Topic analysis

Library for fast mapping of Java records to native memory

Typed off-heap memory for Java 25 and greater. TypedMemory is a Java library for working with contiguous off-heap memory through strongly typed views . It builds on the Java Foreign Function & Memory (FFM) API and lets you map Java record types onto native memory with a simple, expressive API. Instead of manually managing layouts, offsets, and low-level access patterns for every structure, TypedMemory gives you a type-safe abstraction over memory while still preserving the low-level control needed for systems, interop, graphics, simulation, and data-oriented programming. Working directly with raw memory in Java is powerful, but often verbose and repetitive. TypedMemory aims to make off-heap programming feel more natural by providing: This makes it useful for: TypedMemory is currently experimental . The core API is already usable, but the project is still evolving and may introduce breaking changes as the design is refined. Planned features to implement: TypedMemory is built with Maven and targets Java 25. Compile the library: Install TypedMemory into your local Maven repository: TypedMemory is available from Maven Central, so you can add it directly to your project's pom.xml : If your application uses the Java module system, add this to module-info.java : TypedMemory preserves the underlying memory layout, making it easier to inspect and reason about the actual structure stored off-heap. This is especially useful when: TypedMemory can also create typed views over an existing MemorySegment . This is useful when memory comes from: Typical operations include: TypedMemory is not trying to replace the FFM API. Instead, it sits one level above it: The goal is to make low-level Java memory programming feel typed, direct, and practical . Records provide a natural schema-like model for structured memory. TypedMemory uses this to bridge Java data definitions and low-level memory representation. TypedMemory is especially relevant for: The following are the limitations Feedback, issues, and suggestions are welcome. If you are interested in: then contributions and discussion are highly appreciated. GitHub: mamba-studio/TypedMemory TypedMemory is licensed under Apache License 2.0