Patents by Inventor Andrew Dunshea

Andrew Dunshea 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).

  • Publication number: 20130232502
    Abstract: A computer implemented method, data processing system, and computer program product for configuring a partition with needed system resources to enable an application to run and process in a secure environment. Upon receiving a command to create a short lived secure partition for a secure application, a short lived secure partition is created in the data processing system. This short lived secure partition is inaccessible by superusers or other applications. System resources comprising physical resources and virtual allocations of the physical resources are allocated to the short lived secure partition. Hardware and software components needed to run the secure application are loaded into the short lived secure partition.
    Type: Application
    Filed: April 15, 2013
    Publication date: September 5, 2013
    Applicant: International Business Machines Corporation
    Inventors: Jos M. Accapadi, Andrew Dunshea, Lynne M. Weber, Linda A. Zimmer
  • Patent number: 8447955
    Abstract: A multiprocessor data processing system (MDPS) with a weakly-ordered architecture providing processing logic for substantially eliminating issuing sync instructions after every store instruction of a well-behaved application. Instructions of a well-behaved application are translated and executed by a weakly-ordered processor. The processing logic includes a lock address tracking utility (LATU), which provides an algorithm and a table of lock addresses, within which each lock address is stored when the lock is acquired by the weakly-ordered processor. When a store instruction is encountered in the instruction stream, the LATU compares the target address of the store instruction against the table of lock addresses. If the target address matches one of the lock addresses, indicating that the store instruction is the corresponding unlock instruction (or lock release instruction), a sync instruction is issued ahead of the store operation.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: May 21, 2013
    Assignee: International Business Machines Corporation
    Inventors: Andrew Dunshea, Satya Prakash Sharma, Mysore Sathyanarayana Srinivas
  • Patent number: 8424078
    Abstract: A computer implemented methods data processing system, and computer program product for configuring a partition with needed system resources to enable an application to run and process in a secure environment. Upon receiving a command to create a short lived secure partition for a secure application, a short lived secure partition is created in the data processing system. This short lived secure partition is inaccessible by superusers or other applications. System resources comprising physical resources and virtual allocations of the physical resources are allocated to the short lived secure partition. Hardware and software components needed to run the secure application are loaded into the short lived secure partition.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: April 16, 2013
    Assignee: International Business Machines Corporation
    Inventors: Jos Manuel Accapadi, Andrew Dunshea, Lynne Marie Weber, Linda Ann Zimmer
  • Patent number: 8422370
    Abstract: A mechanism is provided to determine an average rate of duplicate packets per connection for packets received by a node over an interface. The mechanism selects a connection from the connections established over the interface, determines that a rate of duplicate packets for the selected connection exceeds the average rate of duplicate packets by a threshold percentage, and sends a message to a transmitter of the duplicate packets over the connection to increase a timeout interval to retransmit packets.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: April 16, 2013
    Assignee: International Business Machines Corporation
    Inventors: Jos M. Accapadi, Andrew Dunshea, Gary L. Nevling
  • Patent number: 8417903
    Abstract: Disclosed is a computer implemented method, computer program product, and apparatus for maintaining a preselect list. The method comprises software components detecting a page fault of a memory page. In response to detecting a page fault, the software components determine whether the memory page is referenced in the preselect list and unhide the memory page. Upon determining whether the memory page is referenced in the preselect list, the software components remove an entry of the preselect list corresponding to the memory page to form at least one removed candidate page and skip paging-out of the at least one removed candidate page.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 9, 2013
    Assignee: International Business Machines Corporation
    Inventors: Abraham Alvarez, Andrew Dunshea, Douglas J. Griffith
  • Patent number: 8412907
    Abstract: A method of allocating resources in a data processing system is disclosed. The method includes an application designing a page reallocation scheme and sending said page reallocation scheme from said application to a kernel service that is responsible for allocation of storage locations.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: April 2, 2013
    Assignee: Google Inc.
    Inventors: Andrew Dunshea, Diane Garza Flemming
  • Publication number: 20120324483
    Abstract: A service module that provides for discovery of one or more network interfaces connecting a prospective remote procedure call (RPC) client, facilitates the provision of RPC programs in a network including multi-horned systems. When a request for a network address to an RPC application providing an RPC program is received from the RPC client, the RPC bind daemon discovers from the module, using the client response address, over which interface(s) the client is accessible. The daemon then selects an address of a network path to the RPC application that the prospective client can access and returns the corresponding network address. The service module monitors the network stack for RPC get address requests and builds tables of client address entries with corresponding network interface identifiers. The entries are retired according to an aging policy.
    Type: Application
    Filed: August 13, 2012
    Publication date: December 20, 2012
    Applicant: International Business Machines Corporation
    Inventors: Adekunle Bello, Andrew Dunshea, Nikhil Hegde, Paul H. Hernandez, Aruna Yedavilli
  • Publication number: 20120260257
    Abstract: A computer program product for scheduling threads in a multiprocessor computer comprises computer program instructions configured to select a thread in a ready queue to be dispatched to a processor and determine whether an interrupt mask flag is set in a thread control block associated with the thread. If the interrupt mask flag is set in the thread control block associated with the thread, the computer program instructions are configured to select a processor, set a current processor priority register of the selected processor to least favored, and dispatch the thread from the ready queue to the selected processor.
    Type: Application
    Filed: June 20, 2012
    Publication date: October 11, 2012
    Applicant: International Business Machines Corporation
    Inventors: Jos Manuel Accapadi, Mathew Accapadi, Andrew Dunshea, Mark Elliott Hack, Agustin Mena, III, Mysore Sathyanarayana Srinivas
  • Patent number: 8266639
    Abstract: A service module that provides for discovery of one or more network interfaces connecting a prospective remote procedure call (RPC) client, facilitates the provision of RPC programs in a network including multi-horned systems. When a request for a network address to an RPC application providing an RPC program is received from the RPC client, the RPC bind daemon discovers from the module, using the client response address, over which interface(s) the client is accessible. The daemon then selects an address of a network path to the RPC application that the prospective client can access and returns the corresponding network address. The service module monitors the network stack for RPC get address requests and builds tables of client address entries with corresponding network interface identifiers. The entries are retired according to an aging policy.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: September 11, 2012
    Assignee: International Business Machines Corporation
    Inventors: Adekunle Bello, Andrew Dunshea, Nikhil Hegde, Paul H. Hernandez, Aruna Yedavilli
  • Patent number: 8261279
    Abstract: An approach is provided that reserves a software lock for a waiting thread is presented. When a software lock is released by a first thread, a second thread that is waiting for the same resource controlled by the software lock is woken up. In addition, a reservation to the software lock is established for the second thread. After the reservation is established, if the lock is available and requested by a thread other than the second thread, the requesting thread is denied, added to the wait queue, and put to sleep. In addition, the reservation is cleared. After the reservation has been cleared, the lock will be granted to the next thread to request the lock.
    Type: Grant
    Filed: March 15, 2008
    Date of Patent: September 4, 2012
    Assignee: International Business Machines Corporation
    Inventors: Jos Manuel Accapadi, Matthew Accapadi, Andrew Dunshea, Dirk Michel
  • Patent number: 8230430
    Abstract: Methods, systems, and computer program products are provided for scheduling threads in a multiprocessor computer. Embodiments include selecting a thread in a ready queue to be dispatched to a processor and determining whether an interrupt mask flag is set in a thread control block associated with the thread. If the interrupt mask flag is set in the thread control block associated with the thread, embodiments typically include selecting a processor, setting a current processor priority register of the selected processor to least favored, and dispatching the thread from the ready queue to the selected processor. In some embodiments, setting the current processor priority register of the selected processor to least favored is carried out by storing a value associated with the highest interrupt priority in the current processor priority register.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 24, 2012
    Assignee: International Business Machines Corporation
    Inventors: Jos M. Accapadi, Matthew Accapadi, Andrew Dunshea, Mark E. Hack, Agustin Mena, Mysore S. Srinivas
  • Patent number: 8214609
    Abstract: Some embodiments comprise a method for selecting data to be transferred to a storage space of virtual memory and include identifying a set of data and determining subsets. Determining subsets may allow for delays before transferring the subsets and allow access to memory of the subsets during the delays. Accesses during the delays may enable embodiments to select other data to be transferred to the storage space and prevent transference of the accessed data. Other embodiments comprise apparatuses that have a paging space, a page identifier, and a page transferrer to transfer pages to the paging space after a delay. The delay may prevent a number of pages from being transferred to the paging space, such as for pages that were accessed during the delay.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: July 3, 2012
    Assignee: International Business Machines Corporation
    Inventors: Shashidhar Bomma, Andrew Dunshea, Douglas J. Griffith, Jean-Philippe Sugarbroad
  • Patent number: 8145870
    Abstract: The present invention provides an improved method, system, and computer program product that can optimize cache utilization. In one embodiment, a kernel service creates a storage map, and sending said storage map to an application. In one embodiment of the present invention, the step of the kernel service creating the storage map may further comprise the kernel service creating a cache map. In one embodiment of the present invention, the step of the kernel service creating the storage map may further comprise the kernel service creating an indication of one or more storage locations that have been allocated to store information for the application. In one embodiment of the present invention, the step of the kernel service creating the storage map may further comprise the kernel service creating the storage map in response to receiving a request for the storage map from the application.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: March 27, 2012
    Assignee: International Business Machines Corporation
    Inventors: Andrew Dunshea, Diane Garza Flemming
  • Patent number: 8132178
    Abstract: A system and method is provided for delaying a priority boost of an execution thread. When a thread prepares to enter a critical section of code, such as when the thread utilizes a shared system resource, a user mode accessible data area is updated indicating that the thread is in a critical section and, if the kernel receives a preemption event, the priority boost that the thread should receive. If the kernel receives a preemption event before the thread finishes the critical section, the kernel applies the priority boost on behalf of the thread. Often, the thread will finish the critical section without having to have its priority actually boosted. If the thread does receive an actual priority boost then, after the critical section is finished, the kernel resets the thread's priority to a normal level.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: March 6, 2012
    Assignee: International Business Machines Corporation
    Inventors: Jos Manuel Accapadi, Andrew Dunshea, Dirk Michel, James W. Van Fleet
  • Patent number: 8042115
    Abstract: A system for balancing component load. In response to receiving a request, data is updated to reflect a current number of pending requests. In response to analyzing the updated data, it is determined whether throttling is necessary. In response to determining that throttling is not necessary, a corresponding request to the received request is created and a flag is set in the corresponding request. Then, the corresponding request is sent to one of a plurality of lower level components of an input/output stack of an operating system for processing based on the analyzed data to balance component load in the input/output stack of the operating system.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: October 18, 2011
    Assignee: International Business Machines Corporation
    Inventors: Andrew Dunshea, Stephen Alfred Haley, Brian W. Hart, Anil Kalavakolanu
  • Patent number: 8037203
    Abstract: Methods, systems, and products are disclosed for user defined preferred DNS routing that include mapping for a user in a data communications application a domain name of a network host to a network address for a preferred DNS server, wherein the preferred DNS server has a network address for the domain name; receiving from the user a request for access to a resource accessible through the network host; and routing to the preferred DNS server a DNS request for the network address of the network host, the DNS request including the domain name of the network host. In typical embodiments, mapping a domain name to a network address for a preferred DNS server is carried out by storing, through the data communication application, the domain name in association with the network address for a preferred DNS server in a data structure in computer memory.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: October 11, 2011
    Assignee: International Business Machines Corporation
    Inventors: Jos Manuel Accapadi, Mathew Accapadi, William Lee Britton, Andrew Dunshea, Dirk Michel
  • Patent number: 7962913
    Abstract: Methods, systems, and computer program products are provided for scheduling threads in a multiprocessor computer. Embodiments include selecting a thread in a ready queue to be dispatched to a processor and determining whether an interrupt mask flag is set in a thread control block associated with the thread. If the interrupt mask flag is set in the thread control block associated with the thread, embodiments typically include selecting a processor, setting a current processor priority register of the selected processor to least favored, and dispatching the thread from the ready queue to the selected processor. In some embodiments, setting the current processor priority register of the selected processor to least favored is carried out by storing a value associated with the highest interrupt priority in the current processor priority register.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: June 14, 2011
    Assignee: International Business Machines Corporation
    Inventors: Jos Manuel Accapadi, Mathew Accapadi, Andrew Dunshea, Mark Elliott Hack, Agustin Mena, III, Mysore Sathyanarayana Srinivas
  • Publication number: 20110138404
    Abstract: A service module that provides for discovery of one or more network interfaces connecting a prospective remote procedure call (RPC) client, facilitates the provision of RPC programs in a network including multi-horned systems. When a request for a network address to an RPC application providing an RPC program is received from the RPC client, the RPC bind daemon discovers from the module, using the client response address, over which interface(s) the client is accessible. The daemon then selects an address of a network path to the RPC application that the prospective client can access and returns the corresponding network address. The service module monitors the network stack for RPC get address requests and builds tables of client address entries with corresponding network interface identifiers. The entries are retired according to an aging policy.
    Type: Application
    Filed: December 4, 2009
    Publication date: June 9, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Adekunle Bello, Andrew Dunshea, Nikhil Hegde, Paul H. Hernandez, Aruna Yedavilli
  • Publication number: 20110087857
    Abstract: Functionality can be implemented in a virtual memory manager (VMM) to allow small pages (e.g., 4 KB) to be coalesced into large pages (e.g., 64 KB), so that a single free list can be maintained for the large pages (“maintained pages”). When a process requests a small page, the VMM can associate a maintained page with a memory segment accessible by the process. Then, the maintained page can be divided to form a set of small pages (“fragments”). The fragments can become available pages in a broken page list. The VMM can satisfy the request by allocating one of the fragments in the broken page list. If the process requests additional small pages, the additional requests can be satisfied from the broken page list. When the process terminates, the fragments in the broken page list become a maintained page and can be returned to the free list.
    Type: Application
    Filed: October 14, 2009
    Publication date: April 14, 2011
    Applicant: International Busines Machines Corporation
    Inventors: Shashidhar Bomma, Andrew Dunshea
  • Patent number: 7912913
    Abstract: A method, system, and program for facilitating presentation and monitoring of electronic mail messages with reply by constraints are provided. Within a network environment, a server receives electronic mail messages with separate selected reply by dates, wherein each electronic mail message is addressed for delivery by the server to at least one particular recipient. The server enables, for display within a user interface accessible to the particular recipient, a separate record for each electronic mail message within an inbox. The inbox include at least one selectable sublevel, wherein upon selection of the particular selectable sublevel of the inbox, only a selection of records for electronic mail messages with a same reply by date as the selectable sublevel are displayed within the user interface.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: March 22, 2011
    Assignee: International Business Machines Corporation
    Inventors: Jos M. Accapadi, Andrew Dunshea