Patents by Inventor Maoni Z. Stephens
Maoni Z. Stephens 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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Publication number: 20240078114Abstract: Providing memory prefetch instructions with completion notifications in processor-based devices is disclosed. In this regard, an instruction set architecture (ISA) of a processor-based device provides a memory prefetch instruction that, when executed by a processor of a processor-based device, causes the processor to perform a memory prefetch operation by asynchronously retrieving a memory block from the system memory based on the memory address, and storing the memory block in a cache memory of the processor-based device. In response to completing the memory prefetch operation, the processor then notifies an executing software process that the memory prefetch operation is complete. Based on the notification, the executing software process may ensure that any subsequent memory access requests are not attempted until the memory prefetch operation is complete.Type: ApplicationFiled: September 7, 2022Publication date: March 7, 2024Inventors: Thomas Philip SPEIER, Maoni Z. STEPHENS
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Patent number: 10334031Abstract: Efforts to avoid time-outs during execution of an application in a managed execution environment may be implemented by monitoring memory allocation.Type: GrantFiled: July 3, 2012Date of Patent: June 25, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Maoni Z. Stephens, Patrick H. Dussud
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Patent number: 8701095Abstract: Based on a requested allocation of a managed object, a native memory required with the managed object is determined. A portion of native memory is allocated and a portion of managed memory is allocated based on requirements of the managed object. A memory management strategy is implemented based on the allocation of native memory and unmanaged memory. For example, the memory management strategy can comprise garbage collection of first managed objects that have only managed heap associated therewith is performed before garbage collection of second managed objects that have both managed heap and native memory associated therewith.Type: GrantFiled: July 25, 2005Date of Patent: April 15, 2014Assignee: Microsoft CorporationInventor: Maoni Z Stephens
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Publication number: 20120278813Abstract: Efforts to avoid time-outs during execution of an application in a managed execution environment may be implemented by monitoring memory allocation.Type: ApplicationFiled: July 3, 2012Publication date: November 1, 2012Applicant: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud
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Patent number: 8234378Abstract: A method and system for managing applications in a managed execution environment is disclosed. Prior to performing a garbage collection the magnitude of the garbage collection or the allocated memory is compared to a threshold value. If the threshold value is exceeded at least a portion of an application currently executing in the environment is redistributed prior to the garbage collection occurring.Type: GrantFiled: October 20, 2005Date of Patent: July 31, 2012Assignee: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud
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Patent number: 7987215Abstract: Adding references to objects to a mark stack. A limited number of references to objects referenced by an object with a large number of object references are added to the stack. An object is accessed. A determination is made that references in the object should be added to a mark stack using a reference in the mark stack to the object in conjunction with a pointer. The pointer is used to track which references in the object have been placed on the mark stack. A reference to the object on the mark stack is accessed. A pointer is initialized. A reference to another object referenced by the object is pushed onto the mark stack. The pointer is incremented. It is then determined that that more references should be pushed to the mark stack. Acts of pushing references onto the mark stack and incrementing the pointer are repeated.Type: GrantFiled: April 22, 2008Date of Patent: July 26, 2011Assignee: Microsoft CorporationInventors: Patrick H. Dussud, Maoni Z. Stephens
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Patent number: 7926071Abstract: Interfaces are provided to notify of conditions pertaining to memory management. Thus, efforts to avoid time-outs during execution of code in a managed execution environment may be implemented.Type: GrantFiled: October 20, 2005Date of Patent: April 12, 2011Assignee: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud
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Patent number: 7860906Abstract: Per-segment overflow ranges. One method includes acts for handling overflows of a mark stack. A reference to an object is accessed. The object is processed by attempting to place references to other objects referenced in the object onto a mark stack. An overflow condition of the mark stack is detected. A range in a segment is defined which includes the object that caused the overflow condition. The range is assigned on a per segment basis such that the range is defined to only include addresses in a single segment.Type: GrantFiled: May 28, 2008Date of Patent: December 28, 2010Assignee: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud
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Publication number: 20100318584Abstract: Techniques are described herein for managing access to a distributed cache during garbage collection. When garbage collection is to be performed with respect to a node, the node may send a request to a data manager requesting to have an instance of data module(s) included in the node that are in a primary state placed in a secondary state. The data manager may change the state of the data module(s) to the secondary state. The data manager may change the state of another instance of the data module(s) that is included in another node to the primary state. When the garbage collection is complete with respect to the node, the node may send another request to the data manager requesting that the data module(s) that were placed in the secondary state be returned to the primary state. The data manager may return those data module(s) to the primary state.Type: ApplicationFiled: June 13, 2009Publication date: December 16, 2010Applicant: Microsoft CorporationInventors: Muralidhar Krishnaprasad, Maoni Z. Stephens, Lu Xun, Anil K. Nori
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Patent number: 7831640Abstract: Mark stack overflow list. A method may be practiced in a computing environment including application code that implements garbage collection functionality. The garbage collection functionality includes pushing object references onto a mark stack, such that objects referenced on the mark stack can be marked so as to prevent memory for the objects from being recycled for use with other objects instances. The method includes acts for handling overflows of a mark stack. The method includes accessing a reference to an object. The object is processed by attempting to enumerate references to other objects from the object onto a mark stack. An overflow condition of the mark stack is detected for a referenced other object. A reference to the referenced other object is placed on an overflow list. References from the overflow list are processed.Type: GrantFiled: April 15, 2008Date of Patent: November 9, 2010Assignee: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud
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Patent number: 7801872Abstract: Publishing an object. Memory for an object may be reserved so as to lock the memory from being access by garbage collection threads or other user threads. While the lock is in place, type and size information can be installed for the object. If the reservation is being made to allow garbage collection threads to operate on the object, then the type may be a specialized type that indicates that the object has no references. Reservations can also be made to allow the intended type information to be installed for the object. An indication can be made that the object is well formed, thus unlocking the object and allowing garbage collection threads, other user threads, or both to access the object. The locking and unlocking may be performed by accessing an API provided by a system garbage collector.Type: GrantFiled: April 8, 2008Date of Patent: September 21, 2010Assignee: Microsoft CorporationInventors: Patrick H. Dussud, Maoni Z. Stephens
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Patent number: 7774389Abstract: Various technologies and techniques are disclosed for providing optimized garbage collection. A garbage collector is provided for managing a garbage collection process. An optimized garbage collection feature is provided that allows the garbage collection process to be suggested. When the optimized garbage collection feature is invoked at a particular moment, the system determines if collection is appropriate at the particular moment. If collection is determined to be appropriate at the particular moment, then the system performs the garbage collection process. If collection is determined to not be appropriate at the particular moment, then the system delays garbage collection until an appropriate time. A low latency mode can be used to automatically ensure that the garbage collection process starts sooner than it would in a normal mode. The latency mode in use can be changed at different points in time during the garbage collection process.Type: GrantFiled: January 17, 2007Date of Patent: August 10, 2010Assignee: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud, Peter F. Sollich, Claudio Caldato
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Publication number: 20090300085Abstract: Per-segment overflow ranges. One method includes acts for handling overflows of a mark stack. A reference to an object is accessed. The object is processed by attempting to place references to other objects referenced in the object onto a mark stack. An overflow condition of the mark stack is detected. A range in a segment is defined which includes the object that caused the overflow condition. The range is assigned on a per segment basis such that the range is defined to only include addresses in a single segment.Type: ApplicationFiled: May 28, 2008Publication date: December 3, 2009Applicant: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud
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Publication number: 20090265402Abstract: Adding references to objects to a mark stack. A limited number of references to objects referenced by an object with a large number of object references are added to the stack. An object is accessed. A determination is made that references in the object should be added to a mark stack using a reference in the mark stack to the object in conjunction with a pointer. The pointer is used to track which references in the object have been placed on the mark stack. A reference to the object on the mark stack is accessed. A pointer is initialized. A reference to another object referenced by the object is pushed onto the mark stack. The pointer is incremented. It is then determined that that more references should be pushed to the mark stack. Acts of pushing references onto the mark stack and incrementing the pointer are repeated.Type: ApplicationFiled: April 22, 2008Publication date: October 22, 2009Applicant: Microsoft CorporationInventors: Patrick H. Dussud, Maoni Z. Stephens
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Publication number: 20090259702Abstract: Mark stack overflow list. A method may be practiced in a computing environment including application code that implements garbage collection functionality. The garbage collection functionality includes pushing object references onto a mark stack, such that objects referenced on the mark stack can be marked so as to prevent memory for the objects from being recycled for use with other objects instances. The method includes acts for handling overflows of a mark stack. The method includes accessing a reference to an object. The object is processed by attempting to enumerate references to other objects from the object onto a mark stack. An overflow condition of the mark stack is detected for a referenced other object. A reference to the referenced other object is placed on an overflow list. References from the overflow list are processed.Type: ApplicationFiled: April 15, 2008Publication date: October 15, 2009Applicant: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud
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Publication number: 20090254596Abstract: Publishing an object. Memory for an object may be reserved so as to lock the memory from being access by garbage collection threads or other user threads. While the lock is in place, type and size information can be installed for the object. If the reservation is being made to allow garbage collection threads to operate on the object, then the type may be a specialized type that indicates that the object has no references. Reservations can also be made to allow the intended type information to be installed for the object. An indication can be made that the object is well formed, thus unlocking the object and allowing garbage collection threads, other user threads, or both to access the object. The locking and unlocking may be performed by accessing an API provided by a system garbage collector.Type: ApplicationFiled: April 8, 2008Publication date: October 8, 2009Applicant: Microsoft CorporationInventors: Patrick H. Dussud, Maoni Z. Stephens
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Patent number: 7441094Abstract: Memory management within a runtime execution environment may be configured in accordance with data associated with executable code loaded therein.Type: GrantFiled: July 5, 2005Date of Patent: October 21, 2008Assignee: Microsoft CorporationInventor: Maoni Z. Stephens
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Publication number: 20080172431Abstract: Various technologies and techniques are disclosed for providing optimized garbage collection. A garbage collector is provided for managing a garbage collection process. An optimized garbage collection feature is provided that allows the garbage collection process to be suggested. When the optimized garbage collection feature is invoked at a particular moment, the system determines if collection is appropriate at the particular moment. If collection is determined to be appropriate at the particular moment, then the system performs the garbage collection process. If collection is determined to not be appropriate at the particular moment, then the system delays garbage collection until an appropriate time. A low latency mode can be used to automatically ensure that the garbage collection process starts sooner than it would in a normal mode. The latency mode in use can be changed at different points in time during the garbage collection process.Type: ApplicationFiled: January 17, 2007Publication date: July 17, 2008Applicant: Microsoft CorporationInventors: Maoni Z. Stephens, Patrick H. Dussud, Peter F. Sollich, Claudio Caldato