Added ReadOnlySpan

CHANGELOG.md

@@ -0,0 +1,3 @@
+# 2018-03-11
+- Added API for ReadOnlySpan
+- Added support for the async calls with cancelation tokens

README.md

@@ -15,7 +15,7 @@
     <img src="https://codecov.io/gh/uranium62/xxHash/branch/master/graph/badge.svg" alt="coverage"/>
   </a>
   <a href="https://www.nuget.org/packages/Standart.Hash.xxHash">
-    <img src="https://img.shields.io/badge/nuget-1.0.5-green.svg?style=flat-square" alt="nuget"/>
+    <img src="https://img.shields.io/badge/nuget-1.0.6-green.svg?style=flat-square" alt="nuget"/>
   </a>
   <a href="https://www.nuget.org/packages/Standart.Hash.xxHash">
     <img src="https://img.shields.io/badge/platform-x64-blue.svg?longCache=true" alt="platform"/>
@@ -74,13 +74,15 @@ byte[] data = Encoding.UTF8.GetBytes("veni vidi vici");
 
 ulong h64_1 = xxHash64.ComputeHash(data, data.Length);
 ulong h64_2 = xxHash64.ComputeHash(new Span<byte>(data), data.Length);
-ulong h64_3 = xxHash64.ComputeHash(new MemoryStream(data));
+ulong h64_3 = xxHash64.ComputeHash(new ReadOnlySpan<byte>(data), data.Length);
-ulong h64_4 = await xxHash64.ComputeHashAsync(new MemoryStream(data));
+ulong h64_4 = xxHash64.ComputeHash(new MemoryStream(data));
+ulong h64_5 = await xxHash64.ComputeHashAsync(new MemoryStream(data));
 
 uint h32_1 = xxHash32.ComputeHash(data, data.Length);
 uint h32_2 = xxHash32.ComputeHash(new Span<byte>(data), data.Length);
-uint h32_3 = xxHash32.ComputeHash(new MemoryStream(data));
+uint h32_3 = xxHash32.ComputeHash(new ReadOnlySpan<byte>(data), data.Length);
-uint h32_4 = await xxHash32.ComputeHashAsync(new MemoryStream(data));
+uint h32_4 = xxHash32.ComputeHash(new MemoryStream(data));
+uint h32_5 = await xxHash32.ComputeHashAsync(new MemoryStream(data));
 ```
 ---
 <p align="center">

nuget.props

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <PackageId>Standart.Hash.xxHash</PackageId>
-    <VersionPrefix>1.0.5</VersionPrefix>
+    <VersionPrefix>1.0.6</VersionPrefix>
     <AssemblyName>Standart.Hash.xxHash</AssemblyName>
     <AssemblyTitle>Standart.Hash.xxHash</AssemblyTitle>
     <Authors>Alexander Melnik</Authors>

src/Standart.Hash.xxHash.Perf/xxHashBenchmark.cs

@@ -8,7 +8,7 @@
     [RPlotExporter, RankColumn]
     [MinColumn, MaxColumn]
     [MemoryDiagnoser]
-    //[DisassemblyDiagnoser(printAsm: true, printSource: true)]
+    // [DisassemblyDiagnoser(printAsm: true, printSource: true)]
     public class xxHashBenchmark
     {
         const int KB = 1024;
@@ -44,6 +44,13 @@
             return xxHash32.ComputeHash(span, span.Length);
         }
         
+        [Benchmark]
+        public uint Hash32_ReadOnlySpan()
+        {
+            ReadOnlySpan<byte> span = new ReadOnlySpan<byte>(data);
+            return xxHash32.ComputeHash(span, span.Length);
+        }
+
         [Benchmark]
         public uint Hash32_Stream()
         {
@@ -71,6 +78,13 @@
             return xxHash64.ComputeHash(span, span.Length);
         }
         
+        [Benchmark]
+        public ulong Hash64_ReadOnlySpan()
+        {
+            ReadOnlySpan<byte> span = new ReadOnlySpan<byte>(data);
+            return xxHash64.ComputeHash(span, span.Length);
+        }
+        
         [Benchmark]
         public ulong Hash64_Stream()
         {

src/Standart.Hash.xxHash.Test/xxHash32Test.cs

@@ -2,6 +2,7 @@
 {
     using System;
     using System.IO;
+    using System.Threading;
     using System.Threading.Tasks;
     using Xunit;
 
@@ -13,14 +14,17 @@
             // Arrange
             byte[] data = {0xde};
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
 
             // Act
             uint hash1 = xxHash32.ComputeHash(data, data.Length);
             uint hash2 = xxHash32.ComputeHash(span, span.Length);
+            uint hash3 = xxHash32.ComputeHash(rspan, rspan.Length);
 
             // Assert
             Assert.Equal(hash1, (uint) 0x2330eac0);
             Assert.Equal(hash2, (uint) 0x2330eac0);
+            Assert.Equal(hash3, (uint) 0x2330eac0);
         }
 
         [Fact]
@@ -29,14 +33,17 @@
             // Arrange
             byte[] data = {0xde, 0x55, 0x47, 0x7f, 0x14};
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
 
             // Act
             uint hash1 = xxHash32.ComputeHash(data, data.Length);
             uint hash2 = xxHash32.ComputeHash(span, span.Length);
+            uint hash3 = xxHash32.ComputeHash(rspan, rspan.Length);
 
             // Assert
             Assert.Equal(hash1, (uint) 0x112348ba);
             Assert.Equal(hash2, (uint) 0x112348ba);
+            Assert.Equal(hash3, (uint) 0x112348ba);
         }
 
         [Fact]
@@ -49,14 +56,17 @@
                 0x22, 0x3a, 0x40, 0x96, 0x56, 0xc5, 0xdc, 0xbb
             };
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
 
             // Act
             uint hash1 = xxHash32.ComputeHash(data, data.Length);
             uint hash2 = xxHash32.ComputeHash(span, span.Length);
+            uint hash3 = xxHash32.ComputeHash(rspan, rspan.Length);
 
             // Assert
             Assert.Equal(hash1, (uint) 0xcdf89609);
             Assert.Equal(hash2, (uint) 0xcdf89609);
+            Assert.Equal(hash3, (uint) 0xcdf89609);
         }
 
         [Fact]
@@ -70,14 +80,17 @@
                 0x0e
             };
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
 
             // Act
             uint hash1 = xxHash32.ComputeHash(data, data.Length);
             uint hash2 = xxHash32.ComputeHash(span, span.Length);
+            uint hash3 = xxHash32.ComputeHash(rspan, rspan.Length);
 
             // Assert
             Assert.Equal(hash1, (uint) 0xbca8f924);
             Assert.Equal(hash2, (uint) 0xbca8f924);
+            Assert.Equal(hash3, (uint) 0xbca8f924);
         }
 
         [Fact]
@@ -91,14 +104,17 @@
                 0x0e, 0x59, 0x4d, 0x42, 0xc5
             };
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
 
             // Act
             uint hash1 = xxHash32.ComputeHash(data, data.Length);
             uint hash2 = xxHash32.ComputeHash(span, span.Length);
+            uint hash3 = xxHash32.ComputeHash(rspan, rspan.Length);
 
             // Assert
             Assert.Equal(hash1, (uint) 0xf4518e14);
             Assert.Equal(hash2, (uint) 0xf4518e14);
+            Assert.Equal(hash3, (uint) 0xf4518e14);
         }
         
         [Fact]
@@ -113,14 +129,17 @@
                 0x1c, 0x2c, 0xc9, 0x38, 0x7d, 0x43, 0x83, 0x11,
             };
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
 
             // Act
             uint hash1 = xxHash32.ComputeHash(data, data.Length);
             uint hash2 = xxHash32.ComputeHash(span, span.Length);
+            uint hash3 = xxHash32.ComputeHash(rspan, rspan.Length);
 
             // Assert
             Assert.Equal(hash1, (uint) 0xf8497daa);
             Assert.Equal(hash2, (uint) 0xf8497daa);
+            Assert.Equal(hash3, (uint) 0xf8497daa);
         }
 
         [Fact]
@@ -349,6 +368,29 @@
             Assert.Equal(hash, (uint) 0xf8497daa);
         }
         
+        [Fact]
+        public async Task Compute_hash32_for_the_async_stream_32_with_cancelation_token()
+        {
+            // Arrange
+            byte[] data = new byte[]
+            {
+                0xde, 0x55, 0x47, 0x7f, 0x14, 0x8f, 0xf1, 0x48,
+                0x22, 0x3a, 0x40, 0x96, 0x56, 0xc5, 0xdc, 0xbb,
+                0x0e, 0x59, 0x4d, 0x42, 0xc5, 0x07, 0x21, 0x08,
+                0x1c, 0x2c, 0xc9, 0x38, 0x7d, 0x43, 0x83, 0x11,
+            };
+            CancellationTokenSource tokenSource = new CancellationTokenSource();
+            
+            // Act
+            tokenSource.Cancel();
+            
+            // Assert
+            await Assert.ThrowsAsync<TaskCanceledException>(async () =>
+            {
+                await xxHash32.ComputeHashAsync(new MemoryStream(data), 4096, 0, tokenSource.Token);
+            });
+        }
+
         [Fact]
         public async Task Compute_hash32_for_the_async_random_stream()
         {

src/Standart.Hash.xxHash.Test/xxHash64Test.cs

@@ -2,6 +2,7 @@
 {
     using System;
     using System.IO;
+    using System.Threading;
     using System.Threading.Tasks;
     using Xunit;
 
@@ -13,14 +14,17 @@
             // Arrange
             byte[] data = {0x60};
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
             
             // Act
             ulong hash1 = xxHash64.ComputeHash(data, data.Length);
-            ulong hash2 = xxHash64.ComputeHash(span, data.Length);
+            ulong hash2 = xxHash64.ComputeHash(span, span.Length);
+            ulong hash3 = xxHash64.ComputeHash(rspan, rspan.Length);
             
             // Assert
             Assert.Equal(hash1, (ulong) 0xb3e7ca6ca5ba3445);
             Assert.Equal(hash2, (ulong) 0xb3e7ca6ca5ba3445);
+            Assert.Equal(hash3, (ulong) 0xb3e7ca6ca5ba3445);
         }
         
         [Fact]
@@ -29,14 +33,17 @@
             // Arrange
             byte[] data = {0x60, 0x82, 0x40, 0x77, 0x8a};
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
             
             // Act
             ulong hash1 = xxHash64.ComputeHash(data, data.Length);
-            ulong hash2 = xxHash64.ComputeHash(span, data.Length);
+            ulong hash2 = xxHash64.ComputeHash(span, span.Length);
+            ulong hash3 = xxHash64.ComputeHash(rspan, rspan.Length);
             
             // Assert
             Assert.Equal(hash1, (ulong) 0x917b11ed024938fc);
             Assert.Equal(hash2, (ulong) 0x917b11ed024938fc);
+            Assert.Equal(hash3, (ulong) 0x917b11ed024938fc);
         }
         
         [Fact]
@@ -49,14 +56,17 @@
                 0x85, 0x1f, 0xa6, 0x86, 0x34,
             };
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
             
             // Act
             ulong hash1 = xxHash64.ComputeHash(data, data.Length);
-            ulong hash2 = xxHash64.ComputeHash(span, data.Length);
+            ulong hash2 = xxHash64.ComputeHash(span, span.Length);
+            ulong hash3 = xxHash64.ComputeHash(rspan, rspan.Length);
             
             // Assert
             Assert.Equal(hash1, (ulong) 0x9d1cb0d181d58bee);
             Assert.Equal(hash2, (ulong) 0x9d1cb0d181d58bee);
+            Assert.Equal(hash3, (ulong) 0x9d1cb0d181d58bee);
         }
         
         [Fact]
@@ -71,14 +81,17 @@
                 0x4b, 0x0f, 0x90, 0x4e, 0xf5, 0x57, 0x21, 0x21,
             };
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
             
             // Act
             ulong hash1 = xxHash64.ComputeHash(data, data.Length);
-            ulong hash2 = xxHash64.ComputeHash(span, data.Length);
+            ulong hash2 = xxHash64.ComputeHash(span, span.Length);
+            ulong hash3 = xxHash64.ComputeHash(rspan, rspan.Length);
             
             // Assert
             Assert.Equal(hash1, (ulong) 0x9233096b7804e12c);
             Assert.Equal(hash2, (ulong) 0x9233096b7804e12c);
+            Assert.Equal(hash3, (ulong) 0x9233096b7804e12c);
         }
         
         [Fact]
@@ -97,14 +110,17 @@
                 0x7e, 0x28, 0xce, 0x46, 0x85, 0xb7, 0x2b, 0x16,
             };
             Span<byte> span = new Span<byte>(data);
+            ReadOnlySpan<byte> rspan = new ReadOnlySpan<byte>(data);
             
             // Act
             ulong hash1 = xxHash64.ComputeHash(data, data.Length);
-            ulong hash2 = xxHash64.ComputeHash(span, data.Length);
+            ulong hash2 = xxHash64.ComputeHash(span, span.Length);
+            ulong hash3 = xxHash64.ComputeHash(rspan, rspan.Length);
             
             // Assert
             Assert.Equal(hash1, (ulong) 0x4c0a65b1ef9ea060);
             Assert.Equal(hash2, (ulong) 0x4c0a65b1ef9ea060);
+            Assert.Equal(hash3, (ulong) 0x4c0a65b1ef9ea060);
         }
         
         [Fact]
@@ -192,6 +208,7 @@
             Assert.Equal(hash, (ulong) 0x4c0a65b1ef9ea060);
         }
         
+        
         [Fact]
         public void Compute_hash64_for_the_random_stream()
         {
@@ -308,6 +325,33 @@
             Assert.Equal(hash, (ulong) 0x4c0a65b1ef9ea060);
         }
         
+        [Fact]
+        public async Task Compute_hash64_for_the_async_stream_64_with_cancelation_token()
+        {
+            // Arrange
+            byte[] data = 
+            {
+                0x60, 0x82, 0x40, 0x77, 0x8a, 0x0e, 0xe4, 0xd5,
+                0x85, 0x1f, 0xa6, 0x86, 0x34, 0x01, 0xd7, 0xf2,
+                0x30, 0x5d, 0x84, 0x54, 0x15, 0xf9, 0xbd, 0x03,
+                0x4b, 0x0f, 0x90, 0x4e, 0xf5, 0x57, 0x21, 0x21,
+                0xed, 0x8c, 0x19, 0x93, 0xbd, 0x01, 0x12, 0x0c,
+                0x20, 0xb0, 0x33, 0x98, 0x4b, 0xe7, 0xc1, 0x0a,
+                0x27, 0x6d, 0xb3, 0x5c, 0xc7, 0xc0, 0xd0, 0xa0,
+                0x7e, 0x28, 0xce, 0x46, 0x85, 0xb7, 0x2b, 0x16,
+            };
+            CancellationTokenSource tokenSource = new CancellationTokenSource();
+            
+            // Act
+            tokenSource.Cancel();
+            
+            // Assert
+            await Assert.ThrowsAsync<TaskCanceledException>(async() =>
+            {
+                await xxHash64.ComputeHashAsync(new MemoryStream(data), 8192, 0, tokenSource.Token);
+            });
+        }
+        
         [Fact]
         public async Task Compute_hash64_for_the_async_random_stream()
         {

src/Standart.Hash.xxHash/xxHash32.Async.cs

@@ -3,6 +3,7 @@
     using System.Buffers;
     using System.Diagnostics;
     using System.IO;
+    using System.Threading;
     using System.Threading.Tasks;
 
     public static partial class xxHash32
@@ -15,6 +16,20 @@
         /// <param name="seed">The seed number</param>
         /// <returns>The hash</returns>
         public static async ValueTask<uint> ComputeHashAsync(Stream stream, int bufferSize = 4096, uint seed = 0)
+        {
+            return await ComputeHashAsync(stream, bufferSize, seed, CancellationToken.None);
+        }
+        
+        
+        /// <summary>
+        /// Compute xxHash for the async stream
+        /// </summary>
+        /// <param name="stream">The stream of data</param>
+        /// <param name="bufferSize">The buffer size</param>
+        /// <param name="seed">The seed number</param>
+        /// <param name="cancellationToken">The cancellation token</param>
+        /// <returns>The hash</returns>
+        public static async ValueTask<uint> ComputeHashAsync(Stream stream, int bufferSize, uint seed, CancellationToken cancellationToken)
         {
             Debug.Assert(stream != null);
             Debug.Assert(bufferSize > 16);
@@ -35,8 +50,14 @@
             try
             {
                 // Read flow of bytes
-                while ((readBytes = await stream.ReadAsync(buffer, offset, bufferSize).ConfigureAwait(false)) > 0)
+                while ((readBytes = await stream.ReadAsync(buffer, offset, bufferSize, cancellationToken).ConfigureAwait(false)) > 0)
                 {
+                    // Exit if the operation is canceled
+                    if (cancellationToken.IsCancellationRequested)
+                    {
+                        return await Task.FromCanceled<uint>(cancellationToken);
+                    }
+                    
                     length = length + readBytes;
                     offset = offset + readBytes;
 

src/Standart.Hash.xxHash/xxHash32.Span.cs

@@ -3,6 +3,8 @@ using System.Diagnostics;
 
 namespace Standart.Hash.xxHash
 {
+    using System.Runtime.InteropServices;
+
     public static partial class xxHash32
     {
         /// <summary>
@@ -18,7 +20,26 @@ namespace Standart.Hash.xxHash
             Debug.Assert(length >= 0);
             Debug.Assert(length <= data.Length);
 
-            fixed (byte* pData = &data[0])
+            fixed (byte* pData = &MemoryMarshal.GetReference(data))
+            {
+                return UnsafeComputeHash(pData, length, seed);
+            }
+        }
+        
+        /// <summary>
+        /// Compute xxHash for the data byte span 
+        /// </summary>
+        /// <param name="data">The source of data</param>
+        /// <param name="length">The length of the data for hashing</param>
+        /// <param name="seed">The seed number</param>
+        /// <returns>hash</returns>
+        public static unsafe uint ComputeHash(ReadOnlySpan<byte> data, int length, uint seed = 0)
+        {
+            Debug.Assert(data != null);
+            Debug.Assert(length >= 0);
+            Debug.Assert(length <= data.Length);
+
+            fixed (byte* pData = &MemoryMarshal.GetReference(data))
             {
                 return UnsafeComputeHash(pData, length, seed);
             }

src/Standart.Hash.xxHash/xxHash64.Async.cs

@@ -3,6 +3,7 @@
     using System.Buffers;
     using System.Diagnostics;
     using System.IO;
+    using System.Threading;
     using System.Threading.Tasks;
 
     public static partial class xxHash64
@@ -15,6 +16,19 @@
         /// <param name="seed">The seed number</param>
         /// <returns>The hash</returns>
         public static async ValueTask<ulong> ComputeHashAsync(Stream stream, int bufferSize = 8192, ulong seed = 0)
+        {
+            return await ComputeHashAsync(stream, bufferSize, seed, CancellationToken.None);
+        }
+        
+        /// <summary>
+        /// Compute xxHash for the async stream
+        /// </summary>
+        /// <param name="stream">The stream of data</param>
+        /// <param name="bufferSize">The buffer size</param>
+        /// <param name="seed">The seed number</param>
+        /// <param name="cancellationToken">The cancelation token</param>
+        /// <returns>The hash</returns>
+        public static async ValueTask<ulong> ComputeHashAsync(Stream stream, int bufferSize, ulong seed, CancellationToken cancellationToken)
         {
             Debug.Assert(stream != null);
             Debug.Assert(bufferSize > 32);
@@ -35,8 +49,14 @@
             try
             {
                 // Read flow of bytes
-                while ((readBytes = await stream.ReadAsync(buffer, offset, bufferSize).ConfigureAwait(false)) > 0)
+                while ((readBytes = await stream.ReadAsync(buffer, offset, bufferSize, cancellationToken).ConfigureAwait(false)) > 0)
                 {   
+                    // Exit if the operation is canceled
+                    if (cancellationToken.IsCancellationRequested)
+                    {
+                        return await Task.FromCanceled<ulong>(cancellationToken);
+                    }
+                    
                     length = length + readBytes;
                     offset = offset + readBytes;
 

src/Standart.Hash.xxHash/xxHash64.Span.cs

@@ -2,6 +2,7 @@
 {
     using System;
     using System.Diagnostics;
+    using System.Runtime.InteropServices;
 
     public static partial class xxHash64
     {
@@ -18,7 +19,26 @@
             Debug.Assert(length >= 0);
             Debug.Assert(length <= data.Length);
 
-            fixed (byte* pData = &data[0])
+            fixed (byte* pData = &MemoryMarshal.GetReference(data))
+            {
+                return UnsafeComputeHash(pData, length, seed);
+            }
+        }
+        
+        /// <summary>
+        /// Compute xxHash for the data byte span
+        /// </summary>
+        /// <param name="data">The source of data</param>
+        /// <param name="length">The length of the data for hashing</param>
+        /// <param name="seed">The seed number</param>
+        /// <returns>hash</returns>
+        public static unsafe ulong ComputeHash(ReadOnlySpan<byte> data, int length, ulong seed = 0)
+        {
+            Debug.Assert(data != null);
+            Debug.Assert(length >= 0);
+            Debug.Assert(length <= data.Length);
+
+            fixed (byte* pData = &MemoryMarshal.GetReference(data))
             {
                 return UnsafeComputeHash(pData, length, seed);
             }