OCEOS is a real-time pre-emptive fixed priority operating system that can be used in applications that require European Cooperation for Space Standardization Category B or ISO 26262 standards. It has a small memory footprint (<10 kBytes), requires only one system stack rather than a stack for each task, and provides support for precisely timed data outputs independent of task scheduling. It is available initially for applications running on single-core ARM and SPARC based hardware with multicore release due shortly. The support of the European Space Agency in developing OCEOS is acknowledged. OCEOS provides the following facilities:
- Fixed priority pre-emptive scheduling
- Based on Stack Resource Policy – unbounded priority inversion, chained blocking, and deadlocks cannot occur.
- Single stack rather than separate stack for each task
- Small code footprint ( <10 kBytes for scheduling and mutex)
- Mutex, Counting Semaphore, and Data Queue support
- High precision timed actions (data output and task start
- Supports SPARC V8 LEON2/3/4 and ARM Cortex-M single core targets
- Enhancements for Cobham-Gaisler GR716 applications
- DMON debug tool support (execution timeline, CPU usage)
- Support & ISVV services available from OCE
- Gold standard customer support package
- Developed to ECSS Category B and ISO 26262 standards
- Developed in cooperation with European Space Agency (ESA)
Click here for detailed technical information from the OCE wiki