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/cc_hash_table_map_/resize_fn_imps.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 resize_fn_imps.hpp
  38  * Contains implementations of cc_ht_map_'s resize related functions.
  39  */
  40
  41 PB_DS_CLASS_T_DEC
  42 inline bool
  43 PB_DS_CLASS_C_DEC::
  44 do_resize_if_needed()
  45 {
  46   if (!resize_base::is_resize_needed())
  47     return false;
  48   resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e));
  49   return true;
  50 }
  51
  52 PB_DS_CLASS_T_DEC
  53 void
  54 PB_DS_CLASS_C_DEC::
  55 do_resize(size_type len)
  56 { resize_imp(resize_base::get_nearest_larger_size(len)); }
  57
  58 PB_DS_CLASS_T_DEC
  59 inline void
  60 PB_DS_CLASS_C_DEC::
  61 do_resize_if_needed_no_throw()
  62 {
  63   if (!resize_base::is_resize_needed())
  64     return;
  65
  66   __try
  67     {
  68       resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e));
  69     }
  70   __catch(...)
  71     { }
  72
  73   _GLIBCXX_DEBUG_ONLY(assert_valid();)
  74 }
  75
  76 PB_DS_CLASS_T_DEC
  77 void
  78 PB_DS_CLASS_C_DEC::
  79 resize_imp(size_type new_size)
  80 {
  81   _GLIBCXX_DEBUG_ONLY(assert_valid();)
  82   if (new_size == m_num_e)
  83     return;
  84
  85   const size_type old_size = m_num_e;
  86   entry_pointer_array a_p_entries_resized;
  87
  88   // Following line might throw an exception.
  89   ranged_hash_fn_base::notify_resized(new_size);
  90
  91   __try
  92     {
  93       // Following line might throw an exception.
  94       a_p_entries_resized = s_entry_pointer_allocator.allocate(new_size);
  95       m_num_e = new_size;
  96     }
  97   __catch(...)
  98     {
  99       ranged_hash_fn_base::notify_resized(old_size);
 100       __throw_exception_again;
 101     }
 102
 103   // At this point no exceptions can be thrown.
 104   resize_imp_no_exceptions(new_size, a_p_entries_resized, old_size);
 105   Resize_Policy::notify_resized(new_size);
 106   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 107 }
 108
 109 PB_DS_CLASS_T_DEC
 110 void
 111 PB_DS_CLASS_C_DEC::
 112 resize_imp_no_exceptions(size_type new_size, entry_pointer_array a_p_entries_resized, size_type old_size)
 113 {
 114   std::fill(a_p_entries_resized, a_p_entries_resized + m_num_e,
 115             entry_pointer(NULL));
 116
 117   for (size_type pos = 0; pos < old_size; ++pos)
 118     {
 119       entry_pointer p_e = m_entries[pos];
 120       while (p_e != NULL)
 121         p_e = resize_imp_no_exceptions_reassign_pointer(p_e, a_p_entries_resized,  traits_base::m_store_extra_indicator);
 122     }
 123
 124   m_num_e = new_size;
 125   _GLIBCXX_DEBUG_ONLY(assert_entry_pointer_array_valid(a_p_entries_resized);)
 126   s_entry_pointer_allocator.deallocate(m_entries, old_size);
 127   m_entries = a_p_entries_resized;
 128   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 129 }
 130
 131 #include <ext/pb_ds/detail/cc_hash_table_map_/resize_no_store_hash_fn_imps.hpp>
 132 #include <ext/pb_ds/detail/cc_hash_table_map_/resize_store_hash_fn_imps.hpp>
 133