Expressing Temporal Behavior Declaratively
The programming language Arctic specifies real-time behavior declaratively by using temporal control constructs and by indicating starting times and durations explicitly, much the way timing is specified in a cue sheet or a musical score. Values in Arctic are functions of time, which may be combined...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.49.6157 http://www.cs.cmu.edu/~rbd/papers/cs25arctic.ps.Z |
| Summary: | The programming language Arctic specifies real-time behavior declaratively by using temporal control constructs and by indicating starting times and durations explicitly, much the way timing is specified in a cue sheet or a musical score. Values in Arctic are functions of time, which may be combined with various arithmetic and logical operators. Since Arctic is a single assignment language, the execution order is implied by data dependencies, simplifying synchronization problems for the programmer. Arctic supports behavioral abstraction, in which a single program module gives rise, through various transformations, to a class of behaviors. An implementation of Arctic is described, and experience with the declarative approach to real-time control is discussed. 1. Introduction For the most part, traditional programming languages have been designed for applications where control over the timing of execution is not a primary concern. Users usually want their programs to run as fast as poss. |
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