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Scenario-based implementation architecture for real-time object-oriented models

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3 Author(s)
Saehwa Kim ; Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea ; Seongsoo Hong ; Naehyuck Chang

This paper presents a scenario-based implementation architecture supporting a method capable of automatically mapping real-time object-oriented models into multi-threaded implementations. To implement the synthesis tool supporting the method, we exploit existing CASE tools that support the object-based implementation architecture. Challenges in our approach are (1) how to embed our implementation model into generated design-model-dependent code and (2) how to implement the model-independent run-time-system library. In our approach, to map each scenario to a thread, we make external messages starting scenarios delivered to their mapped physical thread. The main operation of the thread is (1) waiting for any external message to be delivered and (2) executing a while loop where all internal messages are sent and received. The state transition of an active object is guarded by an object-specific mutex to maintain the run-to-completion semantics. The priority of a thread is dynamically set according to the scheduling attributes of an external message for the thread to process

Published in:

Object-Oriented Real-Time Dependable Systems, 2002. (WORDS 2002). Proceedings of the Seventh International Workshop on

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