Linearizability: a correctness condition for concurrent objects
ACM Transactions on Programming Languages and Systems (TOPLAS)
ACM Transactions on Programming Languages and Systems (TOPLAS)
Alpha architecture reference manual
Alpha architecture reference manual
A methodology for implementing highly concurrent data objects
ACM Transactions on Programming Languages and Systems (TOPLAS)
Disjoint-access-parallel implementations of strong shared memory primitives
PODC '94 Proceedings of the thirteenth annual ACM symposium on Principles of distributed computing
Universal constructions for multi-object operations
Proceedings of the fourteenth annual ACM symposium on Principles of distributed computing
Practical implementations of non-blocking synchronization primitives
PODC '97 Proceedings of the sixteenth annual ACM symposium on Principles of distributed computing
A polylog time wait-free construction for closed objects
PODC '98 Proceedings of the seventeenth annual ACM symposium on Principles of distributed computing
Concurrent Reading While Writing
ACM Transactions on Programming Languages and Systems (TOPLAS)
Concurrent reading and writing
Communications of the ACM
f-arrays: implementation and applications
Proceedings of the twenty-first annual symposium on Principles of distributed computing
Universal Constructions for Large Objects
WDAG '95 Proceedings of the 9th International Workshop on Distributed Algorithms
Nonblocking k-compare-single-swap
Proceedings of the fifteenth annual ACM symposium on Parallel algorithms and architectures
Obstruction-Free Synchronization: Double-Ended Queues as an Example
ICDCS '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
Efficient and practical constructions of LL/SC variables
Proceedings of the twenty-second annual symposium on Principles of distributed computing
Bringing practical lock-free synchronization to 64-bit applications
Proceedings of the twenty-third annual ACM symposium on Principles of distributed computing
An optimal multi-writer snapshot algorithm
Proceedings of the thirty-seventh annual ACM symposium on Theory of computing
Efficient Wait-Free Implementation of Multiword LL/SC Variables
ICDCS '05 Proceedings of the 25th IEEE International Conference on Distributed Computing Systems
Pragmatic primitives for non-blocking data structures
Proceedings of the 2013 ACM symposium on Principles of distributed computing
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Over the past decade, a pair of instructions called load-linked (LL) and store-conditional (SC) have emerged as the most suitable synchronization instructions for the design of lock-free algorithms. However, current architectures do not support these instructions; instead, they support either CAS (e.g., UltraSPARC, Itanium) or restricted versions of LL/SC (e.g., POWER4, MIPS, Alpha). Thus, there is a gap between what algorithm designers want (namely, LL/SC) and what multiprocessors actually support (namely, CAS or RLL/RSC). To bridge this gap, a flurry of algorithms that implement LL/SC from CAS have appeared in the literature. The two most recent algorithms are due to Doherty, Herlihy, Luchangco, and Moir (2004) and Michael (2004). To implement M LL/SC objects shared by N processes, Doherty et al.'s algorithm uses only O(N + M) space, but is only non-blocking and not wait-free. Michael's algorithm, on the other hand, is wait-free, but uses O(N2 + M) space. The main drawback of his algorithm is the time complexity of the SC operation: although the expected amortized running time of SC is only O(1), the worst-case running time of SC is O(N2). The algorithm in this paper overcomes this drawback. Specifically, we design a wait-free algorithm that achieves a space complexity of O(N2 + M), while still maintaining the O(1) worst-case running time for LL and SC operations.