dyncm2

dyncm2 is an open‑source software library designed for dynamic code management in embedded and real‑time computing environments. It allows firmware components to be loaded, unloaded, and reconfigured at run‑time without requiring a system reboot, thereby reducing downtime and improving resource utilization. The library was first released in 2018 by the research group at the Institute for Systems Engineering and has since been adopted by several industrial OEMs for automotive and aerospace control units.

The core of dyncm2 consists of a lightweight capsule manager that tracks the lifecycle of code modules expressed as “capules.” These capules contain compiled binaries, metadata, and inter‑module communication interfaces. The library provides a C API for installing, activating and deactivating capules, as well as for querying their status. Internally, dyncm2 uses a versioned, lock‑free memory allocator to prevent fragmentation and to guarantee deterministic memory usage. Security is addressed through signed capules and a sandboxed execution environment that isolates untrusted code.

dyncm2 is licensed under the MIT license, which encourages both academic and commercial use. A reference implementation is available on GitHub in C and C++ with comprehensive documentation and unit tests. The project includes a set of example applications, such as a dynamic sensor‑fusion stack for autonomous vehicles and a real‑time signal‑processing pipeline for medical devices. According to the project's issue tracker, the most recent stable release, version 2.3.1, added support for ARM Cortex‑M33 processors and introduced an optional Python bindings module for rapid prototyping.