29acf859eb
This script (util/diff_config.pl) takes two config.ini files and compares them. It highlights value changes, as well as displaying which parts are unique to a specific config.ini file. This is useful when trying to replicate an earlier experiment and when trying to make small changes to an existing configuration.
231 lines
8.3 KiB
Perl
Executable file
231 lines
8.3 KiB
Perl
Executable file
# Copyright (c) 2012 ARM Limited
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Author: Uri Wiener
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#
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# Script which takes two config.ini files and generates a semantic diff. The
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# resulting diff shows which parts of the configurations differed, and in the
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# case that there is a difference it displays it. This allows rapid comparision
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# of two gem5 runs and therefore provides an easy method to ensure that
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# configurations are similar, or not.
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#!/usr/bin/perl
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use strict;
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die "Please check args... " unless ($#ARGV == 1);
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my $config1FileName = $ARGV[0];
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my $config2FileName = $ARGV[1];
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# Get just the name of the file, rather than the full path
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my $config1ShortName = getFilenameFromPath($config1FileName);
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my $config2ShortName = getFilenameFromPath($config2FileName);
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# If the file names are the same, use the full path
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if ($config1ShortName == $config2ShortName) {
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$config1ShortName = $config1FileName;
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$config2ShortName = $config2FileName;
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}
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print "\nComparing the following files:\n",
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"\t$config1FileName\n",
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"\tvs.\n",
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"\t$config2FileName\n\n";
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# Read in the two config files
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my %config1 = readConfig($config1FileName);
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my %config2 = readConfig($config2FileName);
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# Compare the two config files. For the first comparision we also compare the
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# values (setting the first parameter to 1). There is little point doing this
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# for the second comparison as it will yield the same information.
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compareConfigs( 1, \%config1, $config1ShortName, \%config2, $config2ShortName );
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compareConfigs( 0, \%config2, $config2ShortName, \%config1, $config1ShortName );
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########################################################
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# Compare values and return unique values
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########################################################
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sub compareValues {
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my $values1 = shift;
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my $values2 = shift;
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my @splitValues1 = split(/ /, $values1);
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my @splitValues2 = split(/ /, $values2);
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my @uniqueValues;
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foreach my $val1 (@splitValues1) {
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my $foundMatch = 0;
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# if both values equal set match flag, then break loop
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foreach my $val2 (@splitValues2) {
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if ($val1 eq $val2) {
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$foundMatch = 1;
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last;
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}
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# in case of ports, ignore port number and match port name only
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if ($val1 =~ /\[/ and $val2 =~ /\[/) {
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$val1 =~ m/^(.*)\[.*\]/;
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my $val1Name = $1;
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$val2 =~ m/^(.*)\[.*\]/;
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my $val2Name = $1;
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# if both values equal set match flag, then break loop
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if ($val1Name eq $val2Name) {
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$foundMatch = 1;
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last;
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}
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}
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}
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# Otherwise, the value is unique.
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if (not $foundMatch) {
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push(@uniqueValues, $val1);
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}
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}
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return join(", ", @uniqueValues);
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}
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########################################################
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# Compare two config files. Print differences.
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########################################################
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sub compareConfigs {
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my $compareFields = shift; # Specfy if the fields should be compared
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my $config1Ref = shift; # Config 1
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my $config1Name = shift; # Config 1 name
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my $config2Ref = shift; # Config 2
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my $config2Name = shift; # Config 2 name
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my @uniqueSections;
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foreach my $sectionName ( sort keys %$config1Ref ) {
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# check if section exists in config2
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if ( not exists $config2Ref->{$sectionName} ) {
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push(@uniqueSections, $sectionName);
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next;
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}
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my %section1 = %{ $config1Ref->{$sectionName} };
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my %section2 = %{ $config2Ref->{$sectionName} };
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my $firstDifInSection = 1;
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if (not $compareFields) {
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next;
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}
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# Compare the values of each field; print any differences
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foreach my $field ( sort keys %section1 ) {
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if ($section1{$field} ne $section2{$field}) {
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my $diff1 = compareValues($section1{$field}, $section2{$field});
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my $diff2 = compareValues($section2{$field}, $section1{$field});
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# If same, skip to next iteration
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if ($diff1 eq "" and $diff2 eq "") {
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next;
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}
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# If it is the first difference in this section, print section
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# name
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if ($firstDifInSection) {
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print "$sectionName\n";
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$firstDifInSection = 0;
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}
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# Print the actual differences
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print "\t$field\n";
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if ($diff1 ne "") {
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print "\t\t$config1Name: ", $diff1, "\n";
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}
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if ($diff2 ne "") {
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print "\t\t$config2Name: ", $diff2, "\n";
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}
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} # end if
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} # end foreach field
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} # end foreach section
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# If there are unique sections, print them
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if ($#uniqueSections != -1) {
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print "Sections which exist only in $config1Name: ",
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join(", ", @uniqueSections), "\n";
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}
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}
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########################################################
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# Split the path to get just the filename
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########################################################
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sub getFilenameFromPath {
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my $filename = shift; # the input filename including path
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my @splitName = split(/\//, $filename);
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return $splitName[$#splitName]; # return just the filename, without path
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}
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########################################################
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# Read in the config file section by section.
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########################################################
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sub readConfig {
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my $filename = shift;
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my %config;
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open CONFIG, "<$filename" or die $!;
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while ( my $line = <CONFIG> ) {
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if ( $line =~ /^\[.*\]$/ ) {
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readSection( $line, \%config );
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}
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}
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close CONFIG;
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return %config;
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}
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########################################################
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# Read in each section of the config file.
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########################################################
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sub readSection {
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my $line = shift;
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my $config_ref = shift;
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$line =~ m/\[(.*)\]/;
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my $sectionName = $1;
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while ( my $line = <CONFIG> ) {
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if ( $line =~ /^$/ ) {
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last;
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}
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my @field = split( /=/, $line );
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my $fieldName = $field[0];
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my $value = $field[1];
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chomp $value;
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$config_ref->{$sectionName}{$fieldName} = $value;
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}
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}
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