Bringing familiar POSIX programming models to the highest levels of safety-critical flight software.
Inside each ARINC 653 partition, AvionicsOS provides POSIX.1b threads scheduled with fixed-priority preemption and priority ceiling emulation to prevent priority inversion deadlocks on shared mutexes.
By eliminating unsafe POSIX functions (such as fork, exec, and unrestricted malloc), the PSE54 profile delivers the ideal balance between developer productivity and rigorous certification tractability.