System and method for using virtual memory for redirecting auxilliary memory operations
AssigneeMicrosoft Corporation
InventorJeffrey Noyle
Life of this patent
Estimating the term…
Abstract
A method for using virtual memory for redirecting auxiliary memory operations redirects the auxiliary memory write operations of a process to a buffer after capturing the state of the auxiliary memory at various times during the method in three buffers. After the write operations have ended, the auxiliary memory is reconstructed into one of the buffers by comparing the contents of the buffers to each other. The reconstructed memory is then available when the process next regains control of the auxiliary memory.
Claims22
A method for redirecting and reconstructing writing operations directed to a portion of a memory from a process running in a computer, where said portion comprises some or all of said memory, said method comprising:
- storing a pre-redirection copy of said portion of said memory in a pre-redirection buffer and a redirection copy of the contents of said portion of said memory in a redirection buffer;
- redirecting writing operations to write data to said redirection buffer;
- storing a post-redirection copy of the contents of said portion of said memory in a post-redirection buffer after said step of redirecting writing operations;
- and
- reconstructing said portion of said memory using said pre-redirection buffer, said redirection buffer, and said post-redirection buffer.
(canceled)
8-12. (canceled)
A system for redirecting and reconstructing writing operations directed to a portion of a memory from a process running in a computer system, where said portion comprises some or all of said memory, said system comprising:
- a storage module that stores a pre-redirection buffer, a redirection buffer, and a post-redirection buffer;
- a redirection module that, sequentially, stores a copy of the contents of said portion of said memory in said pre-redirection buffer and said redirection buffer, redirects said writing operations to said redirection buffer, and stores a copy of the contents of said portion of said memory in post-redirection buffer;
- and
- a reconstruction module that reconstructs said portion of said memory using said pre-redirection buffer, said redirection buffer, and said post-redirection buffer.
(canceled)
A computer-readable medium adapted for use in redirecting and reconstructing writing operations directed to a portion of memory from a process running in a computer, where said portion comprises some or all of said memory, said computer-readable medium having stored thereon one or more data structures comprising:
- a pre-redirection buffer that receives a copy of said portion of memory before redirection of said writing operations occurs;
- a post-redirection buffer that receives a copy of said portion of memory after redirection of said writing operations occurs;
- and
- a redirection buffer that receives a copy of said portion of memory before redirection of said writing operations occurs, to which writing operations are redirected, and in which reconstruction of said portion of said memory occurs.
Dependencies are inferred from the claim text.