Process synchronization utilizing semaphores
US4395757A · kind A · utility
183Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1981 |
| Grant date | Jul 26, 1983 |
| Priority date | — |
| Expiry date | Apr 14, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information structure called a semaphore serves as a signalling mechanism in process synchronization. The semaphore is used to relate a process and an event which do not appear simultaneously. In accomplishing this, the semaphore is capable of storing the presence of events or resources waiting for processes or, alternatively, the presence of processes waiting for events or resources via a queue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.