Re: Question about service programs

[Adam Glauser <adamglauser@xxxxxxxxxxxx>]

> On 31/07/2008, at 10:42 PM, Adam Glauser wrote:
>
> > [L]ets suppose we have PGM0,
> > consisting of modules MOD_0 and MOD_UTIL.  We also have PGM1, consisting
> > of MOD_1 and MOD_UTIL.
> >
> > If I now run PGM0 which calls PGM1, wouldn't there essentially be two
> > copies of the code for MOD_UTIL in memory?

Simon Coulter wrote:
> In that case there are two copies of the same code because you have 
> "bound by copy" but there are also two different programs loaded. You'll 
> have the same effect if you bind a module into a service program and 
> also into a program object.
[...]
> However, that's not what he asked. He said "50 people using the same 
> interactive program that weighs 40MB". That is one program used by 50 
> users. In that case only one copy of the program code no matter who 
> loaded it first nor whether the users are running in different main 
> storage pools.

I realize that I deviated from the OP's question.  I certainly wasn't 
trying to gainsay your response.  It seemed that considering a case 
related to the OP's question might help him better understand the 
concepts at play, and it has certainly helped me to clarify my 
understanding of things.