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. 23, 2014
Filed:
Aug. 29, 2008
David Lloyd, Belleville, WI (US);
David Lloyd, Belleville, WI (US);
Red Hat, Inc., Raleigh, NC (US);
Abstract
Embodiments relate to systems and methods for a shared object lock under state machine control. An operating system or virtual machine environment can host a set of multiple executing threads, and provide those threads with mutual access to one or more objects such as storage objects, memory objects, or others. The threads can independently request that the object be locked or unlocked, and the locked or unlocked state can be shared between the threads. Rather than communicate with the object(s) directly, in embodiments the threads communicate with a state machine that in turn controls the state of the object(s). When a request to change the state of the object(s) is received, the state machine can permit the object(s) to change between locked, unlocked, or other states based on the current state of the machine and the received message. Contention between threads can be reduced or eliminated.