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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_ | 5 #ifndef BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_ |
6 #define BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_ | 6 #define BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_ |
7 | 7 |
| 8 #include <stddef.h> |
| 9 |
8 #include "base/base_export.h" | 10 #include "base/base_export.h" |
9 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
10 | 12 |
11 namespace base { | 13 namespace base { |
12 class DiscardableMemory; | 14 class DiscardableMemory; |
13 | 15 |
14 class BASE_EXPORT DiscardableMemoryAllocator { | 16 class BASE_EXPORT DiscardableMemoryAllocator { |
15 public: | 17 public: |
16 // Returns the allocator instance. | 18 // Returns the allocator instance. |
17 static DiscardableMemoryAllocator* GetInstance(); | 19 static DiscardableMemoryAllocator* GetInstance(); |
18 | 20 |
19 // Sets the allocator instance. Can only be called once, e.g. on startup. | 21 // Sets the allocator instance. Can only be called once, e.g. on startup. |
20 // Ownership of |instance| remains with the caller. | 22 // Ownership of |instance| remains with the caller. |
21 static void SetInstance(DiscardableMemoryAllocator* allocator); | 23 static void SetInstance(DiscardableMemoryAllocator* allocator); |
22 | 24 |
23 virtual scoped_ptr<DiscardableMemory> AllocateLockedDiscardableMemory( | 25 virtual scoped_ptr<DiscardableMemory> AllocateLockedDiscardableMemory( |
24 size_t size) = 0; | 26 size_t size) = 0; |
25 | 27 |
26 protected: | 28 protected: |
27 virtual ~DiscardableMemoryAllocator() {} | 29 virtual ~DiscardableMemoryAllocator() {} |
28 }; | 30 }; |
29 | 31 |
30 } // namespace base | 32 } // namespace base |
31 | 33 |
32 #endif // BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_ | 34 #endif // BASE_MEMORY_DISCARDABLE_MEMORY_ALLOCATOR_H_ |
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