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Problem updating OutputStringField

climbnc

The following code is assigned to a button i have in a GUI.  When i hit the button i have print statements along the way to tell me when it is generating, when it finishes, and if there were any errors.  I have get() functions along with them to update the outputStringField in my gui to give me the same information.  the only problem is that it only outputs when it is finished or when there was an error, not when it is running.

Could someone take a look and please tell me why the get functions are not functioning like i expect, that is like the printf functions?

I even tried putting the "Generating GDS" get function into a procedure and adding it in front of the wavGenGds() callback and I get the same results.

There is something simple i am missing but cannot figure out what it is.

Thank you very much in advance for your help.

Thanks,

Chris

 

procedure( wavGenGds( @optional (cv getEditRep()) (strmOutRunDir "./CALIBRE/GDS") )

prog( (bin_strmout,libname,cellname,viewname,strmout_str)

bin_strmout="/cad/tools/cadence/ic616_isr14/bin/strmout>/dev/null"

if( cv~>cellViewType != "maskLayout" then
printf("Expecting maskLayout view type !\n")
return(nil)
)

libname= cv~>libName
cellname= cv~>cellName
viewname=cv~>viewName
tf = ciGetTechFile()
techFileName = tf~>libName

if( cv~>modifiedButNotSaved then
printf("%s %s has been modified, but not saved ! - need to save the views\n",cellname,viewname)
return(nil)
)

strmout_str = strcat(
bin_strmout
" "
sprintf(str "-library %s" libname)
" "
sprintf(str "-strmFile %s.gds" cellname)
" "
sprintf(str "-runDir %s" strmOutRunDir)
" "
sprintf(str "-topCell %s" cellname )
" "
sprintf(str "-view %s" viewname )
" "
sprintf(str "-techLib %s" techFileName)
" "
sprintf(str "-logFile %s.log" cellname)
" "
) nil nil

printf("Running wavStrmOut on cell: %s view: %s\n",cellname,viewname)
;wavRunGuiForm~>wavGenGdsField~>value = sprintf(wavGenGdsRun "GENERATING GDS for %s" cellname)
get(wavRunGuiForm wavRunGuiForm~>wavGenGdsField~>value = "Genereating GDS")

if( !system( strmout_str) then
printf("GDS file generation failed - check %s/%s.log file !\n" strmOutRunDir,cellname)
;wavRunGuiForm~>wavGenGdsField~>value = "Streamout Failed - Check Log File"
get(wavRunGuiForm wavRunGuiForm~>wavGenGdsField~>value = "Streamout Failed - Check Log File")
return(nil)
else
printf( "GDS log file located at %s/strmOut.log\n", strmOutRunDir )
printf( "GDS file located at %s/%s.gds\n", strmOutRunDir,cellname )
;wavRunGuiForm~>wavGenGdsField~>value = "GDS CREATED SUCCESFULLY"
get(wavRunGuiForm wavRunGuiForm~>wavGenGdsField~>value = "GDS Created Successfully")
return(t)
) ; end if
) ; end prog
) ; end wavGenGds

  • First of all the calls to get() are completely unnecessary - I don't know why you're doing that. If you just had:

    wavRunGuiForm~>wavGenGdsField~>value = "Genereating GDS" 

    then that would be sufficient. What your code is actually doing is doing that (because it's an argument to get()), and then doing:

    get(wavRunGuiForm "Genereating GDS")

    which almost certainly just returns nil, because there's no field or property called "Genereating GDS". It passes that string because that's the return value of the assignment. So the get() calls are unnecessary - the simple assignment would be enough.

    Now, to your problem. The issue is that the system() call is blocking, and virtuoso is single-threaded (mostly) and so the UI doesn't update until the callback is completed (that's when the UI loop continues). You can solve this using hiFlush() - see the simple example below to see how this works:

    procedure(runSomething(form)
      form->status->value="Generating"
      hiFlush()
      system("sleep 10")
      form->status->value="Finished"
    )

    hiCreateAppForm(
      ?name 'myForm
      ?fields list(
        hiCreateStringField(?name 'status ?editable nil)
      )
      ?formTitle "Silly example"
      ?callback 'runSomething
    )

    hiDisplayForm(myForm)

    Regards,

    Andrew.

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