1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef BASE_MEMORY_DISCARDABLE_MEMORY_MALLOC_H_
6#define BASE_MEMORY_DISCARDABLE_MEMORY_MALLOC_H_
7
8#include "base/memory/discardable_memory.h"
9
10namespace base {
11namespace internal {
12
13class DiscardableMemoryMalloc : public DiscardableMemory {
14 public:
15  explicit DiscardableMemoryMalloc(size_t size);
16  virtual ~DiscardableMemoryMalloc();
17
18  bool Initialize();
19
20  // Overridden from DiscardableMemory:
21  virtual DiscardableMemoryLockStatus Lock() OVERRIDE;
22  virtual void Unlock() OVERRIDE;
23  virtual void* Memory() const OVERRIDE;
24
25 private:
26  scoped_ptr<uint8, FreeDeleter> memory_;
27  const size_t size_;
28
29  DISALLOW_COPY_AND_ASSIGN(DiscardableMemoryMalloc);
30};
31
32}  // namespace internal
33}  // namespace base
34
35#endif  // BASE_MEMORY_DISCARDABLE_MEMORY_MALLOC_H_
36