scripts/cleanup-trace-events.pl

   1 #!/usr/bin/env perl
   2 # Copyright (C) 2013 Red Hat, Inc.
   3 #
   4 # Authors:
   5 #  Markus Armbruster <armbru@redhat.com>
   6 #
   7 # This work is licensed under the terms of the GNU GPL, version 2 or
   8 # later.  See the COPYING file in the top-level directory.
   9
  10 # Usage: cleanup-trace-events.pl trace-events
  11 #
  12 # Print cleaned up trace-events to standard output.
  13
  14 use warnings;
  15 use strict;
  16 use File::Basename;
  17
  18 my $buf = '';
  19 my %seen = ();
  20
  21 sub out {
  22     print $buf;
  23     $buf = '';
  24     %seen = ();
  25 }
  26
  27 $#ARGV == 0 or die "usage: $0 FILE";
  28 my $in = $ARGV[0];
  29 my $dir = dirname($in);
  30 open(IN, $in) or die "open $in: $!";
  31 chdir($dir) or die "chdir $dir: $!";
  32
  33 while (<IN>) {
  34     if (/^(disable |(tcg) |vcpu )*([a-z_0-9]+)\(/i) {
  35         my $pat = "trace_$3";
  36         $pat .= '_tcg' if (defined $2);
  37         open GREP, '-|', 'git', 'grep', '-lw', '--max-depth', '1', $pat
  38             or die "run git grep: $!";
  39         while (my $fname = <GREP>) {
  40             chomp $fname;
  41             next if $seen{$fname} || $fname eq 'trace-events';
  42             $seen{$fname} = 1;
  43             $buf = "# $fname\n" . $buf;
  44         }
  45         unless (close GREP) {
  46             die "close git grep: $!"
  47                 if $!;
  48             next;
  49         }
  50     } elsif (/^# ([^ ]*\.[ch])$/) {
  51         out;
  52         next;
  53     } elsif (!/^#|^$/) {
  54         warn "unintelligible line";
  55     }
  56     $buf .= $_;
  57 }
  58
  59 out;
  60 close(IN) or die "close $in: $!";