Providing external interrupt serialization compatibility in a multiprocessing environment for software written to run in a uniprocessor environment
US5560018A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Dec 16, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus provide external interrupt serialization compatibility for a multiprocessing environment so that software written to run in a uniprocessor environment can run without degradation caused by inadequate or improper handling. When a processor receives an external interrupt, the interrupt manager will acquire an external interrupt spinlock. Once acquired, the interrupt manager will transfer control to the external interrupt service routine and upon return from that routine, the interrupt manager will release the external interrupt spinlock. Also, protection of processor execution state in a multiprocessor environment is provided using the same spinlock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.