 Chambers also is a member of the <a href="http://www.cs.washington.edu/research/projects/spin/www">SPIN Project</a>.  SPIN is an extensible operating system microkernel which supports dynamic adaptation of system interfaces and implementations under direct application control while still maintaining system integrity and isolating applications.  SPIN utilizes a dialect of the Modula-3 language as a pointer-safe kernel extension language.  SPIN also relies on <a href="http://www.cs.washington.edu/research/projects/unisw/DynComp/www">dynamic compilation</a> to achieve high performance despite its fine-grained extensibility.  <P>
