Change the leaktracer to no longer rely on %Sub::Quote::QUOTED

[dbsrgits/DBIx-Class.git] / t / lib / DBICTest / Util / LeakTracer.pm

diff --git a/t/lib/DBICTest/Util/LeakTracer.pm b/t/lib/DBICTest/Util/LeakTracer.pm
index 447d0ec..b36843e 100644 (file)
--- a/t/lib/DBICTest/Util/LeakTracer.pm
+++ b/t/lib/DBICTest/Util/LeakTracer.pm
@@ -3,14 +3,20 @@ package DBICTest::Util::LeakTracer;
 use warnings;
 use strict;
 
+use ANFANG;
 use Carp;
 use Scalar::Util qw(isweak weaken blessed reftype);
-use DBIx::Class::_Util qw(refcount hrefaddr refdesc);
-use DBIx::Class::Optional::Dependencies;
-use Data::Dumper::Concise;
-use DBICTest::Util qw( stacktrace visit_namespaces );
+use DBIx::Class::_Util qw(refcount hrefaddr refdesc dump_value visit_namespaces);
+use DBICTest::RunMode;
+use DBICTest::Util 'stacktrace';
 use constant {
-  CV_TRACING => !DBICTest::RunMode->is_plain && DBIx::Class::Optional::Dependencies->req_ok_for ('test_leaks_heavy'),
+  CV_TRACING => !!(
+    !DBICTest::RunMode->is_plain
+      &&
+    require DBIx::Class::Optional::Dependencies
+      &&
+    DBIx::Class::Optional::Dependencies->req_ok_for ('test_leaks_heavy')
+  ),
 };
 
 use base 'Exporter';
@@ -42,17 +48,23 @@ sub populate_weakregistry {
       for keys %$reg;
   }
 
+  return $target if (
+    DBIx::Class::_ENV_::BROKEN_WEAK_SCALARREF_VALUES
+      and
+    ref $target eq 'SCALAR'
+  );
+
   if (! defined $weak_registry->{$refaddr}{weakref}) {
+
+    # replace slot entirely
     $weak_registry->{$refaddr} = {
       stacktrace => stacktrace(1),
       weakref => $target,
     };
 
-    # on perl < 5.8.3 sometimes a weaken can throw (can't find RT)
-    # so guard against that unlikely event
-    local $@;
-    eval { weaken( $weak_registry->{$refaddr}{weakref} ); $refs_traced++ }
-      or delete $weak_registry->{$refaddr};
+    weaken( $weak_registry->{$refaddr}{weakref} );
+
+    $refs_traced++;
   }
 
   my $desc = refdesc $target;
@@ -66,7 +78,7 @@ sub populate_weakregistry {
 }
 
 # Regenerate the slots names on a thread spawn
-sub CLONE {
+sub DBICTest::__LeakTracer_iThreads_handler__::CLONE {
   my @individual_regs = grep { scalar keys %{$_||{}} } values %reg_of_regs;
   %reg_of_regs = ();
 
@@ -90,6 +102,11 @@ sub CLONE {
       $reg->{$new_addr} = $slot_info;
     }
   }
+
+  # Dummy NEXTSTATE ensuring the all temporaries on the stack are garbage
+  # collected before leaving this scope. Depending on the code above, this
+  # may very well be just a preventive measure guarding future modifications
+  undef;
 }
 
 sub visit_refs {
@@ -122,6 +139,7 @@ sub visit_refs {
 
     my $type = reftype $r;
 
+    local $SIG{__DIE__} if $SIG{__DIE__};
     local $@;
     eval {
       if ($type eq 'HASH') {
@@ -207,7 +225,7 @@ sub assert_empty_weakregistry {
   # in case we hooked bless any extra object creation will wreak
   # havoc during the assert phase
   local *CORE::GLOBAL::bless;
-  *CORE::GLOBAL::bless = sub { CORE::bless( $_[0], (@_ > 1) ? $_[1] : caller() ) };
+  *CORE::GLOBAL::bless = sub { CORE::bless( $_[0], (@_ > 1) ? $_[1] : CORE::caller() ) };
 
   croak 'Expecting a registry hashref' unless ref $weak_registry eq 'HASH';
 
@@ -232,13 +250,13 @@ sub assert_empty_weakregistry {
 
   # the symtable walk is very expensive
   # if we are $quiet (running in an END block) we do not really need to be
-  # that thorough - can get by with only %Sub::Quote::QUOTED
+  # that thorough - can get by with our own registry
   delete $weak_registry->{$_} for $quiet
     ? do {
       my $refs = {};
       visit_refs (
         # only look at the closed over stuffs
-        refs => [ grep { length ref $_ } map { values %{$_->[2]} } grep { ref $_ eq 'ARRAY' } values %Sub::Quote::QUOTED ],
+        refs => [ values %DBIx::Class::_Util::refs_closed_over_by_quote_sub_installed_crefs ],
         seen_refs => $refs,
         action => sub { 1 },
       );
@@ -266,7 +284,7 @@ sub assert_empty_weakregistry {
           ref($weak_registry->{$addr}{weakref}) eq 'CODE'
             and
           B::svref_2object($weak_registry->{$addr}{weakref})->XSUB
-        ) ? '__XSUB__' : Dumper( $weak_registry->{$addr}{weakref} )
+        ) ? '__XSUB__' : dump_value $weak_registry->{$addr}{weakref}
       ;
     };
 
@@ -299,7 +317,7 @@ sub assert_empty_weakregistry {
   }
 
   if (! $quiet and !$leaks_found and ! $tb->in_todo) {
-    $tb->ok(1, sprintf "No leaks found at %s line %d", (caller())[1,2] );
+    $tb->ok(1, sprintf "No leaks found at %s line %d", (CORE::caller())[1,2] );
   }
 }