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/macros.h" 9 10 namespace base { 11 12 namespace internal { 13 14 template<typename T, T (*F)(void)> 15 class LazySysInfoValue { 16 public: LazySysInfoValue()17 LazySysInfoValue() 18 : value_(F()) { } 19 ~LazySysInfoValue()20 ~LazySysInfoValue() { } 21 value()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_ 35