Cleanup handles more efficiently, ensures we don't have to iterate over them

runtime/vm/class_finalizer.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/class_finalizer.h"
 
 #include "vm/flags.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
 #include "vm/longjump.h"
@@ skipping 93 matching lines @@
 }
 
 
 // Class finalization occurs:
 // a) when bootstrap process completes (VerifyBootstrapClasses).
 // b) after the user classes are loaded (dart_api).
 bool ClassFinalizer::FinalizePendingClasses() {
   bool retval = true;
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);
+  HANDLESCOPE(isolate);
   ObjectStore* object_store = isolate->object_store();
   const Error& error = Error::Handle(object_store->sticky_error());
   if (!error.IsNull()) {
     return false;
   }
   if (AllClassesFinalized()) {
     return true;
   }
 
   GrowableArray<intptr_t> added_subclasses_to_cids;
@@ skipping 39 matching lines @@
     RemoveOptimizedCode(added_subclasses_to_cids);
   }
   return retval;
 }
 
 
 // Adds all interfaces of cls into 'collected'. Duplicate entries may occur.
 // No cycles are allowed.
 void ClassFinalizer::CollectInterfaces(const Class& cls,
                                        const GrowableObjectArray& collected) {
-  const Array& interface_array = Array::ZoneHandle(cls.interfaces());
+  const Array& interface_array = Array::Handle(cls.interfaces());
   AbstractType& interface = AbstractType::Handle();
   Class& interface_class = Class::Handle();
   for (intptr_t i = 0; i < interface_array.Length(); i++) {
     interface ^= interface_array.At(i);
     interface_class = interface.type_class();
     collected.Add(interface_class);
     CollectInterfaces(interface_class, collected);
   }
 }
 
@@ skipping 1392 matching lines @@
 void ClassFinalizer::ReportError(const char* format, ...) {
   va_list args;
   va_start(args, format);
   const Error& error = Error::Handle(
       Parser::FormatError(Script::Handle(), -1, "Error", format, args));
   va_end(args);
   ReportError(error);
 }
 
 }  // namespace dart