Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Thu, 18 Mar 1999 08:35:13 -0600

Till Straumann wrote:
> 
> One of our programmers consulted me because his device support module
> deadlocked the database (i.e. one or two of the scanning tasks). This happened
> 
> when his module read a field using dbGetField().

Record/Device support is not allowed to call dbGetField or dbPutField.
record/device support uses dbGetLink, dbPutLink instead.
Reading Chapter 2 of the Application Developers guide should explain what
happened.
If you really understand Chapter 2, you will see that for certain VERY rare
situations it is permissible for record/device support to call dbGet/dbPut but
you better think very hard before doing this.

Marty Kraimer

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System