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178 | ###############################################################################
# Copyright (c) 2005-2024 by Altair Engineering, Inc.
# All rights reserved.
#
# Altair Engineering, Inc. makes this software available as part of the Vision
# tool platform. As long as you are a licensee of the Vision tool platform
# you may make copies of the software and modify it to be used within the
# Vision tool platform, but you must include all of this notice on any copy.
# Redistribution without written permission to any third party, with or
# without modification, is not permitted.
# Altair Engineering, Inc. does not warrant that this software is error free
# or fit for any purpose. Altair Engineering, Inc. disclaims any liability for
# all claims, expenses, losses, damages and costs any user may incur as a
# result of using, copying or modifying the software.
# =============================================================================
# @plugin
# Find Heavy Signals
# @namespace
# HeavyNodes
# @section
# Analyze the Loaded Database
# @description
# Loop over all signals and count the number of pins for each signal.
# The 10 biggest signals are stored in the Mem window.
# @non-interactive
# @files
# heavyNodes.tcl
# @example
# demo/spice/gl85.sp
# demo/spice/csim90/chip2.sp
# @cmdline
# -hspice @example[0]
# -userware @files[0]
# @tag
# spice netlist zdb
###############################################################################
# =============================================================================
# Init - Initialize the plugin.
# =============================================================================
#
proc HeavyNodes:Init {} {
gui database runOrRegisterChangedCallback HeavyNodes:Run
}
# =============================================================================
# Finit - Finalize the plugin.
# =============================================================================
#
proc HeavyNodes:Finit {} {
gui database removeChangedCallback HeavyNodes:Run
}
# =============================================================================
# Run - Start finding heavy nodes.
# =============================================================================
#
proc HeavyNodes:Run {db} {
##
# Return if the database is empty.
#
if {$db == {}} {
return
}
set topList {} ;# top-ten list
##
# loop over all signals in all top modules
#
$db foreach top mod {
$db flat foreach signal $mod sig {
##
# skip power, ground and negpower nets
#
if {[$db isPgNet $sig]} {
continue
}
##
# Skip signals that contain nets with a constant value
#
set skip 0
$db flat foreach net $sig net {
if {[$db value $net] != ""} {
set skip 1
break
}
}
if {$skip} {
continue
}
##
# count the number of connected pins
#
set cnt 0
$db flat foreach pin $sig p {incr cnt}
##
# insert this net into top-ten list
#
set topList [HeavyNodes:addTopTenHeavyNodes $topList $cnt $sig]
}
}
##
# Clear and activate the Mem Window
#
gui mem clear
gui window show Schem
gui window show Mem
##
# Store the result into the Mem Window.
#
set res [HeavyNodes:getTopTenNodes $db $topList]
gui mem append $res
}
# -----------------------------------------------------------------------------
# addTopTenHeavyNodes - The addTopTenHeavyNodes procedure inserts the given oid
# and value into a sorted list with max length of 10.
# The biggest values come first.
# -----------------------------------------------------------------------------
#
proc HeavyNodes:addTopTenHeavyNodes {list value oid} {
set entry [list $value $oid]
set i 0
foreach e $list {
if { $value > [lindex $e 0] } {
##
# insert entry before $e and limit list length to max 10.
#
set list [linsert $list $i $entry]
return [lrange $list 0 9]
}
incr i
}
if {$i < 10} {
##
# we didn't insert, but the list length is < 10 - so we append
#
lappend list $entry
}
return $list
}
# -----------------------------------------------------------------------------
# getTopTenNodes - The getTopTenNodes procedure returns a list of oids from the
# given top-ten list. In addition, the count fields are added
# as "count" attribute to the nets and the tooltipsWithAttrs
# flag is set (to display attributes in tooltips).
# -----------------------------------------------------------------------------
#
proc HeavyNodes:getTopTenNodes {db list} {
set res {}
foreach n $list {
set cnt [lindex $n 0]
set net [lindex $n 1]
$db attr $net set count=$cnt
lappend res $net
}
gui settings set "tooltipsWithAttrs" 1
return $res
}
# =============================================================================
# Call the initialization procedure.
# =============================================================================
#
HeavyNodes:Init
|