tools/jprof/split-profile.pl@97036ab72558 (annotated)
tools/jprof/split-profile.pl
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rwxr-xr-x
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | #!/usr/bin/perl |
| michael@0 | 2 | # This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | # License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | # file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| michael@0 | 5 | |
| michael@0 | 6 | |
| michael@0 | 7 | # split-profile.pl Documentation: |
| michael@0 | 8 | # |
| michael@0 | 9 | # This script uses jprof's includes (-i) and excludes (-e) options to |
| michael@0 | 10 | # split profiles into segments. It takes as input a single text file, |
| michael@0 | 11 | # and from that text file creates a series of jprof profiles in the |
| michael@0 | 12 | # directory in which it is run. It expects the application binaries |
| michael@0 | 13 | # with which the profile was made, including jprof, and the jprof |
| michael@0 | 14 | # profile data, to be in a directory called "bin" that is a subdirectory |
| michael@0 | 15 | # of the current directory, and it will output the profiles into the |
| michael@0 | 16 | # current directory. |
| michael@0 | 17 | # |
| michael@0 | 18 | # The input file format looks like the following: |
| michael@0 | 19 | # |
| michael@0 | 20 | # poll g_main_poll |
| michael@0 | 21 | # GetRuleCascade CSSRuleProcessor::GetRuleCascade(nsPresContext *, nsIAtom *) |
| michael@0 | 22 | # RuleProcessorData RuleProcessorData::RuleProcessorData(nsPresContext *, nsIContent *, nsRuleWalker *, nsCompatibility *) |
| michael@0 | 23 | # |
| michael@0 | 24 | # From this input file, the script will construct a profile called |
| michael@0 | 25 | # 00.html that contains the whole profile, a profile called 01-poll.html |
| michael@0 | 26 | # that includes only stacks with g_main_poll, a profile called |
| michael@0 | 27 | # 02-GetRuleCascade.html that includes only stacks that have |
| michael@0 | 28 | # GetRuleCascade and do not have g_main_poll, a profile called |
| michael@0 | 29 | # 03-RuleProcessorData.html that includes only stacks that have the |
| michael@0 | 30 | # RuleProcessorData constructor and do not have GetRuleCascade or |
| michael@0 | 31 | # g_main_poll, and a profile called 04.html that includes only stacks |
| michael@0 | 32 | # that do not have any of the three functions in them. |
| michael@0 | 33 | # |
| michael@0 | 34 | # This means that all of the segments of the profile, except 00.html, |
| michael@0 | 35 | # are mutually exclusive. Thus clever ordering of the functions in the |
| michael@0 | 36 | # input file can lead to a logical splitting of the profile into |
| michael@0 | 37 | # segments. |
| michael@0 | 38 | |
| michael@0 | 39 | |
| michael@0 | 40 | use strict; |
| michael@0 | 41 | |
| michael@0 | 42 | my @names; |
| michael@0 | 43 | my @sigs; |
| michael@0 | 44 | |
| michael@0 | 45 | sub read_info($) { |
| michael@0 | 46 | my ($fname) = @_; |
| michael@0 | 47 | |
| michael@0 | 48 | open(INFO, "<$fname"); |
| michael@0 | 49 | my $i = 0; |
| michael@0 | 50 | while (<INFO>) { |
| michael@0 | 51 | chop; |
| michael@0 | 52 | my $line = $_; |
| michael@0 | 53 | my $idx = index($line, " "); |
| michael@0 | 54 | my $name = substr($line, 0, $idx); |
| michael@0 | 55 | my $sig = substr($line, $idx+1); |
| michael@0 | 56 | |
| michael@0 | 57 | $names[$i] = $name; |
| michael@0 | 58 | $sigs[$i] = $sig; |
| michael@0 | 59 | ++$i; |
| michael@0 | 60 | } |
| michael@0 | 61 | } |
| michael@0 | 62 | |
| michael@0 | 63 | sub run_profile($$) { |
| michael@0 | 64 | my ($options, $outfile) = @_; |
| michael@0 | 65 | |
| michael@0 | 66 | print "./jprof$options mozilla-bin jprof-log > ../$outfile.html\n"; |
| michael@0 | 67 | system "./jprof$options mozilla-bin jprof-log > ../$outfile.html"; |
| michael@0 | 68 | } |
| michael@0 | 69 | |
| michael@0 | 70 | sub run_profiles() { |
| michael@0 | 71 | run_profile("", "00"); |
| michael@0 | 72 | |
| michael@0 | 73 | for (my $i = 0; $i <= $#names + 1; ++$i) { |
| michael@0 | 74 | my $options = ""; |
| michael@0 | 75 | for (my $j = 0; $j < $i; ++$j) { |
| michael@0 | 76 | $options .= " -e\"$sigs[$j]\""; |
| michael@0 | 77 | } |
| michael@0 | 78 | if ($i <= $#names) { |
| michael@0 | 79 | $options .= " -i\"$sigs[$i]\""; |
| michael@0 | 80 | } |
| michael@0 | 81 | my $num; |
| michael@0 | 82 | my $n = $i + 1; |
| michael@0 | 83 | if ($n < 10) { |
| michael@0 | 84 | $num = "0$n"; |
| michael@0 | 85 | } else { |
| michael@0 | 86 | $num = "$n"; |
| michael@0 | 87 | } |
| michael@0 | 88 | if ($i <= $#names) { |
| michael@0 | 89 | run_profile($options, "$num-$names[$i]"); |
| michael@0 | 90 | } else { |
| michael@0 | 91 | run_profile($options, "$num"); |
| michael@0 | 92 | } |
| michael@0 | 93 | } |
| michael@0 | 94 | } |
| michael@0 | 95 | |
| michael@0 | 96 | ($#ARGV == 0) || die "Usage: split-profile.pl <info-file>\n"; |
| michael@0 | 97 | |
| michael@0 | 98 | read_info($ARGV[0]); |
| michael@0 | 99 | chdir "bin" || die "Can't change directory to bin."; |
| michael@0 | 100 | run_profiles(); |
