Efficient embedded runtime systems through port communication optimization

Traditionally shared data areas have been used to efficiently communicate between embedded system tasks, such as periodically executing control system tasks. Such implementations are highly sensitive to the execution order of tasks, i.e., they depend on a static timeline. SAE AADL supports a port communication model that ensures deterministic processing of signal streams. In this paper we discuss an analytical framework that allows us to optimize such port-based communication by generating a runtime executive that utilizes shared data areas where appropriate, while ensuring the timing semantic assumed by the control application.