Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/diagnostics/PerfCounterSection.cs

@@ -0,0 +1,35 @@
+//------------------------------------------------------------------------------
+// <copyright file="PerfCounterSection.cs" company="Microsoft Corporation">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+#if CONFIGURATION_DEP
+using System.Configuration;
+
+namespace System.Diagnostics {
+    internal class PerfCounterSection : ConfigurationElement {
+        private static readonly ConfigurationPropertyCollection _properties;
+        private static readonly ConfigurationProperty _propFileMappingSize = new ConfigurationProperty("filemappingsize", typeof(int), 524288, ConfigurationPropertyOptions.None);
+
+        static PerfCounterSection(){
+            _properties = new ConfigurationPropertyCollection();
+            _properties.Add(_propFileMappingSize);
+        }
+
+        [ConfigurationProperty("filemappingsize", DefaultValue = 524288)]
+        public int FileMappingSize {
+            get { 
+                return (int) this[_propFileMappingSize]; 
+            }
+        }
+
+        protected override ConfigurationPropertyCollection Properties {
+            get {
+                return _properties;
+            }
+        }
+    }
+}
+
+#endif