Re: Teraspace memory allocation

["Leif Svalgaard" <leif@xxxxxxxx>]

If you can obtain an 8-byte address (I think this is what you call
an 8-byte pointer) it is very easy to convert that into a 16-byte
RPG-style (or MI-style) pointer. I'll send you a program (OPM)
to do that it you'll like to try.

From: Walden H. Leverich <WaldenL@TechSoftInc.com>
> Nope, and it looks so damn useful.
> I "appear" to be able to allocate memory using the _C_TS_malloc API but
then
> I'm screwed. If I declare the "pointers" as pointers in RPG then stuff
> doesn't work because pointers in rpg are 16 bytes, but the teraspace stuff
> wants 8 bytes. If I declare the pointers are 8 byte alpha fields I think I
> get a valid allocation, but I can't tell because I can't use the memory
> because I don't have a pointer to it. I found a PASE API that looks to
> convert a teraspace pointer to a space pointer, but the api is very clear
> that this can only be used in PASE programs.
>
> C/C++ Programmers have it easy because you can change the storage model to
> teraspace and all pointers will become 8-byte teraspace pointers. RPG is
> teraspace "Enabled" but there is no way to change the storage model to
> teraspace.
>
> Teraspace looked incredibly cool for two reasons. 1) Memory allocations >
> 16Meg and 2) Pointers can be byte-aligned. I need >16Meg but the byte
> alignment seemed so cool too. In my application I wanted to call a routine
> that allocated the memory and returned the pointer to the caller as a
"magic
> cookie." The caller should never use the contents of the magic cookie it
> should just pass it into other functions in my service program that
> understood how to use it. I can do this with pointers but then I have to
> tell the user of my routines to make sure that the quad-word alignment of
> the pointer is preserved at all times, where byte-alignment has no such
> problems.
>