Re: What is the definition of "thread" in debug?

On Tue, 18 Feb 2003, Jeff Markel wrote:
>
> Anyway, I can't seem to wrap my mind around what is meant by a "thread." The
> AS/400 documentation text for both "thread" and "tbreak" don't seem to
> define it, and the Interactive Source Debugger manual doesn't even have an
> index entry for it. (Under 'T' there are only two entries!)
>

Some programming languages (Java, C, etc) allow programs to have more
than one "thread."   This allows a single program to "multitask", i.e.
have more than one "thread of execution" at the same time.

You know how your computer can run more than one program at a time using
different jobs?  Such as multiple batch jobs running at the same time, or
multiple users at different displays?

Threads are kind-of like that....  except that you'd have these multiple
threads running inside a single program (as opposed to different programs
in different jobs), able to share access to the same resources such as
variables and procedures.

I hope this is making sense, I'm finding it hard to explain... :)

At any rate, RPG does not support threads at this time.  So, if you're an
RPG programmer, you don't have to worry about it.

Threads don't exist in the older-style (OPM) programs.  That's why ISDB
does not have support for them.