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. 02, 1982
Filed:
Apr. 19, 1974
Applicant:
Inventors:
Charles W Bachman, Lexington, MA (US);
Jacques Bouvard, Wellesley, MA (US);
Assignee:
Honeywell Information Systems Inc., Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ; 364300 ;
Abstract
A method and apparatus for detecting a deadlock condition where two or more processes are waiting for events which cannot happen. Firmware is provided to examine the request of a first process of a group of processes for assignment of a first resource of a group of resources, and to determine whether said first resource is or is not currently assigned to a second process of said group of processes which said second process is already waiting directly or indirectly for a second resource of said group of resources which said second resource is currently assigned to the said first process.