Spring.Aop/Aop/Framework/ProxyConfig instantiation optimization

src/Spring/Spring.Aop/Aop/Framework/ProxyConfig.cs

@@ -21,10 +21,12 @@
 #region Imports
 
 using System;
-using System.Text;
+using System.Text;
+using System.Reflection;
 using Spring.Aop.Framework.DynamicProxy;
 using Spring.Core.TypeResolution;
-using Spring.Util;
+using Spring.Util;
+using Spring.Reflection.Dynamic;
 
 #endregion
 
@@ -50,16 +52,22 @@ namespace Spring.Aop.Framework
 	[Serializable]
     public class ProxyConfig
     {
-        #region Fields
+        #region Fields
+
+        private static readonly ConstructorInfo cachedAopProxyFactoryCtorInfo =
+            typeof(ProxyConfig).Assembly.GetType("Spring.Aop.Framework.DynamicProxy.CachedAopProxyFactory", false, false).GetConstructor(Type.EmptyTypes);
+
         private bool proxyTargetType;
 	    private bool proxyTargetAttributes = true;
 		private bool optimize;
-		private bool frozen;
+		private bool frozen;
+
+        private IAopProxyFactory aopProxyFactory =
+            DynamicConstructor.Create(cachedAopProxyFactoryCtorInfo).Invoke(ObjectUtils.EmptyObjects) as IAopProxyFactory;
 
-	    private IAopProxyFactory aopProxyFactory =
-	        ObjectUtils.InstantiateType( typeof(ProxyConfig).Assembly, "Spring.Aop.Framework.DynamicProxy.CachedAopProxyFactory") as IAopProxyFactory;
 		private bool exposeProxy;
         private readonly object syncRoot = new object();
+
         #endregion
 
         #region Properites

test/Spring/Spring.Aop.Tests/Aop/Framework/ProxyConfigTests.cs

@@ -21,6 +21,7 @@
 #region Imports
 
 using System;
+using System.Diagnostics;
 using NUnit.Framework;
 
 #endregion
@@ -39,5 +40,22 @@ namespace Spring.Aop.Framework
 		{
 
 		}
+
+#if NET_2_0
+        [Category("Performance")]
+        [Test, Explicit]
+        public void InstantiationPerformance()
+        {
+            int iterations = 10000;
+
+            Stopwatch watch = Stopwatch.StartNew();
+            for (int i = 0; i < iterations; i++)
+            {
+                new ProxyConfig();
+            }
+            watch.Stop();
+            Console.WriteLine("Instantiation time: {0}ms", watch.ElapsedMilliseconds);
+        }
+#endif
 	}
 }