[Info-vax] VAX VMS going forward

[David Jones]

On Thursday, July 30, 2020 at 10:26:48 AM UTC-4, Stephen Hoffman wrote:
> There's rather more than the RMS structures that is either 32-bit only, 
> or 64-bit only. Though those are. Some system services are sys$mumble 
> and sys$mumble64, some sniff the arguments, etc. ODS-2 and ODS-5 are 
> 32-bit, too. 

And don't forget your 64-bit app, if large addresses were truly required,  will likely
stumble upon process quota issues as well as _malloc64() eats up all your pagefile
quota.

I tried making an application recognize when it lacked sufficient pagefile quota and
use a heap with a 'private' page file as backing store. Which worked except I couldn't
figure out how to unmap the pages without the OS insisting on first writing them to
to the section file (they were created as DZRO pages).