bp@cs.brown.edu (Boris Putanec) (05/06/91)
Archive-name: os/research/chorus-reports/1991-05-02
Archive-directory: cse.ogi.edu:/pub/chorus-reports/ [129.95.10.2]
Original-posting-by: bp@cs.brown.edu (Boris Putanec)
Original-subject: Re: OS/2 3.0 and Mach
Reposted-by: emv@msen.com (Edward Vielmetti, MSEN)
In article <91May2.133443edt.8766@orasis.vis.toronto.edu> green@vis.toronto.edu (Anthony Thomas Green) writes:
"...OS/2 3.0's core component is the Executive, a kernel that performs
memory management, process and thread management, and synchronization
between multiple processors.
On top of the Executive is a set of protected subsystems that provide
the necessary services to run a mix of applications, including Windows,
OS/2 and POSIX programs."
OS/2 3.0 is designed to be mostly hardware independent for easy ports to
different machines.
Am I crazy or does this sound exactly like Mach?
Actually, it sounds exactly like Chorus. Protected subsystems
(supervisor actors) is a feature of Chorus used to implement servers
that exist in the system address space. This allows a subsystem to
provide a trap interface to the outside world. Incidentally, Chours
also calls their core component the Executive.
Interestingly enough, OS/2 3.0 seems to lack IPC as a fundamental
service. IPC plays a major role throughout the design and
implementation of both Chorus and Mach. I wonder how Microsoft is
going to do it.
If anyone is interested in getting Chorus information, here is a blurb
from one of their README files,
The following papers/reports describing the Chorus Micro-kernel, its
distributed, multi-server version of Unix (MiX), and a few sundry items,
are available via anonymous FTP from two sites:
For Europe (or if it's closest) from Chorus systemes in France
opera.chorus.fr
192.33.15.3
in directory pub/chorus-reports
For the USA (or if it's closest) from Oregon Graduate Institute
in the USA
cse.ogi.edu
129.95.10.2
in directory pub/chorus-reports
boris
bp@cs.brown.edu
-- comp.archives file verification
cse.ogi.edu
total 1055
-rw-r--r-- 1 214 5493 Mar 21 08:47 index
-rw-r--r-- 1 214 85997 Mar 20 10:58 CS-TR-91-9.ps.Z
-rw-r--r-- 1 214 89135 Mar 20 10:56 CS-TR-91-7.ps.Z
-rw-r--r-- 1 214 71435 Mar 20 10:52 CS-TR-90-52.ps.Z
-rw-r--r-- 1 214 66943 Mar 20 10:50 CS-TR-90-50.ps.Z
-rw-r--r-- 1 214 48549 Mar 20 10:48 CS-TR-90-42.ps.Z
-rw-r--r-- 1 214 136156 Mar 20 10:47 CS-TR-90-25.ps.Z
-rw-r--r-- 1 214 82033 Mar 20 10:43 CS-TR-90-11.ps.Z
-rw-r--r-- 1 214 42662 Mar 20 10:40 CS-TR-89-40.ps.Z
-rw-r--r-- 1 214 19844 Mar 20 10:38 CS-TR-89-36us.ps.Z
-rw-r--r-- 1 214 843 Mar 20 10:38 README
-rw-r--r-- 1 214 90505 Mar 20 10:37 CS-TR-89-36.ps.Z
-rw-r--r-- 1 214 126175 Mar 20 10:35 CS-TR-89-30.ps.Z
-rw-r--r-- 1 214 127819 Mar 20 10:30 CS-TR-89-18.ps.Z
-rw-r--r-- 1 214 23439 Mar 20 10:27 CS-TR-89-10us.ps.Z
-rw-r--r-- 1 214 21470 Mar 20 10:26 CS-TR-89-10.ps.Z
found chorus-reports ok
cse.ogi.edu:/pub/chorus-reports/