Apparatus for maintaining a limit value of a resource

Details Apparatus for maintaining a limit value of a resource Apparatus for maintaining a limit value of a resource

2011-05-03

2011-05-03

Kindred, Alford W (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output command process

C710S036000, C710S039000, C705S035000, C705S039000

Reexamination Certificate

active

07937503

ABSTRACT:
An apparatus for maintaining a limit value of a resource for use in a concurrent limit checking system comprising: a resource having an associated limit value; a plurality of request handlers having access to a plurality of sub-limit values, wherein the sub-limit values when summed equal the limit value and wherein each request handler is operable to check a request value of a request for consuming the resource against its associated sub-limit value, in order to determine whether the request can be satisfied. The apparatus comprises a coordinator, responsive to the first request handler determining that the first request cannot be satisfied, for generating a coordination request comprising a coordination request value required to satisfy the first request, a receiver for receiving a coordination response from the second request handler; and an updater for updating the sub-limit values in accordance with the coordination request value.

REFERENCES:
patent: 4694397 (1987-09-01), Grant et al.
patent: 7505937 (2009-03-01), Dilip et al.
patent: 7536350 (2009-05-01), Bent et al.
patent: 7680734 (2010-03-01), Bent et al.
patent: 2006/0059085 (2006-03-01), Tucker

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