Interdicting I/O and messaging operations from sending central processing complex to other central processing complexes and to I/O device in multi-system complex
US5394554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1992 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Mar 30, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/17
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a multi-system complex having central processing complexes (CPCs) and subsystems, a hardware facility for prompt interdicting I/O and message operations. A CPC or subsystem failure causes as interruption in the availability of the data bases to the attached network of terminals. Often such networks have thousands of terminals. Even a short loss of data is detrimental. Therefore the CPC or subsystem takeover must be accomplished as quickly as possible and the I/O attached to the failing CPC or subsystem must be interdicting to release it for use to the rest of the complex. The disclosed hardware facility provides a mechanism which is program initiated and controlled and which guarantees the prompt completion of the interdiction function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.