resize_fn_imps.hpp

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// -*- C++ -*-

// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.

// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice and
// this permission notice appear in supporting documentation. None of
// the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied warranty.

PB_ASSOC_CLASS_T_DEC
inline bool
PB_ASSOC_CLASS_C_DEC::
do_resize_if_needed()
{
  if (!my_resize_base::is_resize_needed())
    return (false);

  do
    do_resize(my_resize_base::get_new_size(m_num_e_p, m_num_used_e));
  while (my_resize_base::is_resize_needed());

  return (true);
}

PB_ASSOC_CLASS_T_DEC
inline void
PB_ASSOC_CLASS_C_DEC::
do_resize_if_needed_no_throw()
{
  if (!my_resize_base::is_resize_needed())
    return;

  try
    {
      do
    do_resize(my_resize_base::get_new_size(m_num_e_p, m_num_used_e));
      while (my_resize_base::is_resize_needed());
    }
  catch(...)
    { }

  PB_ASSOC_DBG_ONLY(assert_valid();)
    }

PB_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
do_resize(size_type new_size)
{
  PB_ASSOC_DBG_ONLY(assert_valid();)

    const size_type old_size = m_num_e_p;

  entry_pointer_array a_p_entries_resized;

  // Following line might throw an exception.

  my_ranged_hash_fn_base::notify_resized(new_size);

  try
    {
      // Following line might throw an exception.

      a_p_entries_resized = s_entry_pointer_allocator.allocate(new_size);

      m_num_e_p = new_size;
    }
  catch(...)
    {
      my_ranged_hash_fn_base::notify_resized(old_size);

      throw;
    }

  // At this point no exceptions can be thrown.

  resize_imp_no_exceptions(new_size, a_p_entries_resized, old_size);

  Resize_Policy::notify_resized(new_size);

  PB_ASSOC_DBG_ONLY(assert_valid();)
    }

PB_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
resize_imp_no_exceptions(size_type new_size, entry_pointer_array a_p_entries_resized, size_type old_size)
{
  std::fill(a_p_entries_resized, a_p_entries_resized + m_num_e_p,(entry_pointer)NULL);

  for (size_type pos = 0; pos < old_size; ++pos)
    {
      entry_pointer p_e = m_a_p_entries[pos];

      while (p_e != NULL)
    p_e = resize_imp_no_exceptions_reassign_pointer(p_e, a_p_entries_resized, my_hash_traits_base::s_store_hash_indicator);
    }

  m_num_e_p = new_size;

  PB_ASSOC_DBG_ONLY(assert_entry_pointer_array_valid(a_p_entries_resized);)

    s_entry_pointer_allocator.deallocate(m_a_p_entries, old_size);

  m_a_p_entries = a_p_entries_resized;

  PB_ASSOC_DBG_ONLY(assert_valid();)
    }

#include <ext/pb_assoc/detail/cc_ht_map_/resize_no_store_hash_fn_imps.hpp>
#include <ext/pb_assoc/detail/cc_ht_map_/resize_store_hash_fn_imps.hpp>

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