Enforcing unique cell name in library manager

Hi Ramakrishnan,

I don't really think this is good practice and you have to guarantee that all your available libraries for which you want this behavior are loaded in all your sessions

I guess you could make a pre-checkin trigger using ddRegTrigger

If your cell is new (no previous version checked-in already) you could parse all your libraries and raise an error in case another cell with same name exists already

I believe it can be really slow according to the number of libraries you have and the cells they contain

Hope this can help

Cheers,

Aurel

Ramakrishnan,

I tend to agree with Aurel here. I had in the back of my mind that I'd written something to do this in the past, but when I checked it was specifically to check whether the same lib/cell had been created and checked in another workspace using TDM (an old Cadence-provided design management system; has been end-of-lifed for many years). This could happen because another user could have created the cell and checked it in since the last time the current workspace was updated. So my code (which was written in 1998 - so I have a small excuse at least for not remembering the precise details!) checked specifically for the same library rather than looking across other libraries, and it was also checking in the DM environment - so I don't think it would be very useful for you.

The code used a ddRegTrigger preCreateObj trigger to do the check. That gets called a lot so you definitely would want to be very cautious about making that expensive in checking many libraries - hence my agreeing with Aurel here.

Andrew

Thank you Aurel and Andrew for your inputs. I had not thought about DM in place when this script is policing.

Also while thinking on the same line, we have enabled auto add cellview in our DM and also it reserves the name when a new cell is created. With DM doing its own policing work and can I now look only on my session when creating new cell names?

Do I miss anything?

-Ramakrishnan