CryptoHives.Foundation.Threading 0.5.34-preview

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. .NET Framework 4.6.2 This package targets .NET Framework 4.6.2. The package is compatible with this framework or higher.
This is a prerelease version of CryptoHives.Foundation.Threading. 
dotnet add package CryptoHives.Foundation.Threading --version 0.5.34-preview
                    


                    

                
NuGet\Install-Package CryptoHives.Foundation.Threading -Version 0.5.34-preview
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="CryptoHives.Foundation.Threading" Version="0.5.34-preview" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="CryptoHives.Foundation.Threading" Version="0.5.34-preview" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="CryptoHives.Foundation.Threading" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add CryptoHives.Foundation.Threading --version 0.5.34-preview
                    


                    

                
#r "nuget: CryptoHives.Foundation.Threading, 0.5.34-preview"
#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. 
#:package CryptoHives.Foundation.Threading@0.5.34-preview
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=CryptoHives.Foundation.Threading&version=0.5.34-preview&prerelease
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=CryptoHives.Foundation.Threading&version=0.5.34-preview&prerelease
                    


                            Install as a Cake Tool

🛡️ CryptoHives Open Source Initiative 🐝

An open, community-driven cryptography and performance library collection for the .NET ecosystem, developed and maintained by The Keepers of the CryptoHives.

CryptoHives.Foundation.Threading

NuGet Tests

High-performance, pooled async synchronization primitives for .NET — designed to eliminate Task and TaskCompletionSource<T> allocations on the hot path.

All primitives are backed by ObjectPool<T> and return ValueTask<T> to minimize per-operation allocations in high-throughput scenarios.

Included: This package automatically bundles CryptoHives.Foundation.Threading.Analyzers — Roslyn analyzers that detect common ValueTask misuse patterns at compile time, applied transitively to all consumers.

📦 Installation

dotnet add package CryptoHives.Foundation.Threading

✨ Key Features

  • Pooled primitives — synchronization objects backed by Microsoft.Extensions.ObjectPool
  • ValueTask-based APIs — avoid Task allocations when operations complete synchronously
  • CancellationToken support — full cancellation across all primitives, allocation-free on modern .NET
  • ConfigureAwait support — works naturally with .ConfigureAwait(false) in library code
  • Configurable continuations — control synchronous vs. asynchronous continuation scheduling
  • Custom pools — supply your own IGetPooledManualResetValueTaskSource<T> for fine-grained control
  • Drop-in replacement — change namespace, keep the same using-based patterns
  • Included analyzers — ValueTask misuse caught at compile time

🚀 Quick Examples

Mutual Exclusion — AsyncLock

using CryptoHives.Foundation.Threading.Async.Pooled;

private readonly AsyncLock _lock = new();

public async Task DoWorkAsync(CancellationToken ct)
{
    using (await _lock.LockAsync(ct).ConfigureAwait(false))
    {
        // Critical section — only one task at a time
        await ModifySharedStateAsync().ConfigureAwait(false);
    }
}

Producer-Consumer — AsyncAutoResetEvent

private readonly AsyncAutoResetEvent _itemReady = new(initialState: false);
private readonly Queue<Item> _queue = new();

// Producer
public void Enqueue(Item item)
{
    _queue.Enqueue(item);
    _itemReady.Set(); // Releases exactly one waiter
}

// Consumer
public async Task<Item> DequeueAsync(CancellationToken ct)
{
    await _itemReady.WaitAsync(ct).ConfigureAwait(false);
    return _queue.Dequeue();
}

Broadcast — AsyncManualResetEvent

private readonly AsyncManualResetEvent _ready = new(initialState: false);

public async Task InitializeAsync()
{
    await LoadConfigurationAsync().ConfigureAwait(false);
    _ready.Set(); // All waiters are released at once
}

public async Task UseServiceAsync(CancellationToken ct)
{
    await _ready.WaitAsync(ct).ConfigureAwait(false);
    // Service is initialized
}

Bounded Concurrency — AsyncSemaphore

private readonly AsyncSemaphore _semaphore = new(initialCount: 4);

public async Task FetchAsync(CancellationToken ct)
{
    await _semaphore.WaitAsync(ct).ConfigureAwait(false);
    try
    {
        await CallExternalServiceAsync().ConfigureAwait(false);
    }
    finally
    {
        _semaphore.Release();
    }
}

Read-Write Separation — AsyncReaderWriterLock

private readonly AsyncReaderWriterLock _rwLock = new();

public async Task<Data> ReadAsync(CancellationToken ct)
{
    using (await _rwLock.ReaderLockAsync(ct).ConfigureAwait(false))
        return _cache.Get();
}

public async Task WriteAsync(Data data, CancellationToken ct)
{
    using (await _rwLock.WriterLockAsync(ct).ConfigureAwait(false))
        _cache.Set(data);
}

Custom Pool

using CryptoHives.Foundation.Threading.Pools;

var policy = new PooledValueTaskSourceObjectPolicy<bool>();
var pool   = new ValueTaskSourceObjectPool<bool>(policy, maximumRetained: 64);

var evt = new AsyncAutoResetEvent(
    initialState: false,
    runContinuationAsynchronously: true,
    pool: pool);

⚠️ ValueTask Contract

  1. Await a ValueTask exactly once — multiple await or AsTask() calls may throw InvalidOperationException.
  2. Avoid AsTask() before signaling — when RunContinuationsAsynchronously=true (the default), storing the result of AsTask() before the primitive is signaled causes severe performance degradation. Await the ValueTask directly wherever possible.
  3. Always await or discard — if a waiter is not consumed, the underlying IValueTaskSource is not returned to the pool.

The included Threading.Analyzers enforce these rules automatically at compile time.

📚 Documentation

Resource Link
Full package documentation cryptohives.github.io/Foundation/packages/threading
API reference cryptohives.github.io/Foundation/api
Benchmarks cryptohives.github.io/Foundation/packages/threading/benchmarks
Threading.Analyzers cryptohives.github.io/Foundation/packages/threading.analyzers
Source repository github.com/CryptoHives/Foundation

🔐 Security Policy

If you discover a vulnerability, please do not open a public issue. Follow the guidelines on the CryptoHives Security Page.

⚖️ License

MIT — © 2026 The Keepers of the CryptoHives

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 is compatible.  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.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-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 is compatible. 
.NET Framework net461 was computed.  net462 is compatible.  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

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
0.5.34-preview 0 6/2/2026
0.5.21-preview 107 5/2/2026
0.5.13-preview 62 4/2/2026
0.4.21-preview 71 3/1/2026
0.4.11-preview 77 2/14/2026
0.3.19-preview 77 1/26/2026
0.2.43-preview 79 1/9/2026
0.2.33-preview 425 12/9/2025
0.2.30-preview 339 12/8/2025
0.2.28-preview 272 12/7/2025
0.2.26-preview 214 12/6/2025
0.2.22-preview 562 12/1/2025
0.2.17-preview 174 11/23/2025
0.2.13-preview 397 11/20/2025
0.2.11-preview 989 11/19/2025

https://github.com/CryptoHives/Foundation/releases