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A real-time locking protocol

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4 Author(s)
Lui Sha ; Software Eng. Inst., Carnegie-Mellon Univ., Pittsburgh, PA, USA ; Rajkumar, R. ; Sang Hyuk Son ; Chun-Hyon Chang

The authors examine a priority driven two-phase lock protocol called the read/write priority ceiling protocol. It is shown that this protocol leads to freedom from mutual deadlock. In addition, a high-priority transactions can be blocked by lower priority transactions for at most the duration of a single embedded transaction. These properties can be used by schedulability analysis to guarantee that a set of periodic transactions using this protocol can always meet its deadlines. Finally, the performance of this protocol is examined for randomly arriving transactions using simulation studies

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Computers, IEEE Transactions on  (Volume:40 ,  Issue: 7 )