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// -*- C++ -*-
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// Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Permission to use, copy, modify, sell, and distribute this software
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// is hereby granted without fee, provided that the above copyright
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// notice appears in all copies, and that both that copyright notice
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// and this permission notice appear in supporting documentation. None
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// representation about the suitability of this software for any
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// purpose. It is provided "as is" without express or implied
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// warranty.
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/**
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* @file resize_fn_imps.hpp
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* Contains implementations of cc_ht_map_'s resize related functions.
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*/
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PB_DS_CLASS_T_DEC
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inline bool
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PB_DS_CLASS_C_DEC::
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do_resize_if_needed()
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{
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if (!resize_base::is_resize_needed())
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return false;
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resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e));
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return true;
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}
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PB_DS_CLASS_T_DEC
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void
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PB_DS_CLASS_C_DEC::
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do_resize(size_type len)
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{ resize_imp(resize_base::get_nearest_larger_size(len)); }
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PB_DS_CLASS_T_DEC
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inline void
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PB_DS_CLASS_C_DEC::
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do_resize_if_needed_no_throw()
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{
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if (!resize_base::is_resize_needed())
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return;
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__try
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{
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resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e));
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}
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__catch(...)
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{ }
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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}
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PB_DS_CLASS_T_DEC
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void
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PB_DS_CLASS_C_DEC::
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resize_imp(size_type new_size)
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{
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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if (new_size == m_num_e)
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return;
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const size_type old_size = m_num_e;
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entry_pointer_array a_p_entries_resized;
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// Following line might throw an exception.
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ranged_hash_fn_base::notify_resized(new_size);
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__try
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{
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// Following line might throw an exception.
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a_p_entries_resized = s_entry_pointer_allocator.allocate(new_size);
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m_num_e = new_size;
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}
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__catch(...)
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{
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ranged_hash_fn_base::notify_resized(old_size);
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__throw_exception_again;
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}
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// At this point no exceptions can be thrown.
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resize_imp_no_exceptions(new_size, a_p_entries_resized, old_size);
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Resize_Policy::notify_resized(new_size);
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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}
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PB_DS_CLASS_T_DEC
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void
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PB_DS_CLASS_C_DEC::
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resize_imp_no_exceptions(size_type new_size, entry_pointer_array a_p_entries_resized, size_type old_size)
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{
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std::fill(a_p_entries_resized, a_p_entries_resized + m_num_e,
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entry_pointer(NULL));
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for (size_type pos = 0; pos < old_size; ++pos)
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{
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entry_pointer p_e = m_entries[pos];
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while (p_e != NULL)
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p_e = resize_imp_no_exceptions_reassign_pointer(p_e, a_p_entries_resized, traits_base::m_store_extra_indicator);
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}
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m_num_e = new_size;
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_GLIBCXX_DEBUG_ONLY(assert_entry_pointer_array_valid(a_p_entries_resized);)
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s_entry_pointer_allocator.deallocate(m_entries, old_size);
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m_entries = a_p_entries_resized;
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_GLIBCXX_DEBUG_ONLY(assert_valid();)
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}
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#include <ext/pb_ds/detail/cc_hash_table_map_/resize_no_store_hash_fn_imps.hpp>
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#include <ext/pb_ds/detail/cc_hash_table_map_/resize_store_hash_fn_imps.hpp>
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