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:
May. 13, 1997
Filed:
Jun. 09, 1995
Andrew E Davidson, Boulder Creek, CA (US);
Maurice Balick, Fairhaven, MD (US);
Alan Snyder, Palo Alto, CA (US);
Sun Microsystems, Inc., Mountain View, CA (US);
Abstract
An improved technique for serializing access to multithreading unsafe resources is described. A baton manager is used to manage the serializing of accesses to a multithreading unsafe resource. For a thread to access the multithreading unsafe resource, the thread must first obtain a baton from the baton manager. Then, once the thread has finished accessing the multithreading unsafe resource, the thread releases the baton to the baton manager. Hence, by using the baton manager to manage the baton, accesses to multithreading unsafe resources are serialized while program crashes or deadlocks are minimized. The multithreading unsafe resource will typically have a plurality of baton objects associated therewith. The baton objects are objects of object-oriented programming. The baton manager will permit at most one of the baton objects for a given multithreading unsafe resource to own the baton at a time. The threads associated with the baton objects waiting to own the baton must wait until they receive the baton before they can access the multithreading unsafe resource.