Give a Process to your Drivers!

The CHORUS  architecture is designed to support a new generation of open and distributed operating systems. A microkernel provides generic services allowing servers that cooperate within subsystems to offer standard interfaces: a UNIX SVR3.2 interface is available and a UNIX SVR4 interface is under development. The CHORUS microkernel provides services to manipulate actors and threads (memory management, scheduling... ). It also offers a distributed Inter-Process Communication (IPC) facility and services to dynamically connect user provided functions to hardware interrupts and traps. CHORUS/MiX V.3.2 is implemented as a set of the following servers: a Process Manager, a File Manager, a Terminal Manager and a Socket Manager (to provide BSD sockets). In addition to standard UNIX services (which have been transparently extended to distribution), one can also use CHORUS services to take advantage of CHORUS real-time features and multi-threaded processes.