Overview

This paper describes a multiprocessor operating system simulator that was developed by the authors in the Fall semester of 1987. The simulator was built in response to the need to provide students with an environment in which to build and test operating system concepts as part of the coursework of a third-year undergraduate operating systems course. Written in C++, the simulator uses the co-routine style task package that is distributed with the AT&T C++ Translator to provide a hierarchy of classes that represents a broad range of operating system software and hardware components. The class hierarchy closely follows that of the 'Choices' family of operating systems for loosely- and tightly-coupled multiprocessors. During an operating system course, these classes are refined and specialized by students in homework assignments to facilitate experimentation with different aspects of operating system design and policy decisions. The current implementation runs on the IBM RT PC under 4.3bsd UNIX. Johnston, Gary M. and Campbell, Roy H. Langley Research Center NASA/CR-88-206198, NAS 1.26:206198, UIUCDCS-R-88-1460, UILU-ENG-88-1766, TTR-88-5 NsG-1471; NSF CCR-88-09479; CISE-1-5-30035; AT&T IL SOFT. 1-5-37388...

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