From a23de8c1330347b2ac2783ba171cd3c0fe2c0be5 Mon Sep 17 00:00:00 2001
From: Anton Leherbauer <anton.leherbauer@windriver.com>
Date: Mon, 2 May 2011 07:52:10 +0000
Subject: [PATCH] Bug 343948 - Shared ast is exposed for concurrent usage

---
 .../cdt/internal/ui/text/CReconcilingStrategy.java       | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CReconcilingStrategy.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CReconcilingStrategy.java
index b8bc79f3474..4cf9d23184e 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CReconcilingStrategy.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CReconcilingStrategy.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2009 IBM Corporation and others.
+ * Copyright (c) 2005, 2011 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -30,6 +30,8 @@ import org.eclipse.cdt.core.model.IWorkingCopy;
 import org.eclipse.cdt.ui.CUIPlugin;
 import org.eclipse.cdt.ui.IWorkingCopyManager;
 
+import org.eclipse.cdt.internal.core.dom.parser.ASTTranslationUnit;
+
 
 public class CReconcilingStrategy implements IReconcilingStrategy, IReconcilingStrategyExtension {
 
@@ -101,8 +103,11 @@ public class CReconcilingStrategy implements IReconcilingStrategy, IReconcilingS
 					if (ast == null || canceled) {
 						((ICReconcilingListener)fEditor).reconciled(null, forced, fProgressMonitor);
 					} else {
-						synchronized (ast) {
+						((ASTTranslationUnit) ast).beginExclusiveAccess();
+						try {
 							((ICReconcilingListener)fEditor).reconciled(ast, forced, fProgressMonitor);
+						} finally {
+							((ASTTranslationUnit) ast).endExclusiveAccess();
 						}
 					}
 					if (canceled) {