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 #!/usr/bin/perl

 # This Source Code Form is subject to the terms of the Mozilla Public

 # License, v. 2.0. If a copy of the MPL was not distributed with this

 # file, You can obtain one at http://mozilla.org/MPL/2.0/.

 # split-profile.pl Documentation:

 # 

 # This script uses jprof's includes (-i) and excludes (-e) options to

 # split profiles into segments.  It takes as input a single text file,

 # and from that text file creates a series of jprof profiles in the

 # directory in which it is run.  It expects the application binaries

 # with which the profile was made, including jprof, and the jprof

 # profile data, to be in a directory called "bin" that is a subdirectory

 # of the current directory, and it will output the profiles into the

 # current directory.

 #

 # The input file format looks like the following:

 #

 #   poll g_main_poll

 #   GetRuleCascade CSSRuleProcessor::GetRuleCascade(nsPresContext *, nsIAtom *)

 #   RuleProcessorData RuleProcessorData::RuleProcessorData(nsPresContext *, nsIContent *, nsRuleWalker *, nsCompatibility *)

 #

 # From this input file, the script will construct a profile called

 # 00.html that contains the whole profile, a profile called 01-poll.html

 # that includes only stacks with g_main_poll, a profile called

 # 02-GetRuleCascade.html that includes only stacks that have

 # GetRuleCascade and do not have g_main_poll, a profile called

 # 03-RuleProcessorData.html that includes only stacks that have the

 # RuleProcessorData constructor and do not have GetRuleCascade or

 # g_main_poll, and a profile called 04.html that includes only stacks

 # that do not have any of the three functions in them.

 #

 # This means that all of the segments of the profile, except 00.html,

 # are mutually exclusive.  Thus clever ordering of the functions in the

 # input file can lead to a logical splitting of the profile into

 # segments.

 use strict;

 my @names;

 my @sigs;

 sub read_info($) {

     my ($fname) = @_;

     open(INFO, "<$fname");

     my $i = 0;

     while (<INFO>) {

         chop;

         my $line = $_;

         my $idx = index($line, " ");

         my $name = substr($line, 0, $idx);

         my $sig = substr($line, $idx+1);

         $names[$i] = $name;

         $sigs[$i] = $sig;

         ++$i;

     }

 }

 sub run_profile($$) {

     my ($options, $outfile) = @_;

     print  "./jprof$options mozilla-bin jprof-log > ../$outfile.html\n";

     system "./jprof$options mozilla-bin jprof-log > ../$outfile.html";

 }

 sub run_profiles() {

     run_profile("", "00");

     for (my $i = 0; $i <= $#names + 1; ++$i) {

         my $options = "";

         for (my $j = 0; $j < $i; ++$j) {

             $options .= " -e\"$sigs[$j]\"";

         }

         if ($i <= $#names) {

             $options .= " -i\"$sigs[$i]\"";

         }

         my $num;

         my $n = $i + 1;

         if ($n < 10) {

             $num = "0$n";

         } else {

             $num = "$n";

         }

         if ($i <= $#names) {

             run_profile($options, "$num-$names[$i]");

         } else {

             run_profile($options, "$num");

         }

     }

 }

 ($#ARGV == 0) || die "Usage: split-profile.pl <info-file>\n";

 read_info($ARGV[0]);

 chdir "bin" || die "Can't change directory to bin.";

 run_profiles();