Multiprocessor system having a shared memory with exclusive access for a requesting processor which is maintained until normal completion of a process and for retrying the process when not normally completed
US5634037A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1994 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Feb 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An exclusive control system is provided in a system having a memory module and a plurality of processing modules sharing the memory module, each of the plurality of processing modules exclusively accessing the memory module while prohibiting other processing modules from accessing the memory module. The exclusive control system includes a determination unit for determining whether or not a process executed in response to an access request from a processor module among the plurality of processing modules is normally completed in the memory module, and a retry unit for, when the determination unit determines that the process executed in response to the access request is not normally completed, retrying the process while maintaining a state in which other processing modules are prohibited from accessing the memory module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.