Dynamic resource allocation scheme for efficient use of a queue

Details Dynamic resource allocation scheme for efficient use of a queue Dynamic resource allocation scheme for efficient use of a queue

2003-06-18

2010-11-30

Hafiz, Tariq (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

C710S005000, C710S033000, C710S054000, C710S055000, C710S056000

Reexamination Certificate

active

07844758

ABSTRACT:
A method and mechanism for managing requests to a resource. A request queue receives requests from multiple requestors and maintains a status for each requestor indicating how many requests the requestor has permission to issue. Upon initialization, the request queue allots to each requestor a predetermined number of “hard” entries, and a predetermined number of “free” entries. Un-allotted entries are part of a free pool of entries. If a requestor has an available entry, the requestor may submit a request to the request queue. After receiving a request, the request queue may allot a free pool entry to the requestor if the free pool currently has entries available. Upon de-allocation of a queue entry, if the entry corresponds to a hard entry, then the hard entry is re-allotted to the same requestor. If the entry is a free entry, the entry is made available and a free pool counter is incremented.

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