TreeModel
+{
+	public static partial class Util
+	{
+		static DateTime nextDoEventsTime = Debugger.Util.HighPrecisionTimer.Now;
+		const double workLoad    = 0.75; // Fraction of getting variables vs. repainting
+		const double maxFPS      = 30;   // this prevents too much drawing on good machine
+		const double maxWorkTime = 250;  // ms  this ensures minimal response on bad machine
+		
+		public static void DoEvents()
+		{
+			if (Debugger.Util.HighPrecisionTimer.Now > nextDoEventsTime) {
+				DateTime start = Debugger.Util.HighPrecisionTimer.Now;
+				Application.DoEvents();
+				DateTime end = Debugger.Util.HighPrecisionTimer.Now;
+				double doEventsDuration = (end - start).TotalMilliseconds;
+				double minWorkTime = 1000 / maxFPS - doEventsDuration; // ms
+				double workTime = (doEventsDuration / (1 - workLoad)) * workLoad;
+				workTime = Math.Max(minWorkTime, Math.Min(maxWorkTime, workTime)); // Clamp
+				nextDoEventsTime = end.AddMilliseconds(workTime);
+				double fps = 1000 / (doEventsDuration + workTime);
+				// LoggingService.InfoFormatted("Rendering: {0} ms => work budget: {1} ms ({2:f1} FPS)", doEventsDuration, workTime, fps);
+			}
+		}
+	}
+	
+	public class AbortedBecauseDebugeeStateExpiredException: System.Exception
+	{
+		public AbortedBecauseDebugeeStateExpiredException(): base()
+		{
+			
+		}
+	}
+}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/Expressions/Expression.Evaluate.cs

@@ -19,7 +19,8 @@ namespace Debugger
 	{
 		public Value Evaluate(StackFrame context)
 		{
-			// context.Process.TraceMessage("Evaluating " + this.Code);
+			if (context == null) throw new ArgumentNullException("context");
+			
 			EvaluateAstVisitor astVisitor = new EvaluateAstVisitor(context);
 			Value result = (Value)this.AbstractSynatxTree.AcceptVisitor(astVisitor, null);
 			context.Process.TraceMessage("Evaluated " + this.Code);