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delete existing wire from a terminal and redraw a new one.

AdeshNamekumar

I'm trying to redraw all nets on the bulk terminal of all instances by deleting exisiting nets after extracting information about the net label name from them. I have the working SKILL to redraw the nets at the bulk terminal but I'm having trouble deleting the existing nets. 

if cvSch stores the cellView id. 
This is what my snippet looks like:

BulkSignals = "x y z"
BulkSignals = parseString(BulkSignals)

foreach(biasinst cvSch~>instances

; loop through all the terminals of each instance
foreach(myTerm biasinst~>instTerms
if( ( myTerm~>name == "B" ) then
biasnet = myTerm~>net~>name

if((setof(x BulkSignals (x == myTerm~>net~>name)) != nil) then
foreach(fig myTerm~>net~>figs
if(((setof(x BulkSignals (x == fig~>net~>name) ) != nil) && fig~>children != nil) then

schDelete(fig)

function call to draw the new net
)));all loops end here

The problem in using and deleting "figs" is that it has all instances of the same net name rather than just the one specific to the instance I'm presently looking at. As a result, I'm deleting 'n' number of wires at once instead of just one,

I did find a work around by including the fig~>children condition to but now I see warnings as follows:
dbGetq: object is a purged/freed object - db:0x158bb9c4

Is there an easier way I can do this? I've seen a couple of related posts but can you be more specific?


Thank you,
Adesh

Parents

  • Hi Lawrence,

    The end goal is to redraw the wires on the bulk terminal in a different manner, hence setting the net wont help I think. I will have to extract information, delete and then redraw. 

    I tried using the dbGetOverlaps() , thanks for letting me know about it. But since the instTerm's are not always in the same order, its a pain having to find out the terminal order and then access the bulk terminal. Having done that, I'm still having to access the figs attribute since line is not a layer/property it says.

    I'm trying to modify the algorithm with what I have from the dbGetOverlaps() but still looking for a easier way to access and modify the wires instance by instance. 

    Thanks

Reply

  • Hi Lawrence,

    The end goal is to redraw the wires on the bulk terminal in a different manner, hence setting the net wont help I think. I will have to extract information, delete and then redraw. 

    I tried using the dbGetOverlaps() , thanks for letting me know about it. But since the instTerm's are not always in the same order, its a pain having to find out the terminal order and then access the bulk terminal. Having done that, I'm still having to access the figs attribute since line is not a layer/property it says.

    I'm trying to modify the algorithm with what I have from the dbGetOverlaps() but still looking for a easier way to access and modify the wires instance by instance. 

    Thanks

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