Computer-implemented multi-resource shared lock

Details Computer-implemented multi-resource shared lock Computer-implemented multi-resource shared lock

G - Physics

06

F

G06F 9/46 (2006.01)

Patent

CA 2757394

In one embodiment of a computer-implemented system, comprising a plurality of computer entities and multiple resources, one of the computer entities may request a multi-resource lock to one of the multiple resources; the one resource determines whether a resource lock is available at the one resource and, if so, the one resource communicates with all peer resources to determine whether a resource lock is available; if the peer resources indicate a resource lock is available, lock all of the resources to the requesting computer entity, and the one resource communicates the lock of the resources to the requesting computer entity; and if any the resource indicates contention for the multi-resource lock, the one resource communicates the contention to the requesting computer entity, and the requesting computer entity backs off the multi-resource lock request and, after a random time interval, repeats the request.

Selon un mode de réalisation de la présente invention, un système informatique comprend une pluralité d'entités informatiques et des ressources multiples, une des entités informatique pouvant demander un verrou multiressource à une des ressources multiples. Cette ressource détermine si oui un non un verrou de ressource est disponible au niveau de la ressource. Si la réponse est positive, la ressource entre en communication avec toutes les ressources homologues pour déterminer si un verrou de ressource est disponible ou non. Si les ressources homologues indiquent qu'un verrou de ressource est disponible, toutes les ressources sont verrouillées pour l'entité informatique requérante, et la ressource transmet le verrou des ressources à l'entité informatique requérante. Si une quelconque ressource indique un conflit concernant un verrou multiressource, la ressource transmet informe l'entité informatique requérante du conflit et l'entité informatique requérante abandonne la requête de verrou multiressource et, après un laps de temps aléatoire, reformule la requête.

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