Method and apparatus for building an operating environment capable of degree of software fault tolerance
US6769073B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 5, 2000 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Apr 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer system capable of a degree of fault tolerance is disclosed wherein a target software process is split into two instances, an advanced software process and a trailing software process. The advanced process runs ahead of the trailing process. Failure recognizing mechanisms are provided for detecting failure events experienced by the advanced instance of the process. If a failure is detected, fault-finding mechanisms are activated for identifying a position of a fault and attempting to fix the fault that led to the failure within the advanced process. After the advanced process successfully re-processes the previously failing part of its execution, the trailing software process is allowed to advance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.