tests/utils/babelstats.pl

   1 #!/usr/bin/perl
   2
   3 # Copyright (C) - 2012 Christian Babeux <christian.babeux@efficios.com>
   4 #
   5 # This program is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License, version 2 only, as
   7 # published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 # more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along with
  15 # this program; if not, write to the Free Software Foundation, Inc., 51
  16 # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 use strict;
  19 use warnings;
  20
  21 use Getopt::Long;
  22
  23 my $opt_tracepoint;
  24
  25 GetOptions('tracepoint=s' => \$opt_tracepoint)
  26         or die("Invalid command-line option\n");
  27
  28 defined($opt_tracepoint)
  29         or die("Missing tracepoint, use --tracepoint <name>");
  30
  31 # Parse an array string.
  32 # The format is as follow: [ [index] = value, ... ]
  33 sub parse_array
  34 {
  35         my ($arr_str) = @_;
  36         my @array = ();
  37
  38         # Strip leading and ending brackets, remove whitespace
  39         $arr_str =~ s/^\[//;
  40         $arr_str =~ s/\]$//;
  41         $arr_str =~ s/\s//g;
  42
  43         my @entries = split(',', $arr_str);
  44
  45         foreach my $entry (@entries) {
  46                 if ($entry =~ /^\[(\d+)\]=(\d+)$/) {
  47                         my $index = $1;
  48                         my $value = $2;
  49                         splice @array, $index, 0, $value;
  50                 }
  51         }
  52
  53         return \@array;
  54 }
  55
  56 # Parse fields values.
  57 # Format can either be a name = array or a name = value pair.
  58 sub parse_fields
  59 {
  60         my ($fields_str) = @_;
  61         my %fields_hash;
  62
  63         my $field_name = '[\w\d_]+';
  64         my $field_value = '[\w\d_\\\*"]+';
  65         my $array = '\[(?:\s\[\d+\]\s=\s\d+,)*\s\[\d+\]\s=\s\d+\s\]';
  66
  67         # Split the various fields
  68         my @fields = ($fields_str =~ /$field_name\s=\s(?:$array|$field_value)/g);
  69
  70         foreach my $field (@fields) {
  71                 if ($field =~ /($field_name)\s=\s($array)/) {
  72                         my $name  = $1;
  73                         my $value = parse_array($2);
  74                         $fields_hash{$name} = $value;
  75                 }
  76
  77                 if ($field =~ /($field_name)\s=\s($field_value)/) {
  78                         my $name  = $1;
  79                         my $value = $2;
  80                         $fields_hash{$name} = $value;
  81                 }
  82         }
  83
  84         return \%fields_hash;
  85 }
  86
  87 # Using an event array, merge all the fields
  88 # of a particular tracepoint.
  89 sub merge_fields
  90 {
  91         my ($events_ref) = @_;
  92         my %merged;
  93
  94         foreach my $event (@{$events_ref}) {
  95                 my $tp_event     = $event->{'tp_event'};
  96                 my $tracepoint  = "${tp_event}";
  97
  98                 foreach my $key (keys %{$event->{'fields'}}) {
  99                         my $val = $event->{'fields'}->{$key};
 100
 101                         # TODO: Merge of array is not implemented.
 102                         next if (ref($val) eq 'ARRAY');
 103                         $merged{$tracepoint}{$key}{$val} = undef;
 104                 }
 105         }
 106
 107         return \%merged;
 108 }
 109
 110 # Print the minimum and maximum of each fields
 111 # for a particular tracepoint.
 112 sub print_fields_stats
 113 {
 114         my ($merged_ref, $tracepoint) = @_;
 115
 116         return unless ($tracepoint && exists $merged_ref->{$tracepoint});
 117
 118         foreach my $field (keys %{$merged_ref->{$tracepoint}}) {
 119                 my @sorted;
 120                 my @val = keys %{$merged_ref->{$tracepoint}->{$field}};
 121
 122                 if ($val[0] =~ /^\d+$/) {
 123                         # Sort numerically
 124                         @sorted = sort { $a <=> $b } @val;
 125                 } elsif ($val[0] =~ /^0x[\da-f]+$/i) {
 126                         # Convert the hex values and sort numerically
 127                         @sorted = sort { hex($a) <=> hex($b) } @val;
 128                 } else {
 129                         # Fallback, alphabetical sort
 130                         @sorted = sort { lc($a) cmp lc($b) } @val;
 131                 }
 132
 133                 my $min = $sorted[0];
 134                 my $max = $sorted[-1];
 135
 136                 print "$field $min $max\n";
 137         }
 138 }
 139
 140 my @events;
 141
 142 while (<>)
 143 {
 144         my $timestamp   = '\[(?:.*)\]';
 145         my $elapsed     = '\((?:.*)\)';
 146         my $hostname    = '(?:.*)';
 147         my $tp_event    = '(.*)';
 148         my $pkt_context = '(?:\{[^}]*\},\s)*';
 149         my $fields      = '\{(.*)\}$';
 150
 151         # Parse babeltrace text output format
 152         if (/$timestamp\s$elapsed\s$hostname\s$tp_event:\s$pkt_context$fields/) {
 153                 my %event_hash;
 154                 $event_hash{'tp_event'}    = $1;
 155                 $event_hash{'fields'}      = parse_fields($2);
 156
 157                 push @events, \%event_hash;
 158         }
 159 }
 160
 161 my %merged_fields = %{merge_fields(\@{events})};
 162 print_fields_stats(\%merged_fields, $opt_tracepoint);