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.\" ========================================================================
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.IX Title "Devel::GlobalDestruction 3"
.TH Devel::GlobalDestruction 3 "2016-10-31" "perl v5.26.3" "User Contributed Perl Documentation"
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.SH "NAME"
Devel::GlobalDestruction \- Provides function returning the equivalent of
"${^GLOBAL_PHASE} eq \*(AqDESTRUCT\*(Aq" for older perls.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\& package Foo;
\& use Devel::GlobalDestruction;
\&
\& use namespace::clean; # to avoid having an "in_global_destruction" method
\&
\& sub DESTROY {
\& return if in_global_destruction;
\&
\& do_something_a_little_tricky();
\& }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Perl's global destruction is a little tricky to deal with \s-1WRT\s0 finalizers
because it's not ordered and objects can sometimes disappear.
.PP
Writing defensive destructors is hard and annoying, and usually if global
destruction is happening you only need the destructors that free up non
process local resources to actually execute.
.PP
For these constructors you can avoid the mess by simply bailing out if global
destruction is in effect.
.SH "EXPORTS"
.IX Header "EXPORTS"
This module uses Sub::Exporter::Progressive so the exports may be renamed,
aliased, etc. if Sub::Exporter is present.
.IP "in_global_destruction" 4
.IX Item "in_global_destruction"
Returns true if the interpreter is in global destruction. In perl 5.14+, this
returns \f(CW\*(C`${^GLOBAL_PHASE} eq \*(AqDESTRUCT\*(Aq\*(C'\fR, and on earlier perls, detects it using
the value of \f(CW\*(C`PL_main_cv\*(C'\fR or \f(CW\*(C`PL_dirty\*(C'\fR.
.SH "AUTHORS"
.IX Header "AUTHORS"
Yuval Kogman <nothingmuch@woobling.org>
.PP
Florian Ragwitz <rafl@debian.org>
.PP
Jesse Luehrs <doy@tozt.net>
.PP
Peter Rabbitson <ribasushi@cpan.org>
.PP
Arthur Axel 'fREW' Schmidt <frioux@gmail.com>
.PP
Elizabeth Mattijsen <liz@dijkmat.nl>
.PP
Greham Knop <haarg@haarg.org>
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
.Vb 3
\& 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.
.Ve