LISP and Symbolic Computation, 3(1)39-65
Moped (A Portable Debugger)Mohammad Pourheidari, Hewlett Packard, Mail Stop 47LH, 19447 Pruneridge Ave., Cupertino, CA 95014
Robert R. Kessler, Department of Computer Science, 3190 MEB, University of Utah, Salt Lake City, UT 84112
Harold Carr, Department of Computer Science, 3190 MEB, University of Utah, Salt Lake City, UT 84112
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Abstract: Moped is a portable debugger that uses enhanced
tracing facilities and backtracing to discover unusual or undesirable
program behaviors. It is based upon two modules--Program Probes and
Program History. Program Probes is a forward tracing utility which
allows Moped to dynamically examine the execution of a
program. Program History is a backtracing utility which allows Moped
to study the executed section of a program. Together, Program Probes
and Program History enable Moped to have more control over the
behavior of a program than either one of them, and consequently to
provide an easier path toward program debugging. Moped is written in
Common LISP with no dependencies on details of the machine
implementation. Therefore, it is easily portable to any Common LISP
environment.
Keywords: debugging, tracing, backtracing, Lisp, probe, use-definition analysis, macro, variable binding, dynamic redefinition |
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