Recovery routine masking and barriers to support phased recovery development
US7783920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2007 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Jul 10, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0793
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, computer program product, and data processing system for providing optional exception recovery features in operating system kernel code are disclosed. In a preferred embodiment, a segment of mainline code may designate a recovery routine for that segment by calling a kernel service provided for that purpose. The kernel service pushes the address of the designated recovery routine, context, and re-entry point information corresponding to the segment to a recovery stack. An additional “footprint” region is also allocated on the recovery stack and used to store other state information needed for recovery. A mask value or barrier count value is also stored on the recovery stack to allow recovery to be disabled for non-recoverable routines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.