Multiprocessor system having mutual exclusion control function
US4621318A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1983 |
| Grant date | Nov 4, 1986 |
| Priority date | — |
| Expiry date | Feb 1, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2209/521
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multiprocessor system includes a plurality of processors which are respectively connected to a memory device and each of which produces a first control signal when executing a test-and-set instruction and a second control signal after executing a sequence of queuing steps. The multiprocessor system further has flip-flop circuits each of which is set in response to the first control signal from the corresponding one of the processors and which are commonly reset in response to a secnd control signal from any one of the processors. The processors are prevented from executing the test-and-set instruction while the corresponding one of the flip-flop circuits is set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.