Patents by Inventor Matthew Roy Kilner

Matthew Roy Kilner 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).

  • System and method for optimizing write barrier in garbage collection
    Patent number: 8028008
    Abstract: A system and associated method for optimizing a write barrier in garbage collection. The method marks a bit in a bitmap corresponding to a slot when the slot content is modified to refer to a new object. The method also logs the address of the slot when the object referred by the slot is updated. The method pops the address of the slot to clean from the log and clears the bit corresponding to the slot in the bitmap and when the object referred to by the slot is not already marked, marking said object and pushing its address to the mark stack. When the slot is located within an active object range, the method puts the address of the slot in a deferred log for a later processing.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: September 27, 2011
    Assignee: International Business Machines Corporation
    Inventors: Matthew Roy Kilner, Andrew Dean Wharmby
  • SYSTEM AND METHOD FOR OPTIMIZING WRITE BARRIER IN GARBAGE COLLECTION
    Publication number: 20100082710
    Abstract: A system and associated method for optimizing a write barrier in garbage collection. The method marks a bit in a bitmap corresponding to a slot when the slot content is modified to refer to a new object. The method also logs the address of the slot when the object referred by the slot is updated. The method pops the address of the slot to clean from the log and clears the bit corresponding to the slot in the bitmap and when the object referred to by the slot is not already marked, marking said object and pushing its address to the mark stack. When the slot is located within an active object range, the method puts the address of the slot in a deferred log for a later processing.
    Type: Application
    Filed: September 25, 2008
    Publication date: April 1, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Matthew Roy Kilner, Andrew Dean Wharmby