Title :
Architectural abstractions and time modelling in HyperReal
Author :
De Paoli, Flavio ; Tisato, Francesco
Author_Institution :
Dipartimento di Sci. dell´´Inf., Milan Univ., Italy
Abstract :
This paper describes the foundation of the HyperReal project. It is centred on the definition of architectural abstractions that permit designing modular RT systems. Basic components are reactive agents manipulating data and connectors supporting interactions among agents. Such components are not aware of the system configuration nor of the control strategy, which are managed by a configurator and by a controller respectively. The controller relies on a time-driven model of control, and separates the definition of plans from the dispatching of the actions they define. Plans are associated with virtual clocks which support the explicit management of time. The architectural abstractions allow a designer to fully control the temporal behaviour of the system and to reuse components under different application-oriented control models
Keywords :
real-time systems; software reusability; systems analysis; temporal logic; HyperReal project; application-oriented control models; architectural abstractions; control strategy; management of time; modular real time systems design; reactive agents; system configuration; temporal behaviour; time modelling; time-driven model; virtual clocks; Application software; Clocks; Communication system control; Connectors; Control systems; Dispatching; Operating systems; Real time systems; Stress; Timing;
Conference_Titel :
Real-Time Systems, 1995. Proceedings., Seventh Euromicro Workshop on
Conference_Location :
Odense
Print_ISBN :
0-8186-7112-2
DOI :
10.1109/EMWRTS.1995.514315