Devel::GlobalDestructiUser)Contributed Perl DocumenDevel::GlobalDestruction(3)NAMEDevel::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)
