Steps to making C code thread-safe.
Why do we need threads?
A short (currently non-existent) outline of why we need to add support for threads in the internals of R and also potentially at the user level.
Documentation for S-level functions for threads
These are the help pages for the different functions defining the S4 thread interface.
Design of the S threads

Duncan Temple Lang <duncan@research.bell-labs.com>
Last modified: Tue Feb 20 17:40:23 EST 2001