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/gp_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 gp_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 n)
  56 { resize_imp(resize_base::get_nearest_larger_size(n)); }
  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 #ifdef PB_DS_REGRESSION
  82   typename Allocator::group_adjustor adjust(m_num_e);
  83 #endif
  84
  85   if (new_size == m_num_e)
  86     return;
  87
  88   _GLIBCXX_DEBUG_ONLY(assert_valid();)
  89   const size_type old_size = m_num_e;
  90   entry_array a_entries_resized = NULL;
  91
  92   // Following line might throw an exception.
  93   a_entries_resized = s_entry_allocator.allocate(new_size);
  94
  95   ranged_probe_fn_base::notify_resized(new_size);
  96   m_num_e = new_size;
  97
  98   for (size_type i = 0; i < m_num_e; ++i)
  99     a_entries_resized[i].m_stat = empty_entry_status;
 100
 101   __try
 102     {
 103       resize_imp(a_entries_resized, old_size);
 104     }
 105   __catch(...)
 106     {
 107       erase_all_valid_entries(a_entries_resized, new_size);
 108       m_num_e = old_size;
 109       s_entry_allocator.deallocate(a_entries_resized, new_size);
 110       ranged_probe_fn_base::notify_resized(old_size);
 111       __throw_exception_again;
 112     }
 113
 114   // At this point no exceptions can be thrown.
 115   _GLIBCXX_DEBUG_ONLY(assert_entry_array_valid(a_entries_resized, traits_base::m_store_extra_indicator);)
 116
 117   Resize_Policy::notify_resized(new_size);
 118   erase_all_valid_entries(m_entries, old_size);
 119   s_entry_allocator.deallocate(m_entries, old_size);
 120   m_entries = a_entries_resized;
 121   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 122 }
 123
 124 PB_DS_CLASS_T_DEC
 125 void
 126 PB_DS_CLASS_C_DEC::
 127 resize_imp(entry_array a_entries_resized, size_type old_size)
 128 {
 129   for (size_type pos = 0; pos < old_size; ++pos)
 130     if (m_entries[pos].m_stat == valid_entry_status)
 131       resize_imp_reassign(m_entries + pos, a_entries_resized,
 132                           traits_base::m_store_extra_indicator);
 133 }
 134
 135 #include <ext/pb_ds/detail/gp_hash_table_map_/resize_no_store_hash_fn_imps.hpp>
 136 #include <ext/pb_ds/detail/gp_hash_table_map_/resize_store_hash_fn_imps.hpp>
 137