From: Matt S Trout <mst@shadowcat.co.uk>
Date: Mon, 14 May 2012 20:29:52 +0000 (+0000)
Subject: inline Devel::GlobalDestruction pure perl code temporarily
X-Git-Tag: v0.091005~3
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=19e0e7494654a7aa180272206fc8581f7030e0cb;p=gitmo%2FMoo.git

inline Devel::GlobalDestruction pure perl code temporarily
---

diff --git a/Changes b/Changes
index 215507d..4962303 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,5 @@
+  - temporary switch to an inlined in_global_destruction to avoid needing
+    to fatpack Sub::Exporter for features we don't use
   - a weakened value should still be returned on set (fixes lazy + weak_ref)
   - add an explicit return to all exported subs so people don't accidentally
     rely on the return value
diff --git a/Makefile.PL b/Makefile.PL
index e9e9562..86745bc 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -14,7 +14,6 @@ my %RUN_DEPS = (
   'strictures' => 1.001001,
   'Module::Runtime' => 0.013,
   'Role::Tiny' => 1.001001,
-  'Devel::GlobalDestruction' => '0.05',
 );
 
 # have to do this since old EUMM dev releases miss the eval $VERSION line
diff --git a/lib/Method/Generate/DemolishAll.pm b/lib/Method/Generate/DemolishAll.pm
index 3d499cc..5d45656 100644
--- a/lib/Method/Generate/DemolishAll.pm
+++ b/lib/Method/Generate/DemolishAll.pm
@@ -21,7 +21,7 @@ sub generate_method {
       local $@;
       require Moo::_Utils;
       eval {
-        $self->DEMOLISHALL(Devel::GlobalDestruction::in_global_destruction);
+        $self->DEMOLISHALL(Moo::_Utils::_in_global_destruction);
       };
       $@;
     };
diff --git a/lib/Moo/_Utils.pm b/lib/Moo/_Utils.pm
index 34aad9a..7c2a8f8 100644
--- a/lib/Moo/_Utils.pm
+++ b/lib/Moo/_Utils.pm
@@ -10,15 +10,17 @@ use constant can_haz_subname => eval { require Sub::Name };
 
 use strictures 1;
 use Module::Runtime qw(require_module);
-use Devel::GlobalDestruction;
 use base qw(Exporter);
 use Moo::_mro;
 
 our @EXPORT = qw(
     _getglob _install_modifier _load_module _maybe_load_module
     _get_linear_isa _getstash _install_coderef _name_coderef
+    _in_global_destruction
 );
 
+sub _in_global_destruction;
+
 sub _install_modifier {
   my ($into, $type, $name, $code) = @_;
 
@@ -78,7 +80,7 @@ sub STANDARD_DESTROY {
     local $?;
     local $@;
     eval {
-      $self->DEMOLISHALL(in_global_destruction);
+      $self->DEMOLISHALL(_in_global_destruction);
     };
     $@;
   };
@@ -87,4 +89,50 @@ sub STANDARD_DESTROY {
   die $e if $e; # rethrow
 }
 
+if (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;
diff --git a/lib/Moo/sification.pm b/lib/Moo/sification.pm
index 2f94663..baf4c52 100644
--- a/lib/Moo/sification.pm
+++ b/lib/Moo/sification.pm
@@ -1,12 +1,12 @@
 package Moo::sification;
 
 use strictures 1;
-use Devel::GlobalDestruction;
+use Moo::_Utils ();
 
 sub unimport { our $disarmed = 1 }
 
 sub Moo::HandleMoose::AuthorityHack::DESTROY {
-  unless (our $disarmed or in_global_destruction) {
+  unless (our $disarmed or Moo::_Utils::_in_global_destruction) {
     require Moo::HandleMoose;
     Moo::HandleMoose->import;
   }