A localized condition handling construct for a graphical dataflow language
David D. Langan · 1990
This paper gives a brief description of dataflow programming and of the condition handling constructs used in existing dataflow languages.It is argued that existing mechanisms arc deficient both in terms of flexibility and performance.A construct that provides for increased flexibility and improved performance is presented.The construct described here is called a supervisor and has three component parts called (a) the input acceptance lest, (b) the condition handler and (c) the output acceptance test.The basic dataflow model is expanded to include condition arcs and tokens.The construct presented here is a part of a more comprehensive scheme for condition handling in dataflow models [Langan 88].