-#!/usr/bin/perl
-
package Devel::GlobalDestruction;
use strict;
use warnings;
-use vars qw($VERSION @ISA);
-
-BEGIN {
- $VERSION = '0.02';
+our $VERSION = '0.09';
- local $@;
+use Sub::Exporter::Progressive -setup => {
+ exports => [ qw(in_global_destruction) ],
+ groups => { default => [ -all ] },
+};
- eval {
- require XSLoader;
- __PACKAGE__->XSLoader::load($VERSION);
- 1;
- } or do {
- require DynaLoader;
- push @ISA, 'DynaLoader';
- __PACKAGE__->bootstrap($VERSION);
- };
+# we run 5.14+ - everything is in core
+#
+if (defined ${^GLOBAL_PHASE}) {
+ eval 'sub in_global_destruction () { ${^GLOBAL_PHASE} eq q[DESTRUCT] }; 1'
+ or die $@;
+}
+# try to load the xs version if it was compiled
+#
+elsif (eval {
+ require XSLoader;
+ XSLoader::load(__PACKAGE__, $VERSION);
+ 1;
+}) {
+ # the eval already installed everything, nothing to do
+}
+else {
+ # internally, PL_main_start is nulled immediately before entering global destruction
+ # and we can use B to detect that. It will also be null before the main runloop starts,
+ # so we check install a CHECK if needed to detect that.
+ require B;
+ my $started = !B::main_start()->isa(q[B::NULL]);
+ unless ($started) {
+ eval 'CHECK { $started = 1 }; 1'
+ or die $@;
+ }
+ eval 'sub in_global_destruction () { $started && B::main_start()->isa(q[B::NULL]) }; 1'
+ or die $@;
}
-use Sub::Exporter -setup => {
- exports => [ qw(in_global_destruction) ],
- groups => { default => [ -all ] },
-};
+1; # keep require happy
-__PACKAGE__
__END__
-=pod
-
=head1 NAME
-Devel::GlobalDestruction - Expose PL_dirty, the flag which marks global
+Devel::GlobalDestruction - Expose the flag which marks global
destruction.
=head1 SYNOPSIS
- package Foo;
- use Devel::GlobalDestruction;
+ package Foo;
+ use Devel::GlobalDestruction;
- use namespace::clean; # to avoid having an "in_global_destruction" method
+ use namespace::clean; # to avoid having an "in_global_destruction" method
- sub DESTROY {
- return if in_global_destruction;
+ sub DESTROY {
+ return if in_global_destruction;
- do_something_a_little_tricky();
- }
+ do_something_a_little_tricky();
+ }
=head1 DESCRIPTION
=head1 EXPORTS
-This module uses L<Sub::Exporter> so the exports may be renamed, aliased, etc.
+This module uses L<Sub::Exporter::Progressive> so the exports may be renamed,
+aliased, etc. if L<Sub::Exporter> is present.
=over 4
=item in_global_destruction
-Returns the current value of C<PL_dirty>.
+Returns true if the interpreter is in global destruction. In perl 5.14+, this
+returns C<${^GLOBAL_PHASE} eq 'DESTRUCT'>, and on earlier perls, detects it using
+the value of C<PL_main_start> or C<PL_dirty>.
=back
-=head1 VERSION CONTROL
+=head1 AUTHORS
-This module is maintained using Darcs. You can get the latest version from
-L<http://nothingmuch.woobling.org/code>, and use C<darcs send> to commit
-changes.
+Yuval Kogman E<lt>nothingmuch@woobling.orgE<gt>
-=head1 AUTHOR
+Florian Ragwitz E<lt>rafl@debian.orgE<gt>
-Yuval Kogman E<lt>nothingmuch@woobling.orgE<gt>
+Jesse Luehrs E<lt>doy@tozt.netE<gt>
-=head1 COPYRIGHT
+Peter Rabbitson E<lt>ribasushi@cpan.orgE<gt>
- 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.
+Arthur Axel 'fREW' Schmidt E<lt>frioux@gmail.comE<gt>
-=cut
+Elizabeth Mattijsen E<lt>liz@dijkmat.nlE<gt>
+Greham Knop E<lt>haarg@haarg.orgE<gt>
+=head1 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.
+
+=cut