base/sys_info_internal.h

// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef BASE_SYS_INFO_INTERNAL_H_
#define BASE_SYS_INFO_INTERNAL_H_

#include "base/macros.h"

namespace base {

namespace internal {

template<typename T, T (*F)(void)>
class LazySysInfoValue {
 public:
  LazySysInfoValue()
      : value_(F()) { }

  ~LazySysInfoValue() = default;

  T value() { return value_; }

 private:
  const T value_;

  DISALLOW_COPY_AND_ASSIGN(LazySysInfoValue);
};

}  // namespace internal

}  // namespace base

#endif  // BASE_SYS_INFO_INTERNAL_H_