OLD | NEW |
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/basictypes.h" | |
9 | |
10 namespace base { | 8 namespace base { |
11 | 9 |
12 namespace internal { | 10 namespace internal { |
13 | 11 |
14 template<typename T, T (*F)(void)> | 12 template<typename T, T (*F)(void)> |
15 class LazySysInfoValue { | 13 class LazySysInfoValue { |
16 public: | 14 public: |
17 LazySysInfoValue() | 15 LazySysInfoValue() |
18 : value_(F()) { } | 16 : value_(F()) { } |
19 | 17 |
20 ~LazySysInfoValue() { } | 18 ~LazySysInfoValue() { } |
21 | 19 |
22 T value() { return value_; } | 20 T value() { return value_; } |
23 | 21 |
24 private: | 22 private: |
25 const T value_; | 23 const T value_; |
26 | 24 |
27 DISALLOW_COPY_AND_ASSIGN(LazySysInfoValue); | 25 DISALLOW_COPY_AND_ASSIGN(LazySysInfoValue); |
28 }; | 26 }; |
29 | 27 |
30 } // namespace internal | 28 } // namespace internal |
31 | 29 |
32 } // namespace base | 30 } // namespace base |
33 | 31 |
34 #endif // BASE_SYS_INFO_INTERNAL_H_ | 32 #endif // BASE_SYS_INFO_INTERNAL_H_ |
OLD | NEW |