Resource sharing between real-time and general purpose programs

Details Resource sharing between real-time and general purpose programs Resource sharing between real-time and general purpose programs

1997-11-21

1999-10-26

Toplu, Lucien U.

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

Least weight routing

709102, 709104, G06F 900

Patent

active

059744391

ABSTRACT:
The present invention provides a method, system, and program product for sharing resources between real-time and non-real-time (or general purpose) programs in a computer system which utilizes Slotted Priority Architecture. Non-pre-emptable, internally triggered resources are shared using the method of the present invention. The real-time scheduler anticipates upcoming realtime minor cycles and, using knowledge of which resources are to be used by the next scheduled real-time task and of the latency times of the resources to be used, signals the device drivers for the resources to be used to stop accepting requests from general purpose tasks far enough in advance to the beginning of the real-time minor cycles that will utilize them to ensure that the resources will be idle and available for the real-time tasks to use without delay.

REFERENCES:
patent: 5528513 (1996-06-01), Vaitzblit et al.
patent: 5748468 (1998-05-01), Notenboom et al.
IBM Technical Disclosure Bulletin, No. 5, Oct. 1992, pp. 8-10 "Extended Micro Channel for Realtime Multimedia Applications", New York.

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