DYMOS A DYNAMIC MODIFICATION SYSTEM
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DYMOS A DYNAMIC MODIFICATION SYSTEM
DYMOS: A DYNAMIC MODIFICATION SYSTEMbyINSUP LEEA thesis submitted in partial fulfillment of the requirements for the degree ofDOCTOR OF PHILOSOPHY (Co DYMOS A DYNAMIC MODIFICATION SYSTEMomputer Sciences)at theUNIVERSITY OF WISCONSIN • MADISON1983Insup LeeUnder die supervision of Assistant Professor Robert p. CookDYMOS supports a single programmer modifying a module-based program dynamically (that is, wirhour stopping its execution). In DYMOS, rhe programmer modifies and recompiles DYMOS A DYNAMIC MODIFICATION SYSTEMrhe source code of procedures and modules that need ro be replaced, rhe programmer then requests the system to change the current core image ro incorpDYMOS A DYNAMIC MODIFICATION SYSTEM
orate new code and data. New object code is inserted by a dynamic modification process that is executed in parallel with other user processes.TraditioDYMOS: A DYNAMIC MODIFICATION SYSTEMbyINSUP LEEA thesis submitted in partial fulfillment of the requirements for the degree ofDOCTOR OF PHILOSOPHY (Co DYMOS A DYNAMIC MODIFICATION SYSTEMtching. For example, the cunent source code always represents the machine code in execution. In particular, only dianges that will leave the program compiletime correct are allowed. Furthermore, the programmer need not know the details of the machine code generated by a compiler. Finally, it is easi DYMOS A DYNAMIC MODIFICATION SYSTEMer to determine what part of the program to modify.We first describe DYMOS. We then discuss how changes to a running program can be carried out in incDYMOS A DYNAMIC MODIFICATION SYSTEM
remental steps. Finally, we propose an architecture rhar supports rhe synchronization and mirnial exclusion capabilities necessary for dynamic modificDYMOS: A DYNAMIC MODIFICATION SYSTEMbyINSUP LEEA thesis submitted in partial fulfillment of the requirements for the degree ofDOCTOR OF PHILOSOPHY (Co DYMOS A DYNAMIC MODIFICATION SYSTEMice in this work, and for his diligence in reading and improving the early versions of this dissertation.I would also like to thank the other members of my committee: Charles Fischer, James Goodman, Anthony Klug, and Charles Kime, in particular, I would like to thank Charles Fischer, who taught me m DYMOS A DYNAMIC MODIFICATION SYSTEMuch of what 1 know about programming languages and compiler construction and who provided many valuable suggestions in this work, and James Goodman foDYMOS A DYNAMIC MODIFICATION SYSTEM
r proposing improvements to the organization of this thesis.I wish to thank my friends Tae Ho Bark, Sinsup cho, Jin Keon Pai, and Paul Robinson for maDYMOS: A DYNAMIC MODIFICATION SYSTEMbyINSUP LEEA thesis submitted in partial fulfillment of the requirements for the degree ofDOCTOR OF PHILOSOPHY (Co DYMOS A DYNAMIC MODIFICATION SYSTEMenjoyable.Finally, and most importantly, 1 want to thank my parents. Dr. and Mrs. Choo Hyung Lee. and my wife. Klsung, for their endless support and never-fading faithin me.https://khothuvien.cori!TABLE OF CONTENTSChapter 1. INTRODUCTIONI1.1Introduction and Motivation11.2Scope and Goals 31.3Example DYMOS A DYNAMIC MODIFICATION SYSTEMSession41.4Dissertation Plan9Chapter 2. RELATED MRK102.1Introduction102.2A Data Base SystemDYMOS: A DYNAMIC MODIFICATION SYSTEMbyINSUP LEEA thesis submitted in partial fulfillment of the requirements for the degree ofDOCTOR OF PHILOSOPHY (CoDYMOS: A DYNAMIC MODIFICATION SYSTEMbyINSUP LEEA thesis submitted in partial fulfillment of the requirements for the degree ofDOCTOR OF PHILOSOPHY (CoGọi ngay
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