Patents by Inventor Sivaram Prasad Soma

Sivaram Prasad Soma 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).

  • Persistent memory file store for directly mapped persistent memory database
    Patent number: 11645241
    Abstract: Techniques herein store database blocks (DBBs) in byte-addressable persistent memory (PMEM) and prevent tearing without deadlocking or waiting. In an embodiment, a computer hosts a DBMS. A reader process of the DBMS obtains, without locking and from metadata in PMEM, a first memory address for directly accessing a current version, which is a particular version, of a DBB in PMEM. Concurrently and without locking: a) the reader process reads the particular version of the DBB in PMEM, and b) a writer process of the DBMS replaces, in the metadata in PMEM, the first memory address with a second memory address for directly accessing a new version of the DBB in PMEM. In an embodiment, a computer performs without locking: a) storing, in PMEM, a DBB, b) copying into volatile memory, or reading, an image of the DBB, and c) detecting whether the image of the DBB is torn.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: May 9, 2023
    Assignee: Oracle International Corporation
    Inventors: J. William Lee, William H. Bridge, Jr., Ankur Kemkar, Vipin Gokhale, Sivaram Prasad Soma, Vishvesh Mohanarangam Selvakumaar, Juan R. Loaiza, Wei-Ming Hu, Neil J. S. MacNaughton, Adam Y. Lee
  • PERSISTENT MEMORY FILE STORE FOR DIRECTLY MAPPED PERSISTENT MEMORY DATABASE
    Publication number: 20210081372
    Abstract: Techniques herein store database blocks (DBBs) in byte-addressable persistent memory (PMEM) and prevent tearing without deadlocking or waiting. In an embodiment, a computer hosts a DBMS. A reader process of the DBMS obtains, without locking and from metadata in PMEM, a first memory address for directly accessing a current version, which is a particular version, of a DBB in PMEM. Concurrently and without locking: a) the reader process reads the particular version of the DBB in PMEM, and b) a writer process of the DBMS replaces, in the metadata in PMEM, the first memory address with a second memory address for directly accessing a new version of the DBB in PMEM. In an embodiment, a computer performs without locking: a) storing, in PMEM, a DBB, b) copying into volatile memory, or reading, an image of the DBB, and c) detecting whether the image of the DBB is torn.
    Type: Application
    Filed: March 9, 2020
    Publication date: March 18, 2021
    Inventors: J. William Lee, William H. Bridge, JR., Ankur Kemkar, Vipin Gokhale, Sivaram Prasad Soma, Vishvesh Mohanarangam Selvakumaar, Juan R. Loaiza, Wei-Ming Hu, Neil J.S. MacNaughton, Adam Y. Lee