Programming real-time executives in higher order languageMethods by which real-time executive programs can be implemented in a higher order language are discussed, using HAL/S and Path Pascal languages as program examples. Techniques are presented by which noncyclic tasks can readily be incorporated into the executive system. Situations are shown where the executive system can fail to meet its task scheduling and yet be able to recover either by rephasing the clock or stacking the information for later processing. The concept of deadline processing is shown to enable more effective mixing of time and information synchronized systems.
Document ID
19820062074
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Foudriat, E. C. (NASA Langley Research Center Hampton, VA, United States)