Re: Trying to get the size of a Datastructure through the pointer? Possible? Not having good luck with it...

I didn't think it was possible, but couldn't hurt asking :)


Thanks
Bryce Martin
Programmer/Analyst I
570-546-4777



Rory Hewitt <rory.hewitt@xxxxxxxxx>
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
11/19/2010 12:02 PM
Please respond to
RPG programming on the IBM i / System i <rpg400-l@xxxxxxxxxxxx>


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Re: Trying to get the size of a Datastructure through the pointer?
Possible? Not having good luck with it...






Bryce,

Quick answer is no, you can't.

It *may* be possible to determine how much memory the system allocated for
a
basing pointer using an MI instruction, but that allocated memory would
always be in increments of 16 bytes (at a minimum), so even if you could
get
that value, all you'd really be able to figure out is that your
data-structure is no larger than that size.

Rory

On Fri, Nov 19, 2010 at 8:17 AM, Bryce Martin <BMartin@xxxxxxxxxxxx>
wrote:

I won't go into a lot of details behind this, I have a very specific
question....

The following DataStructure
D MasterList_T...
D DS qualified based(TEMPLATE)
D Line...
D 3s 0
D Item...
D 15a
D Quantity...
D 11s 3
D LeadTimeDate...
D 8s 0

When I do a %size(MasterList_T) I get 37 bytes. When I do

%size(TEMPLATE)

I get 16. Makes sense, its how big the memory address is. No problem.

My

question, is it possible to get the size of MasterList_T from its basing
pointer? Is there a bif or something that will let me get it?

Thanks
Bryce Martin
Programmer/Analyst I
570-546-4777