System for performing asynchronous file operations requested by runnable threads by processing completion messages with different queue thread and checking for completion by runnable threads
US5758184A · kind A · utility
140Cited by
9References
23Claims
0Family size
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Key dates
| Filing date | Apr 24, 1995 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Apr 24, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for performing multiple simultaneous asynchronous input/output operations in a computer operating system. An input/output completion port object is created and associated with a file descriptor. When I/O services are requested on the file descriptor, completion is indicated by a message queued to the I/O completion port. A process requesting I/O services is not notified of completion of the I/O services, but instead checks the I/O completion port's queue to determine the status of its I/O requests. The I/O completion port manages multiple threads and their concurrency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.