blob: b87fb0538b823459c9faddd4392702dc4313f705 [file] [log] [blame]
// 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_GC_SWEEPER_H_
#define VM_GC_SWEEPER_H_
#include "vm/globals.h"
namespace dart {
// Forward declarations.
class FreeList;
class Heap;
class HeapPage;
// The class GCSweeper is used to visit the heap after marking to reclaim unused
// memory.
class GCSweeper {
public:
explicit GCSweeper(Heap* heap) : heap_(heap) {}
~GCSweeper() {}
// Sweep the memory area for the page while clearing the mark bits and adding
// all the unmarked objects to the freelist.
// Returns the size of memory used by the marked objects.
intptr_t SweepPage(HeapPage* page, FreeList* freelist);
intptr_t SweepLargePage(HeapPage* page);
private:
Heap* heap_;
DISALLOW_IMPLICIT_CONSTRUCTORS(GCSweeper);
};
} // namespace dart
#endif // VM_GC_SWEEPER_H_