OS X (was: what was VMS/OpenVMS written in?) - test-drb@ccmp.vtda.org

2 Dec 2010

On 12/01/10 23:55, Richard<legalize at xmission.com> wrote:

...
  In article<alpine.DEB.2.00.1012011116190.24432 at
slate.spiritone.com>,
      "Zane H. Healy"<healyzh at aracnet.com>  writes:

  >  On Wed, 1 Dec 2010, Richard wrote:
 >
> >  >  Since it has a BSD kernel underneath, I'm guessing that all of the
OS
> >  >  proper is written in C and that all the Apple stuff on top is written
> >  >  in Objective-Cish.
 >
 >  It does not have a BSD kernel underneath.  It uses the Mach Microkernel.
 >  It has a BSD layer on top of that.  Sorry, my mistake.  I knew there was BSD
in there somewhere.  Still, I
 doubt the Mach stuff is written in Objective-C, although I believe it
 originally came from NeXT, so who knows. 
Well, technically, OS X is neither Mach, nor BSD. But a mix of both. See 
http://en.wikipedia.org/wiki/XNU for more details. But I'd consider it 
closer to BSD than Mach myself. There is not really much of the 
microkernel left in there...

	Johnny