Method using semaphores for synchronizing communication between programs or processes resident in a computer system
US5313638A · kind A · utility
44Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Mar 24, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A communication method suitable for use between programs operating at different privilege levels in a processor utilizes shared memory which includes a plurality of memory slots for containing messages to be exchanged and message queue. The synchronization of the programs and access to the shared memory is controlled a number of semaphores. Each slot is provided with its own semaphore ana three additional semaphores are provided to synchronize operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.