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:
Dec. 25, 1990
Filed:
Dec. 29, 1987
Didier F Giroir, Antibes, FR;
Alvin P Mullery, Cagnes-Sur-Mer, FR;
Andre Pauporte, La Colle Sur Loup, FR;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A non-locking queueing mechanism is described for transferring information from a sending unit to a receiving unit through a queue in which there is no interference between the independent units (sender and receiver) during enqueueing or dequeueing. The invention thus avoids any form of interlock or serialism. The mechanism includes a first pointer (D), identifying the element area in the queueing device where the last dequeued information element, if any, was located, and a second pointer register for logging a second pointer (E) identifying the element area in the queueing device where the last enqueued information element, if any, was located, a first control block activated by the sending unit to enqueue the information element into the queueing device and for updating the second pointer, and a second control block activated by the recieving unit to dequeue the information element from the queueing device and for updating the first pointer.