Patents by Inventor Stephen Flavell

Stephen Flavell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for performing memory leak analysis inside a virtual machine
    Patent number: 8032568
    Abstract: A method, system, computer program product, and computer program storage device for performing a memory leak analysis inside a virtual machine is disclosed. By utilizing thread stack(s), class statics, and/or a list of root objects, a DFS algorithm starts execution at root objects in the thread stack(s), class statics, and/or a list of root objects. Upon fully processing an object, a reachability (sum of sizes of all child objects plus a size of the object itself) of the object is calculated. When the reachability of the object is larger than a threshold and when all reachabilities of children of the objects are less than another threshold (i.e., a largest child reachability of the object is less than another threshold), the object is determined as a potential source of a memory leak.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: October 4, 2011
    Assignee: International Business Machines Corporation
    Inventors: Joseph K. Chacko, Stephen Flavell, Hedley Proctor
  • METHOD FOR PERFORMING MEMORY LEAK ANALYSIS INSIDE A VIRTUAL MACHINE
    Publication number: 20090327373
    Abstract: A method, system, computer program product, and computer program storage device for performing a memory leak analysis inside a virtual machine is disclosed. By utilizing thread stack(s), class statics, and/or a list of root objects, a DFS algorithm starts execution at root objects in the thread stack(s), class statics, and/or a list of root objects. Upon fully processing an object, a reachability (sum of sizes of all child objects plus a size of the object itself) of the object is calculated. When the reachability of the object is larger than a threshold and when all reachabilities of children of the objects are less than another threshold (i.e., a largest child reachability of the object is less than another threshold), the object is determined as a potential source of a memory leak.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Joseph K. Chacko, Stephen Flavell, Hedley Proctor