Common-thread inter-process function calls invoked by jumps to invalid addresses
US6175916A · kind A · utility
46Cited by
5References
62Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1997 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | May 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4484
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention includes a method of making a call from one process to another. The method includes executing a jump instruction from a first process, while specifying an invalid destination address such as an odd virtual memory address. The invalid address causes a memory fault, which in turn results in the invocation of a memory fault handler. The memory fault handler is configured to recognize certain specified invalid addresses, and to call different system functions depending on the particular values of the addresses. The thread of the calling process is used to execute both the fault handler and the called system functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.