sub _getglob { \*{$_[0]} }
sub _getstash { \%{"$_[0]::"} }
-BEGIN {
- *lt_5_8_3 = $] < 5.008003
- ? sub () { 1 }
- : sub () { 0 }
- ;
-}
+use constant lt_5_8_3 => ( $] < 5.008003 ) ? 1 : 0;
+use constant can_haz_subname => eval { require Sub::Name };
use strictures 1;
use Module::Runtime qw(require_module);
our @EXPORT = qw(
_getglob _install_modifier _load_module _maybe_load_module
- _get_linear_isa
+ _get_linear_isa _getstash _install_coderef _name_coderef
+ _in_global_destruction
);
+sub _in_global_destruction ();
+
sub _install_modifier {
my ($into, $type, $name, $code) = @_;
return 1 if $INC{"${proto}.pm"};
# can't just ->can('can') because a sub-package Foo::Bar::Baz
# creates a 'Baz::' key in Foo::Bar's symbol table
- return 1 if grep !/::$/, keys %{_getstash($_[0])||{}};
+ my $stash = _getstash($_[0])||{};
+ return 1 if grep +(!ref($_) and *$_{CODE}), values %$stash;
require_module($_[0]);
return 1;
}
}
sub _get_linear_isa {
- return mro::get_linear_isa($_[0]);
+ return mro::get_linear_isa($_[0]);
}
-our $_in_global_destruction = 0;
-END { $_in_global_destruction = 1 }
+sub _install_coderef {
+ *{_getglob($_[0])} = _name_coderef(@_);
+}
+
+sub _name_coderef {
+ shift if @_ > 2; # three args is (target, name, sub)
+ can_haz_subname ? Sub::Name::subname(@_) : $_[1];
+}
sub STANDARD_DESTROY {
my $self = shift;
local $?;
local $@;
eval {
- $self->DEMOLISHALL($_in_global_destruction);
+ $self->DEMOLISHALL(_in_global_destruction);
};
$@;
};
die $e if $e; # rethrow
}
+if (eval { require_module('Devel::GlobalDestruction') }) {
+ *_in_global_destruction = \&Devel::GlobalDestruction::in_global_destruction;
+} elsif (defined ${^GLOBAL_PHASE}) {
+ eval 'sub _in_global_destruction () { ${^GLOBAL_PHASE} eq q[DESTRUCT] }';
+} else {
+ eval <<'PP_IGD' or die $@;
+
+my ($in_global_destruction, $before_is_installed);
+
+sub _in_global_destruction () { $in_global_destruction }
+
+END {
+ # SpeedyCGI runs END blocks every cycle but somehow keeps object instances
+ # hence lying about it seems reasonable...ish
+ $in_global_destruction = 1 unless $CGI::SpeedyCGI::i_am_speedy;
+}
+
+# threads do not execute the global ENDs (it would be stupid). However
+# one can register a new END via simple string eval within a thread, and
+# achieve the same result. A logical place to do this would be CLONE, which
+# is claimed to run in the context of the new thread. However this does
+# not really seem to be the case - any END evaled in a CLONE is ignored :(
+# Hence blatantly hooking threads::create
+
+if ($INC{'threads.pm'}) {
+ my $orig_create = threads->can('create');
+ no warnings 'redefine';
+ *threads::create = sub {
+ { local $@; eval 'END { $in_global_destruction = 1 }' };
+ goto $orig_create;
+ };
+ $before_is_installed = 1;
+}
+
+# just in case threads got loaded after us (silly)
+sub CLONE {
+ unless ($before_is_installed) {
+ require Carp;
+ Carp::croak("You must load the 'threads' module before @{[ __PACKAGE__ ]}");
+ }
+}
+
+1; # keep eval happy
+
+PP_IGD
+
+}
+
1;