Experimental Physics and
Industrial Control System

Learned Friends:

I have a softIOC with a shared-resource problem. 

A couple dozen 'sub' records need access to the same file.

I would like to put a mutex around the file access, but I'm stumped as to where the corresoponding variable should be defined.

It seems to me that it has to go one level "up" from the subroutine. 

So my question is:  Where to park the '->lock' ?

Thanks in advance for your help.

Cheers -Mathias

Mathias Steiner

Michigan State University