Apparatus for inter-process/device communication for multiple systems of asynchronous devices
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
Oct 5, 1992
filing date -
Oct 5, 1992
priority date (Note) -
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Abstract
An apparatus for inter-process/inter-device communication in a system of multiple asynchronous devices which uses processing resources efficiently by adhering to an event driven software architecture. An event driven architecture requires that every process have a single blocked input and no blocked outputs, and that all communication between processes take place through a common routing mechanism. The apparatus uses a streams facility, which is commonly used to handle devices, to make processes see the common routing mechanism as a device driver within the streams facility. This common process driver is linked to each real device driver via either a device process set, a polling support service or a half duplex flip-flop, depending upon the nature of the device driver, so as to minimize use of processing resources for communications with real devices.
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