hierarchical list of instances in a given layout

Given what you are trying to do is not very precisely defined (you didn't say exactly what you want the result to look like or what you're trying to do with it), I'll suggest an answer that may or may not be appropriate. You can use the "fastTree" command from the UNIX prompt (or Tools->Print Hierarchy Tree in the CIW).

If you want to do something else, please be clearer in explaining what you want.

Kindest Regards,

Andrew.

Hi Andrew,

I am working on a script to list the subcells in a library which is not used in any of the top cells we have .
So, i get a list of all the subcells in a given library and comparing that list in the main cell
I am using the command


foreach(cellS layout_names
instSearch = leSearchHierarchy(cell cell~>bBox 32 "inst" list(list("cell name" "==" cellS)))


if(instSearch == nil then
arrraySearch = leSearchHierarchy(cell cell~>bBox 32 "array" list(list("cell name" "==" cellS)))

if(arrraySearch == nil then
unUsedCells = append1(unUsedCells cellS)

);end if
);end if
);end foreach

But for a libray with 2 or 3 cells the time taken to list the unused subcells is less , but for a lib with more than 50 top cells and 100's of subcells it is taking lot of time.
just because i do leSearchHierarchy every time . For the schematic view search i have used list =schGetCellViewListInSearchScope(cell "hierarchy" cell "schematic" "" "read" ) and it is very fast.
so, i just wanted to check if there is anything i can do to reduce the time taken to search. If i dump the list of instances used in top cell to a file the search becomes very easy.

Let me know if i am correct.

Regards
vinutha

Hi Vinutha,
Try,
lePrintHierarchyTree()

Best Regards,
Marbs

In this script i need only the cellnames to be added to a list , so that i do remd(list 1 list2)

You could use this function to collect the cells used in a hierarchy:

procedure(CCFcellsUsed(cv @optional (cellsUsed makeTable('cellsUsed nil)))
  let((realMaster)
    foreach(master cv~>instanceMasters
      realMaster=if(master~>superMaster master~>superMaster master)
      when(realMaster && !cellsUsed[realMaster]
        cellsUsed[realMaster]=t
        CCFcellsUsed(realMaster cellsUsed)
      )
    )
  )
  cellsUsed
)

Then something like:

cellNamesUsed=makeTable('cellNamesUsed nil)
foreach(cell CCFcellsUsed(topCellView)
  cellNamesUsed[cell~>cellName]=t
)

unusedCells=setof(cellName layout_names !cellNamesUsed[cellName])

This will be much more efficient because you are only traversing the hierarchy once to collect what was used.

Regards,

Andrew.

Thanks a lot.