SIRAP: a synchronization protocol for hierarchical resource sharingin real-time open systems
EMSOFT '07 Proceedings of the 7th ACM & IEEE international conference on Embedded software
Resource holding times: computation and optimization
Real-Time Systems
Sharing resources among independently-developed systems on multi-cores
ACM SIGBED Review
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The duration of time for which each application locks each shared resource is critically important in composing multiple independently-developed applications upon a shared "open" platform. The concept of resource hold time (RHT) -- the largest length of time that may elapse between the instant that an application system locks a resource and the instant that it subsequently releases the resource--is formally defined and studied in this paper. An algorithm is presented for computing resource hold times for every resource in an application that is scheduled using Earliest Deadline First scheduling, with resource access arbitrated using the Stack Resource Policy. An algorithm is presented for decreasing these RHT's without changing the semantics of the application or compromising application feasibility.