LinksPlatform's Platform.Hardware.Cpu Class Library.
Namespace: Platform.Hardware.Cpu
Forked from: NickStrupat/CacheLineSize.NET
NuGet package: Platform.Hardware.Cpu
using System;
using Platform.Hardware.Cpu;
class Program
{
static void Main(string[] args)
{
Console.WriteLine(CacheLine.Size); // Print the cache line size in bytes
var array = new CacheLineAlignedArray<string>(10);
Interlocked.Exchange(ref array[0], "Hello"); // All threads can now see the latest value at `array[0]` without risk of ruining performance with false-sharing
// This can be used to build collections which share elements across threads at the fastest possible synchronization.
}
// An array-like type where each element is on it's own cache-line. This is a building block for avoiding false-sharing.
public struct CacheLineAlignedArray<T>
where T : class
{
private readonly T[] buffer;
public CacheLineAlignedArray(Int32 size) => buffer = new T[Multiplier * size];
public Int32 Length => buffer.Length / Multiplier;
public ref T this[Int32 index] => ref buffer[Multiplier * index];
private static readonly Int32 Multiplier = CacheLine.Size / IntPtr.Size;
}
}PDF file with code for e-readers.
- NickStrupat/CacheLineSize.NET for the equivalent .NET Standard 1.5 library (without .NET Framework support)
- NickStrupat/CacheLineSize for the equivalent C function
- ulipollo/CacheLineSizeMex for the MATLAB function