[ILUG] [OT] Mac OS-X Kernel

[Twomey_Mark at emc.com]

Yeah,
        Dr Tevanian developed the Mach Kernel. His name appears in the build
logs throughtout the years.
As for the rolls of Mach & BSD

Mach 3.0
Mach 3.0's job is to provide a processor abstraction to the rest of the
computer; to be able to hide the CPU and Memory services from the rest of
the system. Mach will deal with memory protection, and processor scheduling,
scheduling multiple tasks and threads and to provide fundamental access to
the processor environment. Mach is responsible for the preemptive
scheduling, allocating parts of the I/O infrastructure and so forth. Mach is
based highly on messaging; it's a messaging kernel.

BSD 4.4
Provides the system with
File system APIs, Networking APIs & Security Policies

There's lots more but it's way over my head.

Regards,
	 Mark.


> > Actually the kernel is heavily based on NetBSD (FreeBSD runs 
> > primarily on
> 
> no it's heavily based on Mach. Tigran something_or_another, technology
> boss
> at Apple was one of Mach's main developers. :)
> 
> it might borrow from *BSD, but the core is Mach.
> 
>