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Issue No. 05 - May (1991 vol. 24)
ISSN: 0018-9162
pp: 70-78
<p>The design and implementation of a real-time programming language called Flex, which is a derivative of C++, are presented. It is shown how different types of timing requirements might be expressed and enforced in Flex, how they might be fulfilled in a flexible way using different program models, and how the programming environment can help in making binding and scheduling decisions. The timing constraint primitives in Flex are easy to use yet powerful enough to define both independent and relative timing constraints. Program models like imprecise computation and performance polymorphism can carry out flexible real-time programs. In addition, programmers can use a performance measurement tool that produces statistically correct timing models to predict the expected execution time of a program and to help make binding decisions. A real-time programming environment is also presented.</p>

"Building Flexible Real-Time Systems Using the Flex Language," in Computer, vol. 24, no. , pp. 70-78, 1991.
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