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/binary_heap_/split_join_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 split_join_fn_imps.hpp
  38  * Contains an implementation class for a binary_heap.
  39  */
  40
  41 PB_DS_CLASS_T_DEC
  42 template<typename Pred>
  43 void
  44 PB_DS_CLASS_C_DEC::
  45 split(Pred pred, PB_DS_CLASS_C_DEC& other)
  46 {
  47   _GLIBCXX_DEBUG_ONLY(assert_valid();)
  48
  49     typedef
  50     typename entry_pred<
  51     value_type,
  52     Pred,
  53     simple_value,
  54     Allocator>::type
  55     pred_t;
  56
  57   const size_type left = partition(pred_t(pred));
  58
  59   _GLIBCXX_DEBUG_ASSERT(m_size >= left);
  60
  61   const size_type ersd = m_size - left;
  62
  63   _GLIBCXX_DEBUG_ASSERT(m_size >= ersd);
  64
  65   const size_type actual_size =
  66     resize_policy::get_new_size_for_arbitrary(left);
  67
  68   const size_type other_actual_size =
  69     other.get_new_size_for_arbitrary(ersd);
  70
  71   entry_pointer a_entries = NULL;
  72   entry_pointer a_other_entries = NULL;
  73
  74   __try
  75     {
  76       a_entries = s_entry_allocator.allocate(actual_size);
  77
  78       a_other_entries = s_entry_allocator.allocate(other_actual_size);
  79     }
  80   __catch(...)
  81     {
  82       if (a_entries != NULL)
  83         s_entry_allocator.deallocate(a_entries, actual_size);
  84
  85       if (a_other_entries != NULL)
  86         s_entry_allocator.deallocate(a_other_entries, other_actual_size);
  87
  88       __throw_exception_again;
  89     };
  90
  91   for (size_type i = 0; i < other.m_size; ++i)
  92     erase_at(other.m_a_entries, i, s_no_throw_copies_ind);
  93
  94   _GLIBCXX_DEBUG_ASSERT(actual_size >= left);
  95   std::copy(m_a_entries, m_a_entries + left, a_entries);
  96   std::copy(m_a_entries + left, m_a_entries + m_size, a_other_entries);
  97
  98   s_entry_allocator.deallocate(m_a_entries, m_actual_size);
  99   s_entry_allocator.deallocate(other.m_a_entries, other.m_actual_size);
 100
 101   m_actual_size = actual_size;
 102   other.m_actual_size = other_actual_size;
 103
 104   m_size = left;
 105   other.m_size = ersd;
 106
 107   m_a_entries = a_entries;
 108   other.m_a_entries = a_other_entries;
 109
 110   std::make_heap(m_a_entries, m_a_entries + m_size, static_cast<entry_cmp& >(*this));
 111   std::make_heap(other.m_a_entries, other.m_a_entries + other.m_size, static_cast<entry_cmp& >(other));
 112
 113   resize_policy::notify_arbitrary(m_actual_size);
 114   other.notify_arbitrary(other.m_actual_size);
 115
 116   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 117     _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
 118     }
 119
 120 PB_DS_CLASS_T_DEC
 121 inline void
 122 PB_DS_CLASS_C_DEC::
 123 join(PB_DS_CLASS_C_DEC& other)
 124 {
 125   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 126   _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
 127
 128   const size_type len = m_size + other.m_size;
 129   const size_type actual_size = resize_policy::get_new_size_for_arbitrary(len);
 130
 131   entry_pointer a_entries = NULL;
 132   entry_pointer a_other_entries = NULL;
 133
 134   __try
 135     {
 136       a_entries = s_entry_allocator.allocate(actual_size);
 137       a_other_entries = s_entry_allocator.allocate(resize_policy::min_size);
 138     }
 139   __catch(...)
 140     {
 141       if (a_entries != NULL)
 142         s_entry_allocator.deallocate(a_entries, actual_size);
 143
 144       if (a_other_entries != NULL)
 145         s_entry_allocator.deallocate(a_other_entries, resize_policy::min_size);
 146
 147       __throw_exception_again;
 148     }
 149
 150   std::copy(m_a_entries, m_a_entries + m_size, a_entries);
 151   std::copy(other.m_a_entries, other.m_a_entries + other.m_size, a_entries + m_size);
 152
 153   s_entry_allocator.deallocate(m_a_entries, m_actual_size);
 154   m_a_entries = a_entries;
 155   m_size = len;
 156   m_actual_size = actual_size;
 157
 158   resize_policy::notify_arbitrary(actual_size);
 159
 160   std::make_heap(m_a_entries, m_a_entries + m_size, static_cast<entry_cmp& >(*this));
 161
 162   s_entry_allocator.deallocate(other.m_a_entries, other.m_actual_size);
 163   other.m_a_entries = a_other_entries;
 164   other.m_size = 0;
 165   other.m_actual_size = resize_policy::min_size;
 166
 167   other.notify_arbitrary(resize_policy::min_size);
 168
 169   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 170   _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
 171 }
 172