Persistence is Hard, Then You Die!
				  or
      Compiler and Runtime Support for a Persistent Common Lisp
				   
				   
			     J. H. Jacobs
			    M. R. Swanson
			    R. R. Kessler
				   
			     UUCS-94-003
				   
		    Department of Computer Science
			  University of Utah
		     Salt Lake City, UT 84112 USA
				   
			   January 26, 1994
				   
			       Abstract
				   
Integrating persistence into an existing programming language
is a serious undertaking.  Preserving the essence of the existing
language, adequately supporting persistence, and maintaining
efficiency require low-level support from the compiler and runtime
systems.  Pervasive, low-level changes were made to a Lisp compiler
and runtime system to introduce persistence.  The result is an
efficient language which is worthy of the name Persistent Lisp.