lct: add external MPMC queue implementation #81
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Currently, the default
LCI_CQ_TYPEis a self-implemented fixed-size atomic-based array queuearray_atomic_faa.With this PR, users can use the env var
LCI_CQ_TYPEto choose the completion queue type as one of the following external implementations.export LCI_CQ_TYPE=ms: Michael Scott Queueexport LCI_CQ_TYPE=lcrq: LCRQexport LCI_CQ_TYPE=lprq: LPRQexport LCI_CQ_TYPE=faaarray: FAAArray Queueexport LCI_CQ_TYPE=lazy_index: LazyIndexArrayQueueAll the new queues are dynamically resizable.
Acknowledgment: Source codes are based on Concurrency Freaks and lprq zenodo.