- Add and enable concurrent sweeper.

runtime/vm/raw_object.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/raw_object.h"
 
 #include "vm/class_table.h"
 #include "vm/dart.h"
 #include "vm/freelist.h"
 #include "vm/isolate.h"
@@ skipping 41 matching lines @@
 }
 
 
 intptr_t RawObject::SizeFromClass() const {
   Isolate* isolate = Isolate::Current();
   NoHandleScope no_handles(isolate);
 
   // Only reasonable to be called on heap objects.
   ASSERT(IsHeapObject());
 
-  RawClass* raw_class = isolate->class_table()->At(GetClassId());
+  intptr_t class_id = GetClassId();
+  RawClass* raw_class = isolate->class_table()->At(class_id);
+  ASSERT(raw_class->ptr()->id_ == class_id);
+
+  // Get the instance size out of the class.
   intptr_t instance_size =
       raw_class->ptr()->instance_size_in_words_ << kWordSizeLog2;
-  intptr_t class_id = raw_class->ptr()->id_;
 
   if (instance_size == 0) {
     switch (class_id) {
       case kCodeCid: {
         const RawCode* raw_code = reinterpret_cast<const RawCode*>(this);
         intptr_t pointer_offsets_length =
             raw_code->ptr()->pointer_offsets_length_;
         instance_size = Code::InstanceSize(pointer_offsets_length);
         break;
       }
@@ skipping 812 matching lines @@
 intptr_t RawUserTag::VisitUserTagPointers(
     RawUserTag* raw_obj, ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return UserTag::InstanceSize();
 }
 
 
 }  // namespace dart