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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef BASE_SYS_INFO_INTERNAL_H_ | |
| 6 #define BASE_SYS_INFO_INTERNAL_H_ | |
| 7 | |
| 8 #include "base/basictypes.h" | |
| 9 | |
| 10 namespace base { | |
| 11 | |
| 12 namespace internal { | |
| 13 | |
| 14 template<typename T, T (*F)(void)> | |
| 15 class LazySysInfoValue { | |
| 16 public: | |
| 17 LazySysInfoValue() | |
| 18 : value_(F()) { } | |
| 19 | |
| 20 ~LazySysInfoValue() { } | |
| 21 | |
| 22 T value() { return value_; } | |
| 23 | |
| 24 private: | |
| 25 const T value_; | |
| 26 | |
| 27 DISALLOW_COPY_AND_ASSIGN(LazySysInfoValue); | |
| 28 }; | |
| 29 | |
| 30 } // namespace internal | |
| 31 | |
| 32 } // namespace base | |
| 33 | |
| 34 #endif // BASE_SYS_INFO_INTERNAL_H_ | |
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