Abstract
We present a highly concurrent priority queue algorithm based on the B-link tree, which is a B +-tree in which every node has a pointer to its right sibling. The algorithm is built on the concurrent B-link tree algorithms. Since the priority queue is based on highly concurrent search structure algorithms, a large number of insert operations can execute concurrently with little or no interference. We first present an algorithm that executes deletemin operations serially. We extend the serialized-deletemin algorithm to allow both parallel and concurrent deletemin operations. We discuss a decisive operation serializable algorithm that permits concurrent deletemin operations, and an algorithm in which p processors cooperate to perform p deletemin operations in O(log p) time.
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