libstdc++
hash_load_check_resize_trigger_size_base.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the terms
7 // of the GNU General Public License as published by the Free Software
8 // Foundation; either version 3, or (at your option) any later
9 // version.
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11 // This library is distributed in the hope that it will be useful, but
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16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
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25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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35 
36 /**
37  * @file hash_load_check_resize_trigger_size_base.hpp
38  * Contains an base holding size for some resize policies.
39  */
40 
41 #ifndef PB_DS_HASH_LOAD_CHECK_RESIZE_TRIGGER_SIZE_BASE_HPP
42 #define PB_DS_HASH_LOAD_CHECK_RESIZE_TRIGGER_SIZE_BASE_HPP
43 
44 namespace __gnu_pbds
45 {
46  namespace detail
47  {
48  /// Primary template.
49  template<typename Size_Type, bool Hold_Size>
50  class hash_load_check_resize_trigger_size_base;
51 
52  /// Specializations.
53  template<typename Size_Type>
54  class hash_load_check_resize_trigger_size_base<Size_Type, true>
55  {
56  protected:
57  typedef Size_Type size_type;
58 
59  hash_load_check_resize_trigger_size_base(): m_size(0)
60  { }
61 
62  inline void
63  swap(hash_load_check_resize_trigger_size_base& other)
64  { std::swap(m_size, other.m_size); }
65 
66  inline void
67  set_size(size_type size)
68  { m_size = size; }
69 
70  inline size_type
71  get_size() const
72  { return m_size; }
73 
74  private:
75  size_type m_size;
76  };
77 
78  template<typename Size_Type>
79  class hash_load_check_resize_trigger_size_base<Size_Type, false>
80  {
81  protected:
82  typedef Size_Type size_type;
83 
84  protected:
85  inline void
86  swap(hash_load_check_resize_trigger_size_base& other) { }
87 
88  inline void
89  set_size(size_type size) { }
90  };
91  } // namespace detail
92 } // namespace __gnu_pbds
93 
94 #endif