HotPathGuard.Abstractions 0.2.0

.NET Standard 2.0

dotnet add package HotPathGuard.Abstractions --version 0.2.0

NuGet\Install-Package HotPathGuard.Abstractions -Version 0.2.0

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="HotPathGuard.Abstractions" Version="0.2.0" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="HotPathGuard.Abstractions" Version="0.2.0" />
                    

                            Directory.Packages.props

<PackageReference Include="HotPathGuard.Abstractions" />
                    

                            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 HotPathGuard.Abstractions --version 0.2.0

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: HotPathGuard.Abstractions, 0.2.0"

#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 HotPathGuard.Abstractions@0.2.0

#: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=HotPathGuard.Abstractions&version=0.2.0
                    

                            Install as a Cake Addin

#tool nuget:?package=HotPathGuard.Abstractions&version=0.2.0
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

HotPathGuard

HotPathGuard is a small Roslyn analyzer package for code where accidental managed allocations are correctness bugs, not just performance smells.

Mark a type or member with [HotPath], and the analyzer reports common allocation-prone constructs inside that hot path. Cold or diagnostic helpers near a hot path can be marked with [HotPathAllocationAllowed("reason")], but hot paths may not call those helpers.

Packages

Package	Purpose
`HotPathGuard.Abstractions`	Public attributes used by libraries and applications.
`HotPathGuard.Analyzers`	Roslyn analyzer package that reports `HPG` diagnostics.

Example

using HotPathGuard;

[HotPath]
public sealed class AudioMixer
{
    public void MixFrame(ReadOnlySpan<float> input, Span<float> output)
    {
        // HPG001: reference-type allocation in a hot path.
        var scratch = new float[1024];
    }
}

Diagnostics

ID	Title
`HPG001`	Hot path contains an allocation
`HPG002`	Hot path calls an allocating API
`HPG003`	Hot path creates a compiler state machine
`HPG004`	Allocation allowance requires a reason
`HPG005`	Hot path calls a cold allocation-allowed member
`HPG006`	Hot path method exceeds branch complexity limit

Branch Budgets

HotPathAttribute.MaxBranches can put a simple branch-count budget on a hot-path method:

[HotPath(MaxBranches = 2)]
public int SelectVoice(int a, int b, int c)
{
    if (a > 0) return a;
    if (b > 0) return b;
    if (c > 0) return c; // HPG006
    return 0;
}

Philosophy

HotPathGuard is a guardrail, not a profiler or a formal allocation proof. It catches common source-level mistakes in code that you already know is hot: object and array creation, closures, method-group-to-delegate conversions, boxing, interpolated strings, LINQ and other known allocating APIs, async and iterator state machines, and calls into explicitly allocation-allowed members.

Build

Requires the .NET 10 SDK.

dotnet build .\HotPathGuard.slnx
dotnet test .\HotPathGuard.slnx

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. 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 was computed. 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 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.

.NETStandard 2.0
- No dependencies.

NuGet packages (2)

Showing the top 2 NuGet packages that depend on HotPathGuard.Abstractions:

Package	Downloads
HotPathGuard.Analyzers Roslyn analyzers for enforcing allocation-conscious hot-path performance contracts in .NET code.	322
Copper6510 Cycle-stepped MOS 6510 CPU emulation core with hardware interrupt lines and common undocumented opcode support.	188

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
0.2.0	144	7/6/2026
0.1.0	285	7/3/2026

Detect method-group-to-delegate conversions in hot paths.