RE: threading in rpg. was RPG and Web.. (was Using OO conceptsinRPG)

["Steve Richter" <srichter@xxxxxxxxxxxxx>]

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Barbara Morris
Sent: Tuesday, May 20, 2003 2:47 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: threading in rpg. was RPG and Web.. (was Using OO
conceptsinRPG)

>But it's not as simple as putting a mutex around each access to a global
>structure.  The global static structures are interrelated, so each RPG
>procedure would pretty much be a critical section.

Your right Barbara, thanks.

As of V5R2, with IO direct into a data struct, procs dont have to use any
global variables.  And if files are opened and accessed using some sort of a
handle, then file I/O could be thread safe.

Interestingly, a lot of the changes that would make an rpg proc threadsafe,
like no global mapping of fields thru a data struct, file opens that are
local to a proc and passed with a handle from proc to proc, would make the
code more modular and less error prone.

-Steve