- Canonicalize types, type_arguments only when the object is marked as being from the core librarie…

runtime/vm/heap.h

 // 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.
 
 #ifndef VM_HEAP_H_
 #define VM_HEAP_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/flags.h"
@@ skipping 114 matching lines @@
   // traversal through the heap space continues.
   RawInstructions* FindObjectInCodeSpace(FindObjectVisitor* visitor);
   RawInstructions* FindObjectInStubCodeSpace(FindObjectVisitor* visitor);
 
   void CollectGarbage(Space space);
   void CollectGarbage(Space space, ApiCallbacks api_callbacks);
   void CollectAllGarbage();
 
   // Enables growth control on the page space heaps.  This should be
   // called before any user code is executed.
-  void EnableGrowthControl();
+  void EnableGrowthControl() { SetGrowthControlState(true); }
+  void DisableGrowthControl() { SetGrowthControlState(false); }
+  void SetGrowthControlState(bool state);
+  bool GrowthControlState();
 
   // Protect access to the heap.
   void WriteProtect(bool read_only);
 
   // Accessors for inlined allocation in generated code.
   uword TopAddress();
   uword EndAddress();
   static intptr_t new_space_offset() { return OFFSET_OF(Heap, new_space_); }
 
   // Initialize the heap and register it with the isolate.
@@ skipping 121 matching lines @@
 };
 #else  // defined(DEBUG)
 class NoGCScope : public ValueObject {
  public:
   NoGCScope() {}
  private:
   DISALLOW_COPY_AND_ASSIGN(NoGCScope);
 };
 #endif  // defined(DEBUG)
 
+
+class NoHeapGrowthControlScope : public StackResource {
+ public:
+  NoHeapGrowthControlScope();
+  ~NoHeapGrowthControlScope();
+ private:
+  bool current_growth_controller_state_;
+  DISALLOW_COPY_AND_ASSIGN(NoHeapGrowthControlScope);
+};
+
 }  // namespace dart
 
 #endif  // VM_HEAP_H_