The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 1992
Filed:
Jun. 26, 1989
Margaret A Dong, San Jose, CA (US);
Richard K Treiber, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for expanding and contracting a resource pool dynamically, i.e. in response to demand for the resources, is disclosed. Resources are allocated for use from a single master pool 22. The overall pool of available resources is expanded by creating an extension pool and adding its resources to the master pool. The master pool can theoretically be expanded to the limits of the number of resources available in the system. To contract the pool dynamically, first one of the extension pools is selected to be freed (FREE.sub.-- POOL 66). Those resources owned by the freed pool but still in the master pool (i.e., not in use) are moved to the extension pool, preventing their reuse. Resources in use which are owned by the freed pool are labeled by changing their home address 52 so that they will be returned to the extension pool instead of to the master pool. Once all such resources have been returned to the freed extension pool it is deleted, thereby contracting the overall pool of resources. Pseudocode implementations of the procedures for manipulating storage buffers and buffer pools are included.