.NET Runtime

The System.Drawing.Primitives assembly provides fundamental drawing APIs that do not require access to native GDI+ libraries. It is designed to be cross-platform, supporting all officially supported .NET platforms (not just Windows).

Key types provided by this assembly include:

• Point
• Size

Mono is the .NET runtime implementation used for specific workloads, including:

• Mobile: iOS and Android
• Browser: WebAssembly (WASM)
• WASI: WebAssembly System Interface

The dotnet-pgo tool is an experimental utility used to post-process application trace data (collected via dotnet trace or perfview) into profile data files. These files are used for two primary purposes:

1. Producing .jittrace files: These allow you to time-shift JIT compilation from later in the application process to earlier in the process.
2. Producing .mibc files: These serve as input for the crossgen2 tool to assist in Ahead-of-Time (AOT) compilation.

Requirement: The tool requires MethodDetails events. These are natively produced by the .NET 5.0 runtime or can be obtained by modifying the .NET Core 3 runtime to produce them.

The Microsoft.Extensions.Logging.Abstractions package provides the core interfaces and types for logging in .NET. It defines the contracts that logging implementations must follow. While this package contains the abstractions, the actual logging logic is provided by implementations found in Microsoft.Extensions.Logging or other third-party logging providers.

Key types you will interact with include:

• ILogger: The primary interface for logging messages.
• ILoggerFactory: Used to create ILogger instances.
• ILogger<TCategoryName>: A generic version of ILogger that automatically categorizes logs by the type name.
• LogLevel: An enumeration defining the severity of the log message.
• LoggerMessage: Used for high-performance logging.
• NullLogger: A no-op implementation used when no logging is desired.

The Microsoft.Extensions.Diagnostics.Abstractions package provides the core interfaces and abstractions for diagnostics in .NET. These abstractions allow developers to define diagnostic instrumentation that can be implemented by concrete classes in Microsoft.Extensions.Diagnostics or other specialized diagnostics packages.

Key features include support for metrics instrumentation, allowing you to define how measurements are captured and listened to within an application.

The System.Security.Cryptography assembly provides the core cryptographic support for .NET. It includes implementations and wrappers for various cryptographic primitives and protocols, such as:

• Hashing: e.g., SHA256
• Symmetric-key message authentication: e.g., HMACSHA256
• Symmetric-key encryption: e.g., Aes
• Symmetric-key authenticated encryption: e.g., AesGcm
• Asymmetric (public/private key) cryptography: e.g., RSA, ECDsa, or ECDiffieHellman
• X.509 public-key certificates: e.g., X509Certificate2

Detailed API documentation is available at the official Microsoft Learn sites for System.Security.Cryptography and X509Certificates.