libstdc++-v3/include/ext/pb_ds/detail/resize_policy/hash_load_check_resize_trigger_size_base.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2016 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