Patents by Inventor Steven J. Greenspan
Steven J. Greenspan 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).
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Patent number: 8028279Abstract: A system for porting code from a native platform to a non-native platform is provided which utilizes a non-native, platform-specific layer of code and a platform-neutral layer of code. The platform-neutral layer substantially emulates the native platform of ported code and provides a platform-neutral interface to the ported code. Together, the platform-specific layer and the platform-neutral layer provide an execution environment in which the ported code operates as a kernel extension of the non-native platform. The platform-neutral layer of the execution environment is portable to other non-native platforms so that code can be ported to another non-native platform by replacing the platform-specific layer with a customized platform-specific layer, which is adapted to the other non-native platform.Type: GrantFiled: February 8, 2008Date of Patent: September 27, 2011Assignee: International Business Machines CorporationInventors: Roger E. Bonsteel, Juliet C. Candee, John L. Czukkermann, David B. Emmes, Steven J. Greenspan, Joshua W. Knight, III, Alan M. Webb
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Patent number: 7979851Abstract: A system and program product for facilitating computing-environment control of a resource to be accessed by existing program code is provided which includes transparently replacing an uncontrolled resource referenced by existing program code with a resource controlled by a computing environment. The protocol also includes transparently interposing at least one resource management service of the computing environment between the existing program code and the resource controlled by the computing environment, wherein the at least one resource management service provides computing-environment control of the resource to be accessed by the existing program code. The replacing of the uncontrolled resource prevents the existing program code from directly accessing the resource.Type: GrantFiled: July 28, 2009Date of Patent: July 12, 2011Assignee: International Business Machines CorporationInventors: Roger E. Bonsteel, Juliet C. Candee, John L. Czukkermann, David B. Emmes, Steven J. Greenspan, Joshua W. Knight, Alan M. Webb
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Publication number: 20090282387Abstract: A system and program product for facilitating computing-environment control of a resource to be accessed by existing program code is provided which includes transparently replacing an uncontrolled resource referenced by existing program code with a resource controlled by a computing environment. The protocol also includes transparently interposing at least one resource management service of the computing environment between the existing program code and the resource controlled by the computing environment, wherein the at least one resource management service provides computing-environment control of the resource to be accessed by the existing program code. The replacing of the uncontrolled resource prevents the existing program code from directly accessing the resource.Type: ApplicationFiled: July 28, 2009Publication date: November 12, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Roger E. BONSTEEL, Juliet C. CANDEE, John L. CZUKKERMANN, David B. EMMES, Steven J. GREENSPAN, Joshua W. KNIGHT, Alan M. WEBB
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Patent number: 7584459Abstract: A method of facilitating computing-environment control of a resource to be accessed by existing program code is provided which includes transparently replacing an uncontrolled resource referenced by existing program code with a resource controlled by a computing environment. The method also includes transparently interposing at least one resource management service of the computing environment between the existing program code and the resource controlled by the computing environment, wherein the at least one resource management service provides computing-environment control of the resource to be accessed by the existing program code. The replacing of the uncontrolled resource prevents the existing program code from directly accessing the resource.Type: GrantFiled: January 14, 2005Date of Patent: September 1, 2009Assignee: International Business Machines CorporationInventors: Roger E. Bonsteel, Juilet C. Candee, John L. Czukkermann, David B. Emmes, Steven J. Greenspan, Joshua W. Knight, Alan M. Webb
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Publication number: 20080155516Abstract: A system for porting code from a native platform to a non-native platform is provided which utilizes a non-native, platform-specific layer of code and a platform-neutral layer of code. The platform-neutral layer substantially emulates the native platform of ported code and provides a platform-neutral interface to the ported code. Together, the platform-specific layer and the platform-neutral layer provide an execution environment in which the ported code operates as a kernel extension of the non-native platform. The platform-neutral layer of the execution environment is portable to other non-native platforms so that code can be ported to another non-native platform by replacing the platform-specific layer with a customized platform-specific layer, which is adapted to the other non-native platform.Type: ApplicationFiled: February 8, 2008Publication date: June 26, 2008Applicant: INTERNATIONAL BUSINESS MACHINE CORPORATIONInventors: Roger E. BONSTEEL, Juliet C. CANDEE, John L. CZUKKERMANN, David B. EMMES, Steven J. GREENSPAN, Joshua W. Knight, Alan M. WEBB
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Patent number: 7356808Abstract: A method of porting code from a native platform to a non-native platform is provided which utilizes a non-native, platform-specific layer of code and a platform-neutral layer of code. The platform-neutral layer substantially emulates the native platform of ported code and provides a platform-neutral interface to the ported code. Together, the platform-specific layer and the platform-neutral layer provide an execution environment in which the ported code operates as a kernel extension of the non-native platform. The platform-neutral layer of the execution environment is portable to other non-native platforms so that code can be ported to another non-native platform by replacing the platform-specific layer with a customized platform-specific layer, which is adapted to the other non-native platform.Type: GrantFiled: September 23, 2004Date of Patent: April 8, 2008Assignee: International Business Machines CorporationInventors: Roger E. Bonsteel, Juliet C. Candee, John L. Czukkermann, David B. Emmes, Steven J. Greenspan, Joshua W. Knight, III, Alan M. Webb
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Patent number: 6976255Abstract: A secured subspace facility is provided for ensuring isolated storage for transactions running under an operating system main task. Isolation is achieved by attaching, from an operating system task, subtasks that will restrict application addressing. The attaching includes defining a subspace address environment as home space within a dispatchable unit access list (DU-AL) associated with each attached subtask. Multiple subtasks can be attached with each subtask running applications in an isolated address subspace, notwithstanding execution of the applications in address register addressing mode.Type: GrantFiled: March 28, 2000Date of Patent: December 13, 2005Assignee: International Business Machines CorporationInventors: Carl E. Clark, Steven J. Greenspan
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Patent number: 6915515Abstract: An exemplary embodiment of the invention is a method for providing a path-sensitive branch registry for cyclic distributed transactions. This method requires that a superior node's transaction manager (TM) identify itself as the root followed by sending the syncpoint cue to at least one subordinate node. Before sending the syncpoint cues to the subordinate the superior links the inbound messages with its specific branch qualifier (BQUAL) as well as a global transaction identifier (GTRID). The TM of each subordinate node receives syncpoint cues and is responsible for knowing who its superior is. In addition, the TM is responsible for recognizing the flow of branch instructions and guarantee that it uses a network-wide unique value for the branch values it generates for a given global transaction. With the recognition of the flow from the superior node the subordinate TM updates the node registry as to the inbound and outbound flow of branch messages by its superior and its subordinates.Type: GrantFiled: December 21, 2000Date of Patent: July 5, 2005Assignee: International Business Machines CorporationInventors: Stephen J. Kinder, Steven J. Greenspan
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Patent number: 6799172Abstract: An exemplary embodiment of the present invention is a method for affinity free restart of a resource manager in a multi-system environment. The method begins when a restart request is received from a first resource manager on a first system in the multi-system environment. The first resource manager is associated with an incomplete transaction. Next, a distributed transaction unit of recovery structure is built for the incomplete transaction. Then, the distributed transaction unit of recovery structure is sent to a transaction manager for restart processing. The restart process includes restarting the first resource manager on the first system. The restart process also includes restarting a second resource manager on a second system in the multi-system environment if the incomplete transaction is associated with the second resource manager.Type: GrantFiled: August 28, 2001Date of Patent: September 28, 2004Assignee: International Business Machines CorporationInventors: Juliet C. Candee, Steven J. Greenspan, Ricky L. Kready
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Publication number: 20030046258Abstract: An exemplary embodiment of the present invention is a method for affinity free restart of a resource manager in a multi-system environment. The method begins when a restart request is received from a first resource manager on a first system in the multi-system environment. The first resource manager is associated with an incomplete transaction. Next, a distributed transaction unit of recovery structure is built for the incomplete transaction. Then, the distributed transaction unit of recovery structure is sent to a transaction manager for restart processing. The restart process includes restarting the first resource manager on the first system. The restart process also includes restarting a second resource manager on a second system in the multi-system environment if the incomplete transaction is associated with the second resource manager.Type: ApplicationFiled: August 28, 2001Publication date: March 6, 2003Applicant: International Business Machines CorporationInventors: Juliet C. Candee, Steven J. Greenspan, Ricky L. Kready
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Patent number: 6490595Abstract: Syncpoint processing is performed for a distributed transaction. The distributed transaction includes a plurality of units of recovery, and syncpoint processing is performed for at least a portion of the units of recovery, without passing messages between the units of recovery of the at least a portion of the plurality of units of recovery. Instead, syncpoint processing (including transactional logging) is controlled by one syncpoint manager associated with one of the units of recovery, and that unit of recovery collects information representative of the other units of recovery.Type: GrantFiled: March 30, 2000Date of Patent: December 3, 2002Assignee: International Business Machines CorporationInventors: Juliet C. Candee, Steven J. Greenspan
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Publication number: 20020083115Abstract: An exemplary embodiment of the invention is a method for providing a path-sensitive branch registry for cyclic distributed transactions. This method requires that a superior node's transaction manager (TM) identify itself as the root followed by sending the syncpoint cue to at least one subordinate node. Before sending the syncpoint cues to the subordinate the superior links the inbound messages with its specific branch qualifier (BQUAL) as well as a global transaction identifier (GTRID). The TM of each subordinate node receives syncpoint cues and is responsible for knowing who its superior is. In addition, the TM is responsible for recognizing the flow of branch instructions and guarantee that it uses a network-wide unique value for the branch values it generates for a given global transaction. With the recognition of the flow from the superior node the subordinate TM updates the node registry as to the inbound and outbound flow of branch messages by its superior and its subordinates.Type: ApplicationFiled: December 21, 2000Publication date: June 27, 2002Applicant: International Business Machines CorporationInventors: Stephen J. Kinder, Steven J. Greenspan
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Patent number: 6339771Abstract: A system and method for processing a request utilizing a database management system in a computer system is disclosed. The database management system manages at least one database. At least one database subsystem corresponding to the database management system is available. The computer system includes a plurality of worker threads. The method and system include assigning the request to a worker thread of the plurality of worker threads. The worker thread is for aiding in execution of the request. The method and system also include providing a connection to a particular database subsystem for the worker thread and associating the connection with the worker thread if the worker thread has not previously used the particular database subsystem. The method and system further include reusing the connection to the particular database subsystem that is associated with the worker thread if the worker thread has previously used the particular database subsystem.Type: GrantFiled: July 7, 2000Date of Patent: January 15, 2002Assignee: International Business Machines CorporationInventors: Melvin Richard Zimowski, Jeffrey David Aman, Steven J. Greenspan, Patrick Michael LiVecchi
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Patent number: 6112196Abstract: A system and method for processing a request utilizing a database management system in a computer system is disclosed. The database management system manages at least one database. At least one database subsystem corresponding to the database management system is available. The computer system includes a plurality of worker threads. The method and system include assigning the request to a worker thread of the plurality of worker threads. The worker thread is for aiding in execution of the request. The method and system also include providing a connection to a particular database subsystem for the worker thread and associating the connection with the worker thread if the worker thread has not previously used the particular database subsystem. The method and system further include reusing the connection to the particular database subsystem that is associated with the worker thread if the worker thread has previously used the particular database subsystem.Type: GrantFiled: June 25, 1998Date of Patent: August 29, 2000Assignee: International Business Machines CorporationInventors: Melvin Richard Zimowski, Jeffrey David Aman, Steven J. Greenspan, Patrick Michael LiVecchi