Egodystonic.Atomics 1.0.0-alpha1

This is a prerelease version of Egodystonic.Atomics.
dotnet add package Egodystonic.Atomics --version 1.0.0-alpha1                
NuGet\Install-Package Egodystonic.Atomics -Version 1.0.0-alpha1                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Egodystonic.Atomics" Version="1.0.0-alpha1" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Egodystonic.Atomics --version 1.0.0-alpha1                
#r "nuget: Egodystonic.Atomics, 1.0.0-alpha1"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Egodystonic.Atomics as a Cake Addin
#addin nuget:?package=Egodystonic.Atomics&version=1.0.0-alpha1&prerelease

// Install Egodystonic.Atomics as a Cake Tool
#tool nuget:?package=Egodystonic.Atomics&version=1.0.0-alpha1&prerelease                


Atomics is a C#/.NET Standard 2.0 library aimed at providing thread-safe wrappers for mutable shared state variables.

Please note: This library is currently in alpha. There is no inline documentation yet and the API is liable to minor changes.

Library Features

  • Provides built-in mechanisms for operating on mutable variables in discrete, atomic operations; including 'basics' like compare-and-swap/increment etc. but also more complex or arbitrary routines, making it easier to reason about potential concurrent accesses and eliminate accidental race conditions.
  • Helps ensure that all accesses to wrapped variables are done in a threadsafe manner. Unlike with other synchronization primitives, mutable variables wrapped in an Atomic<T> wrapper are much harder to accidentally alter in an unsafe way.
  • Almost all operations are "lock-free", resulting in high-scalability for almost any contention level and any number of threads; with a suite of benchmarks used to measure performance and guide implementation.
  • A full suite of unit tests with a custom-built harness for testing the entire library with multiple concurrent threads.
  • Support for custom equality (e.g. compare-and-swap with two IEquatable<> objects will use their Equals() function for comparison).
  • Library is targeted to .NET Standard 2.0 which is supported by most modern .NET platforms.
  • MIT licensed.

Library Advantages

Although the best design for threadsafe code is to have no mutable state at all, sometimes it is a necessity for performance or reasons of complexity.

As growth in single-core computing power is slowing, scaling via parallelism with higher CPU core counts is becoming an increasingly important way to increase application responsiveness. The latest generation of desktop CPUs have more threads than ever before, with the flagship specs currently being Intel's i9 9900k (16 threads) and AMD's Threadripper 2950X (32 threads).

Currently the .NET FCL/BCL offers a great suite of tools for writing parellized/concurrent code with async/await, concurrent & immutable collections, Tasks and the TPL, and more fundamental constructs like locks, semaphores, reader-writer locks, and more.

However, one potentially missing element is the provision for threadsafe single variables, often used as part of a larger concurrent algorithm or data structure. Many other languages provide a similar library, including C++, Java, Rust, and Go.


For more documentation, please visit the github page at

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
1.0.0-alpha1 636 2/14/2019