Function to get all of the layout layers in a window

removeListDuplicates((geGetWindowCellView)~>shapes~>layerName)

Better is to use: geGetEditCellView()~>lpps~>layerName - this is more efficient and also includes the layers further down in the hierarchy. Max's approach will look at only the shapes in this cellView. You can filter this to just be those in the cellView by doing: setof(lpp geGetEditCellView()~>lpps lpp~>nShapes>0)~>layerName

This avoids having to traverse every shape in the design.

Andrew

Andrew,

geGetEditCellView()~>lpps is an effient way to get the layers displayed in the window. But if we open a layout cell and only level 0 is displayed in the window, cells in lower levels are not loaded into memory, geGetEditCellView()~>lpps will return only the layers displayed, the layers used by low level cells are not in the return list. By press Shift+F, all levels are displayed, geGetEditCellView()~>lpps will return all the layers used by all hierarchy cells.

Martin

Martin,

You can also just use dbOpenHier(geGetEditCellView() 32) to force all lower cellViews to be loaded into memory without needing to use shift-F to display all layers of hierarchy.

Andrew

Andrew,

Thanks! dbOpenHier(geGetEditCellView() 32) works well. Being picky, there also has a problem that should be improved. If we put the command dbOpenHier() there, it will open hierarchy each time when we run the script, even all cells have been opened. If the layout design is large, it will take a long time to exec dbOpenHier() command. So, can we put a judge there, if all cells are opened, skip dbOpenHier()?

Martin

Martin,

dbOpenHier is pretty quick if everything is already opened. I could imagine that it might take a while if there is a big hierarchy as it will need to revisit everything in the hierarchy to see if there are any cellViews that have not been opened yet (this could happen if a lower level cell was changed - maybe in another session - and refreshed but not opened to full depth). As a result, having a single flag to know that the hierarchy has been opened to full depth is not feasible because it is dependent upon the state of lower level data.

You could of course keep your own flag to determine this for each cellView, but I'm kind of surprised that it is significant unless the design is massive (the decent-sized design example I used takes almost no time to do dbOpenHier - it took 4.4s the first time, and 3ms the second time).

Andrew

Andrew,

Yes, it's a huge design including many different dies on a reticle area.

I put cputime() command before and after dbOpenHier () to calculate the time used. It takes 36.5s the first time, and 7s the second time.

I find another way, hiGetCurrentWindow()->stopLevel = dbGetMaxHierDepth()-1. This is equal to Ctrl-F. This way looks better. The first time it takes 42s, the second time it take 0s.

Martin