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- W4291653331 abstract "Spin locks are widely used in embedded systems to coordinate mutually exclusive accesses to shared resources from different tasks. Although the design and analysis of locking protocols have been intensively studied for <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>sequential</i> real-time tasks, there have been few works on this topic for <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>parallel</i> real-time tasks. In this paper, we study the analysis of parallel real-time tasks modeled by directed acyclic graphs (DAGs) under global fixed priority scheduling using both preemptable and non-preemptable spin locks to protect accesses to shared resources in three commonly used request serving orders (unordered, FIFO-order and priority-order). In particular, we develop a general schedulability analysis framework where the blocking time caused by resource contention is formally defined, so that the blocking analysis can be performed independently and easy to combine with the traditional interference analysis techniques. Moreover, we present a unified blocking analysis technique where the blocking time is analyzed in a scalable manner based on a linear-programming (LP) approach, making our method flexible and extendable. We conduct comprehensive experiments to evaluate our method with other the-state-of-the-art approaches for scheduling real-time parallel tasks using semaphores and spin locks." @default.
- W4291653331 created "2022-08-15" @default.
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- W4291653331 date "2023-01-01" @default.
- W4291653331 modified "2023-09-26" @default.
- W4291653331 title "A Unified Blocking Analysis for Parallel Tasks With Spin Locks Under Global Fixed Priority Scheduling" @default.
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- W4291653331 doi "https://doi.org/10.1109/tc.2022.3198634" @default.
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