Spin-Based Reader-Writer Synchronization for Multiprocessor Real-Time Systems

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Provided by: University of North Carolina
Topic: Hardware
Format: PDF
With the transition to multicore architectures by most major chip manufacturers, multiprocessors are now a standard deployment platform for (soft) real-time applications. Reader preference, writer preference, and task-fair reader-writer locks are shown to cause undue blocking in multiprocessor real-time systems. Phase-fair reader writer locks, a new class of reader-writer locks, are proposed as an alternative. Three local-spin phase-fair lock algorithms, one with constant remote-memory-reference complexity, are presented and demonstrated to be efficiently implementable on common hardware platforms.
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