Real Time and Concurrency Patterns Questions

Design patterns and practices for meeting timing constraints and coordinating concurrent activity in embedded systems. Topics include cooperative and preemptive scheduling models, task priority design, interrupt latency and mitigation strategies, deferred work and task offload, synchronization primitives such as mutexes and semaphores, priority inversion and priority inheritance, and lock free techniques where appropriate. Candidates should reason about worst case execution time, deadlines and jitter, trade offs between latency and throughput, and testing approaches for timing correctness. Also include safe coding patterns for interaction between interrupt context and thread context.