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 10namespace base { 11 12namespace internal { 13 14template<typename T, T (*F)(void)> 15class 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_ 35