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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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_SYS_INFO_INTERNAL_H_ | 5 #ifndef BASE_SYS_INFO_INTERNAL_H_ |
6 #define BASE_SYS_INFO_INTERNAL_H_ | 6 #define BASE_SYS_INFO_INTERNAL_H_ |
7 | 7 |
| 8 #include "base/macros.h" |
| 9 |
8 namespace base { | 10 namespace base { |
9 | 11 |
10 namespace internal { | 12 namespace internal { |
11 | 13 |
12 template<typename T, T (*F)(void)> | 14 template<typename T, T (*F)(void)> |
13 class LazySysInfoValue { | 15 class LazySysInfoValue { |
14 public: | 16 public: |
15 LazySysInfoValue() | 17 LazySysInfoValue() |
16 : value_(F()) { } | 18 : value_(F()) { } |
17 | 19 |
18 ~LazySysInfoValue() { } | 20 ~LazySysInfoValue() { } |
19 | 21 |
20 T value() { return value_; } | 22 T value() { return value_; } |
21 | 23 |
22 private: | 24 private: |
23 const T value_; | 25 const T value_; |
24 | 26 |
25 DISALLOW_COPY_AND_ASSIGN(LazySysInfoValue); | 27 DISALLOW_COPY_AND_ASSIGN(LazySysInfoValue); |
26 }; | 28 }; |
27 | 29 |
28 } // namespace internal | 30 } // namespace internal |
29 | 31 |
30 } // namespace base | 32 } // namespace base |
31 | 33 |
32 #endif // BASE_SYS_INFO_INTERNAL_H_ | 34 #endif // BASE_SYS_INFO_INTERNAL_H_ |
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