Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Tue, 03 Feb 1998 10:51:07 -0600

This finally got to the top of my TODO list.

There was a lot of discussion about how to implement this feature.
The main ideas were:

1) Provide a field RTYP in every record.
2) Provide a new Channel Access Request type.

I agree with the second alternative.

Jeff Hill suggested that we have a new request type DBR_CLASS_NAME.
For example:

char        classname[80];

...

SEVCHK(ca_get(DBR_CLASS_NAME,mychid,&classname),"ca_get");
SEVCHK(ca_pend_io(waitTime),"ca_pend_io");
printf("pv: %s classname %s\n",ca_name(mychid),classname);

I modifyied db_access.h, db_access.c, and the ca/convert.c to implement
the change. Jeff will still have to look to see if any other channel
access changes are necessary if new clients talk to old servers.

Marty Kraimer

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System