From 5229a3c51ce8f87c7833b3ae49a6f65ddb377ce9 Mon Sep 17 00:00:00 2001
From: Oren Hurvitz <orenh@kitely.com>
Date: Thu, 10 Jul 2014 16:00:06 +0300
Subject: [PATCH] Added locking in AccessModule to prevent possible errors when
 shutting down a simulator that has >1 region

---
 .../Region/CoreModules/World/Access/AccessModule.cs    | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/OpenSim/Region/CoreModules/World/Access/AccessModule.cs b/OpenSim/Region/CoreModules/World/Access/AccessModule.cs
index 1599f1537f..f567cab8bf 100644
--- a/OpenSim/Region/CoreModules/World/Access/AccessModule.cs
+++ b/OpenSim/Region/CoreModules/World/Access/AccessModule.cs
@@ -91,13 +91,17 @@ namespace OpenSim.Region.CoreModules.World
 
         public void AddRegion(Scene scene)
         {
-            if (!m_SceneList.Contains(scene))
-                m_SceneList.Add(scene);
+            lock (m_SceneList)
+            {
+                if (!m_SceneList.Contains(scene))
+                    m_SceneList.Add(scene);
+            }
         }
 
         public void RemoveRegion(Scene scene)
         {
-            m_SceneList.Remove(scene);
+            lock (m_SceneList)
+                m_SceneList.Remove(scene);
         }
 
         public void RegionLoaded(Scene scene)