Method of recovering exclusive control instruction and multi-processor system using the same
US5903763A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Oct 22, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/17
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of recovering an exclusive control instruction in a computer system having a plurality of processor modules and a plurality of shared memory modules which are coupled via a system bus. At least a part of the shared memory modules forms a dual construction. The exclusive control instruction makes access from an arbitrary one of the processor modules to the shared memory modules. First, a read access is performed to a master shared memory module from the arbitrary processor module in response to the exclusive control instruction. Thereafter, a write access is performed to a slave shared memory module, which forms a pair with the master shared memory module from the arbitrary processor module, so as to rewrite data in the slave shared memory module. Finally, a write access is performed to the master shared memory module from the arbitrary processor module, so as to rewrite data in the master shared memory module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.