Controlling atomic updates of indexes using hardware transactional memory

摘要

A current state of one or more entries in a mapping table that are associated with latch-free updates of a data structure that uses indirection mapping tables is accessed. A transformation of the current state of the one or more entries in the mapping table to a transformed state of the entries in the mapping table, is controlled. The controlling includes initiating an atomic multi-word compare-and-swap (MWCAS) operation on a plurality of words using a hardware transactional memory (HTM) resident in a device processor, and the MWCAS operation is performed using hardware primitive operations of the HTM, via the device processor. A transformation of a current state of the data structure to an updated state of the data structure, is controlled, via the transformation of the current state of the one or more entries in the mapping table to the transformed state of the entries in the mapping table.