Devel::GlobalDestruction - Provides function returning the equivalent of
${^GLOBAL_PHASE} eq 'DESTRUCT' for older perls.
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();
}
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.
This module uses the Sub::Exporter::Progressive manpage so the exports may be renamed,
aliased, etc. if the Sub::Exporter manpage 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 .
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 (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.
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