Mecanisme de verrouillage pour des environnements informatiques simultanes

Latch mechanism for concurrent computing environments

Abstract

A stealable latch mechanism for programming environments supporting concurrent tasks. The latch mechanism has a function for providing a latch to a requesting task, a function for a task holding a latch to release the held latch, a function for a task holding a latch to mark the held latch stealable, and a function for a task holding a latch marked stealable to mark the latch unstealable where the held latch is not marked stolen by another task. The function for providing a latch to a requesting task provides that the requesting task will receive on request a latch marked stealable and held by a holding task. Any resources associated with the stealable latch are placed in a consistent state prior to the requesting task accessing the resources.

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