1f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Copyright 2013 The Chromium Authors. All rights reserved.
2f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be
3f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// found in the LICENSE file.
4f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
5f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#ifndef BASE_SYS_INFO_INTERNAL_H_
6f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#define BASE_SYS_INFO_INTERNAL_H_
7f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
8f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "base/basictypes.h"
9f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
10f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)namespace base {
11f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
12f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)namespace internal {
13f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
14f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)template<typename T, T (*F)(void)>
15f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)class LazySysInfoValue {
16f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) public:
17f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)  LazySysInfoValue()
18f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)      : value_(F()) { }
19f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
20f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)  ~LazySysInfoValue() { }
21f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
22f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)  T value() { return value_; }
23f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
24f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) private:
25f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)  const T value_;
26f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
27f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)  DISALLOW_COPY_AND_ASSIGN(LazySysInfoValue);
28f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)};
29f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
30f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)}  // namespace internal
31f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
32f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)}  // namespace base
33f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)
34f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#endif  // BASE_SYS_INFO_INTERNAL_H_
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