BuRSt is a framework for writing realtime software in the Rust programming language. It enforces static and dynamic guarantees about the latency of operations. It runs in tiny environments and does not depend on the Rust standard library.
NOTE: BuRSt is a proof-of-concept. It is not ready for use.
BuRSt enforces a two-phase programming model, wherein work with unpredicatble latency is performed in the initial setup phase, followed by a realtime phase where operations must have known latencies. All allocation is performed in the setup phase.
It replaces the Rust standard library with a minimal set of platform-independent components optimized for realtime programming, including realtime-suitable replacements for the common collection and synchronization types.
It further offers a selection of platform-specific, and
platform-independent, components built on burst-core that are
designed to encourage best practices. It runs on Linux, but is
intended to be compatible with other real-time environments.
No BuRSt crates depend on std. The BuRSt framework is a
replacement for std for embedded systems.
BuRSt only runs on Rust nightly.
burst-core defines the BuRSt programming model along with a
number of platform-independent data structures suitable for realtime
programming.
A burst program begins by calling burst::begin_setup to retrieve the
singleton setup token, St. The setup token is passed to all
functions that might allocate, have unpredicatble latency, or might
otherwise cause unpredictable system behavior.
burst-core defines the standard box and collection types, including
Box, Rc, Arc, Vec, and HashMap. These are generally identical
to the std types of the same name, except that all operations which
might allocate take a reference to &St.
Vec and HashMap, though their capacities are frozen after the
setup phase, may still be mutated during the realtime phase.
The core has few platform dependencies, mainly the allocator, the
random number generator, and platform-specific facilities for ensuring
real-time operation such as mlockall. All platform-specific code is
abstracted into the burst-core-pal-linux crate for future
portability.
TODO
MIT/Apache-2.0