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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/resize_policy/hash_standard_resize_policy_imp.hpp')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/resize_policy/hash_standard_resize_policy_imp.hpp | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/resize_policy/hash_standard_resize_policy_imp.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/resize_policy/hash_standard_resize_policy_imp.hpp new file mode 100644 index 000000000..39cf7dc9e --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/resize_policy/hash_standard_resize_policy_imp.hpp @@ -0,0 +1,249 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2007, 2008, 2009 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 3, 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. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +// 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. + +/** + * @file hash_standard_resize_policy_imp.hpp + * Contains a resize policy implementation. + */ + +PB_DS_CLASS_T_DEC +PB_DS_CLASS_C_DEC:: +hash_standard_resize_policy() +: m_size(Size_Policy::get_nearest_larger_size(1)) +{ trigger_policy_base::notify_externally_resized(m_size); } + +PB_DS_CLASS_T_DEC +PB_DS_CLASS_C_DEC:: +hash_standard_resize_policy(const Size_Policy& r_size_policy) +: Size_Policy(r_size_policy), m_size(Size_Policy::get_nearest_larger_size(1)) +{ trigger_policy_base::notify_externally_resized(m_size); } + +PB_DS_CLASS_T_DEC +PB_DS_CLASS_C_DEC:: +hash_standard_resize_policy(const Size_Policy& r_size_policy, + const Trigger_Policy& r_trigger_policy) +: Size_Policy(r_size_policy), Trigger_Policy(r_trigger_policy), + m_size(Size_Policy::get_nearest_larger_size(1)) +{ trigger_policy_base::notify_externally_resized(m_size); } + +PB_DS_CLASS_T_DEC +PB_DS_CLASS_C_DEC:: +~hash_standard_resize_policy() +{ } + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +swap(PB_DS_CLASS_C_DEC& other) +{ + trigger_policy_base::swap(other); + size_policy_base::swap(other); + std::swap(m_size, other.m_size); +} + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_find_search_start() +{ trigger_policy_base::notify_find_search_start(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_find_search_collision() +{ trigger_policy_base::notify_find_search_collision(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_find_search_end() +{ trigger_policy_base::notify_find_search_end(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_insert_search_start() +{ trigger_policy_base::notify_insert_search_start(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_insert_search_collision() +{ trigger_policy_base::notify_insert_search_collision(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_insert_search_end() +{ trigger_policy_base::notify_insert_search_end(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_erase_search_start() +{ trigger_policy_base::notify_erase_search_start(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_erase_search_collision() +{ trigger_policy_base::notify_erase_search_collision(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_erase_search_end() +{ trigger_policy_base::notify_erase_search_end(); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_inserted(size_type num_e) +{ trigger_policy_base::notify_inserted(num_e); } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +notify_erased(size_type num_e) +{ trigger_policy_base::notify_erased(num_e); } + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +notify_cleared() +{ trigger_policy_base::notify_cleared(); } + +PB_DS_CLASS_T_DEC +inline bool +PB_DS_CLASS_C_DEC:: +is_resize_needed() const +{ return trigger_policy_base::is_resize_needed(); } + +PB_DS_CLASS_T_DEC +typename PB_DS_CLASS_C_DEC::size_type +PB_DS_CLASS_C_DEC:: +get_new_size(size_type size, size_type num_used_e) const +{ + if (trigger_policy_base::is_grow_needed(size, num_used_e)) + return size_policy_base::get_nearest_larger_size(size); + return size_policy_base::get_nearest_smaller_size(size); +} + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +notify_resized(size_type new_size) +{ + trigger_policy_base::notify_resized(new_size); + m_size = new_size; +} + +PB_DS_CLASS_T_DEC +inline typename PB_DS_CLASS_C_DEC::size_type +PB_DS_CLASS_C_DEC:: +get_actual_size() const +{ + PB_DS_STATIC_ASSERT(access, external_size_access); + return m_size; +} + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +resize(size_type new_size) +{ + PB_DS_STATIC_ASSERT(access, external_size_access); + size_type actual_size = size_policy_base::get_nearest_larger_size(1); + while (actual_size < new_size) + { + const size_type pot = size_policy_base::get_nearest_larger_size(actual_size); + + if (pot == actual_size && pot < new_size) + __throw_resize_error(); + actual_size = pot; + } + + if (actual_size > 0) + --actual_size; + + const size_type old_size = m_size; + __try + { + do_resize(actual_size - 1); + } + __catch(insert_error& ) + { + m_size = old_size; + __throw_resize_error(); + } + __catch(...) + { + m_size = old_size; + __throw_exception_again; + } +} + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +do_resize(size_type) +{ + // Do nothing +} + +PB_DS_CLASS_T_DEC +Trigger_Policy& +PB_DS_CLASS_C_DEC:: +get_trigger_policy() +{ return *this; } + +PB_DS_CLASS_T_DEC +const Trigger_Policy& +PB_DS_CLASS_C_DEC:: +get_trigger_policy() const +{ return *this; } + +PB_DS_CLASS_T_DEC +Size_Policy& +PB_DS_CLASS_C_DEC:: +get_size_policy() +{ return *this; } + +PB_DS_CLASS_T_DEC +const Size_Policy& +PB_DS_CLASS_C_DEC:: +get_size_policy() const +{ return *this; } + |