Detecting a repeating execution time sequence in a virtual machine
US9250945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2012 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Jun 23, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45562
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A generation identifier is provided having a value established upon generating a new virtual machine configuration context or a snapshot of a virtual machine configuration context. The generation identifier is configured to be sampled in order to indicate whether the sampled generation is a latest generation. To use the generation identifier, a service or application persists the generation identifier upon resuming or initiating operation. During normal operation or replay, the persisted generation identifier is compared to the generation identifier sampled from a location associated with the virtual machine configuration context on which the service or application is being run before performing a requested process or committing to a transaction. When the sampled generation identifier is different than the persisted generation identifier, the service or application knows that it is running a time-shifted operation such as from a snapshot replay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.