Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Mon, 14 Jul 1997 15:24:46 -0500

Benjamin Franksen wrote:
> 
> Hello everybody,
> 
> I propose a (minor) change to the next EPICS release. Current problems
> with the new lanGpib driver suggest that an entry in the InitHooks
> function should be made in that calls the driver at some later point
> during IOC init. So far so good. But in our control system there are
> already some standard entries in this InitHooks function. And InitHooks
> only exists once.
> 
> So what one does is to 'ifdef' parts of InitHook depending on what has
> to be called on each IOC. In my point of view this is ugly and
> contradicts the modular design of EPICS which otherwise allows each IOC
> to be configured individually by modifying the startup file while
> keeping the common base functionality consistent.
> 
> Solution: A function
> 
> void registerInitHook(void (*hookFunction)(int))
> 
> callable (multiple times) from the startup file before iocInit. It
> chains together a series of initHook functions.

Note that you can do this without changing base. Just provide a routine:

void initHooks(int callNumber) {localInitHooks(callNumber); }

and let localInitHooks do what you suggest.

Marty Kraimer

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System