Building an undo log for in-memory blocks of data
US9535853B2 · kind B2 · utility
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Key dates
| Filing date | Dec 30, 2013 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Dec 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are techniques for building an undo log for in-memory blocks of data. Permission on a block of data in memory is set to prevent updates to that block of data using a memory protection function. In response to an update operation attempting to update the block of data in the memory, an interrupt with a location of the block of data is received, the block of data is copied to an undo log entry in an undo log, and the permission on the block of data in the memory is set to allow the update to that block of data to proceed using the memory protection function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.