RE: power line (AS/400) article in computerworld

The C definition of a pointer is an offset from the beginning of the
storage assigned to the process where the pointer is used. Windows uses
the same definition.

You can't even pass a windows pointer from one process to another without
using operating system API's to map it to universal space.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steve Richter
Sent: Friday, April 11, 2008 12:08 PM
To: Midrange Systems Technical Discussion
Subject: Re: power line (AS/400) article in computerworld

On Fri, Apr 11, 2008 at 12:55 PM, David Gibbs <david@xxxxxxxxxxxx> wrote:

Steve Richter wrote:

you cant use a user space ( which contains pointers ) to store
production data because in the event of disaster recovery the
pointers in that space are invalidated. This falls under the heading
of using the right tool for the job, etc. It is an example where
IBM software group could improve the system, obviate the need for
multiple memory model, but choose not to.

Steve:

The idea is not to store POINTERS in a user space ... but to store
DATA in a user space and get a pointer to it.

why should there be a restriction on storing pointers? If you could create
your own object on the system ( another limitation of the system ), your
code would start with an object header that contains various pointers to
other data structures within the object. That type of a structure is
immediately useable in a program. Much simpler than the alternatives
available today.

-Steve
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