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Resource Sharing in an Enhanced Rate-Based Execution ModelXin Liu and Steve GoddardTo appear at Euromicro Conference on Real-Time Systems (ECRTS03), Porto, Portugal, 2-4 July 2003
AbstractA theory of resource sharing in a mixed system with hard real-time and non-real-time processing requirements is presented. The real time processing is modeled as rate-based execution (RBE) tasks whose resource needs are known in advance. The non-real-time processing is modeled as aperiodic requests and dynamically mapped to weight-based variable rate execution tasks. The resource sharing requirements of the aperiodic requests are unknown a priori and only become known when a critical section is reached. A scheduling algorithm that supports resource sharing without deadlock in such a mixed system is presented with a sufficient off-line schedulability condition.
10 Mar 2003 at 21:02:27 |