base/sys_info_internal.h

   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_