devel::globaldestruction(3) [mojave man page]

Devel::GlobalDestruction(3)				User Contributed Perl Documentation			       Devel::GlobalDestruction(3)

NAME

       Devel::GlobalDestruction - Provides function returning the equivalent of "${^GLOBAL_PHASE} eq 'DESTRUCT'" for older perls.

SYNOPSIS

	   package Foo;
	   use Devel::GlobalDestruction;

	   use namespace::clean; # to avoid having an "in_global_destruction" method

	   sub DESTROY {
	       return if in_global_destruction;

	       do_something_a_little_tricky();
	   }

DESCRIPTION

       Perl's global destruction is a little tricky to deal with WRT finalizers because it's not ordered and objects can sometimes disappear.

       Writing defensive destructors is hard and annoying, and usually if global destruction is happening you only need the destructors that free
       up non process local resources to actually execute.

       For these constructors you can avoid the mess by simply bailing out if global destruction is in effect.

EXPORTS

       This module uses Sub::Exporter::Progressive so the exports may be renamed, aliased, etc. if Sub::Exporter is present.

       in_global_destruction
	   Returns true if the interpreter is in global destruction. In perl 5.14+, this returns "${^GLOBAL_PHASE} eq 'DESTRUCT'", and on earlier
	   perls, detects it using the value of "PL_main_cv" or "PL_dirty".

AUTHORS

       Yuval Kogman <nothingmuch@woobling.org>

       Florian Ragwitz <rafl@debian.org>

       Jesse Luehrs <doy@tozt.net>

       Peter Rabbitson <ribasushi@cpan.org>

       Arthur Axel 'fREW' Schmidt <frioux@gmail.com>

       Elizabeth Mattijsen <liz@dijkmat.nl>

       Greham Knop <haarg@haarg.org>

COPYRIGHT

	   Copyright (c) 2008 Yuval Kogman. All rights reserved
	   This program is free software; you can redistribute
	   it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2013-11-01					       Devel::GlobalDestruction(3)

Sub::Exporter::Progressive(3)				User Contributed Perl Documentation			     Sub::Exporter::Progressive(3)

NAME

       Sub::Exporter::Progressive - Only use Sub::Exporter if you need it

SYNOPSIS

	package Syntax::Keyword::Gather;

	use Sub::Exporter::Progressive -setup => {
	  exports => [qw( break gather gathered take )],
	  groups => {
	    default => [qw( break gather gathered take )],
	  },
	};

	# elsewhere

	# uses Exporter for speed
	use Syntax::Keyword::Gather;

	# somewhere else

	# uses Sub::Exporter for features
	use Syntax::Keyword::Gather 'gather', take => { -as => 'grab' };

DESCRIPTION

       Sub::Exporter is an incredibly powerful module, but with that power comes great responsibility, er- as well as some runtime penalties.
       This module is a "Sub::Exporter" wrapper that will let your users just use Exporter if all they are doing is picking exports, but use
       "Sub::Exporter" if your users try to use "Sub::Exporter"'s more advanced features, like renaming exports, if they try to use them.

       Note that this module will export @EXPORT, @EXPORT_OK and %EXPORT_TAGS package variables for "Exporter" to work.  Additionally, if your
       package uses advanced "Sub::Exporter" features like currying, this module will only ever use "Sub::Exporter", so you might as well use it
       directly.

AUTHOR

       frew - Arthur Axel Schmidt (cpan:FREW) <frioux+cpan@gmail.com>

CONTRIBUTORS

       ilmari - Dagfinn Ilmari Mannsaaker (cpan:ILMARI) <ilmari@ilmari.org>

       mst - Matt S. Trout (cpan:MSTROUT) <mst@shadowcat.co.uk>

       leont - Leon Timmermans (cpan:LEONT) <leont@cpan.org>

COPYRIGHT

       Copyright (c) 2012 the Sub::Exporter::Progressive "AUTHOR" and "CONTRIBUTORS" as listed above.

LICENSE

       This library is free software and may be distributed under the same terms as perl itself.

perl v5.18.2							    2013-10-28					     Sub::Exporter::Progressive(3)