1#!/usr/bin/perl
2# Copyright (c) 2001-2005 The Regents of The University of Michigan
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;

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31# This script diffs two SimpleScalar statistics output files.
32#
33
34use Getopt::Std;
35
36#
37# -t thresh sets threshold for ignoring differences (in %)
38# -p sorts differences by % chg (default is alphabetic)
39# -d ignores all distributions
40#
41
42getopts('dfn:pt:h');
43
44if ($#ARGV < 1)
45{
46 print "\nError: need two file arguments (<reference> <new>).\n";
47 print " Options: -d = Ignore distributions\n";
48 print " -p = Sort errors by percentage\n";
49 print " -h = Diff header info separately from stats\n";
50 print " -n <num> = Print top <num> errors (default 20)\n";
51 print " -t <num> = Error threshold in percent (default 1)\n\n";
52 die -1;
53}
54
55open(REF, "<$ARGV[0]") or die "Error: can't open $ARGV[0].\n";

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123 $stathandle = shift;
124
125 $in_dist = undef;
126 $hashref = { }; # initialize hash for values
127
128 while (<$stathandle>)
129 {
130 next if /^\s*$/; # skip blank lines
131 last if /End Simulation Statistics/;
132
133 s/ *#.*//; # strip comments
134
135 if (/^Memory usage: (\d+) KBytes/) {
136 $stat = 'memory usage';
137 $value = $1;
138 }
139 elsif ($in_dist) {
140 if (/(.*)\.end_dist/) {
141 # end line of distribution: clear $in_dist flag
142 $in_dist = undef;
143 next;
144 }
145 if ($opt_d) {
146 next; # bail out if we are ignoring dists...
147 } elsif (/(.*)\.(min|max)_value/) {
148 # treat these like normal stats
149 ($stat, $value) = /^(\S+)\s+(.*)/;
150 } else {
151 ($stat, $value) =
152 /^(\S+(?:.*\S)?)\s+(\d+)\s+\d+\.\d+%/;
153 $stat = $in_dist . '::' . $stat;
154 }
155 }
156 else {
157 if (/(.*)\.start_dist/) {
158 # start line of distribution: set $in_dist flag
159 # and save distribution name for future reference
160 $in_dist = $1;
161 $stat = $1;
162 $value = 0;
163 }
164 else {
165 ($stat, $value) = /^(\S+)\s+(.*)/;
166 }
167 }
168
169 $$hashref{$stat} = $value;
170 }
171

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321 if (++$num_errs >= $omit_count)
322 {
323 print "[... additional errors omitted ...]\n";
324 last;
325 }
326}
327
328#
329# Report missing stats
330#
331# get count
332$missing_stats = scalar(@missing_stats);
333
334if ($missing_stats)
335{
336 print "\nMissing $missing_stats reference statistics:\n\n";
337 foreach $stat (@missing_stats)
338 {

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343}
344
345#
346# Any stats left in newhash are added since the reference file
347#
348
349@added_stats = keys %$newhash;
350
351# get count
352$added_stats = scalar(@added_stats);
353
354if ($added_stats)
355{
356 print "\nFound $added_stats new statistics:\n\n";
357 foreach $stat (sort @added_stats)
358 {
359# print "\t$stat\n";
360 printf " %-50s ", $stat;
361 print "$$newhash{$stat}\n";
362 }
363}
364
365cleanup();
366# Exit code is 0 if all stats are found (with no extras) & no stats error, 1 otherwise
367$status = ($missing_stats == 0 && $added_stats == 0 && $max_err_mag == 0.0) ? 0 : 1;
368exit $status;
369
370sub cleanup
371{
372 unlink($refheader) if ($refheader);
373 unlink($newheader) if ($newheader);
374}