Logical event notification method and apparatus
US5155842A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1989 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Aug 14, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/542
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for notifying programs that a logical event has occurred on a network, said event being a power failure. Upon the occurrence of a logical event in an operating program, an alert report is generated and stored in a buffer. An alert function call occurs, providing the event type and a pointer to the buffer. The alert function call reads a look-up table listing the programs or users requesting notification of events. The look-up table provides the addresses to which notification should be sent and the type of notification requested. The alert subroutine sends the requested event data from the buffer to the listed addresses. The alert function is completed and the operating program resumes operation. Upon receiving the event report, the receiving program stores it, displays it to a user, generates additional reports, begins controlling network activities, or the like as directed by the receiving program. The invention provides the advantage that each operating program need only perform a universal function call to send event data through the network and then may return to a task. The operating program is not concerned with who receives the report or what action i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.