File Coverage

blib/lib/Glib/Ex/FreezeNotify.pm

Criterion	Covered	Total	%
statement	15	29	51.7
branch	0	2	0.0
condition	0	3	0.0
subroutine	5	8	62.5
pod	2	2	100.0
total	22	44	50.0

# Copyright 2008, 2009, 2010, 2011, 2012, 2014 Kevin Ryde

# This file is part of Glib-Ex-ObjectBits.
#
# Glib-Ex-ObjectBits is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 3, or (at your option) any later
# version.
#
# Glib-Ex-ObjectBits is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with Glib-Ex-ObjectBits.  If not, see .

package Glib::Ex::FreezeNotify;
use 5.008;
use strict;
use warnings;
use Scalar::Util;
use Devel::GlobalDestruction 'in_global_destruction';

our $VERSION = 16;

sub new {
  my $class = shift;
  my $self = bless [], $class;
  $self->add (@_);
  return $self;
}

sub add {
  my $self = shift;
  ### FreezeNotify add(): "@_"
  foreach my $object (@_) {
    $object->freeze_notify;
    push @$self, $object;
    Scalar::Util::weaken ($self->[-1]);
  }
}

sub DESTROY {
  my ($self) = @_;
  ### FreezeNotify DESTROY()
  while (@$self) {
    my $object = pop @$self;
    if (defined $object   # possible undef by weakening
        && ! in_global_destruction()) {
      ### FreezeNotify thaw: "$object"
      $object->thaw_notify;
    }
  }
}

1;
__END__