System Support for Online Reconfiguration

Annotation: Implements dynamic interposition and hot-swapping for components in the K42 operating system. In the common case, nothing is interposed; interposers installed dynamically by modifying a call indirection table. Interposition can add wrappers to a component that can take action before and after each call to the component, like a profiler. Interposition also enables hot-swapping: an interposed Mediator blocks new calls to the component, lets the old calls drain, transfers state to the new component, then unblocks the calls. This scheme depends on the fact that requests to a component are short-lived, and this kind of component change is called Read-Copy Update (RCU).

BibTeX entry:

@inproceedings{soules03system,
   author = {Craig A. N. Soules and Jonathan Appavoo and Kevin Hui and
	Robert W. Wisniewski and Dilma Da Silva and Gregory R. Ganger and
	Orran Krieger and Michael Stumm and Marc Auslander and Michal
	Ostrowski and Bryan Rosenburg and Jimi Xenidis},
   title = {System Support for Online Reconfiguration},
   booktitle = {Proc. of the Usenix Technical Conference},
   year = {2003}
}