- Promote objects from new gen to old space if they survived a scavenge.

vm/pages.h

 // Copyright (c) 2011, 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_PAGES_H_
 #define VM_PAGES_H_
 
 #include "vm/freelist.h"
 #include "vm/globals.h"
 #include "vm/virtual_memory.h"
@@ skipping 85 matching lines @@
 
  private:
   static const intptr_t kAllocatablePageSize = kPageSize - sizeof(HeapPage);
 
   void AllocatePage();
   HeapPage* AllocateLargePage(intptr_t size);
   void FreeLargePage(HeapPage* page, HeapPage* previous_page);
   void FreePages(HeapPage* pages);
 
   static intptr_t LargePageSizeFor(intptr_t size);
   bool CanIncreaseCapacity(intptr_t increase) {

[siva, 2011/12/22 23:48:38]

Why did you remove the assert why not change to:
ASSERT(capacity_ <= max_capacity_);

[Ivan Posva, 2011/12/23 00:12:06]

Assertion adjusted.

-    ASSERT(capacity_ < max_capacity_);
     return increase <= (max_capacity_ - capacity_);
   }
 
   uword TryBumpAllocate(intptr_t size);
 
   FreeList freelist_;
 
   Heap* heap_;
 
   HeapPage* pages_;
@@ skipping 12 matching lines @@
 
   // Keep track whether a MarkSweep is currently running.
   bool sweeping_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(PageSpace);
 };
 
 }  // namespace dart
 
 #endif  // VM_PAGES_H_