[Info-vax] VSI roadmap

[Dan Cross]

In article <77fe801a-48fc-4c08-880c-01642ae50349n at googlegroups.com>,
dthi... at gmail.com <dthittner at gmail.com> wrote:
>On Thursday, August 17, 2023 at 7:10:15 PM UTC-4, Arne Vajhøj wrote:
>> On 8/17/2023 11:21 AM, Marc Van Dyck wrote: 
>> > Arne Vajhøj explained : 
>> >> * the CDD replacement 
>> > 
>> > Any details about this ?
>> The roadmap just says: 
>> 
>> <quote> 
>> * VDD (replacement for CDD) 
>> </quote> 
>> 
>> I don't know anything about VDD. 
>> 
>> Maybe some VSI people can enlighten us. 
>> 
>> It could be important for sites still using CDD today. 
>> 
>> I have not used CDD since late 80's/early 90's and 
>> I hated it. 
>
>While CDD made multi-language synchronization of record layouts easier ON
>VMS, it made it difficult when you wanted to move/port code to other
>platforms, which did not have language compiler constructs for accessing
>CDD. We moved part of our application suite to Linux to take advantage of
>some OS features, and needed to extract the record layouts into include
>files for the Linux compilers. From that point on, we found it easier to
>instruct our programmers to keep extracted include file directories in
>synch rather than maintain the VMS-only CDD layouts in combination with
>the include layouts.
>
>I certainly understand that from VSI's compatibility perspective that they
>would want it to prevent a lot of customer code rework by having a CDD
>construct available on x86_64. If VSI is internally creating a new version
>(VDD) it makes me think that Oracle has already said that they aren't
>planning to port CDD to x86_64.

I don't know that that follows.  I can easily understand why a
company might want to reduce dependence on something controlled
by another company.

	- Dan C.