Bagpipe

A Bagpipe is an implementation of a concurrent pool data-structure. It is built on top of an implementation of a concurrent queue or stack data-structure. It shards requests for pushing and popping objects among a small set of queues or stacks, with load balancing performed in a manner that is low in coordination among threads. Contention is automatically managed by unrolling tight loops within the underlying queues and allowing threads to attempt pushing on another queue if a CAS failure occurs.

Other Features

This repo also includes implementations of concurrent queues such as the FAAArrayQueue and the YangCrummeyQueue. These are linearizable non-blocking multi-producer multi-consumer queues that may be of independent interest, as they scale better than the queues present in the crossbeam library (to my knowledge).