1 files changed, 31 insertions, 20 deletions

diff --git a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
index 7b19ce3..57042e9 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
@@ -73,9 +73,11 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         private bool m_InitialStartup = true;
         private int m_ScriptFailCount; // Number of script fails since compile queue was last empty
         private string m_ScriptErrorMessage;
+        private Dictionary<string, string> m_uniqueScripts = new Dictionary<string, string>();
+        private bool m_AppDomainLoading;
 
-// disable warning: need to keep a reference to XEngine.EventManager
-// alive to avoid it being garbage collected
+        // disable warning: need to keep a reference to XEngine.EventManager
+        // alive to avoid it being garbage collected
 #pragma warning disable 414
         private EventManager m_EventManager;
 #pragma warning restore 414
@@ -201,6 +203,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             m_MaxScriptQueue = m_ScriptConfig.GetInt("MaxScriptEventQueue",300);
             m_StackSize = m_ScriptConfig.GetInt("ThreadStackSize", 262144);
             m_SleepTime = m_ScriptConfig.GetInt("MaintenanceInterval", 10) * 1000;
+            m_AppDomainLoading = m_ScriptConfig.GetBoolean("AppDomainLoading", true);
 
             m_EventLimit = m_ScriptConfig.GetInt("EventLimit", 30);
             m_KillTimedOutScripts = m_ScriptConfig.GetBoolean("KillTimedOutScripts", false);
@@ -470,6 +473,12 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             if (engine != ScriptEngineName)
                 return;
 
+            // If we've seen this exact script text before, use that reference instead
+            if (m_uniqueScripts.ContainsKey(script))
+                script = m_uniqueScripts[script];
+            else
+                m_uniqueScripts[script] = script;
+
             Object[] parms = new Object[]{localID, itemID, script, startParam, postOnRez, (StateSource)stateSource};
 
             if (stateSource == (int)StateSource.ScriptedRez)
@@ -590,14 +599,12 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             {
                 lock (m_AddingAssemblies) 
                 {
-                    assembly = (string)m_Compiler.PerformScriptCompile(script,
-                            assetID.ToString(), item.OwnerID);
+                    m_Compiler.PerformScriptCompile(script, assetID.ToString(), item.OwnerID, out assembly, out linemap);
                     if (!m_AddingAssemblies.ContainsKey(assembly)) {
                         m_AddingAssemblies[assembly] = 1;
                     } else {
                         m_AddingAssemblies[assembly]++;
                     }
-                    linemap = m_Compiler.LineMap();
                 }
 
                 string[] warnings = m_Compiler.GetWarnings();
@@ -696,19 +703,22 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                             Evidence baseEvidence = AppDomain.CurrentDomain.Evidence;
                             Evidence evidence = new Evidence(baseEvidence);
 
-                            AppDomain sandbox =
-                                AppDomain.CreateDomain(
-                                    m_Scene.RegionInfo.RegionID.ToString(),
-                                    evidence, appSetup);
-/*
-                            PolicyLevel sandboxPolicy = PolicyLevel.CreateAppDomainLevel();
-                            AllMembershipCondition sandboxMembershipCondition = new AllMembershipCondition();
-                            PermissionSet sandboxPermissionSet = sandboxPolicy.GetNamedPermissionSet("Internet");
-                            PolicyStatement sandboxPolicyStatement = new PolicyStatement(sandboxPermissionSet);
-                            CodeGroup sandboxCodeGroup = new UnionCodeGroup(sandboxMembershipCondition, sandboxPolicyStatement);
-                            sandboxPolicy.RootCodeGroup = sandboxCodeGroup;
-                            sandbox.SetAppDomainPolicy(sandboxPolicy);
-*/
+                            AppDomain sandbox;
+                            if (m_AppDomainLoading)
+                                sandbox = AppDomain.CreateDomain(
+                                                m_Scene.RegionInfo.RegionID.ToString(),
+                                                evidence, appSetup);
+                            else
+                                sandbox = AppDomain.CurrentDomain;
+                            /*
+                                                        PolicyLevel sandboxPolicy = PolicyLevel.CreateAppDomainLevel();
+                                                        AllMembershipCondition sandboxMembershipCondition = new AllMembershipCondition();
+                                                        PermissionSet sandboxPermissionSet = sandboxPolicy.GetNamedPermissionSet("Internet");
+                                                        PolicyStatement sandboxPolicyStatement = new PolicyStatement(sandboxPermissionSet);
+                                                        CodeGroup sandboxCodeGroup = new UnionCodeGroup(sandboxMembershipCondition, sandboxPolicyStatement);
+                                                        sandboxPolicy.RootCodeGroup = sandboxCodeGroup;
+                                                        sandbox.SetAppDomainPolicy(sandboxPolicy);
+                            */
                             m_AppDomains[appDomain] = sandbox;
 
                             m_AppDomains[appDomain].AssemblyResolve +=
@@ -905,9 +915,10 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                 AppDomain domain = m_AppDomains[id];
                 m_AppDomains.Remove(id);
 
-                AppDomain.Unload(domain);
+                if (domain != AppDomain.CurrentDomain)
+                    AppDomain.Unload(domain);
                 domain = null;
-//                m_log.DebugFormat("[XEngine] Unloaded app domain {0}", id.ToString());
+                // m_log.DebugFormat("[XEngine] Unloaded app domain {0}", id.ToString());
             }
         }