iposva@google.com
5e1e9534db
Review URL: http://codereview.chromium.org//8898034 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@2485 260f80e4-7a28-3924-810f-c04153c831b5
40 lines
984 B
C++
40 lines
984 B
C++
// 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_
|