release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/include/c++/4.5.3/ext/pb_ds/detail/resize_policy/hash_standard_resize_policy_imp.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006, 2007, 2008, 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.
  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_standard_resize_policy_imp.hpp
  38  * Contains a resize policy implementation.
  39  */
  40
  41 PB_DS_CLASS_T_DEC
  42 PB_DS_CLASS_C_DEC::
  43 hash_standard_resize_policy()
  44 : m_size(Size_Policy::get_nearest_larger_size(1))
  45 { trigger_policy_base::notify_externally_resized(m_size); }
  46
  47 PB_DS_CLASS_T_DEC
  48 PB_DS_CLASS_C_DEC::
  49 hash_standard_resize_policy(const Size_Policy& r_size_policy)
  50 : Size_Policy(r_size_policy), m_size(Size_Policy::get_nearest_larger_size(1))
  51 { trigger_policy_base::notify_externally_resized(m_size); }
  52
  53 PB_DS_CLASS_T_DEC
  54 PB_DS_CLASS_C_DEC::
  55 hash_standard_resize_policy(const Size_Policy& r_size_policy,
  56                             const Trigger_Policy& r_trigger_policy)
  57 : Size_Policy(r_size_policy), Trigger_Policy(r_trigger_policy),
  58   m_size(Size_Policy::get_nearest_larger_size(1))
  59 { trigger_policy_base::notify_externally_resized(m_size); }
  60
  61 PB_DS_CLASS_T_DEC
  62 PB_DS_CLASS_C_DEC::
  63 ~hash_standard_resize_policy()
  64 { }
  65
  66 PB_DS_CLASS_T_DEC
  67 void
  68 PB_DS_CLASS_C_DEC::
  69 swap(PB_DS_CLASS_C_DEC& other)
  70 {
  71   trigger_policy_base::swap(other);
  72   size_policy_base::swap(other);
  73   std::swap(m_size, other.m_size);
  74 }
  75
  76 PB_DS_CLASS_T_DEC
  77 inline void
  78 PB_DS_CLASS_C_DEC::
  79 notify_find_search_start()
  80 { trigger_policy_base::notify_find_search_start(); }
  81
  82 PB_DS_CLASS_T_DEC
  83 inline void
  84 PB_DS_CLASS_C_DEC::
  85 notify_find_search_collision()
  86 { trigger_policy_base::notify_find_search_collision(); }
  87
  88 PB_DS_CLASS_T_DEC
  89 inline void
  90 PB_DS_CLASS_C_DEC::
  91 notify_find_search_end()
  92 { trigger_policy_base::notify_find_search_end(); }
  93
  94 PB_DS_CLASS_T_DEC
  95 inline void
  96 PB_DS_CLASS_C_DEC::
  97 notify_insert_search_start()
  98 { trigger_policy_base::notify_insert_search_start(); }
  99
 100 PB_DS_CLASS_T_DEC
 101 inline void
 102 PB_DS_CLASS_C_DEC::
 103 notify_insert_search_collision()
 104 { trigger_policy_base::notify_insert_search_collision(); }
 105
 106 PB_DS_CLASS_T_DEC
 107 inline void
 108 PB_DS_CLASS_C_DEC::
 109 notify_insert_search_end()
 110 { trigger_policy_base::notify_insert_search_end(); }
 111
 112 PB_DS_CLASS_T_DEC
 113 inline void
 114 PB_DS_CLASS_C_DEC::
 115 notify_erase_search_start()
 116 { trigger_policy_base::notify_erase_search_start(); }
 117
 118 PB_DS_CLASS_T_DEC
 119 inline void
 120 PB_DS_CLASS_C_DEC::
 121 notify_erase_search_collision()
 122 { trigger_policy_base::notify_erase_search_collision(); }
 123
 124 PB_DS_CLASS_T_DEC
 125 inline void
 126 PB_DS_CLASS_C_DEC::
 127 notify_erase_search_end()
 128 { trigger_policy_base::notify_erase_search_end(); }
 129
 130 PB_DS_CLASS_T_DEC
 131 inline void
 132 PB_DS_CLASS_C_DEC::
 133 notify_inserted(size_type num_e)
 134 { trigger_policy_base::notify_inserted(num_e); }
 135
 136 PB_DS_CLASS_T_DEC
 137 inline void
 138 PB_DS_CLASS_C_DEC::
 139 notify_erased(size_type num_e)
 140 { trigger_policy_base::notify_erased(num_e); }
 141
 142 PB_DS_CLASS_T_DEC
 143 void
 144 PB_DS_CLASS_C_DEC::
 145 notify_cleared()
 146 { trigger_policy_base::notify_cleared(); }
 147
 148 PB_DS_CLASS_T_DEC
 149 inline bool
 150 PB_DS_CLASS_C_DEC::
 151 is_resize_needed() const
 152 { return trigger_policy_base::is_resize_needed(); }
 153
 154 PB_DS_CLASS_T_DEC
 155 typename PB_DS_CLASS_C_DEC::size_type
 156 PB_DS_CLASS_C_DEC::
 157 get_new_size(size_type size, size_type num_used_e) const
 158 {
 159   if (trigger_policy_base::is_grow_needed(size, num_used_e))
 160     return size_policy_base::get_nearest_larger_size(size);
 161   return size_policy_base::get_nearest_smaller_size(size);
 162 }
 163
 164 PB_DS_CLASS_T_DEC
 165 void
 166 PB_DS_CLASS_C_DEC::
 167 notify_resized(size_type new_size)
 168 {
 169   trigger_policy_base::notify_resized(new_size);
 170   m_size = new_size;
 171 }
 172
 173 PB_DS_CLASS_T_DEC
 174 inline typename PB_DS_CLASS_C_DEC::size_type
 175 PB_DS_CLASS_C_DEC::
 176 get_actual_size() const
 177 {
 178   PB_DS_STATIC_ASSERT(access, external_size_access);
 179   return m_size;
 180 }
 181
 182 PB_DS_CLASS_T_DEC
 183 void
 184 PB_DS_CLASS_C_DEC::
 185 resize(size_type new_size)
 186 {
 187   PB_DS_STATIC_ASSERT(access, external_size_access);
 188   size_type actual_size = size_policy_base::get_nearest_larger_size(1);
 189   while (actual_size < new_size)
 190     {
 191       const size_type pot = size_policy_base::get_nearest_larger_size(actual_size);
 192
 193       if (pot == actual_size && pot < new_size)
 194         __throw_resize_error();
 195       actual_size = pot;
 196     }
 197
 198   if (actual_size > 0)
 199     --actual_size;
 200
 201   const size_type old_size = m_size;
 202   __try
 203     {
 204       do_resize(actual_size - 1);
 205     }
 206   __catch(insert_error& )
 207     {
 208       m_size = old_size;
 209       __throw_resize_error();
 210     }
 211   __catch(...)
 212     {
 213       m_size = old_size;
 214       __throw_exception_again;
 215     }
 216 }
 217
 218 PB_DS_CLASS_T_DEC
 219 void
 220 PB_DS_CLASS_C_DEC::
 221 do_resize(size_type)
 222 {
 223   // Do nothing
 224 }
 225
 226 PB_DS_CLASS_T_DEC
 227 Trigger_Policy&
 228 PB_DS_CLASS_C_DEC::
 229 get_trigger_policy()
 230 { return *this; }
 231
 232 PB_DS_CLASS_T_DEC
 233 const Trigger_Policy&
 234 PB_DS_CLASS_C_DEC::
 235 get_trigger_policy() const
 236 { return *this; }
 237
 238 PB_DS_CLASS_T_DEC
 239 Size_Policy&
 240 PB_DS_CLASS_C_DEC::
 241 get_size_policy()
 242 { return *this; }
 243
 244 PB_DS_CLASS_T_DEC
 245 const Size_Policy&
 246 PB_DS_CLASS_C_DEC::
 247 get_size_policy() const
 248 { return *this; }
 249