Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Wed, 20 Apr 2011 12:17:33 -0500

On Wednesday 20 April 2011 12:02:31 Eric Norum wrote:
> The ioc shell doesn't call its registered functions with individual
>  arguments so the limit you're describing does not exist.  iocsh handler
>  functions are called with a single argument -- a pointer to an array of
>  argument unions.  The only limit that I can see is the amount of memory
>  available to hold this array.

There may be a limit to the length of the command line buffer which would 
restrict the number of arguments, but that probably depends on the underlying 
OS and what the EPICS_READLINE setting is.

Jim may have been remembering the arguments to the vxWorks taskSpawn() 
function, which is limited to 10 arguments.  I'm not aware of a limit in the 
vxWorks shell either, but there may be one that I haven't come across yet.

- Andrew
-- 
An error is only a mistake if you don't learn from it.
When you learn something from it, it becomes a lesson.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System