Patch #9141 (Mantis #1655)

Untangles llDie handling in XEngine, which resulted in a thread being
aborted while executing inside of Scene.

OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs

@@ -637,7 +637,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         public void llDie()
         {
             m_host.AddScriptLPS(1);
-            World.DeleteSceneObject(m_host.ParentGroup);
+            throw new SelfDeleteException();
         }
 
         public double llGround(LSL_Types.Vector3 offset)

OpenSim/Region/ScriptEngine/Shared/Helpers.cs

@@ -52,6 +52,20 @@ namespace OpenSim.Region.ScriptEngine.Shared
         }
     }
 
+    [Serializable]
+    public class SelfDeleteException : Exception
+    {
+        public SelfDeleteException()
+        {
+        }
+
+        protected SelfDeleteException(
+                SerializationInfo info, 
+                StreamingContext context)
+        {
+        }
+    }
+
     public class DetectParams
     {
         public DetectParams()

OpenSim/Region/ScriptEngine/XEngine/XEngine.cs

@@ -874,6 +874,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         private string m_Assembly;
         private int m_StartParam = 0;
         private string m_CurrentEvent = String.Empty;
+        private bool m_InSelfDelete = false;
 
         private Dictionary<string,IScriptApi> m_Apis = new Dictionary<string,IScriptApi>();
 
@@ -1190,6 +1191,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             if (result == null)
                 return true;
 
+			if(!m_InSelfDelete)
 				result.Abort();
 
             lock (m_EventQueue)
@@ -1298,7 +1300,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                     m_InEvent = false;
                     m_CurrentEvent = String.Empty;
 
-                    if (!(e is TargetInvocationException) || !(e.InnerException is EventAbortException))
+                    if (!(e is TargetInvocationException) || (!(e.InnerException is EventAbortException) && (!(e.InnerException is SelfDeleteException))))
                     {
                         if (e is System.Threading.ThreadAbortException)
                         {
@@ -1340,6 +1342,12 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                                                e.ToString());
                         }
                     }
+                    else if((e is TargetInvocationException) && (e.InnerException is SelfDeleteException))
+                    {
+                        m_InSelfDelete = true;
+                        if(part != null && part.ParentGroup != null)
+                            m_Engine.World.DeleteSceneObject(part.ParentGroup);
+                    }
                 }
             }