Kelly Obrien Green

US Patent:

55948898, Jan 14, 1997

Filed:

May 30, 1995

Appl. No.:

8/451836

Inventors:

William K. Colgate - Kirkland WA
Kelly C. Green - Woodinville WA

Assignee:

Digital Equipment Corporation - Maynard MA

International Classification:

G06F 1202

US Classification:

39549702

Abstract:

A memory resource allocation look ahead system is implemented in event logger (14), operating in conjunction with one or more event sinks (18). When the event logger (14) is called, all information in the argument fist is copied into an event buffer maintained by the logger (14), and the buffer is placed at the input end of queue (44). The event sinks 18 contain a similar queue. In operation of the event logger 14, an evd. sub. -- get. sub. -- event routine is used to obtain event reports from the event queue (44). The evd. sub. -- get. sub. -- event routine includes a next. sub. -- size. sub. -- hint argument, giving the size of the event record that will be obtained with the next call to evd. sub. -- get. sub. -- event. The next. sub. -- size. sub. -- hint argument is used to allocate memory for the next call to evd. sub. -- get. sub. -- event.

US Patent:

52376621, Aug 17, 1993

Filed:

Jun 27, 1991

Appl. No.:

7/722097

Inventors:

Kelly C. Green - Woodinville WA
Steven M. Jenness - Redmond WA
Terry L. Carruthers - Bothell WA

Assignee:

Digital Equipment Corporation - Maynard MA

International Classification:

G06F 1300

US Classification:

395275

Abstract:

In a data processing system a structure (50) called an I/O association is constructed. An I/O association (50) is a symmetric structure which allows not only consumer (52) of a service to locate the provider (54) of the service, but it also permits the converse. In some respects, an I/O channel (32) is only half of an association (50). The association (50) describes a targeted object (56) and provides the means (57) of locating the necessary procedures to operate on the target (56). The association (50) also describes a source object (58) that is held responsible for the requested operation, as well as the means (60) of locating and invoking procedures to report results to the source object (58).