McKown, John wrote:
-----Original Message-----
From: IBM Mainframe Discussion List
[mailto:[EMAIL PROTECTED] On Behalf Of Timothy Sipples
Sent: Monday, February 18, 2008 12:16 AM
To: [email protected]
Subject: Re: Linux zSeries questions
FWIW, there's a fair (and increasing) amount of z/OS written
in C and/or
C++. The SDK for Java immediately leaps to mind as an example.
- - - - -
Timothy Sipples
I think we need to distinush between the "z/OS kernel" and "ancillary
functions" such as Java (or even TCPIP, VTAM, JESn, etc). Now, does
anybody know if C or C++ is used in the "kernal" of z/OS? How about the
OMVS kernel?
I can say without fear of contridiction, but at the same time not
being free to give out details, that some of the "kernel" is written
in C.
Also - you may want to look at z/VM; some of its "kernel" is written
in C too. I believe if you have access to the z/VM source (I'm
not sure if that's still made available) you'll find it.
I also seem to recall an article in the IBM technical journals
about porting C code into z/OS and z/VM; and the efficacy
of code-reuse that provided.
- Dave Rivers -
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