libstdc++

hash_load_check_resize_trigger_size_base.hpp
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1 // -*- C++ -*-
2
3 // Copyright (C) 2005-2013 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.
10
11 // This library is distributed in the hope that it will be useful, but
12 // WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // General Public License for more details.
15
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.
19
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
24
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
26
27 // Permission to use, copy, modify, sell, and distribute this software
28 // is hereby granted without fee, provided that the above copyright
29 // notice appears in all copies, and that both that copyright notice
30 // and this permission notice appear in supporting documentation. None
31 // of the above authors, nor IBM Haifa Research Laboratories, make any
32 // representation about the suitability of this software for any
33 // purpose. It is provided "as is" without express or implied
34 // warranty.
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