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          University of California at Santa Cruz
Baskin Center for Computer Engineering and Information Sciences 

The following technical report is available electronically or as
a paper copy.  Instructions for getting either follow the abstract.

UCSC-CRL-92-28   (available electronically as ucsc-crl-92-28.ps.Z)
PRECOMPILING C++ FOR GARBAGE COLLECTION
Daniel R. Edelson
June 1992, 19 pages (paper copy $5.00)
Abstract:  
Our research is concerned with compiler-independent, efficient and
convenient garbage collection for C++.  Most collectors proposed for
C++ have either been implemented in a library or in a compiler.  As
an intermediate step between those two, this paper proposes using
precompilation techniques to augment a C++ source program with code
to allow mostly type-accurate garbage collection.  There are two key
precompiler transformations.  The first is automatic generation of
*smart pointer* classes.  The precompiler defines the smart
pointer classes and the user utilizes them instead of raw pointers.
These smart pointers supply functionality that allows the collector to
locate the root set for collection.  The second transformation
augments the C++ program with code that allows the garbage collector
to locate internal pointers within objects.  This paper describes the
precompiler and the garbage collector. The paper includes a brief
(1500 word) survey of related techniques.

This technical report is available electronically through either 
of the following methods:
1.  through anonymous ftp from ftp.cse.ucsc.edu, in /pub/tr. Log in 
    as "anonymous", use your email address as your password, specify 
    "binary" before getting the file.  Uncompress before printing.
2.  by mail to automatic mail server rnalib@ftp.cse.ucsc.edu.
    Put this command on the subject line or in the body of the message:
	@@ send ucsc-crl-92-28.ps.Z from tr
    To get the index or abstract list:
	@@ send INDEX from tr
	@@ send ABSTRACTS.1992 from tr
    To get the list of the tr directory:
	@@ list tr
    To get the list of commands and their syntax:
	@@ help commands

Order paper copies from:  Technical Library, Baskin Center for Computer 
Engineering & Information Sciences, UCSC, Santa Cruz  CA  95064.
Purchase orders are not accepted.  Checks or money orders must be
for U.S. dollars, payable through a U.S. bank, and made out to 
"UC Regents".

Questions:  jean@cse.ucsc.edu

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