From 3d118fb580ea0a5e9d9b23f5f876fca80cd17d0e Mon Sep 17 00:00:00 2001
From: Justin Clark-Casey (justincc)
Date: Fri, 12 Jul 2013 18:53:27 +0100
Subject: In co-op termination, extend EventWaitHandle to give this an
 indefinite lifetime in order to avoid a later RemotingException if scripts
 are being loaded into their own domains.

This is necessary because XEngineScriptBase now retains a reference to an EventWaitHandle when co-op termination is active.
Aims to address http://opensimulator.org/mantis/view.php?id=6634
---
 .../ScriptEngine/Shared/Instance/ScriptInstance.cs | 23 ++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs b/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
index 887a317..229180f 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
@@ -241,7 +241,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             if (Engine.Config.GetString("ScriptStopStrategy", "abort") == "co-op")
             {
                 m_coopTermination = true;
-                m_coopSleepHandle = new AutoResetEvent(false);
+                m_coopSleepHandle = new XEngineEventWaitHandle(false, EventResetMode.AutoReset);
             }
         }
 
@@ -1201,4 +1201,23 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             Suspended = false;
         }
     }
-}
+
+    /// <summary>
+    /// Xengine event wait handle.
+    /// </summary>
+    /// <remarks>
+    /// This class exists becase XEngineScriptBase gets a reference to this wait handle.  We need to make sure that
+    /// when scripts are running in different AppDomains the lease does not expire.
+    /// FIXME: Like LSL_Api, etc., this effectively leaks memory since the GC will never collect it.  To avoid this,
+    /// proper remoting sponsorship needs to be implemented across the board.
+    /// </remarks>
+    public class XEngineEventWaitHandle : EventWaitHandle
+    {
+        public XEngineEventWaitHandle(bool initialState, EventResetMode mode) : base(initialState, mode) {}
+
+        public override Object InitializeLifetimeService()
+        {
+            return null;
+        }
+    }
+}
\ No newline at end of file
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