fixed threading bug in QueryCompiler

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@3941 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Profiler/Controller/Queries/QueryCompiler.cs

@@ -76,6 +76,7 @@ namespace ICSharpCode.Profiler.Controller.Queries
 			if (string.IsNullOrEmpty(this.currentQuery))
 				return false;
 			
+			lock (queryCache) {
 				if (!queryCache.ContainsKey(this.currentQuery)) {
 					string code = text + PreprocessString(currentQuery) + textEnd;
 					CompilerResults results = csc.CompileAssemblyFromSource(GetParameters(), code);
@@ -88,6 +89,7 @@ namespace ICSharpCode.Profiler.Controller.Queries
 				} else {
 					report(new List<CompilerError>().AsEnumerable()); // clear errors list
 				}
+			}
 
 			return true;
 		}

src/AddIns/Misc/Profiler/Frontend/Controls/QueryView.xaml.cs

@@ -148,9 +148,10 @@ namespace ICSharpCode.Profiler.Controls
 			layer.Add(ad);
 			int rangeStart = RangeStart;
 			int rangeEnd = RangeEnd;
+			string query = this.CurrentQuery;
 			
 			ProfilingDataProvider provider = Provider;
-			QueryCompiler compiler = new QueryCompiler(Reporter, this.CurrentQuery);
+			QueryCompiler compiler = new QueryCompiler(Reporter, query);
 			ringDiagram.SelectedRoot = null;
 			
 			task.Execute(() => LoadWorker(provider, compiler, rangeStart, rangeEnd),