com.sun.electric.tool.logicaleffort

Class LESizer

java.lang.Object

com.sun.electric.tool.logicaleffort.LESizer

public class LESizer
extends java.lang.Object

LESizer sizes an LENetlist. The LENetlist is generated by LENetlister from the Electric database, or perhaps read in from a Spice file(?) NOTE: the only 'Electric' objects used are in LENetlister, any objects referenced in this file are from the logicaleffort package, although their names may imply otherwise. Their names are as such because their names match PNP's naming scheme.

Author:

gainsley

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LESizer.Alg Alg is a typesafe enum class that describes the algorithm to be used

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LESizer(LESizer.Alg alg, LENetlister1 netlist, Job job, ErrorLogger errorLogger) Creates a new instance of LESizer

Method Summary

Modifier and Type	Method and Description
protected java.util.List	getEndNets()
protected boolean	optimizeLoops(float maxDeltaX, int N, boolean verbose, float alpha, float keeperRatio) Optimize using loop algorithm;
protected void	printDesign() Dump the design information for debugging purposes
protected int	printDesignSizes(java.lang.String filename) Generate simple size file (for regression purposes)
protected int	printDesignSkill(java.lang.String filename, java.lang.String libname, java.lang.String cellname) Generate SKILL backannotation file
static void	test1() run a contrived test
protected void	testcoverage() Dummy method to improve test coverage

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LESizer

protected LESizer(LESizer.Alg alg,
                  LENetlister1 netlist,
                  Job job,
                  ErrorLogger errorLogger)

Creates a new instance of LESizer

Method Detail

optimizeLoops

protected boolean optimizeLoops(float maxDeltaX,
                                int N,
                                boolean verbose,
                                float alpha,
                                float keeperRatio)

Optimize using loop algorithm;

Parameters:

maxDeltaX - maximum tolerance allowed in X

N - maximum number of loops

verbose - print out size information for each optimization loop

Returns:

true if succeeded, false otherwise Optimization will stop when the difference in sizes (X) is less than maxDeltaX, or when N iterations have occurred.

getEndNets

protected java.util.List getEndNets()

printDesign

protected void printDesign()

Dump the design information for debugging purposes

printDesignSizes

protected int printDesignSizes(java.lang.String filename)

Generate simple size file (for regression purposes)

Parameters:

filename - output filename

printDesignSkill

protected int printDesignSkill(java.lang.String filename,
                               java.lang.String libname,
                               java.lang.String cellname)

Generate SKILL backannotation file

Parameters:

filename - output filename

libname - The Opus library name to be annotated

cellname - The Opus cell to be annotated

testcoverage

protected void testcoverage()

Dummy method to improve test coverage

test1

public static void test1()

run a contrived test