Dynamic Program Monitoring and Transformation
      			 Using the OMOS Object Server
				       
		       
  Douglas B. Orr, Robert W. Mecklenburg, Peter J. Hoogenboom, and Jay Lepreau
				       

				  UUCS-92-034
				September, 1992
				       
				       
			Department of Computer Science
			      University of Utah
			 Salt Lake City, UT 84112, USA

				       
				   Abstract

In traditional monolithic operating systems the constraints of working within
the kernel have limited the sophistication of the schemes used to manage
executable program images.  By implementing an executable image loader as a
persistent user-space program, we can extend system program loading
capabilities.  In this paper we present OMOS, an Object/Meta-Object Server
which provides program loading facilities as a special case of generic object
instantiation.  We discuss the architecture of OMOS, the extensible nature of
that architecture, and its application to the problem of dynamic program
monitoring and optimization.  We present several optimization strategies and
the results of applying these strategies.

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To appear in identical form in "Proc. 26th Hawaii International Conference on
System Sciences," January, 1993.