Design and Implementation of a Threads Library Janche Sang

The purpose of the Xthreads library is to provide a cheap concurrent programming environment. The design of Xthreads library is patterned after Xinu, a small and elegant operating system developed at Purdue University. The processes in the Xinu operating system share a single address space and hence enjoy reduced overheads in process creation, interprocess communication, etc. Qur approach is to map the Xinu process strudure into the Xthreads thread structure in a Unix-like process. This report describes the design and implementation issues of the Xthreacls library on the nCUBE2, iPSC860 and RS6000 machines and some early performance measurements of the system on these machines