-Array pool perf test

Src/Newtonsoft.Json.TestConsole/Program.cs

@@ -51,8 +51,17 @@ namespace Newtonsoft.Json.TestConsole
             //PerformanceTests t = new PerformanceTests();
             //t.DeserializeLargeJson();
 
-            //DeserializeLargeJson();
-            WriteLargeJson();
+            PerformanceTests t = new PerformanceTests();
+            t.Iterations = 10000;
+            t.BenchmarkDeserializeMethod<TestClass>(PerformanceTests.SerializeMethod.JsonNet, PerformanceTests.JsonText);
+
+            Console.WriteLine("Wait to do stuff again");
+            Console.ReadKey();
+
+            t.BenchmarkDeserializeMethod<TestClass>(PerformanceTests.SerializeMethod.JsonNet, PerformanceTests.JsonText);
+
+            //ReadLargeJson();
+            //WriteLargeJson();
             //DeserializeJson();
             //ReadLargeJson();
             //ReadLargeJsonJavaScriptSerializer();

Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.Portable.project.json

@@ -2,7 +2,7 @@
   "dependencies": {
     "FSharp.Core": "4.0.0.1",
     "NUnit": "2.6.2",
-    "System.Collections.Immutable": "1.1.36"
+    "System.Collections.Immutable": "1.1.37"
   },
   "frameworks": {
     "net45": {}

Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.project.json

@@ -3,7 +3,8 @@
     "Autofac": "4.0.0-beta7-130",
     "FSharp.Core": "4.0.0.1",
     "NUnit": "2.6.2",
-    "System.Collections.Immutable": "1.1.36"
+    "System.Buffers": "4.0.0-rc2-23623",
+    "System.Collections.Immutable": "1.1.37"
   },
   "frameworks": {
     "net45": {}

Src/Newtonsoft.Json.Tests/PerformanceTests.cs

@@ -23,9 +23,10 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 #endregion
 
-#if !(NET20 || NET35 || NETFX_CORE || PORTABLE || DNXCORE50)
+#if !(NET20 || NET35 || NET40 || NETFX_CORE || PORTABLE || PORTABLE40 || DNXCORE50)
 using System.Xml;
 using System;
+using System.Buffers;
 using System.Collections;
 using System.Collections.Generic;
 using System.Globalization;
@@ -67,7 +68,7 @@ namespace Newtonsoft.Json.Tests
     public class PerformanceTests : TestFixtureBase
     {
         public int Iterations = 100;
-        //private const int Iterations = 5000;
+        //public int Iterations = 10000;
 
         #region Data
         private const string BsonHex =
@@ -79,7 +80,7 @@ namespace Newtonsoft.Json.Tests
         private const string XmlText =
             @"<TestClass xmlns=""http://schemas.datacontract.org/2004/07/Newtonsoft.Json.Tests"" xmlns:i=""http://www.w3.org/2001/XMLSchema-instance""><Address1><Entered>2010-01-21T11:12:16.0809174+13:00</Entered><Phone>(503) 814-6335</Phone><Street>fff Street</Street></Address1><Addresses><Address><Entered>2009-12-31T11:12:16.0809174+13:00</Entered><Phone>(503) 814-6335</Phone><Street>&#x1F;array&lt;address</Street></Address><Address><Entered>2009-12-30T11:12:16.0809174+13:00</Entered><Phone>(503) 814-6335</Phone><Street>array 2 address</Street></Address></Addresses><BigNumber>34123123123.121</BigNumber><Name>Rick</Name><Now>2010-01-01T12:12:16.0809174+13:00</Now><dictionary xmlns:a=""http://schemas.microsoft.com/2003/10/Serialization/Arrays""><a:KeyValueOfstringint><a:Key>Val &amp; asd1</a:Key><a:Value>1</a:Value></a:KeyValueOfstringint><a:KeyValueOfstringint><a:Key>Val2 &amp; asd1</a:Key><a:Value>3</a:Value></a:KeyValueOfstringint><a:KeyValueOfstringint><a:Key>Val3 &amp; asd1</a:Key><a:Value>4</a:Value></a:KeyValueOfstringint></dictionary><strings xmlns:a=""http://schemas.microsoft.com/2003/10/Serialization/Arrays""><a:string i:nil=""true""/><a:string>Markus egger ]&gt;&lt;[, (2nd)</a:string><a:string i:nil=""true""/></strings></TestClass>";
 
-        private const string JsonText =
+        public const string JsonText =
             @"{""strings"":[null,""Markus egger ]><[, (2nd)"",null],""dictionary"":{""Val & asd1"":1,""Val2 & asd1"":3,""Val3 & asd1"":4},""Name"":""Rick"",""Now"":""\/Date(1262301136080+1300)\/"",""BigNumber"":34123123123.121,""Address1"":{""Street"":""fff Street"",""Phone"":""(503) 814-6335"",""Entered"":""\/Date(1264025536080+1300)\/""},""Addresses"":[{""Street"":""\u001farray<address"",""Phone"":""(503) 814-6335"",""Entered"":""\/Date(1262211136080+1300)\/""},{""Street"":""array 2 address"",""Phone"":""(503) 814-6335"",""Entered"":""\/Date(1262124736080+1300)\/""}]}";
 
         private const string JsonIsoText =
@@ -807,6 +808,7 @@ If attributes are not mentioned, default values are used in each case.
         public void BenchmarkDeserializeMethod<T>(SerializeMethod method, object json, int? iterations = null, bool warmUp = true)
         {
             GC.Collect();
+            GC.WaitForPendingFinalizers();
 
             if (warmUp)
             {
@@ -845,8 +847,28 @@ If attributes are not mentioned, default values are used in each case.
                 serializer.Converters.Add(new IsoDateTimeConverter());
             }
 
-            var value = (T)serializer.Deserialize(new StringReader(json), type);
-            return value;
+            using (JsonTextReader reader = new JsonTextReader(new StringReader(json)))
+            {
+                reader.ArrayPool = JsonArrayPool.Instance;
+
+                var value = (T)serializer.Deserialize(reader, type);
+                return value;
+            }
+        }
+
+        public class JsonArrayPool : IArrayPool<char>
+        {
+            public static readonly JsonArrayPool Instance = new JsonArrayPool();
+
+            public char[] Rent(int minimumLength)
+            {
+                return ArrayPool<char>.Shared.Rent(minimumLength);
+            }
+
+            public void Return(char[] array)
+            {
+                ArrayPool<char>.Shared.Return(array);
+            }
         }
 
         public TestClass DeserializeJsonNetManual(string json)

Src/Newtonsoft.Json.Tests/project.json

@@ -32,7 +32,8 @@
         "Autofac": "4.0.0-beta7-130",
         "FSharp.Core": "4.0.0.1",
         "NUnit": "2.6.4",
-        "System.Collections.Immutable": "1.1.37"
+        "System.Collections.Immutable": "1.1.37",
+        "System.Buffers": "4.0.0-rc2-23623"
       }
     },
     "net40": {