Method and apparatus for allowing restarted programs to use old process identification
US8032887B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2006 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Jul 4, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1438
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system allows processes to be checkpointed and restarted. The system saves the old process and thread identifications in a process table. When an application makes a system call passing the old process and/or thread identifications as parameters, the system performs a mapping algorithm to supply the system call with the new process and/or thread identifications. When a system call returns a new identification, the system performs a remapping algorithm to return the old identifications to the calling application program. When a group of process is restarted for which the process group leader was not checkpointed, the system creates a ghost process group leader.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.