File Coverage

blib/lib/Devel/MAT/Tool/Roots.pm

Criterion	Covered	Total	%
statement	17	24	70.8
branch	0	4	0.0
condition			n/a
subroutine	6	7	85.7
pod	0	1	0.0
total	23	36	63.8

#  You may distribute under the terms of either the GNU General Public License
#  or the Artistic License (the same terms as Perl itself)
#
#  (C) Paul Evans, 2017 -- [e-mail]

package Devel::MAT::Tool::Roots 0.49;

use v5.14;
use warnings;
use base qw( Devel::MAT::Tool );

use List::Util qw( pairs );

use constant CMD => "roots";
use constant CMD_DESC => "Display a list of the root SVs";

=head1 NAME

C - display a list of the root SVs

=head1 DESCRIPTION

This C tool displays a list of all the root SVs.

=cut

=head1 COMMANDS

=head2 roots

   pmat> roots
   the *@ GV                           : GLOB($*) at 0x1381ed0/errgv
   the ARGV GV                         : GLOB(@*I) at 0x139f618/argvgv
   ...

Prints a list of every root SV in the heap.

=cut

sub run
{
   my $self = shift;

   my $df = $self->df;

   Devel::MAT::Cmd->print_table(
      [ map {
         my ( $name, $description ) = @$_;
         my $addr = $df->root_at( $name );
         my $sv = $df->sv_at( $addr );

         $sv   ? [ "$description", Devel::MAT::Cmd->format_sv( $sv ) ] :
         $addr ? [ "$description", sprintf( "PTR(0x%x)", $addr ) ] :
                 ()
      } pairs $df->root_descriptions ],
      sep => ": ",
   );
}

=head1 AUTHOR

Paul Evans

=cut

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